Animals living in temporally dynamic environments experience variation in resource
availability, climate and threat of infection over the course of the year. Thus, to survive and …

It appears advantageous for many non-human animals to store energy body fat extensively
and efficiently because their food supply is more labile and less abundant than in their …

Among the many significant contributions Frank A. Beach made to the field of behavioral
endocrinology, particularly influential was his emphasis on the importance of integration in …

Seasonal changes in an animal's morphology, physiology, and behavior are considered to
be an adaptive strategy for survival and reproductive success. In the present study, we …

Obesity is a major health problem contributing to increased subfertility in males, as well as
increased morbidity for diseases related to a decline in testosterone production with aging …

A major challenge in integrative biology is understanding the mechanisms by which
organisms regulate trade-offs among various functions competing for limiting resources. Key …

Mounting an immune response requires substantial energy, and it is well known that marked
reductions in energy availability (eg starvation) can suppress immune function, thus …

Immune function is better in females than in males of many vertebrate species, and this
dimorphism has been attributed to the presence of immunosuppressive androgens in males …

Individuals of many vertebrate species undergo seasonal changes in immune function in
addition to marked seasonal changes in reproductive, metabolic, and other physiological …

The oft-cited quote by Dhabzhansky above reflects the importance of applying an
evolutionary approach to the study of biological questions. Although this almost certainly …