Results 111 to 120 of about 432 (147)
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DIET OF DOUBLE-CRESTED CORMORANTS (PHALACROCORAX AURITUS) WINTERING ON THE CENTRAL TEXAS COAST
The Southwestern Naturalist, 2004Abstract Diets of double-crested cormorants (Phalacrocorax auritus) wintering on the central Texas coast were determined from the contents of 51 stomachs from Lavaca Bay and 28 stomachs from upper Laguna Madre. Diets consisted primarily of striped mullet (Mugil cephalus) and Gulf menhaden (Brevoortia patronus) in Lavaca Bay and striped mullet and Gulf ...
Kim Withers, Tammy S. Brooks
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Two New Species of Helminths from the Cormorant, Phalacrocorax auritus
The Journal of Parasitology, 1950On November 17, 1947, two cormorants, Phalacrocorax auritus, were sent to Dr. Lyell J. Thomas for study. These birds were shot five miles northwest of Grafton, Illinois on the Illinois River and brought over by Dr. H. B. Mills, Chief of the Illinois State Natural History Survey. With the permission of Dr.
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Use of Artificial Eggs Reduces Double-Crested Cormorant (Phalacrocorax auritus) Fledging
Waterbirds, 2019Double-crested Cormorant (Phalacrocorax auritus) populations have rapidly grown across the United States. In some locations cormorant populations have become a management concern due to real or perceived effects on local fish populations, altering island vegetation, and displacing other colonial waterbirds.
Tanya M. Roerick, Steve A. Mortensen
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2009
Maternal investment of yolk and albumen in avian eggs varies with egg mass and contributes to variation in hatchling mass. Here we use the natural variation in mass and composition of Double-crested Cormorant (Phalacrocorax auritus) eggs to examine consequences of variation in yolk and albumen mass on hatchling phenotype.
Edward M, Dzialowski +2 more
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Maternal investment of yolk and albumen in avian eggs varies with egg mass and contributes to variation in hatchling mass. Here we use the natural variation in mass and composition of Double-crested Cormorant (Phalacrocorax auritus) eggs to examine consequences of variation in yolk and albumen mass on hatchling phenotype.
Edward M, Dzialowski +2 more
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Environmental Toxicology and Chemistry, 1996
Abstract To test an association between environmental contaminants and the prevalence of congenital anomalies in colonial waterbirds, we collected representative eggs for chemical analysis from double-crested cormorant nests at colonies in Lake Michigan, Wisconsin, USA, and Lake Winnipegosis, Manitoba, Canada, and periodically revisited ...
Jill M. Larson +8 more
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Abstract To test an association between environmental contaminants and the prevalence of congenital anomalies in colonial waterbirds, we collected representative eggs for chemical analysis from double-crested cormorant nests at colonies in Lake Michigan, Wisconsin, USA, and Lake Winnipegosis, Manitoba, Canada, and periodically revisited ...
Jill M. Larson +8 more
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Veterinary Ophthalmology, 2002
AbstractTopical vecuronium bromide (Norcuron®) and combinations with atropine and phenylephrine, were evaluated as mydriatics in juvenile double‐crested cormorants (Phalacrocorax auritus). Nine cormorants were treated with each of four protocols: 1% atropine; 4 mg/mL vecuronium bromide (total 0.16 mg/eye); atropine with vecuronium; and atropine, 2.5 ...
Suzan M, Loerzel +3 more
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AbstractTopical vecuronium bromide (Norcuron®) and combinations with atropine and phenylephrine, were evaluated as mydriatics in juvenile double‐crested cormorants (Phalacrocorax auritus). Nine cormorants were treated with each of four protocols: 1% atropine; 4 mg/mL vecuronium bromide (total 0.16 mg/eye); atropine with vecuronium; and atropine, 2.5 ...
Suzan M, Loerzel +3 more
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Avian Diseases, 2001
Avian paramyxovirus type 1 (Newcastle disease virus) and Salmonella typhimurium were isolated from the brain and lung tissues of double-crested cormorants (Phalacrocorax auritus) from Lac Canard, Alberta, Canada. More than 100 birds died during this outbreak in 1999.
A, Clavijo, Y, Robinson, J, López
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Avian paramyxovirus type 1 (Newcastle disease virus) and Salmonella typhimurium were isolated from the brain and lung tissues of double-crested cormorants (Phalacrocorax auritus) from Lac Canard, Alberta, Canada. More than 100 birds died during this outbreak in 1999.
A, Clavijo, Y, Robinson, J, López
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Colonial Waterbirds, 1998
-Tissues from 99 Double-crested Cormorants (Phalacrocorax auritus) collected between 1994 and 1997 from southern Florida, were analyzed for concentrations of mercury and selenium. These concentrations were correlated with each other, including concentrations of mercury and selenium in liver. Mercury and selenium in liver increased from a mean of 15 and
Maria Soledad Sepulveda +3 more
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-Tissues from 99 Double-crested Cormorants (Phalacrocorax auritus) collected between 1994 and 1997 from southern Florida, were analyzed for concentrations of mercury and selenium. These concentrations were correlated with each other, including concentrations of mercury and selenium in liver. Mercury and selenium in liver increased from a mean of 15 and
Maria Soledad Sepulveda +3 more
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Cardiac physiology and diving behaviour of double-crested cormorants (phalacrocorax auritus)
2009Heart rate and dive behaviour were monitored in adult double-crested cormorants during shallow and deep diving and after exposure to different breathing gas mixtures to investigate the role of intravascular chemoreceptors in cardiac and behavioural control during voluntary diving.
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Comparative Parasitology, 2012
Abstract We examined the gastrointestinal parasite fauna of adult double-crested cormorants from breeding colonies on 4 very different lakes spanning a major ecotone from prairie to boreal forest in Saskatchewan, Canada. Our objectives were to document regional parasite fauna and identify potential differences based on breeding colony location.
Brent A. Wagner +5 more
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Abstract We examined the gastrointestinal parasite fauna of adult double-crested cormorants from breeding colonies on 4 very different lakes spanning a major ecotone from prairie to boreal forest in Saskatchewan, Canada. Our objectives were to document regional parasite fauna and identify potential differences based on breeding colony location.
Brent A. Wagner +5 more
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