Produção Nacional
Revisado por pares
Spatial distribution of Batrachochytrium dendrobatidis in South American caecilians
2017; Inter-Research; Volume: 124; Issue: 2 Linguagem: Inglês
10.3354/dao03114
ISSN1616-1580
AutoresCarolina Lambertini, CG Becker, Cecilia Bardier, Domingos da Silva Leite, Luı́s Felipe Toledo,
Tópico(s)Plant and animal studies
ResumoDAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 124:109-116 (2017) - DOI: https://doi.org/10.3354/dao03114 Spatial distribution of Batrachochytrium dendrobatidis in South American caecilians Carolina Lambertini1,*, C. Guilherme Becker2, Cecilia Bardier1,3, Domingos da Silva Leite4, Luís Felipe Toledo1 1Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB), Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo 13083-862, Brazil 2Departamento de Zoologia, Universidade Estadual Paulista, Rio Claro, São Paulo 13506-900, Brazil 3Laboratorio de Sistemática e Historia Natural de Vertebrados, Instituto de Ecología y Ciencias ambientales, Universidad de la República, Montevideo 11400, Uruguay 4Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo 13083-862, Brazil *Corresponding author: lambertini.carol@gmail.com ABSTRACT: The amphibian-killing fungus Batrachochytrium dendrobatidis (Bd) is linked to population declines in anurans and salamanders globally. To date, however, few studies have attempted to screen Bd in live caecilians; Bd- positive caecilians have only been reported in Africa and French Guiana. Here, we performed a retrospective survey of museum preserved specimens to (1) describe spatial patterns of Bd infection in Gymnophiona across South America and (2) test whether areas of low climatic suitability for Bd in anurans predict Bd spatial epidemiology in caecilians. We used quantitative PCR to detect Bd in preserved caecilians collected over a 109 yr period, and performed autologistic regressions to test the effect of bioclimatic metrics of temperature and precipitation, vegetation density, and elevation on the likelihood of Bd occurrence. We detected an overall Bd prevalence of 12.4%, with positive samples spanning the Uruguayan savanna, Brazil's Atlantic Forest, and the Amazon basin. Our autologistic models detected a strong effect of macroclimate, a weaker effect of vegetation density, and no effect of elevation on the likelihood of Bd occurrence. Although most of our Bd-positive records overlapped with reported areas of high climatic suitability for the fungus in the Neotropics, many of our new Bd-positive samples extend far into areas of poor suitability for Bd in anurans. Our results highlight an important gap in the study of amphibian chytridiomycosis: the potential negative impact of Bd on Neotropical caecilians and the hypothetical role of caecilians as Bd reservoirs. KEY WORDS: Chytrid infection dynamics · Gymnophiona · Life history · Environmental variables · Museum specimens Full text in pdf format Supplementary material PreviousNextCite this article as: Lambertini C, Becker CG, Bardier C, da Silva Leite D, Toledo LF (2017) Spatial distribution of Batrachochytrium dendrobatidis in South American caecilians. Dis Aquat Org 124:109-116. https://doi.org/10.3354/dao03114 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 124, No. 2. Online publication date: April 20, 2017 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2017 Inter-Research.
Referência(s)