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Gastric evacuation rate in mackerel (Scomber scombrus L.)

Mehl, Sigbjørn; Westgård, Trond
Working paper
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H331983.pdf (406.1Kb)
URI
http://hdl.handle.net/11250/100231
Date
1983
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  • ICES CM documents authored by IMR scientists (1949-2011) [3139]
Original version
This report is not to be quoted without prior consultation with the General Secretary.  
Abstract
About 1500 mackerel, 25-45 cm in Length, were kept in a net

for l0 days. In two experiments the fish were £ed frozen

euphausiids -ad. libiturn, and the wet weight of the stomach

content determined every second hour for 20-30 hours. The

l' stomachs were then almost empty. Independent of fish size,

the rate of digestion was related to the water temperature

(14.5 - 17.0~~: )f (T)= 0.005 Oexp (0.2-T). The niaximum

l

stomach capacity (wet weight, grams) was a function of fish l

size (total length, cm): w = 0.0087eL 2,21

i
Series
ICES CM documents
1983/H:33

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