RESUMO
In this study, we evaluated the effect of microplastic (MP, polystyrene, 1.1 µm) exposure through diet at two different levels (40 and 400 µg MP/kg of ration) in the shrimp Litopenaeus vannamei for seven days. After the exposure period, oxidative stress parameters, histological alterations, and MP accumulation in different shrimp tissues (gut, gills, hepatopancreas, and muscle) were also evaluated. The results showed that MP was detected in the gills, muscles, and hepatopancreas. In addition, in the gut, gills, and hepatopancreas, disruption in redox cells was observed. Also, lipid and DNA damage was evident in the hepatopancreas. Histopathological analysis revealed edema in the intestine, hepatopancreas, and in the muscle. Granuloma formation with infiltrated hemocytes occurred in the intestine and hepatopancreas. These results show that MP exposure can affect the health and welfare of L. vannamei and may also affect the final consumers once MP is accumulated.
Assuntos
Penaeidae , Plásticos , Animais , Plásticos/metabolismo , Microplásticos , Oxirredução , Estresse Oxidativo/genética , Dieta , HepatopâncreasRESUMO
Este estudio se realizó con el objetivo de desarrollar y validar un método para la determinación de 30 medicamentos veterinarios en muestras de trucha y langostino. El método utiliza extracción en fase sólida dispersiva (dSPE) con C18 y detección por cromatografía líquida acoplada a espectrometría de masas. Se determinó linealidad, veracidad (porcentaje de recuperación), repetitividad y reproducibilidad intralaboratorio (porcentaje de desviación estándar relativa (% RSD)), límites de detección (LoD), límites de cuantificación (LoQ), selectividad e incertidumbre. La recuperación varió de 70 a 120% y la repetibilidad y la reproducibilidad fueron menores de 20% de la desviación estándar relativa. La selectividad fue adecuada, sin picos interferentes. Las relaciones iónicas cumplieron con los criterios de confirmación. Los coeficientes de determinación (R2) fueron mayores de 0,99, con excepción de la sulfaquinoxalina en langostino (R2 = 0,97). Los LoD y los LoQ variaron entre 0,6 µg/kg y 12,8 µg /kg y los valores de incertidumbre entre 6 µg/kg y 49 µg/ kg. Se analizaron adicionalmente 6 muestras de diferentes mercados de Lima y se detectaron trazas de algunos medicamentos incluidos en el ensayo. El método es adecuado para el análisis de residuos de medicamentos veterinarios y se recomienda su aplicación en los programas nacionales de monitoreo de la inocuidad de truchas y langostinos provenientes de acuicultura.
The study was aimed at developing and validate an analysis method to determine residues of 30 veterinary drugs in rainbow trout and shrimp specimens. The method involves extraction in dispersive solid phase with C18 and the subsequent detection through liquid chromatography coupled to mass spectrometry. Validation was done through determination of linearity, trueness (% of recovery), repeatability and intralaboratory reproducibility, limits of detection (LoD), limits of quantification (LoQ) selectivity and uncertainty. Recovery ranged from 70 to 120% and repeatability and intralaboratory reproducibility were lower than 20%. Selectivity was adequate, without interference peaks. Likewise, the ionic relationships met the confirmation criteria. The linearity was adequate, with determination coefficients (R2) above 0.99, except for sulfaquinolaxin in shrimp specimens (R2 = 0,97). LoD and LoQ varied from 0,6 µg /kg to 12,8 µg / kg. Limits of uncertainty ranged from 6 µg /kg to 49 µg /kg. The method was used to analyze 6 samples from different markets in Lima (Peru), identifying traces of some drugs included in the study. Our results show that the method is adequate for the analysis of veterinary drug residues and allow us to recommend its application in national monitoring programs, to assess the safety of rainbow trout and shrimp specimens from aquaculture.
O estudo foi realizado com o objetivo de desenvolver e validar um método para a determinação de 30 medicamentos veterinários, em amostras de truta e camarão. O método utiliza extração dispersiva em fase sólida com C18 e detecção por cromatografia líquida acoplada à espectrometria de massas. Foram determinados a linearidade, a veracidade (recuperação percentual), a repetibilidade, a reprodutibilidade intra-laboratorial, os limites de detecção (LoD) e de quantificação (LoQ), a linearidade, a selectividade e a incerteza. A recuperação variou de 70 a 120%, a repetibilidade e reprodutibilidade estiveram abaixo do 20% do desvio padrão relativo. A selectividade fio adequada, sem picos de interferentes. As proporções de íons atenderam aos critérios de confirmação. Os coeficientes de determinação (R2) foram superiores a 0,99, com excepção da sulfanoxalina em camarão (R2 = 0,97). LoD e LoQ variavam entre 0,6 µg /kg e 12,8 µg /kg e valores de incerteza entre 6 µg /kg e 49 µg / kg. Seis amostras de mercados do Lima foram adicionalmente analisadas e foram detectados vestígios de alguns medicamentos incluídos no estudo. O método é adequado para o análise de resíduos de medicamentos veterinários e sua aplicação é recomendada em programas nacionais de controlo da segurança da truta e do camarão provenientes da aquicultura.
RESUMO
The pelagic shrimp, Acetes paraguayensis Hansen, 1919, is an ecologically important species with an enormous socioeconomic value for the human populations in the regions where it occurs. This species also has considerable potential for shrimp farming, although few details are known of its biology. This study investigated the artisanal exploitation of A. paraguayensis stocks in the northern Brazilian municipality of Santarém over 16 months, focusing on the types of equipment most used to harvest of this shrimp, the fishing dynamics, and production patterns. The matapi trap was the principal method used of harvesting A. paraguayensis in the study region, conforming to a typically artisanal, small-scale fishing production system. This study results provide an essential research tool for developing conservation and management strategies and the eventual establishment of farming protocols.
O camarão pelágico, Acetes paraguayensis Hansen, 1919, é uma espécie ecologicamente importante, de enorme valor socioeconômico para as populações humanas localizadas nas regiões produtoras. Essa espécie tem também um potencial considerável para o cultivo, embora poucas informações sejam conhecidas da sua biologia. Assim o presente estudo investigou a exploração artesanal das po-pulações de A. paraguayensis no município paraense de Santarém, no Norte do Brasil, por 16 meses, concentrando-se nos tipos de equipamento mais utilizados para sua captura, na dinâmica pesqueira e nos padrões de produção. O matapi foi o principal método utilizado, configurando-se como um sistema de produção pesqueira tipicamente artesanal de pequena escala. Os resultados do presente estudo constituem importante instrumento de investigação para o desenvolvimento de estratégias de conservação e gestão e o eventual estabelecimento de protocolos de cultivo.
Assuntos
Animais , Decápodes , Caça , Brasil , RiosRESUMO
Palaemonid shrimps inhabit osmotic niches from marine to continental waters. They hyper-regulate hemolymph osmolality and ionic concentrations in dilute media, hypo-regulating in concentrated media. Their gill epithelia express ion transporters like the Na+-K+-2Cl- symporter (NKCC) thought to play a role in salt secretion. To examine Cl- hypo-regulatory capability and phylogenetic correlations between gill NKCC mRNA levels and protein expression, we used palaemonids ranging from marine tide pools through estuaries (Palaemon) to coastal and continental fresh waters (Macrobrachium). We established the species' upper critical salinity limits (UL50) and short- (24 h) and long-term (120h) hypo-regulatory abilities at salinities of 80% of their UL50's (80%UL50). The Palaemon species exhibited the highest UL50's and greatest hypo-regulatory capabilities; among the Macrobrachium species, UL50's were higher in the diadromous than in the hololimnetic species. While basal transcript levels of gill NKCC mRNA were highest in P. pandaliformis, levels were unaffected by salinity or exposure time in all species. However, gill NKCC protein abundance increased after 120-h exposure at the 80%UL50 in all Macrobrachium species, except M. potiuna. Unexpectedly, hemolymph hyper-osmoregulatory capability in acclimatization media correlated with gill NKCC protein synthesis, while gill NKCC mRNA expression correlated with hemolymph hyper-Cl- regulation in Macrobrachium. These findings, together with the evolutionary history of osmoregulation in this shrimp clade, suggest a role for the gill NKCC symporter in both salt uptake and secretion. The evolution of NKCC protein expression responsiveness, unlike hemolymph hypo-regulation and NKCC mRNA expression, may have been driven by environmental salinity during niche radiation. SUMMARY STATEMENT: While mRNA expression of the gill Na+-K+-2Cl- symporter is unchanged during acclimation of palaemonid shrimps to saline media, protein expression is up regulated, revealing a role in chloride secretion.
Assuntos
Brânquias/fisiologia , Palaemonidae/genética , Palaemonidae/fisiologia , ATPase Trocadora de Sódio-Potássio/metabolismo , Aclimatação , Animais , Evolução Biológica , Ecossistema , Feminino , Água Doce , Hemolinfa/metabolismo , Íons , Cinética , Masculino , Concentração Osmolar , Osmorregulação , Osmose , Filogenia , RNA Mensageiro/metabolismo , Salinidade , Sódio/metabolismo , Especificidade da Espécie , Simportadores/genética , Simportadores/metabolismo , Resultado do Tratamento , Equilíbrio Hidroeletrolítico/fisiologiaRESUMO
A new laomediid genus, Strianassa gen. nov., is established to accommodate a new eastern Pacific species of mud-shrimp, Strianassa lerayi sp. nov. The holotype and single specimen of the new species was collected on a shallow subtidal flat at Isla Afuerita, Canales de Afuera, Coiba Archipelago, Panama. Strianassa gen. nov. appears to be most closely related to Axianassa Schmitt, 1924 and Heteroaxianassa Sakai, 2016, differing from both of them by the dorsal surface of the rostrum armed with teeth; the third maxilliped with an exopod and a set of setobranchs; and the epipodal complex of the fourth pereiopod including a small podobranch. In addition, Axianassa ngochoae Anker, 2010 and Heteroaxianassa heardi (Anker, 2011) are recorded for the first time from New Caledonia and Papua New Guinea, respectively, representing minor extensions of their previously known distributional ranges. The validity of Heteroaxianassa is discussed.
Assuntos
Decápodes , Distribuição Animal , Estruturas Animais , AnimaisRESUMO
In the present study, we report for the first time the occurrence of the alpheid shrimps Leptalpheus forceps Williams, 1965 and Leptalpheus marginalis Anker, 2011 in the state of Pará, in northern Brazil. Both Leptalpheus species (males, non-ovigerous females, and females carrying eggs) were collected from the burrows of the callichirid "ghost" shrimp, Lepidophthalmus siriboia Felder Rodrigues, 1993, in a muddy-sandy intertidal zone of the Ajuruteua Peninsula, in the Bragança region. These records update the known geographical distribution of the two species, with L. forceps extending its Brazilian occurrence from the state of Bahia to state of Pará, and L. marginalis which was exclusively found on the Caribbean coast of Colombia is now recorded in Brazil.
Assuntos
Decápodes , Distribuição Animal , Estruturas Animais , Animais , Brasil , Feminino , MasculinoRESUMO
A new species of intertidal ghost shrimp, Biffarius botterae, is described from Maranhão and Ceará in northeastern Brazilian coast. Diagnostic features of the new species include: (1) antennular peduncle shorter than antennal peduncle; (2) male major cheliped massive; (3) male pleopod 2 uniramous, vestigial; (4) uropodal endopod widening distally, inner lateral margin convex; and (5) anterodorsal plate of uropodal exopod absent. Biffarius Manning Felder, 1991, now consists of four species: B. biformis (Biffar, 1971), B. botterae sp. nov., B. delicatulus Rodrigues Manning, 1992, and B. limosus (Poore, 1975). A key to the species of Biffarius is provided.
Assuntos
Decápodes , Distribuição Animal , Estruturas Animais , Animais , Brasil , MasculinoRESUMO
In this paper, we provide some available information about the occurrence and some taxonomic aspects of 19 species from the Superfamily Oplophoroidea in the southwestern Atlantic (Brazilian waters), with the update to 22 species of Oplophoroidea occurring in Brazilian waters. Samples were collected during two sets of surveys. The first was performed in 2009 and 2011 in the Potiguar Basin in northeast of Brazil (03-05°S; 38-35°W; between the States of Ceará and Rio Grande do Norte) under the framework of the project "Avaliação da biota bentônica e planctônica da Bacia Potiguar e Ceará (Bpot)", with samples collected from bottom trawls in the continental slope at depth ranging from 150-2068 m. Second, under the in the framework of the ABRACOS (Acoustic along the Brazilian coast), performed in 2015 and 2017 on seamounts and offshore areas in Northeast Brazil (Ceará Chain, Rio Grande do Norte and Rocas Atoll, Fernando de Noronha Archipelago and Pernambuco State), with samples with pelagic micronekton and mesopelagic nets, in depths ranging from 50-1260 m. We highlight the occurrence of 14 species of the family Acanthephyridae and 5 species of the family Oplophoridae, including the first occurrences of five species to Brazilian deep waters: Acanthephyra kingsleyi Spence Bate, 1888, Ephyrina ombango Crosnier Forest, 1973, Meningodora compsa (Chace, 1940), M. longisulca Kikuchi, 1985 and Systellapsis curvispina Crosnier, 1987. These records increase the knowledge on deep-sea shrimps occurring in Southwestern Atlantic.
Assuntos
Decápodes , Acústica , Animais , Oceano Atlântico , Brasil , Inquéritos e QuestionáriosRESUMO
Resumen El acceso a datos actualizados, sobre los nombres y distribución de las especies de crustáceos presentes en un área en particular, es un primer paso para evaluar cambios debidos a factores locales, regionales o globales, como la sobrepesca, la contaminación y el cambio climático. Los datos en este estudio están basados en las expediciones de los buques de investigación Skimmer (20 estaciones, 1979-1980) y Victor Hensen (1993-1994, 12 estaciones) en el estuario del Golfo de Nicoya. Los crustáceos fueron recolectados mediante redes de arrastre tipo Otter (Skimmer, malla 3.5 cm) y por tipos Otter y Beam (V. Hensen, mallas de 2.5 cm y 1.9 cm) a profundidades entre 10 y 228 m. Datos en dos estudios posteriores aportaron información para una zona de entre-mareas en la región superior del Golfo y para estaciones en la boca del estuario, lo que incrementa el ámbito de profundidad de 0 a 350 m. Se revisaron las publicaciones originales y se hicieron 32 actualizaciones de los nombres de las especies con base en la literatura reciente y en la página de red World Register of Marine Species (WORMS). El total de especies para ambas expediciones fue de 131, del que 119 fueron decápodos y 12 fueron estomatópodos. Los datos en los otros dos estudios, así como la revisión de las colecciones en el Museo de Zoología de la Universidad de Costa Rica, incrementó en 43 el número de registros, para un total de 174 especies en los sedimentos del estuario. Para el Skimmer el número mínimo de especies en una estación fue de cuatro (tres estaciones) y el máximo de 27, con un promedio de 12.3 especies / estación. Para el V. Hensen el mínimo de especies en una estación fue de ocho, con un máximo de 27 y un promedio de 17 especies / estación. Las especies presentes en 50 % o más de las 20 estaciones de la expedición del Skimmer, fueron: Callinectes arcuatus, Rimapenaeus faoe, Penaeus brevirostris, Achelous asper y Hepatus kossmanni. Para la expedición del V. Hensen las especies presentes en más del 50 % de las 12 estaciones, fueron: A. asper, Sicyonia disdorsalis, S. picta y Persephona subovata. Durante el estudio del Skimmer, un total de 15 especies fueron encontradas en solo una estación, mientras que para el V. Hensen el número fue de 26. Se digitalizaron dos matrices de datos de presencia-ausencia de las especies en las estaciones y con base en los nombres actualizados de las especies recolectadas por el Skimmer (57 especies x 20 estaciones) y V. Hensen (82 especies x 12 estaciones) se les aplicó un Análisis No Métrico Dimensional de Escala (NMDS) para obtener una distribución de las estaciones en un espacio bi-dimensional. Los resultados revelaron unos grupos heterogéneos de estaciones. Algunos sub-grupos de tres o cuatro estaciones concuerdan con su proximidad geográfica. Las cuatro estaciones del V. Hensen en la boca del estuario a profundidades mayores a los 60 m fueron separadas más claramente de las otras, y podrían indicar una transición, desde aguas estuarinas hacia aguas profundas, en la composición de la fauna de crustáceos. Evaluaciones futuras de la diversidad de crustáceos del Golfo de Nicoya deben de considerar la amplia distribución espacial de algunas especies y la restringida de otras. La variabilidad temporal es también importante en el estuario, tal como lo evidenció la oscilación de la población de Pinnixulala valerii en un periodo de tres años.(AU)
Abstract The access to updated data on the names of the crustacean species and their distribution in a given area is a first step to evaluate changes due to local, regional and global factors such as overfishing, pollution, and climatic change. Data in this study are based on the expeditions of the RV Skimmer (20 stations, 1979-1980) and RV Victor Hensen (1993-1994, 12 stations) in the Gulf of Nicoya estuary. The crustaceans were collected by means of an Otter trawl (Skimmer, mesh 3.5 cm) and by Otter and Beam trawls (V. Hensen, mesh 2.5 cm and 1.0 cm, respectively) at depths from 10 m to 228 m. Data from two later studies were also included, one from an intertidal flat in the upper Gulf and the other from stations at the mouth of the estuary, which expand the depth range from 0 to 350 m. The list of species in the original publications were updated and 32 corrections were made based on recent literature and the web page, World Register of Marine Species (WORMS). The total number of species for both surveys was 131, of which 119 were decapods and 12 were stomatopods. Data from the other two studies and from the crustacean collection deposited at the University of Costa Rica Zoology Museum added 43 records for a total of 174 species collected in sediments from the estuary. For the Skimmer, the minimum number of species found in one station was four (three stations) and the maximum was 27, with an average of 12.3 species / station. For the V. Hensen, the minimum of species found in one station was eight, with a maximm of 27 and an average of 17 species / station. The species present in 50 % or more of the 20 stations of the Skimmer expedition, were: Callinectes arcuatus, Rimapenaeus faoe, Penaeus brevirostris, Achelous asper and Hepatus kossmanni. For the V. Hensen expedition, the species present in 50 % or more of the 12 stations, were: A. asper, Sicyonia disdorsalis, S. picta, and Persephona subovata. During the Skimmer survey a total of 15 species were found at only one station, while for the V. Hensen the number was 26. Two presence-absence matrices based on the updated names of the crustaceans collected by the Skimmer (57 species x 20 stations) and V. Hensen (82 species x 12 stations) were analyzed by Non Metric Dimensional Scaling (NMDS) to display the distribution of stations in a two-dimensional space. The results revealed heterogeneous groups of stations. Several sub-groups of two or three stations agreed with their geographical proximity. The four V. Hensen stations, located at the mouth of the estuary at depths greater than 60 m, were separated more clearly from the others and may indicate a transition, from estuarine to deep waters, in the composition of the crustacean fauna. Future evaluations of the crustacean diversity of the Gulf of Nicoya must take into account the wide spatial distribution of some species and the patchy distribution of others. Temporal variability is also important in the estuary as evidenced by the population oscilallations of Pinnixulala valerii over a three year period.(AU)
Assuntos
Decápodes , Fauna Bentônica , Estuários , Braquiúros , Pesqueiros , Costa RicaRESUMO
Abstract Length and weight relationships and descriptive statistics are reported for six shrimp species caught off the Madeira archipelago between 1983 and 2014 using bottom and floating traps from depths ranging from 50 to 1,300 m. The parameter b ranged between 2.36 for Plesionika ensis and 2.97 for Plesionika williamsi. All species showed a pattern of negative allometric growth. To the authors' knowledge all weight-length relationships presented herein are recorded for the first time from the Madeira area, and in the cases of Ligur ensiferus and Plesionika ensis are the first references worldwide.
Resumo As relações peso-comprimento e a estatística descritiva foram estimadas para seis espécies de camarões, capturados ao largo do arquipélago da Madeira, entre 1983 e 2014, usando armadilhas de fundo e alvoradas entre os 50 e 1.300 metros de profundidade. O parâmetro b variou entre 2,36 para Plesionika ensis e 2,97 para Plesionika williamsi. Todas as espécies evidenciaram um padrão de crescimento alométrico negativo. De acordo com o conhecimento dos autores, todas as relações peso-comprimento são aqui apresentadas pela primeira vez para a área da Madeira e no caso de Ligur ensiferus e Plesionika ensis são a primeira referência mundial.
Assuntos
Animais , Masculino , Feminino , Decápodes/fisiologia , Portugal , Peso Corporal , Oceano Atlântico , Pandalidae/fisiologia , Tamanho CorporalRESUMO
Length and weight relationships and descriptive statistics are reported for six shrimp species caught off the Madeira archipelago between 1983 and 2014 using bottom and floating traps from depths ranging from 50 to 1,300 m. The parameter b ranged between 2.36 for Plesionika ensis and 2.97 for Plesionika williamsi. All species showed a pattern of negative allometric growth. To the authors knowledge all weight-length relationships presented herein are recorded for the first time from the Madeira area, and in the cases of Ligur ensiferus and Plesionika ensis are the first references worldwide.(AU)
As relações peso-comprimento e a estatística descritiva foram estimadas para seis espécies de camarões, capturados ao largo do arquipélago da Madeira, entre 1983 e 2014, usando armadilhas de fundo e alvoradas entre os 50 e 1.300 metros de profundidade. O parâmetro b variou entre 2,36 para Plesionika ensis e 2,97 para Plesionika williamsi. Todas as espécies evidenciaram um padrão de crescimento alométrico negativo. De acordo com o conhecimento dos autores, todas as relações peso-comprimento são aqui apresentadas pela primeira vez para a área da Madeira e no caso de Ligur ensiferus e Plesionika ensis são a primeira referência mundial.(AU)
Assuntos
Animais , Pandalidae/anatomia & histologia , Pandalidae/crescimento & desenvolvimento , Pesos e Medidas Corporais/veterináriaRESUMO
Five species of shrimps, four carideans and one stenopodidean, are recorded for the first time from the Caribbean coast of Panama: Lysmata vittata (Stimpson, 1860) [Lysmatidae Dana, 1852], Periclimenaeus ascidiarum Holthuis, 1951, P. bredini Chace, 1972, P. maxillulidens (Schmitt, 1936) [Palaemonidae Rafinesque, 1815], and Odontozona edyli Criales Lemaitre, 2017 [Stenopodidae Claus, 1872]. Rather surprisingly, L. vittata is recorded from the Caribbean Sea for the first time. However, the taxonomic status of all western Atlantic specimens currently assigned to L. vittata (including the Panamanian material and the Brazilian L. rauli Laubenheimer Rhyne, 2010) will need a much more careful reassessment, which will only be possible after determining the taxonomic identity of L. vittata in the Indo-West Pacific. The colour patterns of P. ascidiarum, P. bredini and O. edyli, herein illustrated for the first time, appear to be species-diagnostic and may serve as additional important taxonomic characters. For O. edyli, the previously unknown thoracic sternum of the female is illustrated, as well as the variation in the rostral dentition.
Assuntos
Decápodes , Animais , Região do Caribe , Feminino , Palaemonidae , PanamáRESUMO
A new snapping shrimp is described based on several specimens collected on a shallow coral reef off Isla Popa in Bocas del Toro, on the Caribbean coast of Panama. All specimens of Alpheus naranjo sp. nov. were extracted from dead colonies of the thin-leaf lettuce coral, Agaricia tenuifolia Dana, at a depth of about 2 m. Based on its morphological characteristics, the new species belongs to a small species complex that also includes A. blachei Crosnier Forest, 1965 from the tropical eastern Atlantic, and A. felgenhaueri Kim Abele, 1988 and A. confusus Carvacho, 1989, both from the tropical eastern Pacific. Alpheus naranjo sp. nov. can be separated from all of them by the relatively longer fingers of the minor chela, which are devoid of balaeniceps setae, as well as some other morphological details. In the western Atlantic, A. naranjo sp. nov. is the only large uniformly orange-red snapping shrimp, hence its proposed new name. The colour patterns of A. blachei and A. confusus are illustrated for the first time.
Assuntos
Decápodes , Penaeidae , Animais , Antozoários , Região do Caribe , Recifes de Corais , PanamáRESUMO
This study is part of a series of checklists resulting from a long-term multidisciplinary project on the biodiversity of decapod crustaceans from the marine and coastal environments (including estuaries) of São Paulo State (Brazil). For that, we integrated molecular techniques (mitochondrial DNA markers) and morphological analyses of adult specimens for an accurate and detailed identification. The DNA markers were used when the morphological identification was doubtful, particularly in the recognition of cryptic species. This second manuscript presents a checklist of the Alpheidae caridean shrimps from the coast of São Paulo. We report the occurrence of Alpheus cf. paracrinitus and Synalpheus townsendi for the first time in the region. Based on our survey, 39 species of Alpheidae are known for this region: Alpheus (21 spp.), Athanas (2 spp.), Automate (2 spp.), Leptalpheus (1 spp.), Salmoneus (3 spp.), and Synalpheus (10 spp.). We collected 28 species and obtained cytochrome oxidase subunit I (barcode region) and/or 16S partial sequences of 26 of them. These sequences may be used for phylogenetic and populational analyses in further studies.
Assuntos
Decápodes , Filogenia , Animais , Biodiversidade , Brasil , EstuáriosRESUMO
The current checklist is the result of a long-term multidisciplinary project which combined molecular techniques (mitochondrial DNA markers) and morphological analyses of adult specimens for an accurate and detailed identification of the total biodiversity of decapod crustaceans from marine and coastal (including estuaries) environments of São Paulo State (Brazil). This is the first of a series of reports and providing a checklist of caridean shrimps of the families Hippolytidae (5 spp.), Lysmatidae (6 spp.), Ogyrididae (2 spp.), Processidae (5 spp.) and Thoridae (1 sp.). We collected material of 13 species out of 19 recorded, with sequences of cytochrome oxidase subunit I - barcode region and 16S generated from 10 species. The previous record of Lysmata cf. intermedia for São Paulo is actually L. jundalini, as the first record in São Paulo/South Atlantic waters. The molecular data were helpful to confirm the identification of some species, as the occurrence of L. wurdemanni which is confirmed in the South Atlantic Ocean based on morphological, color pattern and molecular data.
Assuntos
Decápodes , Animais , Oceano Atlântico , Biodiversidade , Brasil , EstuáriosRESUMO
The family Crangonidae comprises 22 genera and 219 species. Six species are recorded in the Southwestern Atlantic. In this paper, two species of this family, Pontophilus brevirostris Smith, 1881 and Sabinea hystrix (A. Milne-Edwards, 1881) are recorded for the first time to southwestern Atlantic Ocean. Additionally, we record the occurrence of Parapontocaris caribbaea (Boone, 1927), Parapontophilus gracilis (Smith, 1882) and Philocheras gorei (Dardeau, 1980) to the Northeast of Brazil. Through this paper, we raised the number of Cragonidae species to eight from recorded from southwestern Atlantic (Brazilian deep waters).
Assuntos
Crangonidae , Distribuição Animal , Animais , Oceano Atlântico , Brasil , DecápodesRESUMO
Thalassia testudinum y Halodule wrigthii son las hierbas marinas dominantes en el Caribe, siendo comunes en costas someras, tanto en monocultivos como en cultivos mixtos. Entre la macrofauna asociada a estas comunidades, los crustáceos son considerados esenciales para el funcionamiento del ecosistema. Sin embargo, el conocimiento sobre la comunidad de crustáceos decápodos asociada a praderas mixtas de T. testudinum y H. wrigthii es escaso, en particular fuera de zonas protegidas. En este trabajo presentamos ocho nuevas especies de decápodos para la Península de Paraguaná (estado Falcón, Venezuela) asociados a praderas mixtas de hierbas marinas: Achelous tumidulus Stimpson, 1871, Alpheus floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, y Processa fimbriata Manning & Chace, 1971. Estos registros representan extensiones de hábitat y completan brechas en la distribución geográfica de las especies a lo largo de la costa septentrional de Sudamérica. Diferencias estadísticas en la abundancia y composición de las especies de decápodos fueron posiblemente causadas por la acción conjunta de cobertura y heterogeneidad de las praderas. Las especies más influyentes en la comunidad son típicas para el Caribe; no obstante, la abundancia de Penaeus schmitti Burkenroad, 1936 juveniles fue notable, puesto que raramente han sido encontrados en estos hábitats. Este hallazgo resalta el rol de áreas no protegidas como hábitats de cría para especies de importancia comercial. Nuestros resultados muestran que las praderas de hierbas marinas en la Península de Paraguaná reflejan un buen estado en comparación con otras zonas del Caribe, y representan un hábitat importante para el mantenimiento de las poblaciones de crustáceos.(AU)
Thalassia testudinum and Halodule wrigthii are the dominant seagrasses in the Caribbean, being common across shallow shorelines, either as monospecific or as intermixed meadows. Among the macrofauna associated with these beds, crustaceans are considered essential for the whole ecosystem functioning. However, knowledge about the associated community of decapod crustaceans in assemblages of T. testudinum and H. wrigthii is still scarce, particularly outside of protected areas. Here we report eight new decapod species for the Paraguaná Peninsula (Falcón State, Venezuela) in association with intermixed seagrass beds: Achelous tumidulus Stimpson, 1871, Alpheus aff. floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, and Processa fimbriata Manning & Chace, 1971. These records represent habitat extensions and fill gaps in the geographical distribution of the species along the northern coast of South America. Furthermore, we found that statistical differences in decapod species abundance and composition are likely to be caused by the joint action of coverage and heterogeneity of the beds. Our results indicate that typical Caribbean species were the most influential in the community; nevertheless, the abundance of juvenile Penaeus schmitti Burkenroad, 1936 was notable, since they have rarely been found in these habitats. This finding highlights the role of non-protected areas as nursery habitats for economically important species. Our results show that seagrass meadows in the Paraguaná Peninsula reflect overall good health when compared to other Caribbean zones, representing an important habitat for the maintenance of crustacean populations.(AU)
Assuntos
Animais , Decápodes/classificação , Penaeidae/classificação , Braquiúros/classificação , Palaemonidae/classificação , Anomuros/classificação , Palinuridae/classificação , Hydrocharitaceae , Ecossistema , Pradaria , Ambiente Marinho , Venezuela , Distribuição AnimalRESUMO
Abstract Length and weight relationships and descriptive statistics are reported for six shrimp species caught off the Madeira archipelago between 1983 and 2014 using bottom and floating traps from depths ranging from 50 to 1,300 m. The parameter b ranged between 2.36 for Plesionika ensis and 2.97 for Plesionika williamsi. All species showed a pattern of negative allometric growth. To the authors knowledge all weight-length relationships presented herein are recorded for the first time from the Madeira area, and in the cases of Ligur ensiferus and Plesionika ensis are the first references worldwide.
Resumo As relações peso-comprimento e a estatística descritiva foram estimadas para seis espécies de camarões, capturados ao largo do arquipélago da Madeira, entre 1983 e 2014, usando armadilhas de fundo e alvoradas entre os 50 e 1.300 metros de profundidade. O parâmetro b variou entre 2,36 para Plesionika ensis e 2,97 para Plesionika williamsi. Todas as espécies evidenciaram um padrão de crescimento alométrico negativo. De acordo com o conhecimento dos autores, todas as relações peso-comprimento são aqui apresentadas pela primeira vez para a área da Madeira e no caso de Ligur ensiferus e Plesionika ensis são a primeira referência mundial.
RESUMO
Thalassia testudinum y Halodule wrigthii son las hierbas marinas dominantes en el Caribe, siendo comunes en costas someras, tanto en monocultivos como en cultivos mixtos. Entre la macrofauna asociada a estas comunidades, los crustáceos son considerados esenciales para el funcionamiento del ecosistema. Sin embargo, el conocimiento sobre la comunidad de crustáceos decápodos asociada a praderas mixtas de T. testudinum y H. wrigthii es escaso, en particular fuera de zonas protegidas. En este trabajo presentamos ocho nuevas especies de decápodos para la Península de Paraguaná (estado Falcón, Venezuela) asociados a praderas mixtas de hierbas marinas: Achelous tumidulus Stimpson, 1871, Alpheus floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, y Processa fimbriata Manning & Chace, 1971. Estos registros representan extensiones de hábitat y completan brechas en la distribución geográfica de las especies a lo largo de la costa septentrional de Sudamérica. Diferencias estadísticas en la abundancia y composición de las especies de decápodos fueron posiblemente causadas por la acción conjunta de cobertura y heterogeneidad de las praderas. Las especies más influyentes en la comunidad son típicas para el Caribe; no obstante, la abundancia de Penaeus schmitti Burkenroad, 1936 juveniles fue notable, puesto que raramente han sido encontrados en estos hábitats. Este hallazgo resalta el rol de áreas no protegidas como hábitats de cría para especies de importancia comercial. Nuestros resultados muestran que las praderas de hierbas marinas en la Península de Paraguaná reflejan un buen estado en comparación con otras zonas del Caribe, y representan un hábitat importante para el mantenimiento de las poblaciones de crustáceos.
Thalassia testudinum and Halodule wrigthii are the dominant seagrasses in the Caribbean, being common across shallow shorelines, either as monospecific or as intermixed meadows. Among the macrofauna associated with these beds, crustaceans are considered essential for the whole ecosystem functioning. However, knowledge about the associated community of decapod crustaceans in assemblages of T. testudinum and H. wrigthii is still scarce, particularly outside of protected areas. Here we report eight new decapod species for the Paraguaná Peninsula (Falcón State, Venezuela) in association with intermixed seagrass beds: Achelous tumidulus Stimpson, 1871, Alpheus aff. floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, and Processa fimbriata Manning & Chace, 1971. These records represent habitat extensions and fill gaps in the geographical distribution of the species along the northern coast of South America. Furthermore, we found that statistical differences in decapod species abundance and composition are likely to be caused by the joint action of coverage and heterogeneity of the beds. Our results indicate that typical Caribbean species were the most influential in the community; nevertheless, the abundance of juvenile Penaeus schmitti Burkenroad, 1936 was notable, since they have rarely been found in these habitats. This finding highlights the role of non-protected areas as nursery habitats for economically important species. Our results show that seagrass meadows in the Paraguaná Peninsula reflect overall good health when compared to other Caribbean zones, representing an important habitat for the maintenance of crustacean populations.
Assuntos
Animais , Ambiente Marinho , Anomuros/classificação , Braquiúros/classificação , Decápodes/classificação , Ecossistema , Hydrocharitaceae , Palaemonidae/classificação , Palinuridae/classificação , Penaeidae/classificação , Pradaria , Distribuição Animal , VenezuelaRESUMO
RESUMEN Thalassia testudinum y Halodule wrigthii son las hierbas marinas dominantes en el Caribe, siendo comunes en costas someras, tanto en monocultivos como en cultivos mixtos. Entre la macrofauna asociada a estas comunidades, los crustáceos son considerados esenciales para el funcionamiento del ecosistema. Sin embargo, el conocimiento sobre la comunidad de crustáceos decápodos asociada a praderas mixtas de T. testudinum y H. wrigthii es escaso, en particular fuera de zonas protegidas. En este trabajo presentamos ocho nuevas especies de decápodos para la Península de Paraguaná (estado Falcón, Venezuela) asociados a praderas mixtas de hierbas marinas: Achelous tumidulus Stimpson, 1871, Alpheus floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, y Processa fimbriata Manning & Chace, 1971. Estos registros representan extensiones de hábitat y completan brechas en la distribución geográfica de las especies a lo largo de la costa septentrional de Sudamérica. Diferencias estadísticas en la abundancia y composición de las especies de decápodos fueron posiblemente causadas por la acción conjunta de cobertura y heterogeneidad de las praderas. Las especies más influyentes en la comunidad son típicas para el Caribe; no obstante, la abundancia de Penaeus schmitti Burkenroad, 1936 juveniles fue notable, puesto que raramente han sido encontrados en estos hábitats. Este hallazgo resalta el rol de áreas no protegidas como hábitats de cría para especies de importancia comercial. Nuestros resultados muestran que las praderas de hierbas marinas en la Península de Paraguaná reflejan un buen estado en comparación con otras zonas del Caribe, y representan un hábitat importante para el mantenimiento de las poblaciones de crustáceos.
ABSTRACT Thalassia testudinum and Halodule wrigthii are the dominant seagrasses in the Caribbean, being common across shallow shorelines, either as monospecific or as intermixed meadows. Among the macrofauna associated with these beds, crustaceans are considered essential for the whole ecosystem functioning. However, knowledge about the associated community of decapod crustaceans in assemblages of T. testudinum and H. wrigthii is still scarce, particularly outside of protected areas. Here we report eight new decapod species for the Paraguaná Peninsula (Falcón State, Venezuela) in association with intermixed seagrass beds: Achelous tumidulus Stimpson, 1871, Alpheus aff. floridanus Kingsley, 1878, Chorinus heros (Herbst, 1790), Clibanarius antillensis (Stimpson, 1859), Clibanarius sclopetarius (Herbst, 1796), Latreutes parvulus (Stimpson, 1866), Panopeus occidentalis Saussure, 1857, and Processa fimbriata Manning & Chace, 1971. These records represent habitat extensions and fill gaps in the geographical distribution of the species along the northern coast of South America. Furthermore, we found that statistical differences in decapod species abundance and composition are likely to be caused by the joint action of coverage and heterogeneity of the beds. Our results indicate that typical Caribbean species were the most influential in the community; nevertheless, the abundance of juvenile Penaeus schmitti Burkenroad, 1936 was notable, since they have rarely been found in these habitats. This finding highlights the role of non-protected areas as nursery habitats for economically important species. Our results show that seagrass meadows in the Paraguaná Peninsula reflect overall good health when compared to other Caribbean zones, representing an important habitat for the maintenance of crustacean populations.