...David G. Hazlerigg; Daniel Appenroth; Barbara M. Tomotani; Alexander C. West; Shona H. Wood ABSTRACT The polar regions receive less solar energy than anywhere else on Earth, with the greatest year-round variation in daily light exposure; this produces highly seasonal environments, with short...

... their immune response, but comprehensive studies are lacking. We investigated variation in immune responses of adult male and female red-eared sliders ( Trachemys scripta ) across the entire active season. We characterized seasonal variation in innate, cell-mediated and humoral components via bactericidal...

... in the polyphyodontic stingray Dasyatis sabina across a consecutive 24 month period shows a stable molariform morphology for females but a periodic shift in male dentition from a female-like molariform to a recurved cuspidate form during the reproductive season. The grip tenacity of the male dentition is greater...

... the seasonal ambient value. The maximum cardiac output under each temperature condition was determined by altering inflow pressure to the heart. Acute temperature increase produced positive chronotropic and inotropic effects in winter fish. Acute temperature decrease produced a negative chronotropic...