Latitudinal variation in diet and patterns of human interaction in the marine otter

J. C. Mangel, T. Whitty, G. Medina-Vogel, J. Alfaro-Shigueto, C. Cáceres, B. J. Godley

Resultado de la investigación: Article

10 Citas (Scopus)

Resumen

The marine otter (Lontra felina) inhabits patches of rocky coastline from central Peru to southern Chile and is classified as Endangered by the IUCN. Given the limited information available about the species, we set out to assess marine otter diet with a view to detecting latitudinal differences, and to assess marine otter activity budgets and interspecific interactions (including anthropogenic) at Peruvian fishing villages and to compare results with similar Chilean studies. Nine study sites from central Chile to southern Peru were sampled for otter spraints to assess relative frequency of prey types and two fishing ports in southern Peru were monitored through focal and scan observations to assess activity patterns, interspecific interactions, habitat use patterns, and dive durations. Results indicate that toward the northern part of its range, crustaceans become less important and fish more important in the diet. Interactions were observed between marine otters and other species, including stray dogs and cats. The strong dependence of marine otters on the availability of safe rocky shelters, and the species' apparent tolerance to living alongside humans raise conservation concerns about vulnerability to anthropogenic threats. These factors, if not correctly managed, could turn some of these rocky seashore patches into population sinks.

Idioma originalEnglish
PublicaciónMarine Mammal Science
Volumen27
N.º2
DOI
EstadoPublished - abr 2011

Huella dactilar

interspecific interaction
activity pattern
diet
fishing
Peru
habitat use
shelter
crustacean
Chile
vulnerability
village
tolerance
coast
fish
Lontra felina
villages
Crustacea
cats
coasts
duration

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics

Citar esto

Mangel, J. C. ; Whitty, T. ; Medina-Vogel, G. ; Alfaro-Shigueto, J. ; Cáceres, C. ; Godley, B. J. / Latitudinal variation in diet and patterns of human interaction in the marine otter. En: Marine Mammal Science. 2011 ; Vol. 27, N.º 2.
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title = "Latitudinal variation in diet and patterns of human interaction in the marine otter",
abstract = "The marine otter (Lontra felina) inhabits patches of rocky coastline from central Peru to southern Chile and is classified as Endangered by the IUCN. Given the limited information available about the species, we set out to assess marine otter diet with a view to detecting latitudinal differences, and to assess marine otter activity budgets and interspecific interactions (including anthropogenic) at Peruvian fishing villages and to compare results with similar Chilean studies. Nine study sites from central Chile to southern Peru were sampled for otter spraints to assess relative frequency of prey types and two fishing ports in southern Peru were monitored through focal and scan observations to assess activity patterns, interspecific interactions, habitat use patterns, and dive durations. Results indicate that toward the northern part of its range, crustaceans become less important and fish more important in the diet. Interactions were observed between marine otters and other species, including stray dogs and cats. The strong dependence of marine otters on the availability of safe rocky shelters, and the species' apparent tolerance to living alongside humans raise conservation concerns about vulnerability to anthropogenic threats. These factors, if not correctly managed, could turn some of these rocky seashore patches into population sinks.",
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Latitudinal variation in diet and patterns of human interaction in the marine otter. / Mangel, J. C.; Whitty, T.; Medina-Vogel, G.; Alfaro-Shigueto, J.; Cáceres, C.; Godley, B. J.

En: Marine Mammal Science, Vol. 27, N.º 2, 04.2011.

Resultado de la investigación: Article

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T1 - Latitudinal variation in diet and patterns of human interaction in the marine otter

AU - Mangel, J. C.

AU - Whitty, T.

AU - Medina-Vogel, G.

AU - Alfaro-Shigueto, J.

AU - Cáceres, C.

AU - Godley, B. J.

PY - 2011/4

Y1 - 2011/4

N2 - The marine otter (Lontra felina) inhabits patches of rocky coastline from central Peru to southern Chile and is classified as Endangered by the IUCN. Given the limited information available about the species, we set out to assess marine otter diet with a view to detecting latitudinal differences, and to assess marine otter activity budgets and interspecific interactions (including anthropogenic) at Peruvian fishing villages and to compare results with similar Chilean studies. Nine study sites from central Chile to southern Peru were sampled for otter spraints to assess relative frequency of prey types and two fishing ports in southern Peru were monitored through focal and scan observations to assess activity patterns, interspecific interactions, habitat use patterns, and dive durations. Results indicate that toward the northern part of its range, crustaceans become less important and fish more important in the diet. Interactions were observed between marine otters and other species, including stray dogs and cats. The strong dependence of marine otters on the availability of safe rocky shelters, and the species' apparent tolerance to living alongside humans raise conservation concerns about vulnerability to anthropogenic threats. These factors, if not correctly managed, could turn some of these rocky seashore patches into population sinks.

AB - The marine otter (Lontra felina) inhabits patches of rocky coastline from central Peru to southern Chile and is classified as Endangered by the IUCN. Given the limited information available about the species, we set out to assess marine otter diet with a view to detecting latitudinal differences, and to assess marine otter activity budgets and interspecific interactions (including anthropogenic) at Peruvian fishing villages and to compare results with similar Chilean studies. Nine study sites from central Chile to southern Peru were sampled for otter spraints to assess relative frequency of prey types and two fishing ports in southern Peru were monitored through focal and scan observations to assess activity patterns, interspecific interactions, habitat use patterns, and dive durations. Results indicate that toward the northern part of its range, crustaceans become less important and fish more important in the diet. Interactions were observed between marine otters and other species, including stray dogs and cats. The strong dependence of marine otters on the availability of safe rocky shelters, and the species' apparent tolerance to living alongside humans raise conservation concerns about vulnerability to anthropogenic threats. These factors, if not correctly managed, could turn some of these rocky seashore patches into population sinks.

KW - Chile

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