RESUMO
We present the novel reference genome of the Versatile Fairy Shrimp, Branchinecta lindahli. The Versatile Fairy Shrimp is a freshwater anostracan crustacean found across the western United States from Iowa to Oregon and from Alberta to Baja California. It is an ephemeral pool specialist, living in prairie potholes, irrigation ditches, tire treads, vernal pools, and other temporary freshwater wetlands. Anostracan fairy shrimp are facing global declines with 3 species in California on the Endangered Species list. This species was included in the California Conservation Genomics Project to provide an easily accessible reference genome, and to provide whole-genome resources for a generalist species, which may lead to new insights into Anostracan resiliency in the face of climate change. The final gapped genome comprises 15 chromosome-length scaffolds covering 98.63% of the 384.8 Mb sequence length, and an additional 55 unscaffolded contigs.
Assuntos
Anostraca , Espécies em Perigo de Extinção , Animais , Estados Unidos , Anostraca/genética , México , Áreas Alagadas , Cromossomos/genéticaRESUMO
A detailed morphological comparison was carried out among specimens of several samples of Archaebranchinecta Rogers Coronel, 2011 from the Altiplano of Peru, Bolivia, and Argentina. Surprisingly, striking differences were found between Peruvian samples collected near the western shore of Lake Titicaca, and those from Bolivia taken southwardly, near the east coasts of River Desaguadero and Lake Poopó. Accordingly, the new species Archaebranchinecta aimara sp. nov. is described, representing the second specific entity of a genus that so far included only A. pollicifera (Harding, 1940). The main differential features between both species include: (a) size and shape of the three processes of basal segment of the male second antenna; (b) shape and protrusion degree of the pair of medioventral bulges in the male genital segments; (c) presence or absence of strong ventrolateral spine on the second genital segment of female; and (d) presence or absence of a pair of ventrolateral outgrowths in the brood pouch. This research contributes to our understanding of the biodiversity and endemism of the unique Altiplano region of South America.
Assuntos
Anostraca , Animais , Argentina , Bolívia , Feminino , Masculino , Peru , América do SulRESUMO
The launch of the Dutch Caribbean Species Register by Naturalis Biodiversity Center (2017)-https://www.dutchcaribbeanspecies.org/-raised the question of which branchiopods originate from this part of the Netherlands. To answer this question, surveys of literature and of the Naturalis collection were conducted. The additional samples (collected in 2003-2005 and 2008) were analyzed. We present an annotated checklist of the Branchiopoda of the Dutch Caribbean. The Kingdom of the Netherlands includes the Dutch mainland and six Caribbean islands. From the Caribbean part of the kingdom, an annotated list of all known species is given. Fifteen taxa and three genera have been encountered and the species are discussed. To date, six species of large branchiopods and nine species of cladocerans are known. Two more genera of cladocerans have been found. One species is endemic to Bonaire.
Assuntos
Cladocera , Animais , Biodiversidade , Índias OcidentaisRESUMO
As part of preparation for identification keys to the branchiopod crustaceans of the Neotropical Region, we re-examined many species of Anostraca that appeared to be closely related. Our examination caused us to re-evaluate the status and relationship of two branchinectid species.