Growth rate of speckled snapper Lutjanus rivulatus (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa

被引：5

作者：

Mann, B. Q. ^{[1
,2
]}

Lee, B. ^{[3
]}

Cowley, P. D. ^{[4
]}

机构：

[1] Oceanog Res Inst, Durban, South Africa

[2] Univ KwaZulu Natal, Sch Life Sci, Durban, South Africa

[3] Falkland Islands Govt, Dept Fisheries, Stanley, Falkland Island, Spain

[4] South African Inst Aquat Biodivers, Grahamstown, South Africa

来源：

AFRICAN JOURNAL OF MARINE SCIENCE | 2016年 / 38卷 / 01期

关键词：

growth parameters; marine protected area; maximum likelihood; precautionary management; tagging; MAXIMUM-LIKELIHOOD APPROACH; MARINE PROTECTED AREA; EAST-COAST; AGE; PARAMETERS; MARK; MORTALITY; PISCES; FISH; SPARIDAE;

D O I：

10.2989/1814232X.2016.1162195

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The growth rate of speckled snapper Lutjanus rivulatus was investigated using data from a long-term tag-recapture study conducted in the St Lucia Marine Reserve within the iSimangaliso Wetland Park, a World Heritage Site in northern KwaZulu-Natal, South Africa. A total of 1 429 L. rivulatus were tagged and 453 (31.7%) individual fish were recaptured one or more times. Growth rates were modelled from the tag-recapture data using a maximum-likelihood approach. It is shown that L. rivulatus is a slow-growing species with L = 918 mm FL, K = 0.06 and phi-prime (O, the growth index) = 2.69. The effects of deep-hooking and multiple captures were tested and this revealed that there was no significant impact on the growth of L. rivulatus. The growth index was lower than that recorded in many other similar congeneric species. Slow growth, coupled with high levels of residency and site fidelity, suggest that this species is vulnerable to exploitation and that a precautionary approach towards future management is appropriate.

引用

页码：111 / 118

页数：8