Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats
Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in longlived reptiles is poorly understood. We analyzed growth rates of Mel...
| Autor principal: | Thorbjarnarson, John B. |
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| Outros Autores: | Silveira, Ronis da, Campos, Zilca M.S., Magnusson, William Ernest |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Amphibia Reptilia
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17939 |
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oai:repositorio:1-17939 |
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oai:repositorio:1-17939 Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats Thorbjarnarson, John B. Silveira, Ronis da Campos, Zilca M.S. Magnusson, William Ernest Crocodilian Demography Density Dependence Environmental Effect Fecundity Geographical Variation Growth Rate Habitat Type Mark-recapture Method Population Modeling Survival Wild Population Amazonia Brasil Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in longlived reptiles is poorly understood. We analyzed growth rates of Melanosuchus niger and Caiman crocodilus coexisting in two areas of the Brazilian Amazon with very different environmental characteristics. Growth rates of Caiman crocodilus at the two sites were similar, but M. niger grew more slowly in the area with higher productivity and higher density of caimans. Growth rates of the same species from other sites and of the temperate-zone Alligator mississippiensis indicate large differences among sites, but little evidence that these differences are primarily due to differences in productivity or temperature. Demographic models used to estimate sustained yields from caiman harvests should take into account the likely importance of density-dependent growth. © 2013 Koninklijke Brill NV, Leiden. 2020-06-15T21:50:16Z 2020-06-15T21:50:16Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17939 10.1163/15685381-00002896 en Volume 34, Número 4, Pags. 437-449 Restrito Amphibia Reptilia |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Crocodilian Demography Density Dependence Environmental Effect Fecundity Geographical Variation Growth Rate Habitat Type Mark-recapture Method Population Modeling Survival Wild Population Amazonia Brasil |
| spellingShingle |
Crocodilian Demography Density Dependence Environmental Effect Fecundity Geographical Variation Growth Rate Habitat Type Mark-recapture Method Population Modeling Survival Wild Population Amazonia Brasil Thorbjarnarson, John B. Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| topic_facet |
Crocodilian Demography Density Dependence Environmental Effect Fecundity Geographical Variation Growth Rate Habitat Type Mark-recapture Method Population Modeling Survival Wild Population Amazonia Brasil |
| description |
Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in longlived reptiles is poorly understood. We analyzed growth rates of Melanosuchus niger and Caiman crocodilus coexisting in two areas of the Brazilian Amazon with very different environmental characteristics. Growth rates of Caiman crocodilus at the two sites were similar, but M. niger grew more slowly in the area with higher productivity and higher density of caimans. Growth rates of the same species from other sites and of the temperate-zone Alligator mississippiensis indicate large differences among sites, but little evidence that these differences are primarily due to differences in productivity or temperature. Demographic models used to estimate sustained yields from caiman harvests should take into account the likely importance of density-dependent growth. © 2013 Koninklijke Brill NV, Leiden. |
| format |
Artigo |
| author |
Thorbjarnarson, John B. |
| author2 |
Silveira, Ronis da Campos, Zilca M.S. Magnusson, William Ernest |
| author2Str |
Silveira, Ronis da Campos, Zilca M.S. Magnusson, William Ernest |
| title |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| title_short |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| title_full |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| title_fullStr |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| title_full_unstemmed |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats |
| title_sort |
growth rates of black caiman (melanosuchus niger) and spectacled caiman (caiman crocodilus) from two different amazonian flooded habitats |
| publisher |
Amphibia Reptilia |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17939 |
| _version_ |
1787142962592874496 |
| score |
11.675608 |