By J.H.S. Blaxter (ed.), A.J. Southward (ed.)
Quantity 25 of this authoritative overview sequence keeps the excessive average set through the editors long ago. Marine biologists in all places have come to worth and luxuriate in the big variety of thought-provoking papers written via invited experts.In this quantity are experiences of 4 animal teams which span the full variety of the marine nutrients chain. The position of parasites in ecology is a transforming into curiosity and the parasites of zooplankton are defined intimately for the 1st time. elements of thegastropods, cephalopods and fish existence also are tested intimately.
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Extra info for Advances in Marine Biology, Vol. 25
Elliott and Persson (1978) argued that direct estimates of food consumption based on stomach contents require fewer assumptions than estimates from theoretical energy budgets. , 1986), but they are very useful to estimate effects of temperature, body size and activity on consumption rates (Olson and Boggs, 1986). Stomach contents methods are more direct, but also more labor-intensive, and they are subject to sampling problems which can result in infrequent numbers of point estimates of feeding rate.
The interpretation of asynchronous oscillations in predator and prey populations as evidence for predator-prey interactions has been criticized (Frank and Leggett, 1985; Leggett, 1986). Inverse correlations between numbers of predators and prey do not necessarily indicate causality, because physical mechanisms or temporal asynchrony in reproduction can segregate predators and prey. , 1985; Fancett and Jenkins, 1988; PREDATION AND THE RECRUITMENT PROBLEM 43 Monteleone and Duguay, 1988). For example, Bailey and Yen (1983) assumed that individuals of the copepod Euchaeta elongata with melanin in their guts had eaten hake larvae.
80 1 6 . 4 . 13. (A) Average abundance of yolk-sac herring larvae (number /loom3) and of Aurelia aurita (m1/100 m') from Kiel Fjord sampled at weekly intervals. (B) Drawings symbolize the relative abundances of Aurelia aurita, yolk-sac herring larvae and adult spawning herring during four years in Kiel Fjord (from Moller, 1984). pileus and A . aurita on plaice and flounder larvae in the Dutch Wadden Sea was investigated by Veer and Zijlstra (1982), Veer et al. (1983), and Veer (1985, 1986). It was concluded that for plaice larvae, predation by P .
Advances in Marine Biology, Vol. 25 by J.H.S. Blaxter (ed.), A.J. Southward (ed.)