Recently added articles from Canadian Journal of Zoology:
Effect of winter torpor upon antioxidative defence in Helix pomatia.(Report)
Jun 01, 2009; ... Introduction Torpor is one of adaptative phenomena enabling survival of land snails in temperate zone. Both winter torpor and summer torpor are connected by a metabolic rate depression of 5%-40% of the normal rate (Guppy and Withers 1999; Bishop and Brand 2000). On the other ...
Asymmetrical male-mediated gene flow between harbor seal (Phoca vitulina) populations in Alaska.(Report)
Jun 01, 2009; ... Introduction Harbor seals (Phoca vitulina richardii (Gray, 1864)) along the coast of Alaska are currently treated as three distinct management stocks by the National Marine Fisheries Service (NMFS) based on regional population trends: Southeast Alaska (stable or increasing; ...
Foraging behavior and predation success of the sand viper (Cerastes vipera).(Report)
Jun 01, 2009; ... Introduction All foraging activities of animals are affected by a variety of extrinsic factors (Bell 1990) like prey density and spatial distribution (e.g., Bond 1980), ambient temperature and humidity (e.g., Peterson et al. 1993; Angilletta et al. 2002), and level of ...
Phylogeography of the longnose dace (Rhinichthys cataractae) species group in northwestern North America--the origin and evolution of the Umpqua and Millicoma dace.(Report)
Jun 01, 2009; ... Introduction The longnose dace (Rhinichthys cataractae (Valenciennes, 1842)) has the widest geographic distribution of any native North American minnow (Cyprinidae). Longitudinally, it occurs in inland waters from the Atlantic to the Pacific coasts and, latitudinally, from north ...
Female territoriality in a paternal mouthbrooding cardinalfish to avoid predation against spawned eggs.(Report)
Jun 01, 2009; ... Introduction The defense of a breeding territory by males is a conspicuous component of many animal mating systems (Clutton-Brock 1989; Davies 1991; Ligon 1999). Males defend an area to exclude intrasexual competitors to gain access to multiple mates, thereby increasing their ...