Larval and juvenile distribution and growth of Patagonian toothfish around South Georgia
Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Author
North, A.Date
2002
Metadatos
Mostrar el registro completo del ítemAbstract
Early stages of toothfish are reported from cruises between 1978 and 2001. South Georgia was regularly sampled, Shag Rocks was briefly sampled in three summers, andBurdwood Bank was sampled in 1997. Most samples were using 8 m2 and 1 m2 nets in the upper 250 m and upper 3 m, respectively. Forty-three pelagic larvayearly juvenile stages between 18.2 and 63 mm standard length (L,) were taken between December and March. Four specimens were taken at Burdwood Bank, one at Shag Rocks, and 38 at South Georgia. Forty fish were from the upper 250 m, and 23 from the upper 3 m. They occurred onshelf and offshore over water depths between 10 and 3000 m. Estimated growth rate, at South Georgia from 1 1 cohorts (including published data), is c. 1% L, d-' (n = 39). From this and a hatch size of 15 mmL,, the predicted hatching season is November to mid-December. From seven trawl surveys during summer at South Georgia and Shag Rocks between 1986 and 2000, the mean depth of the smaller demersal juveniles 13-25 cm total length (L,) was < 140 m, indicating that early juveniles probably migrate inshore.Journal
Antarctic ScienceVolume
14Issue/Article Nr
1Page Range
pp.25-31ae974a485f413a2113503eed53cd6c53
https://doi.org/10.1017/S0954102002000548
Scopus Count
Colecciones