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Using modified trapping regimes to understand the behavioral and spatial ecology of Philornis downsi (Diptera: Muscidae).
Boulton, Rebecca A; Cahuana, Andrea; Lahuatte, Paola F; Ramírez, Erika; Sevilla, Christian; Causton, Charlotte E.
Afiliação
  • Boulton RA; Biological and Environmental Sciences, Faculty of Natural Sciences, University of Stirling, FK9 4NF, UK.
  • Cahuana A; Laboratory of Genetics, Plant Sciences Group, Wageningen University and Research, 6708 PB, The Netherlands.
  • Lahuatte PF; Charles Darwin Research Station, Charles Darwin Foundation, Santa Cruz, Galapagos Islands, Ecuador.
  • Ramírez E; Charles Darwin Research Station, Charles Darwin Foundation, Santa Cruz, Galapagos Islands, Ecuador.
  • Sevilla C; Charles Darwin Research Station, Charles Darwin Foundation, Santa Cruz, Galapagos Islands, Ecuador.
  • Causton CE; Galapagos National Park Directorate, Santa Cruz, Galapagos Islands, Ecuador.
Environ Entomol ; 53(3): 315-325, 2024 Jun 13.
Article em En | MEDLINE | ID: mdl-38483352
ABSTRACT
The avian vampire fly Philornis downsi (Dodge & Aitken) (Diptera Muscidae) is native to continental South America and the Caribbean, but invasive in the Galapagos Archipelago. The larvae of P. downsi feed on the blood and tissues of the nestlings of 75% of the small land bird species that are endemic or native to Galapagos, causing high in-nest mortality and severe population declines in some species. Efficient trapping techniques are vital to safeguarding these birds in the short term as well as for monitoring fly populations, but basic information about the ecology of the fly is still needed to help develop a species-appropriate trapping method. In this study, we used a novel trapping regime with a vertical distribution to make inferences about P. downsi's behavioral and spatial ecology and to optimize trap catch. Our results showed that male and female P. downsi were trapped in greater numbers below the canopy (3.1-7.5 m), lower down than other commonly caught insect species (5.1-11.5 m). Notably, the effect of trap height remained consistent across seasons and different weather conditions. These findings suggest that P. downsi tend to move at heights where their hosts nest (at or below the canopy) and do not spend time above the canopy. This also makes it unlikely that strategies such as hill-topping or aerial swarming are being used to locate mates. As such, trapping and control efforts should be focused below the canopy in forests with similar canopy heights to effectively capture P. downsi and reduce bycatch of other insects.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Muscidae Limite: Animals País/Região como assunto: America do sul / Ecuador Idioma: En Revista: Environ Entomol Ano de publicação: 2024 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Muscidae Limite: Animals País/Região como assunto: America do sul / Ecuador Idioma: En Revista: Environ Entomol Ano de publicação: 2024 Tipo de documento: Article País de publicação: Reino Unido