Individual prey choices of octopuses: are they generalist or specialist?

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dc.contributor.authorMather, Jennifer A.
dc.contributor.authorLeite, Tatiana S.
dc.contributor.authorBatista, Allan T.
dc.date.accessioned2019-08-29T22:25:53Z
dc.date.available2019-08-29T22:25:53Z
dc.date.issued2012
dc.descriptionSherpa Romeo green journal. Open access articleen_US
dc.description.abstractPrey choice is often evaluated at the species or population level. Here, we analyzed the diet of octopuses of different populations with the aim to assess the importance of individual feeding habits as a factor affecting prey choice. Two methods were used, an assessment of the extent to which an individual octopus made choices of species representative of those population (PSi and IS) and 25% cutoff values for number of choices and percentage intake of individual on their prey. In one population of Octopus cf vulgaris in Bermuda individuals were generalist by IS=0.77, but most chose many prey of the same species, and were specialists on it by >75% intake. Another population had a wider prey selection, still generalist with PSi=0.66, but two individuals specialized by choices. In Bonaire, there was a wide range of prey species chosen, and the population was specialists by IS= 0.42. Individual choices revealed seven specialists and four generalists. A population of Octopus cyanea in Hawaii all had similar choices of crustaceans, so the population was generalist by IS with 0.74. But by individual choices, three were considered a specialist. A population of Enteroctopus dofleini from Puget Sound had a wide range of preferences, in which seven were also specialists, IS=0.53. By individual choices, thirteen were also specialists. Given the octopus specialty of learning during foraging, we hypothesize that both localized prey availability and individual personality differences could influence the exploration for prey and this translates into different prey choices across individuals and populations showed in this studyen_US
dc.description.peer-reviewYesen_US
dc.identifier.citationMather, J. A., Leite, T. S., & Batista, A. T. (2012). Individual prey choices of octopuses: Are they generalist or specialist? Current Zoology, 58(4), 597-603.https://doi.org/10.1093/czoolo/58.4.597en_US
dc.identifier.urihttps://hdl.handle.net/10133/5535
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.publisher.departmentDepartment of Psychologyen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionUniversidade Federal do Rio Grande de Norteen_US
dc.publisher.urlhttps://doi.org/10.1093/czoolo/58.4.597en_US
dc.subjectOctopusesen_US
dc.subjectPrey choiceen_US
dc.subjectSpecialisten_US
dc.subjectGeneralisten_US
dc.subjectPrey preference
dc.subject.lcshOctopuses--Behavior
dc.subject.lcshPredation (Biology)
dc.titleIndividual prey choices of octopuses: are they generalist or specialist?en_US
dc.typeArticleen_US
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