Evaluation of Bait Usage in the KwaZulu-Natal Linefishery, South Africa

Pradervand, P.; Fennessy, S.T.

doi:10.4314/wiojms.v8i1.56675

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…more rocky surf-zone habitat sampled in the former surveys) and not because of a change in stock abundance (Mann et al 2002a). Furthermore, the catchability of N. lithophilus is low due to its herbivorous diet (Joubert 1981b), and most anglers use sardine as bait (Mann et al 2002a, Pradervand andFennessy 2009). Mann et al (2002a) showed that the spawner-biomass-per-recruit for N. lithophilus was at 46% of its pristine level, indicating that the stock is being sustainably exploited in KZN.…”

Section: Total Catch and Catch Compositionmentioning

confidence: 99%

An assessment of participation, catch and effort in the KwaZulu-Natal shore-based marine linefishery, with comments on management effectiveness

Dunlop

Mann

2012

African Journal of Marine Science

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The primary purpose of this study was to evaluate the effectiveness of current management of the KwaZulu-Natal (KZN) shore-based marine linefishery. Methods used included a stratified-random creel survey and an associated questionnaire survey. The study was undertaken between February 2009 and January 2010. Total participation ranged between 41 283 and 68 087 shore-anglers. Results show that there has been little change in participation in the KZN shore-fishery since 1994-1996. In contrast, total angler effort (779 382-843 702 angler-days y -1 ) has decreased substantially over the past 13 years. Overall catch per unit effort (CPUE) for the KZN shore-linefishery amounted to 0.18 ± 0.3 fish angler -1 h -1 or 0.07 ± 0.13 kg angler -1 h -1 . In all, 84 fish species, belonging to 39 families, were recorded in catches of shore-anglers during the study period. Only five species accounted for 75% of the catch recorded along the coast (Sarpa salpa 34.8%, Pomatomus saltatrix 14.7%, Diplodus capensis 14.5%, Pomadasys olivaceum 6.5% and Rhabdosargus holubi 4.9%). The total annual catch for the KZN shore-linefishery was estimated between 249.2 and 276.7 t y -1 (or 636 589-706 995 fish y -1 ). Analysis of overall CPUE, catch composition and total catch in the shore-based linefishery of KZN suggested that it is currently in a relatively stable condition and that little change has occurred over the past 13 years. However, comparisons of species-specific CPUE values from this study with recent literature suggest that some species (e.g. Argyrosomus japonicus) are severely overexploited. Over the past few decades there seems to have been a gradual transition in landings from long-lived, high trophiclevel, piscivorous fish (e.g. A. japonicus) to more short-lived, low trophic-level species (e.g. S. salpa). The results therefore suggest that present exploitation levels may not be sustainable for certain slow-growing, long-lived fish species. Current management regulations appear to have limited effectiveness based on poor angler compliance and knowledge of the regulations. In this regard, it is important to consider alternate management measures that may offer more effective protection to fish and at the same time be more easily understood by all anglers in the linefishery. Recommendations for improved management and the importance of the establishment of an effective MPA network are briefly discussed.

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Section: Total Catch and Catch Compositionmentioning

confidence: 99%

An assessment of participation, catch and effort in the KwaZulu-Natal shore-based marine linefishery, with comments on management effectiveness

Dunlop

Mann

2012

African Journal of Marine Science

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“…Those permits were granted in order to assess the viability of a fishery for E. wongratanai and the handful of permit holders have subsequently caught only small quantities of fish annually (1–2 t: van der Lingen et al, ) . Etrumeus wongratanai is highly desired as bait by local line‐fishers, but as it cannot be targeted by commercial fishers, catches have to date been illegal (Pradervand & Fennessy, ).…”

Section: Introductionmentioning

confidence: 99%

Observations on the biology and seasonal variation in feeding of the east coast round herring Etrumeus wongratanai (Clupeiformes), off Scottburgh, KwaZulu‐Natal, South Africa

Vorsatz

Lingen²,

Gibbons

2019

Journal of Fish Biology

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The basic biology and ecology of the South African east coast round herring Etrumeus wongratanai was investigated from samples of fish collected between 2013 and 2016. This species is short‐lived and reaches a maximum of 3 years of age, with rapid growth in its first year of life. It reproduces from June to December (austral summer) and condition factor was lowest in May through to August and increased from September, probably reflecting the physiological strain before and during spawning. Fish larvae were the most important food items consumed during summer, whereas eucalanid copepods were the most important prey at other times of the year. Stable‐isotope data suggest that there are gradual changes in the trophic level with increasing fish size, δ15N and δ13C values also differed between seasons. The results obtained here are compared with those of other Etrumeus species, regionally and globally.

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Diet and gill morphology of the East Coast redeye round herringEtrumeus wongratanaioff KwaZulu-Natal, South Africa

Vorsatz

Lingen

Gibbons

2015

African Journal of Marine Science

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Evaluation of Bait Usage in the KwaZulu-Natal Linefishery, South Africa

Cited by 3 publications

References 18 publications

An assessment of participation, catch and effort in the KwaZulu-Natal shore-based marine linefishery, with comments on management effectiveness

An assessment of participation, catch and effort in the KwaZulu-Natal shore-based marine linefishery, with comments on management effectiveness

Observations on the biology and seasonal variation in feeding of the east coast round herring Etrumeus wongratanai (Clupeiformes), off Scottburgh, KwaZulu‐Natal, South Africa

Diet and gill morphology of the East Coast redeye round herringEtrumeus wongratanaioff KwaZulu-Natal, South Africa

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