Are aggregation-fisheries sustainable? Reef fish fisheries as a case study

Sadovy, Yvonne; Domeier, Michael L.

doi:10.1007/s00338-005-0474-6

Cited by 306 publications

(252 citation statements)

References 33 publications

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“…These studies have based their conclusions on extensive databases of fisheries-dependent data (i.e., landings statistics), primarily from developed nations. However, fisheries statistics are commonly unavailable in developing nations where artisanal (subsistence or small-scale commercial) fisheries exist [9][10][11]. Despite the problem of insufficient data, it remains imperative to assess region-wide effects of extraction on predatory fish populations and to indicate whether indirect effects of human activities exist in the communities to which they belong (e.g., dominance shifts) in order to implement management and conservation strategies geared towards ecosystem-based approaches [12].…”

Section: Introductionmentioning

confidence: 99%

Rapid Effects of Marine Reserves via Larval Dispersal

2016

Fisheries Management and Conservation

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Section: Introductionmentioning

confidence: 99%

Rapid Effects of Marine Reserves via Larval Dispersal

2016

Fisheries Management and Conservation

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“…For others (e.g., those harvesting cod and saithe), the stock effect is nontrivial and can substantially affect profits (Hannesson 2007). In such cases, prohibitively high harvest costs associated with low stock densities can cause cessation of fishing or shifts in target species (Sala et al 2004;Roberts 2007; but see Essington et al 2006). Current depletion of many fisheries species stocks to <10-20% their original levels (Myers and Worm 2003;Stobutzki et al 2006;Worm et al 2006) marks an upper limit of when this may occur in some modern fisheries (for a discussion of exceptions, see Essington et al 2006;Polacheck 2006).…”

Section: Introductionmentioning

confidence: 99%

Density dependence and the economic efficacy of marine reserves

White

2009

Theor Ecol

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Predictions on the efficacy of marine reserves for benefiting fisheries differ in large part due to considerations of models of either intra-or inter-cohort population density regulating fish recruitment. Here, I consider both processes acting on recruitment and show using a bioeconomic model how for many fisheries density dependent recruitment dynamics interact with harvest costs to influence fishery profit with reserves. Reserves consolidate fishing effort, favoring fisheries that can profitably harvest low-density stocks of species where adult density mediates recruitment. Conversely, proportion coastline in reserves that maximizes profit, and relative improvement in profit from reserves over conventional management, decline with increasing harvest costs and the relative importance of intra-cohort density dependence. Reserves never increase profit when harvest cost is high, regardless of density dependent recruitment dynamics. I quantitatively synthesize diverse results in the literature, show disproportionate effects on the economic performance of reserves from considering only inter-or intra-cohort density dependence, and highlight fish population and fishery dynamics predicted to be complementary to reserve management.

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“…Due to their predictability in both time and space, spawning aggregations of reef fishes are particularly vulnerable to overfishing and thus are primary targets for conservation (Colin et al, 2003;Claydon 2004;Sadovy and Domeier 2005;Sadovy de Mitcheson et al 2008). Leather Bass are not significant components of commercial fisheries in most mainland regions of the eastern Pacific, but they are targeted by artisanal and recreational fisheries at certain (Heemstra and Randall 1993).…”

Section: Discussionmentioning

confidence: 99%

Observations of spawning in the Leather Bass, Dermatolepis dermatolepis (Teleostei: Epinephelidae), at Cocos Island, Costa Rica

Erisman

Konotchick

Blum³

2009

Environ Biol Fish

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Courtship and spawning behavior is described for the Leather Bass, Dermatolepis dermatolepis, from observations made from a manned submersible at Cocos Island, Costa Rica on 19 days between November 2006 and February 2007. Spawning occurred in the evening (16:00-18:30 h) in subgroups of 10-32 individuals that formed within aggregations of 50-70 individuals. The mating sequence was characterized by subgroup formation and crowding behavior followed by a brief vertical spawning rush, gamete release, and the rapid separation of participants. The aggregation was present on all dives, and spawning was not restricted to specific lunar phases.

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Are aggregation-fisheries sustainable? Reef fish fisheries as a case study

Cited by 306 publications

References 33 publications

Rapid Effects of Marine Reserves via Larval Dispersal

Rapid Effects of Marine Reserves via Larval Dispersal

Density dependence and the economic efficacy of marine reserves

Observations of spawning in the Leather Bass, Dermatolepis dermatolepis (Teleostei: Epinephelidae), at Cocos Island, Costa Rica

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