Intra-specific variation in life history traits and/or population trends provides 'natural
experiments' to identify causes of observable differences among populations of organisms …

A central issue in life history theory is how organisms trade off current and future
reproduction. A variety of organisms exhibit intermittent breeding, meaning sexually mature …

Here, we evaluate maternal offloading of 16 trace elements (Essential: Co, Cr, Cu, Fe, Mn,
Ni, Se and Zn; Nonessential: Al, As, Ba, Cd, Hg, Pb, Tl and U) and determine mother …

Feeding ecology and geographic location are 2 major factors influencing animal stable
isotope signatures, but their relative contributions are poorly understood, which limits the …

Highly migratory marine species pose a challenge for the identification of management units
due to the absence of clear oceanographic barriers. The population structure of North …

The trophic ecology of marine vertebrates has been increasingly studied via stable isotope
analysis of body tissues. However, the theoretical basis for using stable isotopes to elucidate …

Humpback whales Megaptera novaeangliae in the North Pacific Ocean are a migratory
species known to have a complex population structure on both feeding and breeding …

Detailed knowledge on migratory routes connecting distant breeding, developmental and
foraging areas is a key prerequisite for the successful management of marine vertebrates …

The blood and eggs of the flatback turtle (Natator depressus) sampled when nesting at
Curtis Island, Queensland, Australia. In the blood, zinc was present at the highest …

Syngnathids are vulnerable ovoviviparous fishes in which males undergo repeated
brooding within a reproductive season. The isotopic effects of diet on both breeders (pooled …