Twenty-eight odontocete species were identified as occupying sub-Antarctic and Antarctic habitat covered by the 1994 IWC-established Southern Ocean Sanctuary. Toothed whales evidently play an important part in polar ecosystem. Twenty-two are autochthonous showing a regular, apparently year-round, presence Sanctuary: Physeter macrocephalus, Kogia breviceps, Orcinus orca, Globicephala melas edwar...

The amphibian chytrid fungus Batrachochytrium dendrobatidis is a recently emerged pathogen that causes the infectious disease chytridiomycosis and has been implicated as a contributing factor in the global amphibian decline. Since its discovery, research has been focused on developing various methods of mitigating the impact of chytridiomycosis on amphibian hosts but little attention has been g...

For the embryos and tadpoles of amphibian species, exposure to ultraviolet-B radiation (UVBR) can be lethal, or cause a variety of sublethal effects. Low temperatures enhance the detrimental effects of UVBR and this is most likely because the enzyme-mediated processes involved in the repair of UVBR-induced damage function less effectively at low temperatures. Whether these repair processes are ...

Gene banking is arguably the best method available to prevent the loss of genetic diversity caused by declines in wild populations, when the causes of decline cannot be halted or reversed. For one of the most impacted vertebrate groups, the amphibians, gene banking technologies have advanced considerably, and gametes from the male line can be banked successfully for many species. However, cryop...

Se informan las abundancias y densidades relativas de delfínidos en el norte Chile (18°30’S-70°27’W; 25°23’S-72°53’W) entre marzo diciembre 2000, mediante 99 transectos franjas (longitud 31,7-162,4 km; media 95,26 ± 22,14 km). avistaron 5.841 individuos correspondientes a 8 especies. La abundancia relativa especies general, presentó un máximo principal 23°-23°59´S (0,48 ind/km) secundario 19°-1...

Seasonal cooling can modify the thermal preferenda of ectothermic vertebrates and elicit a variety of physiological responses ranging from winter dormancy to an acclimation response that partially compensates for the effects of low temperature on activity. Partial compensation of activity levels is particularly common in aquatic species for which seasonal temperature changes provide a stable cu...

Introduction Offshore oil and gas (O & G) infrastructure provides hard substrata of structural complexity in marine environments has been shown to have ecological value, particularly oligotrophic environments. As approaches end life, understanding such values is critical inform decommissioning decisions. Methods This study uses a decade industry remotely operated vehicle (ROV) imagery d...

Adcock, G.J. and Billing, T.M. and Carew, P.J. and Mulder, R.A. and Kraaijeveld, K. Department of Zoology, University of Melbourne, Melbourne 3010, VIC and Department of Biology, Darwin Building, UCL, Gower Street, London WC1E 6BT United Kingdom Mate choice and dispersal history within a population of the mutually ornamented black swan. Dispersal and mating behaviour were examined in the Lake W...