Physiological energetics of Buccinum undatumL. (Gastropoda) off Douglas, Isle of Man (the Irish Sea)

Authors : Ahmet E KIDEYŞ

Pages : 49-62

View : 22 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Physiological energetics of the common whelk insert ignore into journalissuearticles values( Buccinum undatum); were studied in a population off Douglas, Isle of Man and an energy budget was constructed for the period February 1989 to January 1990. The components of the energy budget insert ignore into journalissuearticles values(in kJ m -2 year -1 ); for the population can be summarized thus: consumption insert ignore into journalissuearticles values(C);=753; growth production insert ignore into journalissuearticles values(P g );=34; reproductive production insert ignore into journalissuearticles values(P r );=4; mucus production=218; respiration insert ignore into journalissuearticles values(R);=96; ammonia excretion insert ignore into journalissuearticles values(U);=8; and faecal production insert ignore into journalissuearticles values(F);=393. Assimilation efficiency was 47.7%. P/B insert ignore into journalissuearticles values(annual production/biomass); was calculated as 1.40 representing an intermediate life span for this species.
Keywords : Buccinum, Ecology, Energetics, Energy budget, production