We do know that it is very strongly influenced by weather conditions, and we have found in the past that a combination of a warm spring followed by a return to freezing conditions in the incubation period is associated with breeding failure".
Four of the cases were associated with breeding herds of hedgehogs.
Aggressive competition for reproductive opportunities in males may lead to the evolution of traits such as horns or antlers, which are associated with breeding success (Andersson 1994).
Most cases of B-virus detection in asymptomatic macaques by culture or PCR are associated with breeding season stress (9, 10 ), immunosuppression (25 ), or primary infection (10, 11 ).
In that work, the two processing sub-groups were associated with breeding history in the USA, while sub populations were not discernible in fresh market cultivars and in vintage varieties.
In this study, we attempted to separate the role of winter habitat carry-over effects and the role of intrinsic quality on plumage characteristics that are associated with breeding events by using two feather groups, moulted at different points in the annual cycle.
Under this hypothesis, we predicted that longer foraging trips would be associated with reduced breeding performance in cohorts of kittiwakes groups marked with radio-transmitters at the same colony in the same year.
In G. moholi the wide-spread torpor avoidance may be associated with its breeding pattern [19].
Since it was difficult to quantify additional fixed costs that may be associated with decisions on the breeding structures (e.g. the cost of a new performance test unit when the population size is increased), we included no fixed costs in the reference scenario.
It seems that such increasing expression of HSPB9 and HSPB10 in breeding season may be associated with male reproductive performance but independent of heat stress.
