Isotopic signature of the caridean shrimp Potimirim brasiliana Villalobos, 1960 in different points of a pristine area in southeastern Brazil

Author(s)

Jeniffer Natalia Teles ^[1] ; Nielson Felix Caetano França ^[2] ; João Alberto Farinelli Pantaleão ; Rafael Carvalho Santos ^[4] ; Luis Miguel Pardo ^[5] ; Fernando Luis Mantelatto ^[6]

Affiliation

^[1] Universidade de São Paulo. Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Departamento de Biologia - Brasil

^[2] Universidade de São Paulo. Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Departamento de Biologia - Brasil

^[4] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Laboratório de Biologia de Camarões Marinhos e de Água Doce - Brasil

^[5] Instituto de Ciencias Marinas y Limnologías. Universidad Austral de Chile - Chile

^[6] Universidade de São Paulo. Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Departamento de Biologia - Brasil

• Document type: Journal article
• Source: Acta Limnol. Bras.; v. 35, 2023-07-21.

Abstract

Abstract Aim The aim of this study was to investigate the isotopic signature of P. brasiliana captured in three different points along the river flow toward the sea of the Prumirim River, northern coast of the state of São Paulo/Brazil in order to test the hypothesis of similarity between isotopic signature of individuals living in separated areas of the river. Methods We used stable isotope analyses (δ13C and δ15N) at three points of the river and ANOVA and Bayesian Ellipses analyses were performed. Results Our results showed that are a differential isotopic enrichment along the river course in 13C, providing important results on the environmental condition and anthropogenic impacts in the region. In addition, the food biology of P. brasiliana was characterized as a primary consumer corroborating with the detritivores feeding habit observed in previous studies of stomach content analysis. Conclusions Our research, limited to a single area along the northern coast of the state of São Paulo, uncovers intriguing findings that merit replication in other areas within the region. This is particularly crucial given the rising number of anthropogenic influences resulting from urban development, underscoring the need for improved monitoring of these areas. (AU)

• FAPESP's process: 18/13685-5 - Integrative analysis of the Brazilian fauna of decapod crustaceans: taxonomy, phylogenetic systematics, spermiotaxonomy, morphology of post-embryonic development, ecology and conservation
• Grantee: Fernando Luis Medina Mantelatto
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 18/00739-0 - Description and identification of the morphology of the first larval stage of the shrimps of the genus Synalpheus Spence Bate, 1888 (Decapoda, Caridea, Alpheidae) of the coast of the State of São Paulo
• Grantee: Rafael de Carvalho Santos
• Support Opportunities: Scholarships in Brazil - Doctorate