Territoriality of giant otter groups in an area with seasonal flooding

Leuchtenberger, Caroline; Magnusson, William Ernest; Mourão, Guilherme

Artigo

Territoriality of giant otter groups in an area with seasonal flooding

Territoriality carries costs and benefits, which are commonly affected by the spatial and temporal abundance and predictability of food, and by intruder pressure. Giant otters (Pteronura brasiliensis) live in groups that defend territories along river channels during the dry season using chemical si...

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Autor principal:	Leuchtenberger, Caroline
Outros Autores:	Magnusson, William Ernest, Mourão, Guilherme
Grau:	Artigo
Idioma:	English
Publicado em:	PLoS ONE 2020
Assuntos:	Adult Odor Otter Reproductive Success Season Territoriality Animals Behavior, Animals Flooding Otter Physiology Reproduction River Animalss Behavior, Animals Floods Otters Reproduction Rivers Seasons Territoriality
Acesso em linha:	https://repositorio.inpa.gov.br/handle/1/14701

id	oai:repositorio:1-14701
recordtype	dspace
spelling	oai:repositorio:1-14701 Territoriality of giant otter groups in an area with seasonal flooding Leuchtenberger, Caroline Magnusson, William Ernest Mourão, Guilherme Adult Odor Otter Reproductive Success Season Territoriality Animals Behavior, Animals Flooding Otter Physiology Reproduction River Animalss Behavior, Animals Floods Otters Reproduction Rivers Seasons Territoriality Territoriality carries costs and benefits, which are commonly affected by the spatial and temporal abundance and predictability of food, and by intruder pressure. Giant otters (Pteronura brasiliensis) live in groups that defend territories along river channels during the dry season using chemical signals, loud vocalizations and agonistic encounters. However, little is known about the territoriality of giant otters during the rainy season, when groups leave their dry season territories and follow fish dispersing into flooded areas. The objective of this study was to analyze long-term territoriality of giant otter groups in a seasonal environment. The linear extensions of the territories of 10 giant otter groups were determined based on locations of active dens, latrines and scent marks in each season. Some groups overlapped the limits of neighboring territories. The total territory extent of giant otters was correlated with group size in both seasons. The extent of exclusive territories of giant otter groups was negatively related to the number of adults present in adjacent groups. Territory fidelity ranged from 0 to 100%between seasons. Some groupsmaintained their territory for long periods, which demanded constant effort in marking and re-establishing their territories during the wet season. These results indicate that the defense capacity of groups had an important role in the maintenance of giant otter territories across seasons, which may also affect the reproductive success of alpha pairs. © 2015 Leuchtenberger et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 2020-04-24T17:00:33Z 2020-04-24T17:00:33Z 2015 Artigo https://repositorio.inpa.gov.br/handle/1/14701 10.1371/journal.pone.0126073 en Volume 10, Número 5 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf PLoS ONE
institution	Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection	INPA-RI
language	English
topic	Adult Odor Otter Reproductive Success Season Territoriality Animals Behavior, Animals Flooding Otter Physiology Reproduction River Animalss Behavior, Animals Floods Otters Reproduction Rivers Seasons Territoriality
spellingShingle	Adult Odor Otter Reproductive Success Season Territoriality Animals Behavior, Animals Flooding Otter Physiology Reproduction River Animalss Behavior, Animals Floods Otters Reproduction Rivers Seasons Territoriality Leuchtenberger, Caroline Territoriality of giant otter groups in an area with seasonal flooding
topic_facet	Adult Odor Otter Reproductive Success Season Territoriality Animals Behavior, Animals Flooding Otter Physiology Reproduction River Animalss Behavior, Animals Floods Otters Reproduction Rivers Seasons Territoriality
description	Territoriality carries costs and benefits, which are commonly affected by the spatial and temporal abundance and predictability of food, and by intruder pressure. Giant otters (Pteronura brasiliensis) live in groups that defend territories along river channels during the dry season using chemical signals, loud vocalizations and agonistic encounters. However, little is known about the territoriality of giant otters during the rainy season, when groups leave their dry season territories and follow fish dispersing into flooded areas. The objective of this study was to analyze long-term territoriality of giant otter groups in a seasonal environment. The linear extensions of the territories of 10 giant otter groups were determined based on locations of active dens, latrines and scent marks in each season. Some groups overlapped the limits of neighboring territories. The total territory extent of giant otters was correlated with group size in both seasons. The extent of exclusive territories of giant otter groups was negatively related to the number of adults present in adjacent groups. Territory fidelity ranged from 0 to 100%between seasons. Some groupsmaintained their territory for long periods, which demanded constant effort in marking and re-establishing their territories during the wet season. These results indicate that the defense capacity of groups had an important role in the maintenance of giant otter territories across seasons, which may also affect the reproductive success of alpha pairs. © 2015 Leuchtenberger et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
format	Artigo
author	Leuchtenberger, Caroline
author2	Magnusson, William Ernest Mourão, Guilherme
author2Str	Magnusson, William Ernest Mourão, Guilherme
title	Territoriality of giant otter groups in an area with seasonal flooding
title_short	Territoriality of giant otter groups in an area with seasonal flooding
title_full	Territoriality of giant otter groups in an area with seasonal flooding
title_fullStr	Territoriality of giant otter groups in an area with seasonal flooding
title_full_unstemmed	Territoriality of giant otter groups in an area with seasonal flooding
title_sort	territoriality of giant otter groups in an area with seasonal flooding
publisher	PLoS ONE
publishDate	2020
url	https://repositorio.inpa.gov.br/handle/1/14701
_version_	1787144098347483136
score	11.755432

Territoriality of giant otter groups in an area with seasonal flooding

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