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- W1992505711 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 326:235-244 (2006) - doi:10.3354/meps326235 Geographic variation in decoration selectivity of Micippa platipes and Tiarinia cornigera in Japan Kristin M. Hultgren1,*, Phan Due Thanh2, Michiko Sato3 1Department of Evolution and Ecology, University of California, Davis, One Shields Avenue, Davis, California 95616, USA 2Faculty of Biology and Agriculture, Hanoi University of Education, 136 Xuan Thuy Street, Cau Giay, Hanoi, Vietnam 3Seto Marine Biological Laboratory, Kyoto University, Shirahama-cho, Wakayama, 649-2211, Japan *Email: khultgren@ucdavis.edu ABSTRACT: Relatively few studies have compared behavioral variation of more than one species among different locations; yet examining geographic variation in behavior in a comparative context is crucial to help elucidate the generality of geographic patterns. We studied geographic variation in decoration preferences for 2 spider crabs (Brachyura: Majoidea), Micippa platipes and Tiarinia cornigera, which co-occur in intertidal areas along the coast of Japan. Both M. platipes and T. cornigera primarily feed on algae and use them for decoration (i.e. attach them to hooked setae on their carapace). We tested whether individuals from 3 locations along the east coast of Japan differed in their decoration and consumption selectivity for certain algae in the field, and also tested decoration and consumption preferences of M. platipes in laboratory assays. At the 2 more northern locations, both species showed little selectivity among algae, primarily using them for decoration in proportion to their abundance. Conversely, at the southern location, M. platipes exhibited strong preferences for the alga Hypnea pannosa in both field and laboratory assays, and both crab species strongly avoided the alga Corallina pilulifera. Using both an overall selectivity index (SEo) and a proportional selectivity index (PSE) calculated for each alga, we compared algal use by the crabs vs. algal availability at the 3 locations. Both indices indicated that both species were more selective (had stronger preferences or avoidances of available algae) at the southern location than at the 2 more northern locations. Potential factors driving this latitudinal gradient in selectivity include seasonal and geographic variability in both decoration availability and crab decoration preferences. KEY WORDS: Decorator crab · Geographic variation · Micippa platipes · Tiarinia cornigera · Proportional selectivity index · PSE · Overall selectivity index · SEo · Decoration selectivity Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 326. Online publication date: November 17, 2006 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2006 Inter-Research." @default.
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- W1992505711 title "Geographic variation in decoration selectivity of Micippa platipes and Tiarinia cornigera in Japan" @default.
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