Extended hatching periods in the subantarctic lithodid crabs<Emphasis Type="Italic"> Lithodes santolla</Emphasis> and<Emphasis Type="Italic"> Paralomis granulosa</Emphasis> (Crustacea: Decapoda: Lithodidae)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Extended hatching periods in the subantarctic lithodid crabs Lithodes santolla and Paralomis granulosa (Crustacea: Decapoda: Lithodidae)

Authors:	S.?Thatje author-information" > author-information__contact u-icon-before" > mailto:sthatje@awi-bremerhaven.de" title=" sthatje@awi-bremerhaven.de" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,J.?A.?Calcagno,G.?A.?Lovrich,F.?J.?Sartoris,K.?Anger

Affiliation:	(1) Alfred Wegener Institute for Polar and Marine Research, PO Box 120 161, 27515 Bremerhaven, Germany;(2) Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Guiraldes 2160, Cdad Universitaria C1428EHA, Buenos Aires, Argentina;(3) Consejo Nacional de Investigaciones Científicas y Técnica, Centro Austral de Investigaciones Científicas, CADIC, CC 92, V9410BFD Ushuaia, Tierra del Fuego, Argentina;(4) Biologische Anstalt Helgoland, Alfred Wegener Institute for Polar and Marine Research, Helgoland, Germany

Abstract:	Temporal pattern of hatching was studied in the subantarctic lithodid crabs Lithodes santolla (Molina) and Paralomis granulosa (Jaquinot) from the Argentine Beagle Channel. In both species, larval hatching occurred in low daily numbers over an extended period of up to several weeks, depending on hatch size. Low daily hatching activity and low oxygen-consumption rates in freshly hatched P. granulosa larvae are discussed as life history adaptations to, and/or physiological constraints by, the environmental conditions of high latitudes. Communicated by H.-D. Franke

Keywords:	Stone crabs Hatching mode Behaviour Energy investment Reproduction
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