The current study assesses the psychological and psychiatric aftermath of war captivity; 164 Israeli ex-POWs and 189 comparable controls were assessed for posttraumatic stress disorder, intrusion and avoidance tendencies, and generalized psychiatric symptomatology 18 years after the war. Findings indicated that trauma-related psychopathology and general psychiatric symptomatology were more prev...

IN a previous paper (Shapiro and Zwarenstein, 1933) it was shown that castration in Xenopus laevis results after 6 months in a persistent fall in serum calcium in males and females. During the course of the investigation it was observed that the serum calcium of the females used as controls, i.e. animals maintained in captivity, was significantly lower than that of animals brought in fresh from...

Captive breeding programs are widely used for the conservation and restoration of threatened and endangered species. Nevertheless, captive-born individuals frequently have reduced fitness when reintroduced into the wild. The mechanism for these fitness declines has remained elusive, but hypotheses include environmental effects of captive rearing, inbreeding among close relatives, relaxed natura...

Experiments conducted on captive animals allow scientists to control many variables; however, these settings are highly unnatural. Previous research has documented a large difference in microbial communities between wild animals and captive-bred individuals. However, wild-caught animals brought into captivity might retain their natural microbiota and thus provide a better study system in which ...

Long-term maintenance of captive populations followed by release of captive animals into the wild is one of many approaches to endangered species conservation. To assess captivity’s effects on behavior, a simulated predator was presented and response behaviors measured in oldfield mice, Peromyscus polionotus subgriseus. The animals tested were from four populations collected from Ocala National...

Two adaptationist hypotheses have been proposed to explain why stress, particularly elevation of stress hormones (i.e. glucocorticoids), tends to suppress immune functions. One is that immune suppression represents efforts to minimize autoimmune responses to self-antigens released as organisms cope with stressors (i.e. the autoimmune-avoidance hypothesis). The other is that immune suppression o...