Content with tag procellariiformes .

The six most important threats for petrels and shearwaters

Shearwaters and petrels are highly adapted seabirds that occur across all the world’s oceans. Petrels are a threatened seabird group comprising 120 species. They have bet-hedging life histories typified by extended chick rearing periods, low fecundity, high adult survival, strong philopatry, monogamy and long-term mate fidelity and are thus vulnerable to change. Here, 38 petrel conservation researchers summarize information regarding the most important threats according to the IUCN Red List...

Geographic isolation, key to the absence of parasites of avian malaria in Cory’s shearwater

The apparent scarcity or absence of blood parasites in some avian groups, such as seabirds, has been related to intrinsic and extrinsic factors including host immunological capacity, host-parasite assemblage, and ecological parameters, but also to reduced sensitivity of some methods to detect low parasite prevalence/intensities of infection. Here, the haemosporidian parasite prevalence was examined in a breeding population of a long-distance migrant seabird, nesting in the Macaronesian...

Cross-species amplification of microsatellite loci in sub-Antarctic seabirds

Microsatellite loci are ideal for testing hypotheses relating to genetic segregation at fine spatio-temporal scales. They are also conserved among closely related species, making them potentially useful for clarifying interspecific relationships between recently diverged taxa. However, mutations at primer binding sites may lead to increased nonamplification, or disruptions that may result in decreased polymorphism in nontarget species.