Regulation of a Truncated Goldfish Vasotocin Receptor After Exposure to Pre-Ovulatory Females

Expression of the Truncated Vasotocin Receptor in Goldfish (Carrassius auratus)

Behavioral effects of hindbrain vasotocin in goldfish are seasonally variable but not sexually dimorphic.

We have previously demonstrated that centrally administered vasotocin (VT) inhibits social approach toward same-sex conspecifics in male and female goldfish, and that this behavioral effect is dependent upon VT projections to the hindbrain. We now show that there are no sex differences in sensitivity to the behavioral effects of VT, though differences do exist in responsiveness across seasons i...

Peptide effects on social behavior: effects of vasotocin and isotocin on social approach behavior in male goldfish (Carassius auratus).

The authors measured the effects of centrally infused peptides on social approach behaviors in goldfish (Carassius auratus), a social teleost. Vasotocin (VT) inhibited approach responses toward the visual stimuli of conspecifics in the absence of aggressive or sexual olfactory contextual cues in males, and a V1 receptor antagonist stimulated such responses, at least in males that were not highl...

Vasotocin immunoreactivity in goldfish brains: characterizing primitive circuits associated with social regulation.

The neuroanatomical characteristics of vasotocin (VT) and vasopressin (VP) systems have been described in numerous species from diverse vertebrate groups, including teleost fish. However, there are very few teleost species in which VT's effects on social behavior have been established and the neural circuits associated with that regulation fully described. We have previously shown that VT inhib...

P-64: Strategies to Optimize Reproductive Efficiencyby Regulation of Ovarian Function inyak (Poephagus Grunniens L.)

Background: To design a pre-Ovsynch hormonal strategy in yaks in order to increase the ovulatory response to the first GnRH injection of Ovsynch so that overall synchronization rate to Ovsynch could be improved. Materials and Methods: Non-lactating cyclic yak cows (n=33) were assigned to receive either no treatment before Ovsynch (control) or 0.375mg of PGF2(PreP) followed 2 d later by 10 g of ...