High temporal and individual variation in the prevalence and intensity of chytrid infection in the southernmost Leaf Frog of the genusPithecopus(Anura, Phyllomedusidae)

Autor(es)

Ernetti, Julia R. ^{[1, 2]} ; Boschetti, Joana P. ^[2] ; Delazeri, Francieli ^[2] ; De Bastiani, Veluma I. M. ^[3] ; Pontes, Mariana R. ^[1] ; Ribeiro, Luisa P. ^[1] ; Lingnau, Rodrigo ^[4] ; Toledo, Luis Felipe ^[1] ; Lucas, Elaine M. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Biol Anim, Lab Hist Nat Anfibios Brasileiros LaHNAB, BR-13083862 Campinas, SP - Brazil

^[2] Univ Comunitaria Regiao Chapeco, Programa Posgrad Ciencias Ambientais, BR-89809900 Chapeco, SC - Brazil

^[3] Univ Comunitaria Regiao Chapeco, Lab Ecol & Quim, BR-89809900 Chapeco, SC - Brazil

^[4] Univ Tecnol Fed Parana, Dept Acad Quim & Biol, BR-85601970 Francisco Beltrao, Parana - Brazil

^[5] Univ Fed Santa Maria, Dept Zootecnia & Ciencias Biol, BR-98300000 Palmeira Das Missoes, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Hydrobiologia; v. 847, n. 16 JUL 2020.
• Citações Web of Science: 0

Resumo

Pithecopus rusticusis an endemic amphibian restricted to the type locality, in southern Brazil, and possibly endangered to extinction, due to habitat degradation. However, an additional threat to amphibians is the chytrid fungus, which has been associated with amphibian population declines and extinctions. Hence, we tested the hypothesis thatBatrachochytrium dendrobatidis(Bd) prevalence and infection load varies temporally and individually inP. rusticus, due to the influence of climatic and intrinsic individual factors. We swabbed adult individuals during two breeding seasons. Bd prevalence and infection load differed between breeding seasons and sampled months. In the middle of the first season, we found a peak of Bd load followed by a significant decrease. Only one infected individual was found in the middle of the second breeding season. Bd load was related to air temperature and rainfall, and individuals with lower scaled mass index had higher infection load. We showed that Bd incidence is highly variable in the same wild frog population. The temporal and individual decrease in zoospore load may suggest thatP. rusticuscan reverse high infection levels, and this may be evidence of efficient immunological responses present in this leaf frog. (AU)

• Processo FAPESP: 16/25358-3 - O fungo quitrídio no Brasil: da sua origem às suas consequências
• Beneficiário: Luis Felipe de Toledo Ramos Pereira
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 20/00099-0 - O fungo quitrídio e ranavírus em espécies do gênero Melanophryniscus (Anura: Bufonidae)
• Beneficiário: Mariana Retuci Pontes
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 18/23622-0 - Implicações do comércio nacional e internacional de Rã-Touro na dispersão e tolerância adquirida ao fungo quitrídio e medidas para conservação de anuros
• Beneficiário: Luisa de Pontes Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado