Can fisheries-induced evolution shift reference points for fisheries management?

Avoidance of fisheries-induced evolution: management implications for catch selectivity and limit reference points

I examined how the fitness (r) associated with early- and late-maturing genotypes varies with fishing mortality (F) and age-/size-specific probability of capture. Life-history data on Newfoundland's northern Atlantic cod (Gadus morhua) allowed for the estimation of r for individuals maturing at 4 and 7 year in the absence of fishing. Catch selectivity data associated with four types of fishing ...

Fisheries-Induced Evolution

Modern fisheries have drastically changed the level and size dependence of mortality faced by fish populations: commercial fishing usually targets medium-sized and large individuals, which often are relatively invulnerable to natural predators. Life-history theory predicts that fish adapt to these changes through evolutionary alterations in their life histories. Experiments and models predict t...

Can fisheries management be quantified?

Policy efforts to reduce fisheries impact have often created micro-management. Detailed regulations are restricting the fishing industry, and are also acknowledged to limit the progress towards sustainable management. Industry representatives, political bodies and scientists have therefore argued for more simplicity and transparency. Here, fisheries management is quantified in terms of trends i...

What can selection experiments teach us about fisheries - induced evolution ?

Risk management for fisheries

Introduction 342 Risk, risk management and the fisheries context 343 Survey of risk management strategies in use or applicable to fisheries 345 Identify and analyse risk: decision analysis and risk assessment 345 Multicriteria decision making 347 Multiple objective optimization 348 Decision aids 348 Scenario planning and maps 349 Dynamic risk management: option value and adaptive management 349...