Affiliation:
1. Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039, USA
Abstract
Vampire squid (Vampyroteuthis infernalis) are considered phylogenetic relics with cephalopod features of both octopods and squids. They lack feeding tentacles, but in addition to their eight arms, they have two retractile filaments, the exact functions of which have puzzled scientists for years. We present the results of investigations on the feeding ecology and behaviour ofVampyroteuthis, which include extensivein situ, deep-sea video recordings from MBARI's remotely operated vehicles (ROVs), laboratory feeding experiments, diet studies and morphological examinations of the retractile filaments, the arm suckers and cirri. Vampire squid were found to feed on detrital matter of various sizes, from small particles to larger marine aggregates. Ingested items included the remains of gelatinous zooplankton, discarded larvacean houses, crustacean remains, diatoms and faecal pellets. Both ROV observations and laboratory experiments led to the conclusion that vampire squid use their retractile filaments for the capture of food, supporting the hypothesis that the filaments are homologous to cephalopod arms.Vampyroteuthis' feeding behaviour is unlike any other cephalopod, and reveals a unique adaptation that allows these animals to spend most of their life at depths where oxygen concentrations are very low, but where predators are few and typical cephalopod food is scarce.
Subject
General Agricultural and Biological Sciences,General Environmental Science,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine
Reference48 articles.
1. Role as consumers
2. Aspects of the functional morphology of cirrate octopods: locomotion and feeding;Vecchione M.;Vie et Milieu,1997
3. Hunt J. C.. 1996 The behavior and ecology of midwater cephalopods from Monterey Bay: submersible and laboratory observations. PhD thesis University of California Los Angeles USA.
4. The functional morphology of the musculature of squid (Loliginidae) arms and tentacles
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