1972
DOI: 10.1139/f72-277
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Size Selection of Daphnia pulicaria by Yellow Perch (Perca flavescens) Fry in West Blue Lake, Manitoba

Abstract: Prior to mid-July, Daphnia pulicaria in yellow perch (Perca flavescens) fry stomachs were smaller than those in plankton collections but after this date mean lengths of D. pulicaria in stomachs and collections were similar indicating an initial selection for small D. pulicaria by the fish. The relation between D. pulicaria body depth and perch mouth gape width indicated that perch fry less than 18 mm long, a length attained in mid-July, could not readily ingest D. pulicaria with body depths greater than 0.7 mm… Show more

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Cited by 64 publications
(31 citation statements)
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“…In both habitats, zooplankton were an important part of the diet of small fish, but in the littoral zone larger smelt consumed chironomid larvae, smelt eggs, and juvenile bullies. Growth in length and weight is generally accompanied by increased mouth dimensions, allowing larger prey items to be ingested (Wong & Ward 1972;Wankowski 1979). Our results were similar.…”
Section: Smelt Size and Food Sizesupporting
confidence: 81%
“…In both habitats, zooplankton were an important part of the diet of small fish, but in the littoral zone larger smelt consumed chironomid larvae, smelt eggs, and juvenile bullies. Growth in length and weight is generally accompanied by increased mouth dimensions, allowing larger prey items to be ingested (Wong & Ward 1972;Wankowski 1979). Our results were similar.…”
Section: Smelt Size and Food Sizesupporting
confidence: 81%
“…During growth, they feed progressively upon larger prey. This maximum size selection imposed by the fish's gape is well documented for young yellow perch (Perca flavescens, see Fig.3) by Wong & Ward (1972), for juvenile chum' salmon (Oncorhynchus keta) by Feller & Kaczynski (1975), for perch fry (Perca j7uviatilis) by Furnass (1979), and for herring larvae (Ciupea harengus L.) by Blaxter (1966) and Rosenthal & Hempel (1970).…”
Section: Prey Capturementioning
confidence: 67%
“…flavescens (Galbraith, 1967;Wong & Ward, 1972;Rasmussen, 1973); l Cichlidae: Congo tilapia, Tilapia rendalli (Caulton, 1976); blue tilapia, 7: aurea (Spataru & Zorn, 1978;Gophen et al, 1983aGophen et al, , 1983bDrenner et al, 1984b); 7Y esculenta (Greenwood, 1953); T nilotica (Moriarty, 1973;Moriarty & Moriarty, 1973); Sarotherodon galilaeus (Lauzanne & Iltis, 1975;Spataru, 1976;Spataru & Zorn, 1976;Lauzanne, 1977;Gophen, 1980;Drenner et al, 1982c;Gophen et al, 1983aGophen et al, , 1983b; Haplochromis nigripinnis (Moriarty & Moriarty, 1973); l Carangidae: jack mackerel, Trachurus symmetricus (Carliste, 1971;Arthur, 1976); l Scombridae: Pneumatophorus spp. (Godsil, 1954); Indian mackeral, Rastrelliger kanagurta (Bhimachar et al, 1960;Jones & Rosa, 1965;Colin, 1976;Nelson, 1979); Pacific mackeral, Scomber japonicus (O'Connell & Zweifel, 1972); wavyback skipjack, Euthynnus affinis (Walters, 1966).…”
Section: Contentsmentioning
confidence: 99%
“…0 + perch, Perca flavescens, regulated the abundance of Daphniapulex in Oneida Lake (Mills & Forney 1983) and the mean size of Daphnia in Frisian lakes was related to abundance of 0 + perch (van Densen & Vijverberg 1982). Feeding habits of fish larvae may be different from those of adult planktivores as they may prefer smaller species and smaller individuals of a species (Wong & Ward 1972, Guma'a 1978.…”
Section: Introductionmentioning
confidence: 99%