Abstract
The energy of the body components and the energy costs of spawning and overwintering in the bay anchovy Anchoa mitchilli, the most abundant fish in Chesapeake Bay, were studied to determine seasonal variability during the different stages of its life cycle. Bimonthly samples were collected by trawl from April 1990 through October 1991. Fish condition and body energy levels fluctuated seasonally, and were related to anchovy size. Energy equivalents (cal g-1 dry wt) was highest in December, before the overwintering period. The somatic weight component increased by 32 to 33% and total body weight by 26% during the spawning season, indicating that feeding not only met energy requirements of daily spawning but also provided surplus energy for growth. The overwintering loss of energy was 33 to 35% of total body calories, and was primarily derived from deposit fat in somatic and visceral tissues.
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Communicated by N. H. Marcus, Tallahassee
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Wang, S.B., Houde, E.D. Energy storage and dynamics in bay anchovy Anchoa mitchilli . Marine Biology 121, 219–227 (1994). https://doi.org/10.1007/BF00346729
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DOI: https://doi.org/10.1007/BF00346729