Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland
We monitored the number of caiman (Caiman crocodilus yacare) nests in two ranches in the Brazilian Pantanal that cover an area of about 50.000 ha for 28 years (1987-2014). The number of nests was related to combinations of rainfall, water level, and number of days with temperature below 20°C, depend...
| Autor principal: | Campos, Zilca M.S. |
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| Outros Autores: | Mourão, Guilherme, Coutinho, Marcos Eduardo, Magnusson, William Ernest, Soriano, Balbina Maria Araújo |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
PLoS ONE
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14696 |
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oai:repositorio:1-14696 |
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oai:repositorio:1-14696 Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland Campos, Zilca M.S. Mourão, Guilherme Coutinho, Marcos Eduardo Magnusson, William Ernest Soriano, Balbina Maria Araújo Behavior, Animals Brasil Caiman Crocodilus Yacare Climate Change Controlled Study Crocodile Demography Environmental Factor Geographic Distribution Habitat Structure Nesting Nonhuman Prediction Reproduction Seasonal Variation Spatial Analysis Temporal Analysis Wetland Animals Crocodilian Female Flooding Geography Physiology Regression Analysis Season Sexual Behavior Spatio-temporal Analysis Temperature Caiman Caiman Crocodilus Yacare Crocodylidae (all Crocodiles) Rain Alligators And Crocodiles Animalss Brasil Female Floods Geography Rain Regression Analysis Reproduction Seasons Sexual Behavior, Animals Spatio-temporal Analysis Temperature Wetlands We monitored the number of caiman (Caiman crocodilus yacare) nests in two ranches in the Brazilian Pantanal that cover an area of about 50.000 ha for 28 years (1987-2014). The number of nests was related to combinations of rainfall, water level, and number of days with temperature below 20°C, depending on the area. Most of the variation in number of nests could not be predicted by the environmental variables, but could be represented mathematically by a sine wave. We were not able to identify any external driver and suspect that the regular fluctuations may have resulted from an intrinsic population process. Presently, ranches are used as management units under the legislation for ranching Pantanal caimans. However, although some breeding females were recaptured in the area after periods of up to 21 years, most were not recaptured near nests or in general surveys of the area, suggesting that females are not strongly philopatric and that ranches do not represent isolated demographic units. Copyright: © 2015 Campos et al. 2020-04-24T17:00:28Z 2020-04-24T17:00:28Z 2015 Artigo https://repositorio.inpa.gov.br/handle/1/14696 10.1371/journal.pone.0129368 en Volume 10, Número 6 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf PLoS ONE |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Behavior, Animals Brasil Caiman Crocodilus Yacare Climate Change Controlled Study Crocodile Demography Environmental Factor Geographic Distribution Habitat Structure Nesting Nonhuman Prediction Reproduction Seasonal Variation Spatial Analysis Temporal Analysis Wetland Animals Crocodilian Female Flooding Geography Physiology Regression Analysis Season Sexual Behavior Spatio-temporal Analysis Temperature Caiman Caiman Crocodilus Yacare Crocodylidae (all Crocodiles) Rain Alligators And Crocodiles Animalss Brasil Female Floods Geography Rain Regression Analysis Reproduction Seasons Sexual Behavior, Animals Spatio-temporal Analysis Temperature Wetlands |
| spellingShingle |
Behavior, Animals Brasil Caiman Crocodilus Yacare Climate Change Controlled Study Crocodile Demography Environmental Factor Geographic Distribution Habitat Structure Nesting Nonhuman Prediction Reproduction Seasonal Variation Spatial Analysis Temporal Analysis Wetland Animals Crocodilian Female Flooding Geography Physiology Regression Analysis Season Sexual Behavior Spatio-temporal Analysis Temperature Caiman Caiman Crocodilus Yacare Crocodylidae (all Crocodiles) Rain Alligators And Crocodiles Animalss Brasil Female Floods Geography Rain Regression Analysis Reproduction Seasons Sexual Behavior, Animals Spatio-temporal Analysis Temperature Wetlands Campos, Zilca M.S. Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| topic_facet |
Behavior, Animals Brasil Caiman Crocodilus Yacare Climate Change Controlled Study Crocodile Demography Environmental Factor Geographic Distribution Habitat Structure Nesting Nonhuman Prediction Reproduction Seasonal Variation Spatial Analysis Temporal Analysis Wetland Animals Crocodilian Female Flooding Geography Physiology Regression Analysis Season Sexual Behavior Spatio-temporal Analysis Temperature Caiman Caiman Crocodilus Yacare Crocodylidae (all Crocodiles) Rain Alligators And Crocodiles Animalss Brasil Female Floods Geography Rain Regression Analysis Reproduction Seasons Sexual Behavior, Animals Spatio-temporal Analysis Temperature Wetlands |
| description |
We monitored the number of caiman (Caiman crocodilus yacare) nests in two ranches in the Brazilian Pantanal that cover an area of about 50.000 ha for 28 years (1987-2014). The number of nests was related to combinations of rainfall, water level, and number of days with temperature below 20°C, depending on the area. Most of the variation in number of nests could not be predicted by the environmental variables, but could be represented mathematically by a sine wave. We were not able to identify any external driver and suspect that the regular fluctuations may have resulted from an intrinsic population process. Presently, ranches are used as management units under the legislation for ranching Pantanal caimans. However, although some breeding females were recaptured in the area after periods of up to 21 years, most were not recaptured near nests or in general surveys of the area, suggesting that females are not strongly philopatric and that ranches do not represent isolated demographic units. Copyright: © 2015 Campos et al. |
| format |
Artigo |
| author |
Campos, Zilca M.S. |
| author2 |
Mourão, Guilherme Coutinho, Marcos Eduardo Magnusson, William Ernest Soriano, Balbina Maria Araújo |
| author2Str |
Mourão, Guilherme Coutinho, Marcos Eduardo Magnusson, William Ernest Soriano, Balbina Maria Araújo |
| title |
Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| title_short |
Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| title_full |
Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| title_fullStr |
Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| title_full_unstemmed |
Spatial and temporal variation in reproduction of a generalist crocodilian, Caiman crocodilus yacare, in a seasonally flooded wetland |
| title_sort |
spatial and temporal variation in reproduction of a generalist crocodilian, caiman crocodilus yacare, in a seasonally flooded wetland |
| publisher |
PLoS ONE |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/14696 |
| _version_ |
1787142409422897152 |
| score |
11.675088 |