Eye malformation baseline in Scinax fuscovarius larvae populations that inhabit agroecosystem ponds in southern Brazil

Autor(es)

Sanchez-Domene, David ^[1] ; Navarro-Lozano, Alba ^[2] ; Acayaba, Raphael ^[3] ; Picheli, Katiuce ^[2] ; Montagner, Cassiana ^[4] ; Rossa-Feres, Denise de Cerqueira ^[2] ; da Silva, Fernando Rodrigues ^[5] ; de Almeida, Eduardo Alves ^[6]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Pesquisa Bioenergia, BR-13500230 Rio Claro, SP - Brazil

^[2] Univ Estadual Paulista, Dept Zool & Bot, Lab Ecol Teor, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[3] Univ Estadual Campinas, Fac Tecnol, BR-13484332 Limeira, SP - Brazil

^[4] Univ Estadual Campinas, Lab Quim Ambiental, Dept Quim Analit, Inst Quim, BR-13484332 Campinas, SP - Brazil

^[5] Univ Fed Sao Carlos, LET IT BE, Dept Ciencias Ambientais, BR-18052780 Sorocaba, SP - Brazil

^[6] Fundacao Univ Reg Blumenau, Dept Ciencias Nat, BR-89030903 Itoupava Seca, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Amphibia-Reptilia; v. 39, n. 3, p. 325-334, 2018.
• Citações Web of Science: 2

Resumo

Events of mass malformations in amphibian populations that have exceeded historical records have been reported over the past thirty years. Many of these events have been linked to human activities that occurred near amphibian breeding habitats. The rise in biofuels has promoted, and continues to promote, the growth of sugarcane plantations in Brazil, with the northwest region of Sao Paulo State having experienced the largest sugarcane expansion over the past few decades. In this region, we sampled temporary ponds located in agroecosystems dominated to different degrees by sugarcane. We found several larvae of Scinax fuscovarius with eye malformations (anophthalmia, aphakia, microphthalmia and sub-development). In this study, we assessed whether the distance from the ponds to the nearest sugarcane crop, the proportion of sugarcane surrounding the ponds, the presence of pesticides in the ponds, or the proportion of land uses with potential teratogens that surround the ponds were related to the frequencies of amphibian eye malformations. We found pesticides present in 11 of the 18 ponds, but none of the predictor variables was associated with the frequencies of amphibian eye malformations. Thus, our results suggest that the observed frequencies of amphibian eye malformations could be a consequence of natural mutation rates, and these data could be used as a malformation baseline for the region. This malformation baseline is the first reported for amphibians in South America and may be useful in future surveys on amphibian populations in tropical agroecosystems. (AU)

• Processo FAPESP: 13/50714-0 - Influência de processos ecológicos e evolutivos na estruturação de comunidades de anfíbios em diferentes escalas espaciais e temporais
• Beneficiário: Fernando Rodrigues da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores