Results 151 to 160 of about 1,924 (184)
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Pathogenicity of Clinostomum complanatum (Digenea: Clinostomidae) in piscivorous birds
Research in Veterinary Science, 2013The present study is focused on the pathogenicity of a parasitic digenea, Clinostomum complanatum among dead piscivorous birds, collected after mass mortalities in northern Iran. A total of 126 birds (15 species) were examined for parasitic infections.
Shokoofeh Shamsi +2 more
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Asymmetric impact of piscivorous birds on size-structured fish populations
Canadian Journal of Zoology, 2006 Fish are frequently considered the top predator in freshwater food web models despite evidence that predatory birds can impact fish populations. In this study, we quantified bird predation rates on experimental populations of rainbow trout ( Oncorhynchus mykiss (Walbaum, 1792)) created by stocking nine small lakes in British Columbia, Canada ...
Christa Beckmann +2 more
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FEEDING ECOLOGY OF PISCIVOROUS BIRDS AT LAKE ST LUCIA, PART 3: SWIMMING BIRDS
Ostrich, 1979Summary Whitfield, A. K. & Blaber, S. J. M. 1978. Feeding ecology of piscivorous birds at Lake St Lucia, Part 3: Swimming birds. Ostrich 50:10-20. The diets, foraging periodicities and feeding behaviour of the Reed Cormorant Phalacrocorax africanus, Whitebreasted Cormorant Phalacrocorax carbo and White Pelican Pelecanus onocrotalus were studied at Lake
Alan K Whitfield, S J M Blaber
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Piscivorous birds as top predators and fishery competitors in the lagoon ecosystem
Hydrobiologia, 2008Piscivorous birds have received much attention with respect to competition with fisheries for resources. The majority of studies have been focused on cormorants Phalacrocoracidae, while predation by other piscivorous bird species has often been overlooked. This study was designed to supplement sociological research (Bell, 2004), which revealed that the
Žydelis, Ramūnas, Kontautas, Antanas
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Estimating Mercury Exposure of Piscivorous Birds and Sport Fish Using Prey Fish Monitoring
Environmental Science & Technology, 2015 Methylmercury is a global pollutant of aquatic ecosystems, and monitoring programs need tools to predict mercury exposure of wildlife. We developed equations to estimate methylmercury exposure of piscivorous birds and sport fish using mercury concentrations in prey fish. We collected original data on western grebes (Aechmophorus occidentalis) and Clark'
Joshua T, Ackerman +6 more
openaire +3 more sources
FACTORS INFLUENCING THE ABUNDANCE OF PISCIVOROUS BIRDS ON LAKE KYLE, ZIMBABWE
Ostrich, 1987Summary Junor, F. J. R. & Marshall, B. E. 1987. Factors influencing the abundance of piscivorous birds on Lake Kyle, Zimbabwe. Ostrich 58:168-175. A five-year census of fish-eating birds on Lake Kyle, Zimbabwe, revealed that eight species were present in significant numbers with the Reed Cormorant being the most abundant.
B E Marshall
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THE ABUNDANCE AND FOOD CONSUMPTION OF PISCIVOROUS BIRDS ON LAKE KARIBA, ZIMBABWE-ZAMBIA
Ostrich, 1996Summary Hustler, K. & Marshall, B.E. 1996. The abundance and food consumption of piscivorous birds on Lake Kariba, Zimbabwe-Zambia. Ostrich 67:23-32. About 40 species of piscivorous birds have been recorded on Lake Kariba (Zimbabwe-Zambia) but only 26 were observed during this study, carried out in 1986–87.
B E Marshall
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Ecotoxicology and Environmental Safety, 2000 The present study monitored 10-year-old fish and piscivorous birds from sites contaminated for many Stars. The data reflected the results of actual, long-term environmental exposures, The results demonstrate that different tissues of fish have quite ...
W Z Wu +2 more
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FEEDING ECOLOGY OF PISCIVOROUS BIRDS AT LAKE ST LUCIA, Part 1: Diving Birds
Ostrich, 1978Alan K Whitfield, S J M Blaber
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