Titre du document / Document title

Diet and feeding behavior of the deep-water sea star Rathbunaster californicus (Fisher) in the Monterey Submarine Canyon

Auteur(s) / Author(s)

LAUERMAN L. M. L. ^{(1 2 3 4 5)} ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Moss Landing Marine laboratory PO., Institute, MBARI, 7700 Sandholdt Road, PO. Box 628, Moss Landing California 95039-0628, ETATS-UNIS
⁽²⁾ Moss Landing Marine laboratory Box 450, Institute, MBARI, 7700 Sandholdt Road, PO. Box 628, Moss Landing California 95039-0628, ETATS-UNIS
⁽³⁾ Moss Landing Marine laboratory Moss Landing, Institute, MBARI, 7700 Sandholdt Road, PO. Box 628, Moss Landing California 95039-0628, ETATS-UNIS
⁽⁴⁾ MBARI, 7700 Sandholdt Road, PO. Box 628, Moss Landing California 95039-0628, ETATS-UNIS
⁽⁵⁾ Moss Landing Marine laboratory Monterey Bay Aquarium Research Institute, MBARI, 7700 Sandholdt Road, PO. Box 628, Moss Landing California 95039-0628, ETATS-UNIS

Résumé / Abstract

Diet was determined for 98 specimens of Rathbunaster californicus (Fisher), a deep-water sea star, collected with a Remotely Operated Vehicle (ROV) between 380 and 650 m depth within the Monterey Submarine Canyon, California. Gut content analysis revealed at least seven phyla among the prey items, with crustaceans (especially benthicdwelling caprellid amphipods) predominating. The presence of large decapod shrimps, hyperiid amphipods, other midwater crustaceans, siphonophore parts, and a tomopterid polychaete in stomach contents indicated that R. californicus can catch highly mobile, midwater animals swimming close to the substratum. Such active predation was seen directly via the ROV's video system, which showed R. californicus catching euphausids, sergestids, and a myctophid fish. In the laboratory, the sea stars engulfed dead food items such as squid and smelt and used their pedicellariae to catch mobile prey such as brine shrimp. These data show that R. californicus in Monterey Bay is an opportunistic predator and scavenger and is one of few sea stars reported to be capable of catching midwater prey.

Revue / Journal Title

Bulletin of marine science   ISSN 0007-4977   CODEN BMRSAW 

Source / Source

1998, vol. 63, n^o3, pp. 523-530 (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

Allen, Lawrence, KA, ETATS-UNIS  (1965) (Revue)

Mots-clés anglais / English Keywords

Diet ; Feeding behavior ; Content analysis ; Prey ; Gut ; Predator ; Deep water ; Submarine ; Canyon ; California ; North Pacific ; Pisces ; Invertebrata ; United States ; North America ; America ; Pacific Ocean ; Marine environment ; Feeding ; Vertebrata ; Asteroidea ; Echinodermata ;

Mots-clés français / French Keywords

Régime alimentaire ; Comportement alimentaire ; Analyse contenu ; Proie ; Intestin ; Prédateur ; Eau profonde ; Sous marin ; Canyon ; Californie ; Océan Pacifique Nord ; Pisces ; Invertebrata ; Rathbunaster californicus ; Etats Unis ; Amérique du Nord ; Amérique ; Océan Pacifique ; Milieu marin ; Alimentation ; Vertebrata ; Asteroidea ; Echinodermata ;

Mots-clés espagnols / Spanish Keywords

Régimen alimentario ; Conducta alimenticia ; Análisis contenido ; Presa ; Intestino ; Depredador ; Agua profunda ; Submarino ; Cañón ; California ; Océano Pacífico Norte ; Pisces ; Invertebrata ; Estados Unidos ; America del norte ; America ; Océano Pacífico ; Medio marino ; Alimentación ; Vertebrata ; Asteroidea ; Echinodermata ;

Localisation / Location

INIST-CNRS, Cote INIST : 11286, 35400007416069.0060