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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Feeding habits of the false southern king crab Paralomis granulosa (Lithodidae) in the Beagle Channel, Tierra del Fuego, Argentina Comoglio, L.I.; Amin, O.A. (1999). Feeding habits of the false southern king crab Paralomis granulosa (Lithodidae) in the Beagle Channel, Tierra del Fuego, Argentina. Sci. Mar. (Barc.) 63(S1): 361-366. https://dx.doi.org/10.3989/scimar.1999.63s1361 In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, meer Ook verschenen in: Arntz, W.E.; Ríos, C. (Ed.) (1999). Magellan-Antarctic: Ecosystems that drifted apart. Scientia Marina (Barcelona), 63(Supl. 1). Institut de Ciències del Mar: Barcelona. 518 pp. https://dx.doi.org/10.3989/scimar.1999.63s1, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 372990 [ download pdf ]

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Trefwoorden

Lithodidae Samouelle, 1819 [WoRMS]; Paralomis granulosa (Hombron & Jacquinot, 1846) [WoRMS] Marien/Kust

Author keywords

Feeding habits, natural diet, crabs, Paralomis granulosa, stomach contents, Lithodidae

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Auteurs		Top
Comoglio, L.I. Amin, O.A.

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Abstract

Stomach contents of 282 false southern king crabs (Paralomis granulosa), between 10 to 90 mm CL from the Beagle Channel (Golondrina Bay and Roca Mora), Argentina, were examined by the frequency of occurrence method of analysis and by a food index. Roca Mora is an area where juveniles (< 50 mm CL) dominate and in Golondrina Bay adults (> 60 mm CL) are common; in this last area sexual segregation was also observed. The principal food groups for crabs of Golondrina Bay were algae, molluscs, crustaceans, bryozoans and foraminiferans; for crabs from Roca Mora the natural diet consisted of three major food groups: hydrozoans, echinoderms and foraminiferans. The relative frequency of different prey groups varied in relation to the size, season and sex. There were no significant differences in the quantity of food consumed by sexes in both areas. Generally small crabs (< 40 mm CL) contained more food than large crabs (> 50 mm CL). Juveniles consumed a greater amount of food during winter and spring. In summer (moulting period), juveniles had the highest vacuity index. Adults consumed minor amounts of food during autumn, before the spawning-moulting-mating period when the vacuity index was higher (spring).

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