12 documents found, page 1 of 2

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Conservation and management implications of nest-site selection of the sympatri...

Villamarín, Francisco; Marioni, Boris; Thorbjarnarson, John B.; Nelson, Bruce Walker; Botero-Arias, Robinson; Magnusson, William Ernest

Management of crocodilians is often based on source-sink dynamics, protecting breeding habitat and concentrating hunting in other areas. Nest distributions shed light on habitat use by breeding populations, which might be used as a basis for monitoring and management. The heterogeneous spatial distribution of Melanosuchus niger and Caiman crocodilus in Amazonia has been suggested to reflect past hunting pressur...

Date: 2020   |   Origin: Oasisbr

The metabolic cost of nesting: body condition and blood parameters of Caiman cr...

Barão-Nóbrega, José António Lemos; Marioni, Boris; Botero-Arias, Robinson; Nogueira, António J.A.; Lima, Emerson Silva; Magnusson, William Ernest

Although nesting ecology is well studied in several crocodilian species, it is not known how nest attendance influences physiology and body condition of nesting females. In this study, we describe body condition and serum biochemical values of nesting female, non-nesting female and male spectacled caiman (Caiman crocodilus) and black caiman (Melanosuchus niger) in two areas of Central Amazonia. We also evaluate...

Date: 2020   |   Origin: Oasisbr

Avaliação do risco de extinção do jacaré-tinga Caiman crocodilus (Linnaeus, 175...

Farias, Izeni Pires; Marioni, Boris; M., Verdade, L.; Bassetti, Luís; Coutinho, Marcos E.; Mendonça, Sônia H. S. T. de; Vieira, Tiago Quaggio

Date: 2020   |   Origin: Oasisbr

Avaliação do risco de extinção do jacaré-do-pantanal Caiman yacare (Daudin, 180...

Farias, Izeni Pires; Marioni, Boris; Verdade, Luciano Martins; Bassetti, Luis Antonio Bochetti; Coutinho, Marcos E.; Mendonça, Sônia H. S. T. de

Date: 2020   |   Origin: Oasisbr

Avaliação do risco de extinção do jacaré-açu Melanosuchus niger (Daudin, 1802) ...

Marioni, Boris; Farias, Izeni Pires; Verdade, Luciano Martins; Bassetti, Luis Antonio Bochetti; Coutinho, Marcos E.; Mendonça, Sonia H. S. T.

Date: 2020   |   Origin: Oasisbr

Predicting suitable nesting sites for the Black caiman (Melanosuchus niger Spix...

Banon, Gabriela Paola Ribeiro; Banon, Gerald; Villamarín, Francisco; Arraut, E. M.; Moulatlet, Gabriel M.; Rennó, Camilo Daleles; Banon, Lise Christine

After many years of illegal hunting and commercialization, the populations of the Black caiman (Melanosuchus niger) have been recovering during the last four decades due to the enforcement of a legislation that inhibits their international commercialization. Protecting nesting sites, in which vulnerable life forms (as reproductive females, eggs, and neonates) spend considerable time, is one of the most appropri...

Date: 2020   |   Origin: Oasisbr

Avaliação do risco de extinção do jacaré-coroa Paleosuchus trigonatus (Schneird...

Campos, Zilca Maria da Silva; Marioni, Boris; Farias, Izeni Pires; M., Verdade, L.; Bassetti, Luís; Coutinho, Marcos E.; Mendonça, Sônia H. S. T. de

Date: 2020   |   Origin: Oasisbr

Avaliação do risco de extinção do jacaré-paguá Paleosuchus palpebrosus (Schneid...

Campos, Zilca; Marioni, Boris; Farias, Izeni Pires; Verdade, Luciano Martins; Bassetti, Luis Antonio Bochetti; Coutinho, Marcos E.

Date: 2020   |   Origin: Oasisbr

Body size is more important than diet in determining stable-isotope estimates o...

Villamarín, Francisco; Jardine, Timothy D.; Bunn, Stuart; Marioni, Boris; Magnusson, William Ernest

The trophic position of a top predator, synonymous with food-chain length, is one of the most fundamental attributes of ecosystems. Stable isotope ratios of nitrogen (δ 15N) have been used to estimate trophic position of organisms due to the predictable enrichment of 15N in consumer tissues relative to their diet. Previous studies in crocodilians have found upward ontogenetic shifts in their 'trophic position'....

Date: 2020   |   Origin: Oasisbr

Correction to: The metabolic cost of nesting: body condition and blood paramete...

Barão-Nóbrega, José António Lemos; Marioni, Boris; Botero-Arias, Robinson; Nogueira, António J.A.; Lima, Emerson Silva; Magnusson, William Ernest

Although nesting ecology is well studied in several crocodilian species, it is not known how nest attendance influences physiology and body condition of nesting females. In this study, we describe body condition and serum biochemical values of nesting female, non-nesting female and male spectacled caiman (Caiman crocodilus) and black caiman (Melanosuchus niger) in two areas of Central Amazonia. We also evaluate...

Date: 2020   |   Origin: Oasisbr

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