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You are here: Home / Associated publications / Belgian Journal of Zoology / Bibliographic References / Calling activity of crossodactylus gaudichaudii (Anura : Hylodidae) in an Atlantic rainforest area at IIha grande, Rio de janeiro, Brasil

Mauricio Almeida-Gomes, Monique Van Sluys and Carlos Duarte Rocha (2007)

Calling activity of crossodactylus gaudichaudii (Anura : Hylodidae) in an Atlantic rainforest area at IIha grande, Rio de janeiro, Brasil

BELGIAN JOURNAL OF ZOOLOGY, 137(2):203-207.

The calling activity in anuran amphibians can be influenced by several environmental variables that can affect such activity in different ways. In the present study we investigated the relationship of the daily calling activity of males of the diurnal frog Crossodactylus gaudichaudi with some environmental variables. The study was carried out between July 2003 and June 2005 in an area of Atlantic forest in Ilha Grande, an island located on the southern coast of the State of Rio de Janeiro. The observations were made in three fixed points in the forest, adjacent to streams, always from 05:00 to 19:00h, one day per month. We verified that the males of C. gaudichaudii have strictly diurnal calling activity, staying active during all months of the year. The highest counts of emitted calls were registered, in general, at the beginning and at the end of each day sampled. Air temperature, relative humidity and light intensity affected the daily rate of calling activity in different ways, with air temperature and light intensity seeming to be the factors that influence most importantly the activity of the species. The photoperiod seemed to be the main factor regulating the extension of the calling activity along the year in males of C. gaudichaudii.

calling activity; Atlantic rainforest; streams; Crossodactylus gaudichaudii
BJZ

ISSN 2295-0451 (online version)
ISSN 0777-6279 (printed version)
impact factor 2015: 0,87.

Editor-in-Chief:
Prof. Dr. Isa Schön
Royal Belgian Institute of Natural Sciences
Vautierstraat 29
1000 Brussels, Belgium

 



1863-1903
Annales de la Société malacologique de Belgique
 
1903-1923
​Annales de la Société royale malacologique et zoologique de Belgique
 
1923-1989
Annales de la Société Royale Zoologique de Belgique
 
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Belgian Journal of Zoology