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dc.contributor.authorQuetglas, A. (Antoni) es_ES
dc.contributor.authorGonzález-Aguilar, M. (María) es_ES
dc.contributor.authorCarbonell, A. (Ana) es_ES
dc.contributor.authorSánchez, P. (Pilar)es_ES
dc.description.abstractSeveral aspects of the biology of Bathypolypus sponsalis were studied from 297 individuals (115 males, 180 females and 2 indeterminates) caught in a depth range of 200–800 m depth in the western Mediterranean Sea. The paper presents data on sizes (length-weight relationships, size-frequency distributions) and reproduction (sex ratio, maturation, condition), and also analyses of the diet of B. sponsalis from samples taken throughout the year. Length-weight relationships showed that females are heavier than males at the same mantle length. Although mature individuals were found all year round, the maximum number occurred in spring and summer. Sexual maturation data revealed that males mature at smaller sizes than females. The gonadosomatic index increased with maturity in both sexes; the increase was gradual in males, but abrupt in females. The digestive gland index was used as a condition index and showed a differential behaviour with maturity; it increased gradually in females, but decreased in males. Like other octopus species, B. sponsalis appears to be an opportunistic predator, feeding on a great variety of preys. Stomach content analysis yielded a total of 19 different prey items belonging to four major groups (Crustacea, Mollusca, Ophiuroidea and Osteichthya). The first three groups were the more frequent preys, since crustaceans, molluscs and ophiuroids appeared in 76%, 49% and 30% of the stomachs, respectively. Decapoda Reptantia (among crustaceans) and cephalopods and bivalves (among molluscs) constituted the more abundant prey items. While the Decapoda Reptantia group was significantly more abundant in stomach contents of females, gastropods were taken more frequently by males. These differences in diet could reveal females as a more active predators than malesen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes_ES
dc.subjectBathypolypus sponsalisen_US
dc.subjectwestern Mediterraneanen_US
dc.titleBiology of the deep-sea octopus Bathypolypus sponsalis (Cephalopoda: Octopodidae) from the western Mediterranean Seaen_US
dc.typeresearch articlees_ES
dc.identifier.bibliographicCitationMarine Biology, 138(4). 2001: 785-792es_ES
dc.publisher.centreCentro Oceanográfico de Baleareses_ES
dc.rights.accessRightsclosed accesses_ES
dc.coverage.spatialStudyMediterranean Seaen_US
dc.coverage.spatialStudyWestern Mediterranean Seaen_US

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    Atribución-NoComercial-SinDerivadas 3.0 España
    Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España