Isotopic signature and the trophic interactions of Aegla castro Schmitt, 1942 (Crustacea: Anomura: Aeglidae)

Autor(es)

Ana Clara Denadai ^[1] ; Vladimir Eliodoro Costa ^[2] ; Milena Regina Wolf ^[3] ; Geslaine Rafaela Lemos Gonçalves ^[4] ; Antonio Leão Castilho ^[5]

Afiliação do(s) autor(es)

^[1] Zoology - Biological Science Graduate Course, Institute of Biosciences, São Paulo State University - Brasil

^[2] São Paulo State University “Júlio de Mesquita Filho. Stable Isotopes Center “Prof. Carlos Ducatti” - Brasil

^[3] Zoology - Biological Science Graduate Course, Institute of Biosciences, São Paulo State University - Brasil

^[4] Scottish Marine Institute. Scottish Association for Marine Science - Reino Unido

^[5] Zoology - Biological Science Graduate Course, Institute of Biosciences, São Paulo State University - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Nauplius; v. 30, 2022-09-16.

Resumo

Abstract Aeglids are endemic crustaceans from the Neotropical region of South America, with great importance in the freshwater food chain. We investigated the trophic relationships in different streams containing Aegla castro Schmitt, 1942 through the use of stable isotopes, testing the hypothesis that these animals occupy a lower position and that the environments are different and will modulate the isotopic ratios of carbon and nitrogen. Aegla castro showed a low trophic level in all locations, being an important link between producers and other trophic levels. They present differences in their isotopic signature for the sampling areas, indicating that environment can be a factor that modulates the trophic webs. We did not find intraspecific differences in isotopic signatures, probably due to the similar food items consumed by both juveniles and adults foraging in the same locations. Studies like this are becoming increasingly important due to the rapid degradation of freshwater environments and the lack of trophic knowledge about these endemic animals. It is increasingly important to understand how environmental changes (such as through anthropogenic action) is interfering in freshwater trophic relationships, and how this can affect the permanence of aeglids. (AU)

• Processo FAPESP: 16/20177-0 - O ANOMÚRO Aegla castro SCHMITTI, 1942 (PLEOCYEMATA: AEGLIDAE) DAS BACIAS DO PARANAPANEMA E TIBAGI. UM TÁXON AMPLAMENTE DISTRIBUÍDO OU UM COMPLEXO DE ESPÉCIES CRÍPTICAS?
• Beneficiário: Antonio Leão Castilho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/00587-8 - Estrutura trófica de crustáceos do gênero Aegla (Pleocyemata: Anomura), endêmicos da região neotropical da América do Sul: uma abordagem utilizando a ferramenta isótopos estáveis
• Beneficiário: Ana Clara Denadai
• Modalidade de apoio: Bolsas no Brasil - Mestrado