Estrategias de forrajeo de Robsonella fontaniana (d'Orbigny, 1834) (Cephalopoda: Octopodidae)

Christian M. Ibáñez, Roger D. Sepúlveda, Evelin Sanhueza, J. Francisco Ruiz, Javier Chong

Resultado de la investigación: Article

7 Citas (Scopus)

Resumen

In this study we analyzed the natural diet and the dietary preferences of the octopus Robsonella fontaniana (d'Orbigny, 1834). Twenty-seven individuals were collected at San Vicente Bay, Chile, to study their stomach contents, and other 12 individuals were used in laboratory experiments for dietary selection tests. In the stomach contents 11 prey types were found, from which brachyuran crabs were the most frequent item. For preference tests, the animals were acclimated to constant temperature, air and water. Two experiments were performed: i) selection test on two gastropod species and three crustacean species, resulting in consume of crustaceans only (66.7% crustaceans and 0% gastropods), and ii) selection test on five crustaceans species, showing high preference for those highly motile (i.e. E. analoga was consumed 75% of the times offered). The scaling relationship between octopuses and preys showed a positive relationship between the size of octopuses and the fed preys. From field and experimental evidence we suggest that R. fontaniana has a selective hunting behavior and specialized diet with a narrow trophic niche breadth.

Idioma originalSpanish
Páginas (desde-hasta)277-283
Número de páginas7
PublicaciónRevista de Biologia Marina y Oceanografia
Volumen44
N.º2
EstadoPublished - 22 sep 2009

Huella dactilar

feeding methods
Octopodidae
Cephalopoda
crustacean
Crustacea
stomach content
gastropod
Gastropoda
stomach
diet
niche breadth
animal tests
testing
hunting
Chile
crab
crabs
air temperature
niches
water temperature

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

Citar esto

Ibáñez, Christian M. ; Sepúlveda, Roger D. ; Sanhueza, Evelin ; Ruiz, J. Francisco ; Chong, Javier. / Estrategias de forrajeo de Robsonella fontaniana (d'Orbigny, 1834) (Cephalopoda : Octopodidae). En: Revista de Biologia Marina y Oceanografia. 2009 ; Vol. 44, N.º 2. pp. 277-283.
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Estrategias de forrajeo de Robsonella fontaniana (d'Orbigny, 1834) (Cephalopoda : Octopodidae). / Ibáñez, Christian M.; Sepúlveda, Roger D.; Sanhueza, Evelin; Ruiz, J. Francisco; Chong, Javier.

En: Revista de Biologia Marina y Oceanografia, Vol. 44, N.º 2, 22.09.2009, p. 277-283.

Resultado de la investigación: Article

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