Skip to main content

Energy density of anchovy Engraulis encrasicolus in the Bay of Biscay

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

The energy density (ED) of anchovy Engraulis encrasicolus in the Bay of Biscay was determined by direct calorimetry and its evolution with size, age and season was investigated. The water content and energy density varied seasonally following opposite trends. The ED g−1 of wet mass (MW) was highest at the end of the feeding season (autumn: c. 8 kJ g−1MW) and lowest in late winter (c. 6 kJ g−1MW). In winter, the fish lost mass, which was partially replaced by water, and the energy density decreased. These variations in water content and organic matter content may have implications on the buoyancy of the fish. The water content was the major driver of the energy density variations for a MW basis. A significant linear relationship was established between ED g−1 (y) and the per cent dry mass (MD; x): y =−4·937 + 0·411x. In the light of the current literature, this relationship seemed to be not only species specific but also ecosystem specific. Calibration and validation of fish bioenergetics models require energy content measurements on fish samples collected at sea. The present study provides a first reference for the energetics of E. encrasicolus in the Bay of Biscay.

Keywords: bioenergetics; reserves; seasonal cycle

Document Type: Regular Paper

DOI: https://doi.org/10.1111/j.1095-8649.2008.02143.x

Affiliations: IFREMER, Department Ecology and Models for Fisheries, rue de l’île d’Yeu, BP22105, 44311 cdx 3, Nantes, France

Publication date: 2009-02-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more