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In our recent study on the population genetic structure of … short-beaked common dolphins Delphinus delphis in southern … Australia (Bilgmann et al., 2008) we unequivocally … showed a high level of genetic differentiation between the … local common dolphin population in South Australia (SA)…
Diet, and in particular, food quality and quantity … can inXuence the reproductive performance of marine … predators. Also, the diet of specialist predators is often … monitored in programmes that model and manage ecosystems. We examined the diet of Adélie penguins (Pygoscelis … adeliae)…
Whale sharks (Rhincodon typus) are thought to aggregate in nearshore waters around Christmas Island … (105◦37E, 10◦29S) to consume the marine larvae of the endemic red land crab (Gecarcoidea natalis). However, there … have been no direct observations of sharks feeding on crab larvae.
Background: Prey DNA from diet samples can be used as a dietary marker; yet current methods for prey detection require a … priori diet knowledge and/or are designed ad hoc, limiting their scope. I present a general approach to detect diverse prey … in the feces or gut contents of predators.
Emperor penguins Aptenodytes forsteri are endemic to Antarctica. Their breeding colonies are located … in the coastal areas of the continent. The precise number of breeding locations is uncertain.
Adélie penguin (Pygoscelis adeliae) diet is an important indicator of prevailing environmental conditions and … resource availability. In this study, dietary variation within and between years was studied with fatty acid … signature analysis (FASA), stomach content analysis (SCA)…
In 2008, the emperor penguin Aptenodytes forsteri colony at Amanda Bay, East Antarctica, was … designated an Antarctic Specially Protected Area by the 31st Antarctic Treaty Consultative Meeting in Kyiv, Ukraine.
DNA-based techniques have proven useful for defining trophic links in a variety of … ecosystems and recently developed sequencing technologies provide new opportunities … for dietary studies. We investigated the diet of Australian fur seals (Arctocephalus pusillus … doriferus)…
We investigated whether diet composition determined from stable-isotope analysis … (SIA) was similar to that determined from stomach content analysis for Ad¨¦lie penguins Pygoscelis … adeliae.
Mitochondrial ribosomal DNA is commonly used in DNA-based dietary … analyses. In such studies, these sequences are generally assumed to be the … only version present in DNA of the organism of interest. However…
Line-transect distance sampling is a widely used method for estimating animal density from aerial surveys. Analysis of line-transect distance data usually relies on a requirement that the statistical distribution of distances of animal … groups from the transect line is uniform.
Knowledge of penguin abundance at regional and circumpolar scales across the Southern Ocean is important … for the development of ecosystem models and to estimate prey consumption by penguins to assess potential competition … with fisheries’ operations.
The Ross seal (Ommatophoca rossii) is the least studied of the Antarctic ice-breeding phocids. In … particular, estimating the population status of the Ross seal has proved extremely difficult.