Prolonged Incubation of Non-Viable Eggs in the Bearded VultureGypaetus barbatus

Habitat selection and seasonal movements of young bearded seals (Erignathus barbatus) in the Bering Sea

The first year of life is typically the most critical to a pinniped's survival, especially for Arctic phocids which are weaned at only a few weeks of age and left to locate and capture prey on their own. Their seasonal movements and habitat selection are therefore important factors in their survival. During a cooperative effort between scientists and subsistence hunters in October 2004, 2005, a...

Sources of variation in mortality of the Bearded Vulture Gypaetus barbatus in Europe

We analyse the causes of mortality for the Bearded Vulture in Europe. Shooting (31%), intentional poisoning (26%), collision (18%) and unintentional poisoning (12%) were the most important causes of mortality. No differences were found between sexes or age classes (nonadults and adults) for any of the causes of death. When the four main categories of mortality were grouped in periods of 3 years...

Biology of the Bearded Seal ( Erignathus barbatus ) in Alaska , 1961 – 2009

Enumeration of viable and non-viable larvated Ascaris eggs with quantitative PCR.

The goal of this study was to further develop an incubation-quantitative polymerase chain reaction (qPCR) method for quantifying viable Ascaris eggs by characterizing the detection limit and number of template copies per egg, determining the specificity of the method, and testing the method with viable and inactivated larvated eggs. The number of template copies per cell was determined by ampli...

Feeding kinematics, suction and hydraulic jetting capabilities in bearded seals (Erignathus barbatus).

Feeding kinematics, suction and hydraulic jetting capabilities of bearded seals (Erignathus barbatus) were characterized during controlled feeding trials. Feeding trials were conducted both on land and in water, and allowed a choice between suction and biting, but food was also presented that could be ingested by suction alone. Four feeding phases, preparatory, jaw opening, hyoid depression and...