Indirect Negative Impacts of Double-crested Cormorant (Phalacrocorax auritus) Management on Co-nesting Caspian Terns (Hydroprogne caspia) in Northern Lake Michigan, USA

Isotopic Discrimination in the Double-Crested Cormorant (Phalacrocorax auritus)

The diet-tissue discrimination factor is the amount by which a consumer's tissue varies isotopically from its diet, and is therefore a key element in models that use stable isotopes to estimate diet composition. In this study we measured discrimination factors in blood (whole blood, red blood cells and plasma), liver, muscle and feathers of Double-crested Cormorants (Phalacrocorax auritus) for ...

Identification of 24 polymorphic microsatellite markers for the double-crested cormorant (Phalacrocorax auritus).

Twenty-four polymorphic microsatellite markers were developed for the double-crested cormorant (Phalacrocorax auritus). The number of alleles ranged from two to 13 and observed heterozygosities ranged from 0.032 to 0.871. The use of these loci should enable researchers and biologists to learn more about the population structure and ecology of this species.

The Cumulative Effects of Management on the Population Dynamics of the Double-crested Cormorant Phalacrocorax auritus in the Great Lakes

Influence of Simulated Double-crested Cormorant, Phalacrocorax auritus, Predation on Multiple-batch Production of Channel Catfish,Ictalurus punctatus

The double-crested cormorant, Phalacrocorax auritus, is considered the primary depredating bird species on commercially produced channel catfish, Ictalurus punctatus, in the southeastern USA. We simulated different levels of cormorant predation on losses at harvest and economic effects on channel catfish production in a multiple-batch cropping system. We observed significant (P< 0.05) declines ...

Anatomy and Histochemistry of Spread-Wing Posture in Birds. I. Wing Drying Posture in the Double-Crested Cormorant, Phalacrocorax auritus

Spread-wing postures of birds often have been studied with respect to the function of behavior, but ignored with regard to the mechanism by which the birds accomplish posture. The double-crested cormorant, Phalacrocorax auritus, was used as a model for this study of spread-wing posture. Those muscles capable of positioning and maintaining the wing in extension and protraction were assayed histo...