New Zealand Journal of Marine and Freshwater Research abstracts

---

BREEDING IN THE FRESHWATER CRAYFISH PARANEPHROPS PLAN1FRONS WHITE

C. L. Hopkins

Fisheries Research Division, Marine Department, Wellington

Abstract The breeding cycle of female Paranephrops planifrons is described. The incubation of eggs and young takes place between April and December and covers about 25-26 weeks. The winter population contains some apparently adult females which do not breed. The number of eggs laid increases with the size of the parent, and in the population studied varied from some 20 to 30 eggs at 17 mm carapace length to 150 eggs at 30 mm carapace length. After hatching the young pass through two moults while still attached to the parent.

N.Z. Jl mar. Freshwat. Res. 1: 51-8
Received for publication 21 September 1966

PDF file of entire paper: medium quality (441K); (scanned from paper original: notes about this process)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page