In the Amazon floodplain, a very high proportion of the production by prey species is consumed by
piscivorous fish (Bayley 1982).
In the absence of predatory fishes, however, other environmental factors (e.g.,
piscivorous birds; Reimchen 1983, 1988, 1993) might still select for robust pelvic structure, but their net effect would be weak compared with that in lakes with fish predation.
Bite force mean values previously reported for 10 insectivorous bat species, two facultatively
piscivorous Myotis and the
piscivorous N.
All other categories,
piscivorous (PIS), planktivorous (PLK) and sessile invertebrate predators (SIP) had lower densities and biomass, compared with other categories.
The fact that macrophytes were absent from the diet in summer, when perch returned to an almost exclusively
piscivorous diet, suggests that plant consumption is strongly associated with egg consumption.
Trophic categories: Ins = insectivorous, Inv = invertivorous, Lar = larvivorous, Her = herbivorous, Alg = algivorous, Det = detritivorous, Zoo = zooplanktivous, Pis =
piscivorous, Oni = omnivorous.
Juveniles of a
piscivorous fish, Japanese Spanish mackerel (Scomberomorus niphonius), form schools in which individuals are more dispersed with an SA of 33-44[degrees] (Masuda et al., 2003).
maculatus show different characteristics, but both species have the same
piscivorous feeding habit.
Eklov, "Prey refuges affecting interactions between
piscivorous perch and juvenile perch and roach," Ecology, vol.
The cyprinids to percids biomass ratio was highest (1.7) in the catch from the reference lake and lowest (0.7) in the catch from Lake Kento, a high proportion of which consisted of large
piscivorous perch.
Fry and juveniles feed on freshwater invertebrates until the first sea migration, which usually occurs at three to eight years of age, but are also available as prey to resident
piscivorous fish such as lake trout (Salvelinus namaycush).