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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Physiological responses of Brazilian amphibians to an enzootic infection of the chytrid fungus Batrachochytrium dendrobatidis

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Bovo, Rafael P. [1] ; Andrade, Denis V. [1] ; Toledo, Luis Felipe [2] ; Longo, Ana V. [3] ; Rodriguez, David [4] ; Haddad, Celio F. B. [1] ; Zamudio, Kelly R. [3] ; Guilherme Becker, C. [1]
Total Authors: 8
[1] Univ Estadual Paulista, Dept Zool, Cp 199, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Estadual Campinas, Inst Biol, Dept Biol Anim, LaHNAB, Rua Monteiro Lobato 255, BR-13083862 Campinas, SP - Brazil
[3] Cornell Univ, Dept Ecol & Evolutionary Biol, Ithaca, NY 14853 - USA
[4] Texas State Univ, Dept Biol, San Marcos, TX 78666 - USA
Total Affiliations: 4
Document type: Journal article
Source: DISEASES OF AQUATIC ORGANISMS; v. 117, n. 3, p. 245-252, JAN 13 2016.
Web of Science Citations: 7

Pathophysiological effects of clinical chytridiomycosis in amphibians include disorders of cutaneous osmoregulation and disruption of the ability to rehydrate, which can lead to decreased host fitness or mortality. Less attention has been given to physiological responses of hosts where enzootic infections of Batrachochytrium dendrobatidis (Bd) do not cause apparent population declines in the wild. Here, we experimentally tested whether an enzootic strain of Bd causes significant mortality and alters host water balance (evaporative water loss, EWL; skin resistance, R-s; and water uptake, WU) in individuals of 3 Brazilian amphibian species (Dendropsophus minutus, n = 19; Ischnocnema parva, n = 17; Brachycephalus pitanga, n = 15). Infections with enzootic Bd caused no significant mortality, but we found an increase in Rs in 1 host species concomitant with a reduction in EWL. These results suggest that enzootic Bd infections can indeed cause sub-lethal effects that could lead to reduction of host fitness in Brazilian frogs and that these effects vary among species. Thus, our findings underscore the need for further assessment of physiological responses to Bd infections in different host species, even in cases of sub-clinical chytridiomycosis and long-term enzootic infections in natural populations. (AU)

FAPESP's process: 11/51694-7 - Into the heart of an epidemic: a US-Brazil collaboration for integrative studies of the amphibian-killing fungus in Brazil
Grantee:Luis Felipe de Toledo Ramos Pereira
Support type: Regular Research Grants
FAPESP's process: 10/05473-6 - Ecophysiology of Bokermannohyla alvarengai (Bokermann 1956): an endemic treefrog from altitude regions in Brazil.
Grantee:Denis Otavio Vieira de Andrade
Support type: Regular Research Grants
FAPESP's process: 13/04190-9 - Thermal physiology and water balance in anurans along an altitudinal gradient in the Atlantic Rainforest
Grantee:Denis Otavio Vieira de Andrade
Support type: Regular Research Grants
FAPESP's process: 10/20061-6 - Thermal physiology and water balance at different altitudinal gradients in Atlantic rainforest anurans
Grantee:Rafael Parelli Bovo
Support type: Scholarships in Brazil - Doctorate