Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 372166
Title Variation of the physiological energetics of the bivalve Spisula subtruncata (da Costa, 1778) within an annual cycle
Author(s) Rueda, J.L.; Smaal, A.C.
Source Journal of Experimental Marine Biology and Ecology 301 (2004)2. - ISSN 0022-0981 - p. 141 - 157.
Department(s) RIVO Centrum voor Schelpdierenonderzoek
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) cerastoderma-edule bivalvia - suspension-feeding bivalves - mytilus-edulis - seasonal-variation - seston quantity - growth - mussel - reproduction - quality - spain
Abstract Spisula subtruncata is an infaunal filter-feeding bivalve, which lives in shallow sandy bottoms (2¿20 m depth) from Norway to the Atlantic coasts of Morocco, including the Mediterranean Sea. Considering that fisheries of this species have become an important economic resource in some European countries (e.g. The Netherlands), it is of great interest to know the seasonal variation in its physiological energetics. For this purpose, individuals of S. subtruncata were collected and maintained under ambient temperature and seawater conditions of Dutch coastal waters. Physiological processes related to the acquisition and utilisation of energy (e.g. clearance rate [CR], absorption and oxygen uptake) were measured under ambient conditions of the period March 1999 to February 2000. Mean annual clearance and respiration rates (RR) were 0.99 l h¿1 and 0.23 ml O2 h¿1 for a standard individual of 250 mg. Values for both clearance and respiration rate were high during spring and summer and low during autumn and winter. Stepwise multiple regression analyses indicated a significant relationship of the clearance rate with temperature and particulate organic matter (POM), whereas respiration rate was significantly related to temperature, absorption rate (AR) of the animals and their reproductive condition. Absorption efficiency (AE) of the food was significantly related to food quality. Scope for growth (SFG) of S. subtruncata, as well as flesh weight of the animals, was high in summer and low in winter.
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