Shell-size selection by intertidal sympatric hermit crabs

dc.creatorTurra, A
dc.creatorLeite, FPP
dc.date2004
dc.dateAUG
dc.date2014-11-15T13:26:20Z
dc.date2015-11-26T17:20:07Z
dc.date2014-11-15T13:26:20Z
dc.date2015-11-26T17:20:07Z
dc.date.accessioned2018-03-29T00:07:45Z
dc.date.available2018-03-29T00:07:45Z
dc.identifierMarine Biology. Springer, v. 145, n. 2, n. 251, n. 257, 2004.
dc.identifier0025-3162
dc.identifierWOS:000223098200005
dc.identifier10.1007/s00227-004-1323-9
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75505
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75505
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75505
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1283058
dc.descriptionThis study evaluated selection for shell size by three species of tropical intertidal hermit crabs, Clibanarius antillensis,C. sclopetarius, and C. vittatus, from species of shells which are frequently used in nature. Crab size and weight were strongly and significantly related to all measured parameters of the selected shells. The strength of these relationships (r(2) values) depended neither on the crab nor on the shell variables taken into account. The relationships between crab size and the dimensions of the selected shells showed higher r(2) values than the corresponding relationships with the shells that the crabs had occupied when they were collected (0.482-0.903 in comparison to 0.091-0.652, respectively), indicating that the crabs were occupying sub-optimal shells in nature. Negative allometry was frequently found in the relationships between crab and shell variables, indicating that large crabs select and use proportionally lighter shells than do small crabs. This negative allometry was stronger for the shells used in nature (except for C. antillensis), i.e. larger crabs tended to select heavier shells in the laboratory than in nature. Different allometric relationships were also recorded among the dimensions of shells used in nature and those selected by the hermit crabs in free-access experiments: as shell length increased, the selected shells were heavier and had larger apertures than the shells used in nature. The relationships between crab size and the length and weight of the selected shells did not depend on the species of crab or species of shell, but only on crab size. Therefore, analyses using these variables can be performed without taking the species of crab or shell into account, i.e. data from different crab or shell species can be pooled. The influence of crab and/or shell species was recorded only in the models fitted for aperture length and width, variables which were more related to shell architecture than did shell length or weight. In contrast, if crab weight is used as an independent variable, different crab or shell species can be analyzed together independently of the particular shell parameter. This indicates that crab weight may be less susceptible than crab shield length to shell morphological constraints. Finally, the results indicate that the preferred size of a given shell type chosen by a given hermit crab will depend more on crab size or weight, than on the crab or shell species under consideration, i.e. crab shell-size relationships are not species specific.
dc.description145
dc.description2
dc.description251
dc.description257
dc.languageen
dc.publisherSpringer
dc.publisherNew York
dc.publisherEUA
dc.relationMarine Biology
dc.relationMar. Biol.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectPagurus-longicarpus Say
dc.subjectUtilization Patterns
dc.subjectGastropod Shells
dc.subjectChoice Behavior
dc.subjectGrowth-rate
dc.subjectExperience
dc.subjectPreference
dc.subjectAvailability
dc.subjectCompetition
dc.subjectDecapoda
dc.titleShell-size selection by intertidal sympatric hermit crabs
dc.typeArtículos de revistas


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