{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T10:18:05Z","timestamp":1762251485310},"reference-count":21,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2009,5,11]],"date-time":"2009-05-11T00:00:00Z","timestamp":1242000000000},"content-version":"unspecified","delay-in-days":4482,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Mar. Biol. Ass."],"published-print":{"date-parts":[[1997,2]]},"abstract":"<jats:p>Columbus crabs, <jats:italic>Planes minutus<\/jats:italic> (Crustacea: Brachyura) live in the open ocean attached to floating substrata including <jats:italic>Sargassum<\/jats:italic>, flotsam, and sea turtles. Eighty-two percent of 128 loggerhead turtles (<jats:italic>Caretta caretta<\/jats:italic>) checked, harboured a total of 172 crabs. Crabs inhabiting flotsam occurred in mixed sex groups of adults and juveniles, with a mean group size of 8.2 \u00b1;11.8 (N=17). In contrast, crabs living on sea turtles around Madeira occur in smaller groups 1.6 \u00b10.5 (N=105) which are typically adult heterosexual pairs (61 out of 105). Crabs on turtles were bigger than on flotsam and a higher proportion of female crabs were brooding eggs. Columbus crabs exhibit different life history strategies depending on the substratum they inhabit.<\/jats:p>","DOI":"10.1017\/s0025315400033865","type":"journal-article","created":{"date-parts":[[2009,5,12]],"date-time":"2009-05-12T15:20:07Z","timestamp":1242141607000},"page":"185-194","source":"Crossref","is-referenced-by-count":34,"title":["Comparisons of Social Structure of Columbus Crabs Living on Loggerhead Sea Turtles and Inanimate Flotsam"],"prefix":"10.1017","volume":"77","author":[{"given":"Thomas","family":"Dellinger","sequence":"first","affiliation":[]},{"given":"John","family":"Davenport","sequence":"additional","affiliation":[]},{"given":"Peter","family":"Wirtz","sequence":"additional","affiliation":[]}],"member":"56","published-online":{"date-parts":[[2009,5,11]]},"reference":[{"key":"S0025315400033865_ref021","volume-title":"SYSTAT: the system for statistics","author":"Wilkinson","year":"1990"},{"key":"S0025315400033865_ref020","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439-0310.1981.tb01924.x"},{"key":"S0025315400033865_ref017","first-page":"166","article-title":"The biological significance of the pair-bond in the shrimp Hymenocera picta","volume":"50","author":"Seibt","year":"1979","journal-title":"Zeitschrift f\u00fcr Tierpsychologie"},{"key":"S0025315400033865_ref016","doi-asserted-by":"publisher","DOI":"10.5962\/bhl.title.8729"},{"key":"S0025315400033865_ref013","doi-asserted-by":"publisher","DOI":"10.1016\/0003-3472(77)90017-3"},{"key":"S0025315400033865_ref012","first-page":"1","article-title":"\u00dcber den Bewuchs auf den treibenden Tangen der Sargassosee","volume":"38","author":"Hentschel","year":"1922","journal-title":"Mitteilungen aus dem Zoologischen Staatsinstitut und Zoologischen Museum in Hamburg"},{"key":"S0025315400033865_ref010","first-page":"37","article-title":"The Sargassum Community. 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