Feeding ecology of the marine otter (Lutra felina) in a rocky seashore of the south of Chile

Gonzalo Medina-Vogel, Claudio Delgado Rodríguez, Ricardo E. Alvarez P., José Luis Bartheld V.

Resultado de la investigación: Article

29 Citas (Scopus)

Resumen

The marine otter (Lutra felina) lives exclusively along exposed rocky shorelines on the South American Pacific coast from Peru (6°S), to Cape Horn, Chile (56°S), and Isla de los Estados, Argentina. L. felina diet and its relationship to prey availability and energy content was assessed by spraint and prey remains analysis, direct observation, and the use of crab pots and fish traps, at four sites on the Valdivian coast in the south of Chile, between June 1999 and June 2000. Based on spraints analysis, the diet was composed of 25 species; 52% (13/25) of the species identified were crustaceans, 40% (10/25) were fish, and 8% (2/25) were mollusks. Crustaceans were found in 78% of 475 spraints, 100% of 929 prey remains, and 90.8% of prey determined by direct observation, fish in 20% of spraints and 9.0% of prey determined by direct observation, and mollusks in 2% of spraints and 0.2% of prey determined by direct observation. Observed seasonal variation in prey availability was reflected in the otter diet. Fourteen prey species were trapped; 43% (6/14) were crustaceans and 57% (8/14) fish, crustaceans were 93% of 566 trapped individuals, fish 7%. L. felina showed opportunistic feeding behavior, selecting prey seasonally according to their availability rather than to their energy input.

Idioma originalEnglish
Páginas (desde-hasta)134-144
Número de páginas11
PublicaciónMarine Mammal Science
Volumen20
N.º1
DOI
EstadoPublished - 1 ene 2004

Huella dactilar

Lutra
feeding ecology
Chile
crustacean
ecology
Crustacea
fish
prey availability
diet
molluscs
coasts
coast
feeding behavior
energy content
Peru
energy
crab
shoreline
crabs
Argentina

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Citar esto

Medina-Vogel, Gonzalo ; Delgado Rodríguez, Claudio ; Alvarez P., Ricardo E. ; Bartheld V., José Luis. / Feeding ecology of the marine otter (Lutra felina) in a rocky seashore of the south of Chile. En: Marine Mammal Science. 2004 ; Vol. 20, N.º 1. pp. 134-144.
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abstract = "The marine otter (Lutra felina) lives exclusively along exposed rocky shorelines on the South American Pacific coast from Peru (6°S), to Cape Horn, Chile (56°S), and Isla de los Estados, Argentina. L. felina diet and its relationship to prey availability and energy content was assessed by spraint and prey remains analysis, direct observation, and the use of crab pots and fish traps, at four sites on the Valdivian coast in the south of Chile, between June 1999 and June 2000. Based on spraints analysis, the diet was composed of 25 species; 52{\%} (13/25) of the species identified were crustaceans, 40{\%} (10/25) were fish, and 8{\%} (2/25) were mollusks. Crustaceans were found in 78{\%} of 475 spraints, 100{\%} of 929 prey remains, and 90.8{\%} of prey determined by direct observation, fish in 20{\%} of spraints and 9.0{\%} of prey determined by direct observation, and mollusks in 2{\%} of spraints and 0.2{\%} of prey determined by direct observation. Observed seasonal variation in prey availability was reflected in the otter diet. Fourteen prey species were trapped; 43{\%} (6/14) were crustaceans and 57{\%} (8/14) fish, crustaceans were 93{\%} of 566 trapped individuals, fish 7{\%}. L. felina showed opportunistic feeding behavior, selecting prey seasonally according to their availability rather than to their energy input.",
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Feeding ecology of the marine otter (Lutra felina) in a rocky seashore of the south of Chile. / Medina-Vogel, Gonzalo; Delgado Rodríguez, Claudio; Alvarez P., Ricardo E.; Bartheld V., José Luis.

En: Marine Mammal Science, Vol. 20, N.º 1, 01.01.2004, p. 134-144.

Resultado de la investigación: Article

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T1 - Feeding ecology of the marine otter (Lutra felina) in a rocky seashore of the south of Chile

AU - Medina-Vogel, Gonzalo

AU - Delgado Rodríguez, Claudio

AU - Alvarez P., Ricardo E.

AU - Bartheld V., José Luis

PY - 2004/1/1

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N2 - The marine otter (Lutra felina) lives exclusively along exposed rocky shorelines on the South American Pacific coast from Peru (6°S), to Cape Horn, Chile (56°S), and Isla de los Estados, Argentina. L. felina diet and its relationship to prey availability and energy content was assessed by spraint and prey remains analysis, direct observation, and the use of crab pots and fish traps, at four sites on the Valdivian coast in the south of Chile, between June 1999 and June 2000. Based on spraints analysis, the diet was composed of 25 species; 52% (13/25) of the species identified were crustaceans, 40% (10/25) were fish, and 8% (2/25) were mollusks. Crustaceans were found in 78% of 475 spraints, 100% of 929 prey remains, and 90.8% of prey determined by direct observation, fish in 20% of spraints and 9.0% of prey determined by direct observation, and mollusks in 2% of spraints and 0.2% of prey determined by direct observation. Observed seasonal variation in prey availability was reflected in the otter diet. Fourteen prey species were trapped; 43% (6/14) were crustaceans and 57% (8/14) fish, crustaceans were 93% of 566 trapped individuals, fish 7%. L. felina showed opportunistic feeding behavior, selecting prey seasonally according to their availability rather than to their energy input.

AB - The marine otter (Lutra felina) lives exclusively along exposed rocky shorelines on the South American Pacific coast from Peru (6°S), to Cape Horn, Chile (56°S), and Isla de los Estados, Argentina. L. felina diet and its relationship to prey availability and energy content was assessed by spraint and prey remains analysis, direct observation, and the use of crab pots and fish traps, at four sites on the Valdivian coast in the south of Chile, between June 1999 and June 2000. Based on spraints analysis, the diet was composed of 25 species; 52% (13/25) of the species identified were crustaceans, 40% (10/25) were fish, and 8% (2/25) were mollusks. Crustaceans were found in 78% of 475 spraints, 100% of 929 prey remains, and 90.8% of prey determined by direct observation, fish in 20% of spraints and 9.0% of prey determined by direct observation, and mollusks in 2% of spraints and 0.2% of prey determined by direct observation. Observed seasonal variation in prey availability was reflected in the otter diet. Fourteen prey species were trapped; 43% (6/14) were crustaceans and 57% (8/14) fish, crustaceans were 93% of 566 trapped individuals, fish 7%. L. felina showed opportunistic feeding behavior, selecting prey seasonally according to their availability rather than to their energy input.

KW - Feeding ecology

KW - Lutra felina

KW - Marine otter

KW - Opportunistic predator

KW - Seasonal variations

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M3 - Article

AN - SCOPUS:0346009220

VL - 20

SP - 134

EP - 144

JO - Marine Mammal Science

JF - Marine Mammal Science

SN - 0824-0469

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