A multi-year radio-telemetric study of the copperhead Agkistrodon contortrix (Serpentes: Viperidae) was conducted at the north-eastern extreme of its range to determine the relationship of plasma sex steroids of males to the mating season. Blood samples were collected in situ approximately every 2we...
After mating, the female builds the nest and then lays from 3 to 7 light blue eggs. She lays one egg a day and then incubates it. They hatch in about two weeks. The chicks are helpless and fed by both parents. At first, they’re given soft-bodied food such as earthworms, but as...
2010 Relationship of plasma sex steroids to the mating season of copperheads at the north-eastern extreme of their range. J. Zool. 280,363-370.Smith CF, Schuett GW, Schwenk K (2010) Relationship of plasma sex steroids to the mating season of copperheads at the north- eastern extreme of ...
cerana queens produced at the beginning and end of the queen production season in Liaoning Province. We found that all the queens were suitably mated and there was no significant difference in the mating frequency between early spring queens and late summer queens. In addition, our study ...