Consulta: subjectFacets:"Trichechus"
Registros recuperados: 3
Data/hora: 11/06/2024 11:04:45

A hybrid swarm of manatees along the Guianas coastline, a peculiar environment under the influence of the Amazon River plume
Provedor de dados: 42
Autores: LIMA,CAMILLA S.; MAGALHÃES,RAFAEL F.; MARMONTEL,MIRIAM; MEIRELLES,ANA CAROLINA; CARVALHO,VITOR LUZ; LAVERGNE,ANNE; THOISY,BENOIT DE; SANTOS,FABRÍCIO R.
Abstract: The West Indian (Trichechus manatus) and Amazonian (T. inunguis) manatees have a sympatric occurrence at the mouth of the Amazon River. A result of this interspecific encounter is the occurrence of hybrids, which are frequently found along the coasts of Amapá state in Brazil, French Guiana and Guyana. Here we present new genetic evidence indicating the occurrence of a hybrid swarm along the Guianas Shield coastline, which is an interspecific hybrid zone that also separates T. manatus populations located east (Brazil) and west (Caribbean, Gulf of Mexico, Florida and Antilles). In addition, we suggest that this hybrid population occupies a peculiar mangrove-rich environment under strong influence of the Amazon River plume, which requires an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation Genetics; Hybrid zone; Introgression; Amazon River plume; Guianas coastline; Trichechus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600615

Seasonal variations in blood parameters of the Amazonian manatee, Trichechus inunguis
Provedor de dados: 52
Autores: Colares,Elton P.; Colares,Ioni G.; Bianchini,Adalto; Santos,Euclydes A.
Seasonal variations in body weight, food consumption and blood glucose, total lipids, urea, total proteins, albumin and globulins of captive Amazonian manatees, Trichechus inunguis, were determined. Body weight changed significantly along the year, increasing from autumn to spring and decreasing in summer. The mean daily food intake of paragrass remained almost unchanged along the year. Paragrass administered to the manatees showed important variations in crude protein and lipid content along the year. No significant differences in blood parameters were registered between males and females in all seasons. Further, there were no significant differences in blood total proteins, albumin and globulins along the year. On the other hand, significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian manatee; Trichechus; Blood biochemistry; Nutrition; Amazon.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200005

Food Plants Eaten by Amazonian Manatees (Trichechus inunguis, Mammalia : Sirenia)
Provedor de dados: 52
Autores: Colares,Ioni G.; Colares,Elton P.
To determine the feeding habits of the Amazonian manatee Trichechus inunguis in some Central Amazonian rivers and lakes, we compared plant epidermis found in the stomach contents and/or faeces of animals with a reference collection of plants present in the studied areas. Twenty five samples from digestive tracts of animals found dead and 25 faeces samples found floating were analyzed. From these samples, 24 aquatic macrophytes were identified. The Gramineae family was identified in 96% of the samples, Paspalum repens and Echinochloa polystachya being the most abundant in the samples. The second most frequent family was the Pontederiaceae primarily Eichhornia crassipes. During the high water period, the animals showed a more selective diet (eight identified...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian manatee; Trichechus; Food; Plants eaten; Amazon.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100011