Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)

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Size distribution, sex ratio and use of burrows of the burrowing toad Rhinella fernandezae were studied in Buenos Aires province, Argentina. Two sites separated by approximately 300 m were studied: one was a road next to a swamp, and the other a garden of a country house located further from the swa...

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Detalles Bibliográficos
Autores principales: Sanchez, L.C., Busch, M.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2008
Materias:
Argentina
Burrows use
Rhinella fernandezae
Sex ratio
Size distribution
animal
article
classification
ecosystem
female
histology
male
physiology
population density
sex ratio
toad
Animals
Bufonidae
Ecosystem
Female
Male
Population Density
Sex Ratio
Anura
Rhinophrynidae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15196984_v68_n1_p137_Sanchez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_15196984_v68_n1_p137_Sanchez
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spelling paperaa:paper_15196984_v68_n1_p137_Sanchez2023-06-12T16:50:34Z Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae) Braz. J. Biol. 2008;68(1):137-140 Sanchez, L.C. Busch, M. Argentina Burrows use Rhinella fernandezae Sex ratio Size distribution animal Argentina article classification ecosystem female histology male physiology population density sex ratio toad Animals Argentina Bufonidae Ecosystem Female Male Population Density Sex Ratio Anura Bufonidae Rhinophrynidae Size distribution, sex ratio and use of burrows of the burrowing toad Rhinella fernandezae were studied in Buenos Aires province, Argentina. Two sites separated by approximately 300 m were studied: one was a road next to a swamp, and the other a garden of a country house located further from the swamp. We identified toad burrows, and individuals were sexed, measured and given an individual mark. Burrows were examined in subsequent months after the first sampling to assess the presence of toads. We found significant differences in the size distribution between areas, being the proportion of juveniles greater at the site next to the swamp where the reproduction of the species was observed. This result may suggest that the site located near to the swamp functions as a source habitat of individuals that migrate to the other site, where recruitment would be very scarce. Sex proportion of adults did not differ from 1:1 in neither the total population nor in each site, suggesting that there was not differential mortality by sex. Some toads changed burrows throughout the study period, but there were not differences in the frequency of change between adults and juveniles. Fil:Sanchez, L.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Busch, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15196984_v68_n1_p137_Sanchez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Argentina
Burrows use
Rhinella fernandezae
Sex ratio
Size distribution
animal
Argentina
article
classification
ecosystem
female
histology
male
physiology
population density
sex ratio
toad
Animals
Argentina
Bufonidae
Ecosystem
Female
Male
Population Density
Sex Ratio
Anura
Bufonidae
Rhinophrynidae
spellingShingle Argentina
Burrows use
Rhinella fernandezae
Sex ratio
Size distribution
animal
Argentina
article
classification
ecosystem
female
histology
male
physiology
population density
sex ratio
toad
Animals
Argentina
Bufonidae
Ecosystem
Female
Male
Population Density
Sex Ratio
Anura
Bufonidae
Rhinophrynidae
Sanchez, L.C.
Busch, M.
Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
topic_facet Argentina
Burrows use
Rhinella fernandezae
Sex ratio
Size distribution
animal
Argentina
article
classification
ecosystem
female
histology
male
physiology
population density
sex ratio
toad
Animals
Argentina
Bufonidae
Ecosystem
Female
Male
Population Density
Sex Ratio
Anura
Bufonidae
Rhinophrynidae
description Size distribution, sex ratio and use of burrows of the burrowing toad Rhinella fernandezae were studied in Buenos Aires province, Argentina. Two sites separated by approximately 300 m were studied: one was a road next to a swamp, and the other a garden of a country house located further from the swamp. We identified toad burrows, and individuals were sexed, measured and given an individual mark. Burrows were examined in subsequent months after the first sampling to assess the presence of toads. We found significant differences in the size distribution between areas, being the proportion of juveniles greater at the site next to the swamp where the reproduction of the species was observed. This result may suggest that the site located near to the swamp functions as a source habitat of individuals that migrate to the other site, where recruitment would be very scarce. Sex proportion of adults did not differ from 1:1 in neither the total population nor in each site, suggesting that there was not differential mortality by sex. Some toads changed burrows throughout the study period, but there were not differences in the frequency of change between adults and juveniles.
format Artículo
Artículo
publishedVersion
author Sanchez, L.C.
Busch, M.
author_facet Sanchez, L.C.
Busch, M.
author_sort Sanchez, L.C.
title Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
title_short Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
title_full Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
title_fullStr Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
title_full_unstemmed Population traits of the burrowing toad Rhinella fernandezae (Gallardo, 1957) (Anura, Bufonidae)
title_sort population traits of the burrowing toad rhinella fernandezae (gallardo, 1957) (anura, bufonidae)
publishDate 2008
url http://hdl.handle.net/20.500.12110/paper_15196984_v68_n1_p137_Sanchez
work_keys_str_mv AT sanchezlc populationtraitsoftheburrowingtoadrhinellafernandezaegallardo1957anurabufonidae
AT buschm populationtraitsoftheburrowingtoadrhinellafernandezaegallardo1957anurabufonidae
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