Human evolution has clearly been shaped by gene–culture interactions, and there is
growing evidence that similar processes also act on populations of non-human animals …

Background On 2 May 2001, the National Marine Fisheries Service (NMFS) received a
petition from the Center for Biological Diversity and 10 co-petitioners requesting that …

Killer whales (Orcinus orca) currently comprise a single, cosmopolitan species with a
diverse diet. However, studies over the last 30 yr have revealed populations of sympatric …

This paper provides field descriptions and biological observations of three different forms of
killer whale (Orcinus orca) that occur in Antarctica based on field observations and a review …

Recovery plans for endangered southern resident killer whales Orcinus orca have identified
reduced prey availability as a risk to the population. In order to better assess this risk, we …

The cost of vocal behaviour is usually expressed in energetic terms; however, many animals
may pay additional costs when predators or potential prey eavesdrop on their vocal …

Ecological divergence has a central role in speciation and is therefore an important source
of biodiversity. Studying the micro‐evolutionary processes of ecological diversification at its …

The cosmopolitan killer whale Orcinus orca feeds on a wide variety of prey types over its
global range, but in at least some regions, genetically distinct and ecologically specialised …

The availability of mitochondrial genome sequences is growing as a result of recent
technological advances in molecular biology. In phylogenetic analyses, the complete …

Only one of the 5000 extant louse species (Phthiraptera) and no species of flea
(Siphonaptera), parasitic helminth (Platyhelminthes), parasitic nematode (Nemata), mite, or …