Abstract For humpback whales, the mother–calf pair is only stable social unit with calves following their mother after birth and staying in close proximity. This strategy ensures maintenance of such proximity between her calf, benefiting from maternal protection care. Using multi-sensor tags, we recorded diving behavior at three different age-classes (C1, C2, C3) to assess how developed natural...

Highly charged ions (HCIs) are an important tool in various fields of basic and applied physical research. However, in many cases the species of interest cannot be produced directly by a primary ion source. Therefore, charge breeding, i.e. the conversion of singly charged ions to highly charged ions, is an essential part of projects such as nuclear or astrophysical experiments with post acceler...

The Brown-headed Cowbird (Molothrus ater) is a widespread brood parasite that has attracted considerable recent attention as a possible threat to forestdwelling songbirds (e.g. Finch 1991, Robinson et al. 1995). Cowbirds are unusual among passerines in that their parasitic nature allows some populations to have spatially and temporally separate breeding and feeding activities (Rothstein et al. ...

BACKGROUND Generalist predators may vary their diet and use of habitat according to both internal state (e.g. breeding stage) and external (e.g. weather) factors. Lesser black-backed gulls Larus fuscus (Linnaeus 1758) are dietary generalists, foraging in both terrestrial and marine habitats during breeding. We investigate what affects the gulls' propensity to forage at sea or on land. We assess...

Context Baleen whale calves rapidly increase in size and improve locomotion abilities, while on their low-latitude breeding ground, allowing them to undertake a successful migration high-latitude feeding grounds. Aims We investigated energy expenditure resting behaviour of humpback (Megaptera novaeangliae) mother–calf pairs regard changes calf length an undisturbed breeding/resting ground off E...

Perennial ryegrass (Lolium perenne L.) is considered the most important pasture species in temperate agriculture, with over six million hectares of sown area Australia alone. However, perennial has poor persistence some environments because low tolerance to a range both abiotic and biotic stresses. To breed ryegrass, cultivars greater productivity may require evaluation genotypes number years. ...

In recent years, the use of intrinsic markers such as stable isotopes to link breeding and foraging grounds of migratory species has increased. Nevertheless, several assumptions still must be tested to interpret isotopic patterns found in the marine realm. We used a combination of satellite telemetry and stable isotope analysis to (i) identify key foraging grounds used by female loggerheads nes...

I think we need to keep in mind a few things that shows and judging of livestock do not do. All judging is a series of compromises. In judging livestock at a show, the judge tries to get what he considers the most of the best in his top animal. Anyone who knows anything at all about livestock will realize that, in a good show, the champion is not better in every respect than the reserve champio...