Fluctuations in oxygen influence facultative endothermy in bumblebees
نویسندگان
چکیده
منابع مشابه
Fluctuations in oxygen influence facultative endothermy in bumblebees.
Bumblebees are facultative endotherms, having the ability to elevate thorax temperature above ambient temperature by elevating metabolism. Here, we investigated the influence of hypoxia on metabolic demands and thermoregulatory capabilities of the bumblebee Bombus terrestris. We measured thorax temperature, rates of oxygen consumption and carbon dioxide production, and abdominal pumping rates o...
متن کاملFacultative but persistent trans-generational immunity via the mother's eggs in bumblebees
It is widely acknowledged that a mother, and the maternal environment, can have a profound effect on the phenotype of her offspring. For example, immunocompetent vertebrate mothers can pass on immune factors to their otherwise immune naïve offspring. Recently, it has also been demonstrated in invertebrates that maternal contact with pathogens and immune elicitors can have a positive impact on o...
متن کاملEndothermy and activity in vertebrates.
Resting and maximal levels of oxygen consumption of endothermic vertebrates exceed those of ectotherms by an average of five- to tenfold. Endotherms have a much broader range of activity that can be sustained by this augmented aerobic metabolism. Ectotherms are more reliant upon, and limited by, anaerobic metabolism during activity. A principal factor in the evolution of endothermy was the incr...
متن کاملcritical period effects in foreign language learning:the influence of maturational state on the acquisition of reading,writing, and grammar in english as a foreign language
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
15 صفحه اولAccounting for endothermy in fishes.
of a male. The number of mounts attempted by a male was also scored and recorded. The results of all the experiments were converted to lordosis quotient (LQ), defined as a percentage of full lordosis response (perineum elevated, all four legs extended from the initial crouch position and the head at an angle of 450 from the floor) divided by the number of mounts. Each group consisted of six ani...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2014
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.107052