Temperature dependency of early growth of turbot (Scophthalmus maximus L.) and its implications for developmental progress

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1999 English Publisher:Elsevier BVJournal:Journal of Experimental Marine Biology and Ecology, volume 242, pages 201-210 (issn: 0022-0981,

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Authors: Weltzien, F. A.; Planas, Miguel; Fyhn, H. J.;

doi: 10.1016/s0022-0981(99)00099-4

handle: 10261/57582

Temperature dependency of early growth of turbot (Scophthalmus maximus L.) and its implications for developmental progress

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Abstract

Growth in developing turbot larvae can be expressed independently of temperature when using effective day-degrees (Dº eff) as an index of development. The calculation of Dº eff is based on the principle of thermal summation whereby the rate of development is linearly related to the ambient temperature above a species-specific threshold temperature (T0) at which development is theoretically arrested. The T for turbot embryos is 5.3ºC. The increase in wet body mass of developing turbot larvae at 14, 18, and 22ºC can be aligned into a single exponential relationship regardless of incubation temperature when using Dº eff as the index of development. Previous attempts to relate physiological processes in poikilothermic animals, including fish, to incubation temperature are discussed.

The study was financially supported by the Comisión Interministerial de Ciencia y Tecnología (CICYT, Spain) (Project AGF92-0185).

10 páginas, 3 figuras

Peer reviewed

Related Organizations

Spanish National Research Council
Spain
University of Bergen
Norway
Instituto de Investigaciones Marinas
Spain

Keywords

Effective day-degrees, Development, Temperature effects, Poikilotherms, Turbot (Scophthalmus maximus L.)

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