| Because of their feeding habitats, pelicans and other piscivorous birds usually don't contract avian botulism. |
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| This stream contains a diverse community of fishes, including the piscivorous cichlid fish, Petenia splendida. |
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| Those effects are exacerbated in piscivorous species, because of the tendency of PCBs to biomagnify at upper trophic levels. |
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| Unlike other whitefishes, which feed on plankton and benthic invertebrates, inconnu are mainly piscivorous. |
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| As would be assumed with juvenile or young fish, some predation could occur from piscivorous birds. |
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| The Yarra River is a large slow-moving stream that empties into the Caribbean Sea and contains many large piscivorous predators. |
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| The bulk of their diet is made up of crustaceans and molluscs, larger fish become more piscivorous, feeding upon herring and sand eels. |
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| She is here competing with other piscivorous birds in search of anchovy, shiner perch and grunion to eat. |
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| Even when forage fish are available, Westslope Cutthroat Trout are not highly piscivorous. |
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| For non piscivorous fishes of the reservoirs, the recommended consumption is generally 12 meals or more per month, or unrestricted consumption. |
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| In piscivorous species, the return time will be longer, ranging from 19 to 29 years depending on the species. |
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| Mercury in its methylated form enters the food chain and is bioconcentrated, with highest concentrations occurring in piscivorous fish and birds. |
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| With all the fish about, Wales unsurprisingly attracts piscivorous predators. |
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| Zander mouths have a smaller gape than pike, so although large fish are almost exclusively piscivorous, they take much smaller prey than a pike of similar size. |
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| For piscivorous species of the reservoirs, the recommended consumption is generally 2 meals per month. |
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| There are six species of which a sporadically high number of blue whales and opportunistic species as well as piscivorous species. |
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| These surveys would also permit a better assessment of the duration of the temporary increase in mercury levels in piscivorous species. |
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| There is no evidence that piscivorous animal or fish species are affected by these levels. |
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| Being piscivorous species, salmon and trout require fish meals and oils in their diets for optimal performance. |
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| Survival is likely lowest from the egg to juvenile stage when they are sensitive to environmental degradation, especially sedimentation and dewatering, and predation by piscivorous fishes. |
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| For instance, the large-bodied Bohaiornis may have been a carnivorous species, Longipteryx's pointy snout indicates a piscivorous diet, and Pengornis was likely to have fed on soft-shelled invertebrates. |
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| On the Japanese island of Okinawa, for example, people have a strikingly low rate of mental disorder and Okinawans are notable fish eaters, even by the standards of a piscivorous country like Japan. |
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| They are also intended to determine the risk posed by the increase in fish mercury levels for the populations of birds and piscivorous mammals that use the hydroelectric reservoirs. |
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| We optimized the monitoring of piscivorous fish at the La Grande complex. |
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| Just downstream of Eastmain-1-A and Sarcelle powerhouses, non-piscivorous species will become piscivorous because of the availability of many small fish made vulnerable to predation following passage through the turbines. |
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| At the La Grande complex, mercury levels in non-piscivorous fish have returned to the values observed in natural environments, and will soon have returned to normal values in piscivorous species. |
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| In natural cycles, anisakid larvae are transmitted to marine mammals or piscivorous birds when they eat raw saltwater fish or squid. |
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| In larger systems, such problems could be minimized and stocking of piscivorous fish would be possible, enabling natural development of planktivorous fish. |
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| Piscivorous fishes, such as groupers and barracudas, have much larger mouths and more impressive dentition than goatfishes. |
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