Ichthyofauna from "serranias costeiras" of the Ribeira de Iguape River basin, Southeast Brazil

Author(s)

Cetra, Mauricio ; Mattox, George ; Romero, Perla Bahena ; Hernandez Escobar, Stephanie ; Aparecida Guimaraes, Euriluce ; Felipe Turin, Rubens Antonio

• Document type: Journal article
• Source: Biota Neotropica; v. 20, n. 4, p. 12-pg., 2020-01-01.

Abstract

The Ribeira de Iguape River basin has about 100 fish species. This study aimed to characterize the fish community from "serranias costeiras" of the Ribeira de Iguape River basin. Samplings were conducted with electrofishing during the dry season in the years 2018-2019. The sampling effort consisted of 30 streams stretches. As a result, 50 species were captured, distributed in 37 genera, 11 families, and six orders. The species richness estimate (SChaol) was 57 species, and the coverage estimate for the entire data set was C = 0.998. Harttia kronei and Chasmocranus lopezae are endemic species and can be used as bioindicators of streams in this river basin. We captured approximately nine species by stream stretch. Beta diversity was found to be more critical for gamma diversity than alpha diversity. This finding highlights the streams environmental heterogeneity importance for maintaining regional fish diversity. We captured eight individuals of the threatened species Spintherobolus papilliferus and this indicates an expansion in the geographic distribution of this species. (AU)

• FAPESP's process: 17/25860-3 - Effect of Small Hydroelectric Power Plants (SHPPs) and Hydroelectric Power Plants (HPP) in Atlantic Forest Streams Fish Communities
• Grantee: Mauricio Cetra
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/19872-1 - Effect of small hydroelectric power plants (SHPPs) and hydroelectric power plants (HPP) in Atlantic Forest streams fish communities
• Grantee: Rubens Antonio Felipe Turin
• Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training