Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil

Guterres-Pazin, Michelle G.; Marmontel, Míriam; Weber Rosas, Fernando Cesar; Pazin, Victor F.V.; Venticinque, Eduardo Martins

Artigo

Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil

The Amazonian manatee (Trichechus inunguis) is an exclusively herbivorous freshwater mammal. Between 1994 and 2008, 230 fecal and 16 stomach content samples from wild Amazonian manatees were obtained. The material was collected during both dry and wet seasons in the sustainable devel-opment reserves...

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Autor principal:	Guterres-Pazin, Michelle G.
Outros Autores:	Marmontel, Míriam, Weber Rosas, Fernando Cesar, Pazin, Victor F.V., Venticinque, Eduardo Martins
Grau:	Artigo
Idioma:	English
Publicado em:	Aquatic Mammals 2020
Assuntos:	Diet Feeding Ecology Floodplain Food Availability Mammal New Species Seasonality Sustainable Development Brasil Azolla Caroliniana Hymenachne Amplexicaulis Limnobium Spongia Mammalia Oryza Grandiglumis Paspalum Fluitans Poaceae Sirenia Trichechus Inunguis
Acesso em linha:	https://repositorio.inpa.gov.br/handle/1/17728

id	oai:repositorio:1-17728
recordtype	dspace
spelling	oai:repositorio:1-17728 Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil Guterres-Pazin, Michelle G. Marmontel, Míriam Weber Rosas, Fernando Cesar Pazin, Victor F.V. Venticinque, Eduardo Martins Diet Feeding Ecology Floodplain Food Availability Mammal New Species Seasonality Sustainable Development Brasil Azolla Caroliniana Hymenachne Amplexicaulis Limnobium Spongia Mammalia Oryza Grandiglumis Paspalum Fluitans Poaceae Sirenia Trichechus Inunguis The Amazonian manatee (Trichechus inunguis) is an exclusively herbivorous freshwater mammal. Between 1994 and 2008, 230 fecal and 16 stomach content samples from wild Amazonian manatees were obtained. The material was collected during both dry and wet seasons in the sustainable devel-opment reserves of Mamirauá (MSDR) and Amanã (ASDR) from floodplain and terra firme and igapó (not subject to long-term flooding) habitats, respec-tively. Species constituting the diet of the Amazonian manatee were identified through a comparative anal-ysis with a reference collection of epidermis from 69 plant species of potential consumption by the spe-cies. Forty-nine plant species were identified in the species' diet. In the MSDR, 32 plant species were found-18 during the dry season and 28 during the wet season. In the ASDR, 48 species were identified of which 40 occurred in both periods. A total of 30 new species were added to the Amazonian mana-tee diet known to date. The species that were found most frequently in the material were Hymenachne amplexicaulis, Oryza grandiglumis, Paspalum repens, Azolla caroliniana, and Limnobium spongia. Poaceae was the family with the greatest frequency of occurrence (91.5%). Plant species most consumed present emergent or floating habits. There was a dif-ference in the composition of plant species found in manatee feces between the dry and wet seasons (p = 0.0002) but not between floodplain and igapó. Results show that the Amazonian manatee feeds on a great variety of plant species during the wet and dry season alike, and both in floodplain and igapó envi-ronments. Therefore, food availability alone does not represent a determining factor to explain the seasonal migration of the species. 2020-06-15T21:48:58Z 2020-06-15T21:48:58Z 2014 Artigo https://repositorio.inpa.gov.br/handle/1/17728 10.1578/AM.40.2.2014.139 en Volume 40, Número 2, Pags. 139-149 Restrito Aquatic Mammals
institution	Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection	INPA-RI
language	English
topic	Diet Feeding Ecology Floodplain Food Availability Mammal New Species Seasonality Sustainable Development Brasil Azolla Caroliniana Hymenachne Amplexicaulis Limnobium Spongia Mammalia Oryza Grandiglumis Paspalum Fluitans Poaceae Sirenia Trichechus Inunguis
spellingShingle	Diet Feeding Ecology Floodplain Food Availability Mammal New Species Seasonality Sustainable Development Brasil Azolla Caroliniana Hymenachne Amplexicaulis Limnobium Spongia Mammalia Oryza Grandiglumis Paspalum Fluitans Poaceae Sirenia Trichechus Inunguis Guterres-Pazin, Michelle G. Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
topic_facet	Diet Feeding Ecology Floodplain Food Availability Mammal New Species Seasonality Sustainable Development Brasil Azolla Caroliniana Hymenachne Amplexicaulis Limnobium Spongia Mammalia Oryza Grandiglumis Paspalum Fluitans Poaceae Sirenia Trichechus Inunguis
description	The Amazonian manatee (Trichechus inunguis) is an exclusively herbivorous freshwater mammal. Between 1994 and 2008, 230 fecal and 16 stomach content samples from wild Amazonian manatees were obtained. The material was collected during both dry and wet seasons in the sustainable devel-opment reserves of Mamirauá (MSDR) and Amanã (ASDR) from floodplain and terra firme and igapó (not subject to long-term flooding) habitats, respec-tively. Species constituting the diet of the Amazonian manatee were identified through a comparative anal-ysis with a reference collection of epidermis from 69 plant species of potential consumption by the spe-cies. Forty-nine plant species were identified in the species' diet. In the MSDR, 32 plant species were found-18 during the dry season and 28 during the wet season. In the ASDR, 48 species were identified of which 40 occurred in both periods. A total of 30 new species were added to the Amazonian mana-tee diet known to date. The species that were found most frequently in the material were Hymenachne amplexicaulis, Oryza grandiglumis, Paspalum repens, Azolla caroliniana, and Limnobium spongia. Poaceae was the family with the greatest frequency of occurrence (91.5%). Plant species most consumed present emergent or floating habits. There was a dif-ference in the composition of plant species found in manatee feces between the dry and wet seasons (p = 0.0002) but not between floodplain and igapó. Results show that the Amazonian manatee feeds on a great variety of plant species during the wet and dry season alike, and both in floodplain and igapó envi-ronments. Therefore, food availability alone does not represent a determining factor to explain the seasonal migration of the species.
format	Artigo
author	Guterres-Pazin, Michelle G.
author2	Marmontel, Míriam Weber Rosas, Fernando Cesar Pazin, Victor F.V. Venticinque, Eduardo Martins
author2Str	Marmontel, Míriam Weber Rosas, Fernando Cesar Pazin, Victor F.V. Venticinque, Eduardo Martins
title	Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
title_short	Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
title_full	Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
title_fullStr	Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
title_full_unstemmed	Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil
title_sort	feeding ecology of the amazonian manatee (trichechus inunguis) in the mamirauá and amanã sustainable development reserves, brazil
publisher	Aquatic Mammals
publishDate	2020
url	https://repositorio.inpa.gov.br/handle/1/17728
_version_	1787141630371823616
score	11.755432

Feeding ecology of the amazonian manatee (Trichechus inunguis) in the mamirauá and amanã sustainable development reserves, Brazil

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