FN Archimer Export Format
PT C
TI Utilisation de caracteres sexuels secondaires pour la determination de la taille a maturite sexuelle de Nephrops norvegicus dans la region Sud-Bretagne
OT Utilisation of the secondary sexual characters for the determination of the size at first maturity in Nephrops norvegicus in the south Brittany area
BT 
AF MORIZUR, Yvon
AS 1:;
FF 1:PDG-DOP-DCB-STH-LBH;
SI BREST
SE PDG-DOP-DCB-STH-LBH
UR https://archimer.ifremer.fr/doc/1979/acte-2344.pdf
LA French
DT Proceedings paper
DE ;ANE, France;Nephrops norvegicus;length weight relationships;sexual maturity
AB In crustaceans, size at first maturity is often determined by secondary sexual characters. The present work tries to determine the size at first maturity in Nephrops norvegicus from South-Brittany area with the development of some secondary sexual characters. We study a qualitative character - the presence or absence of ovigerous setae in females and biométrie characteristics - the width of the second abdominal segment in females, the length of the propod at the first pereiopod in males and females - The study of the relative growth of the propod length shows that males may reach sexual maturity at 19mm carapace length. The first maturity in females is reached at 23.5mm later than the coming out of the ovigerous setae. That carapace length is obtained through the study of the relative growth of the abdominal length.  
PY 1979
PD OCT
CT CM. 1979/ K : 40
ID 2344
ER

EF