eCite Digital Repository

Reproductive biology and per-recruit analyses of striped trumpeter (Latris lineata) from Tasmania, Australia: implications for management

Citation

Tracey, S and Lyle, JM and Haddon, M, Reproductive biology and per-recruit analyses of striped trumpeter (Latris lineata) from Tasmania, Australia: implications for management, Fisheries Research, 84, (3) pp. 358-367. ISSN 0165-7836 (2007) [Refereed Article]

DOI: doi:10.1016/j.fishres.2006.11.025

Abstract

This paper profiles the reproductive biology of and investigates the resilience of Tasmanian striped trumpeter under different levels of fishing pressure and size at entry to the fishery using per-recruit analysis. The spawning season around Tasmania occurs in the austral spring, with peak spawning activity in September and October. Size at 50% maturity was estimated at 543 mm fork length (FL) for females (estimated age = 6.8 years) and 529 mm FL for males (estimated age = 6.2 years). Striped trumpeter is a multiple spawner with batch fecundity estimates ranging from 205,054 for a 2 kg fish (540 mm FL) to 2,351,029 for a 9.5 kg fish (800 mm FL). At the current minimum legal size limit of 450 mm total length (equivalent to approximately 425 mm FL), yield-per-recruit was estimated to be close to maximum, and spawning biomass-per-recruit (SPR) ranged from 35 to 52% of virgin stock, depending on the mortality estimates used. Although these SPR are at a level considered sustainable, this methodology does not incorporate temporal variability, specifically recruitment variability. Therefore, conservative management measures are recommended until a dynamic model is applied to the striped trumpeter population. © 2006 Elsevier B.V. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Fisheries - Wild Caught not elsewhere classified
Author:Tracey, S (Dr Sean Tracey)
Author:Lyle, JM (Dr Jeremy Lyle)
Author:Haddon, M (Dr Malcolm Haddon)
ID Code:44696
Year Published:2007
Web of Science® Times Cited:11
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2007-08-01
Last Modified:2009-09-17
Downloads:0

Repository Staff Only: item control page