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| CAMPOS, Z.; MAGNUSSON, W.. |
| Direct counts of crocodilians are rarely feasible and it is difficult to meet the assumptions of mark-recapture methods for most species in most habitats. Catch-out experiments are also usually not logistically or morally justifiable because it would be necessary to destroy the habitat in order to be confident that most individuals had been captured. We took advantage of the draining and filling of a large area of flooded forest during the building of the Santo Antônio dam on the Madeira River to obtain accurate estimates of the density and biomass of Paleosuchus palpebrosus. The density, 28.4 non-hatchling individuals per km2, is one of the highest reported for any crocodilian, except for species that are temporarily concentrated in small areas during... |
| Tipo: Separatas |
Palavras-chave: Crocodilia.; Crocodilo; Paleosuchus palpebrosus; Amazonia.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1053100 |
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| SILVEIRA, R. da; BOTERO-ARIAS, R.; MARIONI, B.; KLUCZKOVSKI JUNIOR, A.; MOURA, E. C.; MAFFEI, F.; ARAÚJO, D. D.; PORTELINHA, T. C. G.; ROBERTO, I. J.; MASCARENHAS JUNIOR, P. B.; MUNIZ, F.; CAMPOS, Z.; MAGNUSSON, W. E.; VERDADE, L. M.; BASSETTI, L.. |
| Tipo: Artigo de periódico |
Palavras-chave: Jacaré; Caiman yacare; Paleosuchus palpebrosus. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126479 |
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| CAMPOS, Z.; MAGNUSSON, W. E.; SORIANO, B. M. A.. |
| Abstract: We monitored the temperature of seven Paleosuchus palpebrosus nests found on the banks of streams surrounding the Brazilian Pantanal, near the southern limit of the species' distribution, between 2008 and 2013. The mean temperature of the nests between 45 and 68 days incubation, the presumed period of sex determination, varied between 26.1 and 31.5o C. Nest temperatures were 2 to 5°C higher than air temperatures, presumably due to metabolic heat of decay of material within the nests, but air temperature explained 10?50% of the variance in egg-chamber temperatures. The estimated incubation periods for nests from which eggs hatched were 80, 84, 86, 90 and 104 days with a mean of 89 (SD =9.23) days, though these are probably slight overestimates... |
| Tipo: Artigo de periódico |
Palavras-chave: Jacaré; Ninho; Incubação; Paleosuchus palpebrosus; Egg incubation. |
| Ano: 2022 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148356 |
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| CAMPOS, Z.; MOURAO, G.; MAGNUSSON, W. E.. |
| Run-of-the-river hydroelectric dams cause changes in seasonal inundation of the floodplains, and this may cause displacement of semi-aquatic vertebrates present before dam construction. This study evaluated the movement of crocodilians before and after the filling of the Santo Antonio hydroelectric reservoir on the Madeira River in the Brazilian Amazon, which occurred in November 2011. We radio-tracked four adult male Paleosuchus palpebrosus and four adult male Paleosuchus trigonatus before and after the formation of the reservoir between 2011 and 2013. The home ranges of the P. palpebrosus varied from < 1 km2 to 91 km2 and the home ranges of the P. trigonatus varied from < 1km2 to 5 km2 . The species responded differently to time since filling and... |
| Tipo: Separatas |
Palavras-chave: Crocodilo; Barragem; Caiman; Paleosuchus palpebrosus; Paleosuchus trigonatus; Dams (hydrology). |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1080949 |
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