
TY  - JOUR
A1  - Horn, P. L. 
A1  - Hurst, R. J. 
T1  - Age and stock structure of gemfish (<emph type="2">Rexea solandri)</emph> in New Zealand waters
JF  - Marine and Freshwater Research
JO  - Mar. Freshwater Res.
Y1  - 1999
VL  - 50
IS  - 2
SP  - 103
EP  - 115
KW  - 
UR  - https://doi.org/10.1071/MF98084 
N2  - Age determination of gemfish by counting hyaline zones in otoliths was validated by following the progression of modes in length&#8211;frequency distributions and the progression of strong and weak year classes in age&#8211;frequency distributions. Length&#8211;frequency and otolith samples were examined from four areas (west Northland, east Northland and Bay of Plenty, Wairarapa coast, and the Stewart- Snares shelf). Age&#8211;frequency distributions and von Bertalanffy growth parameters were calculated and compared between areas. Two gemfish stocks are indicated on the basis of patterns of year class strengths, trends in commercial landings and likely spawning areas; one off the east and north of the North Island, and another off the west and south of the South Island. Estimates of natural mortality are presented for the two stocks. 
ER  -

