By Frederick S. Russell (ed.), Maurice Yonge (ed.)
Quantity 25 of this authoritative assessment sequence maintains the excessive commonplace set via the editors some time past. Marine biologists in every single place have come to price and luxuriate in the big variety of thought-provoking papers written through invited experts.In this quantity are studies of 4 animal teams which span the full diversity of the marine nutrients chain. The function of parasites in ecology is a becoming curiosity and the parasites of zooplankton are defined intimately for the 1st time. elements of thegastropods, cephalopods and fish lifestyles also are tested intimately.
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3). Along with Calanus jnmarchicus (including C . helgolandicus, no doubt), Pseudocalanus (with a small admixture of Paracalanus) is found in virtually all the sampled areas. It is also numerically the most abundant form per sample. It ispossible, in our opinion, that Pseudocalanus is the most abundant metazoan in the world. 2. g. Thompson, 1976). 5 I 5OloO 5 5 Pam-Reudacalanus rpp. Acartla a m . Cantrapagas hamatus Euchaob habas Houromamma rabusta Pareuchadta narvefica Rhincalanus nasutus Plauramamma banalis Ploummamma adominah8 Phuramamma gmcilis Labidocero wllastoni Sapphirina app.
V. RESPIRATION Respiration of Pseudocalanus has been quite extensively documented, generally as one of a number of forms in comparative studies. The ultimate aim of such studies has generally been to supply one component of the “ balance equation ” of growth or production (see p. 181). Respiration is measured as oxygen consumption. Little appears to have been done using more biochemical approaches to metabolic rate, although Muhammad (1965) has demonstrated a strong correlation between oxygen consumption and succinic dehydrogenase activity in a variety of mixed zooplankton, including Pseudocalanus.
The long flexible setae on the exite help maintain the feeding current (see p. 54) and the teeth on the endite (or gnathobase) are used to comb food from the setae and setules of the second maxilla before the food is passed to the mouth. (f) Second maxilla The second maxilla (Fig. 7F) is the appendage used to filter food from the feeding current. This phyllopodinm type of appendage has a number of endites with well developed setae on which are situated setules. The arrangement of setae and setules and their use in filter feeding is considered later (p.
Advances in Marine Biology, Vol. 15 by Frederick S. Russell (ed.), Maurice Yonge (ed.)