Fisheries-induced evolution in growth, maturation and reproductive investment of the sexually dimorphic North Sea plaice (Pleuronectes platessa L.)

Walraven, Lodewijk van; Mollet, Fabian M.; Damme, C.J.G. van; Rijnsdorp, A.D.

doi:10.1016/j.seares.2009.07.003

Cited by 57 publications

(38 citation statements)

References 51 publications

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“…Linear regressions of the median changepoint estimates against cohort gave significant negative slopes of 0.07 cohort −1 for females and 0.06 cohort −1 for males, which would suggest an overall reduction in the age at first maturity of 1.3 yr in females and 1.1 yr in males over the 18 yr period from 1988 to 2005. The direction of this shift is consistent with studies of plaice in the North Sea which, using the PMRN approach, have also detected a significant reduction in the age at first maturity (van Walraven et al 2010). However, the scale of the reduction detected here is greater than that found in other studies.…”

Section: Resultssupporting

confidence: 90%

“…A number of recent studies have drawn attention to the potential for evolutionary changes in life-history traits as a consequence of the size-selective process of fishing (Rijnsdorp 1993, Law 2000, Heino et al 2002a, and evidence of so-called fisheries-induced evolution has been reported for a number of different species (Grift et al 2003, Jørgensen et al 2007, van Walraven et al 2010. Most studies of fisheriesinduced evolution have focused on changes in sexual maturation, using the probabilistic maturation reaction norm (PMRN) method developed by Heino et al (2002b).…”

Section: Introductionmentioning

confidence: 99%

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Estimating age at first maturity in fish from change-points in growth rate

Rd¹,

Heikkonen²

2012

Mar. Ecol. Prog. Ser.

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Recent studies have drawn attention to the potential for evolutionary changes in lifehistory traits as a consequence of the size-selective process of fishing, and evidence of so-called fisheries-induced evolution has been reported for a number of different species. Most studies of fisheries-induced evolution have focused on changes in sexual maturation using the probabilistic maturation reaction norm method, which requires specific information on the age at which maturation occurs, often derived from macroscopic examination of the gonads. In the absence of sufficiently detailed measurements of maturity it is necessary to derive estimates of the age at which maturation occurs from alternative sources of information, for example, from length at age data. We apply a relatively simple segmented regression model to length at age data for plaice Pleuronectes platessa in the Irish Sea in order to identify the change-point between 2 specific growth schedules that can be used as a proxy for age at first maturity in individual cohorts. We use a Bayesian approach for model fitting and map the resulting distribution of change-points using Gaussian mixture models to show that the age at which the change-point occurred in individual cohorts of both male and female plaice in the Irish Sea has declined progressively over an 18 yr period between 1988 and 2005.KEY WORDS: Plaice · Maturation · Segmented regression · Reaction norm · Genetic adaptation · Phenotypic plasticity 450: 147-157, 2012 ated with reproduction, such as (1) competition for resources required for reproduction, e.g. competition for mates or nest sites; (2) the amount of space within the body cavity that can be allocated to reproductive organs; and (3) the costs of locomotion. In all 3 instances, individuals that become reproductive at a larger size might be expected to have a reduced sizespecific cost of reproduction. A life-history strategy of delayed maturation allowing for increased growth might therefore be considered optimal in terms of maximising reproductive potential, but this must be offset against competing processes such as the predation risk of foraging that might favour an alternative strategy of reduced growth and earlier maturation (Mangel & Stamps 2001). A trade-off therefore exists in the adoption of specific life-history traits that maximise reproductive potential given the competing objectives of increased growth, reduced mortality and reproductive investment. The age at which first maturity occurs is a reflection of the strategic approach that a given species takes to this trade-off and will be highly correlated with other life-history traits, such as growth rate and maximum size. Resale or republication not permitted without written consent of the publisherMar Ecol Prog SerA number of recent studies have drawn attention to the potential for evolutionary changes in life-history traits as a consequence of the size-selective process of fishing (Rijnsdorp 1993, Law 2000, Heino et al. 2002a, and evidence of so-called fisheries-induce...

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Estimating age at first maturity in fish from change-points in growth rate

Rd¹,

Heikkonen²

2012

Mar. Ecol. Prog. Ser.

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“…In North Sea plaice, FIE has been reported in the onset of maturation, reproductive investment, and growth rate (Rijnsdorp 1993a;Rijnsdorp et al 2005;van Walraven et al 2010). We use an ecogenetic model according to Dunlop et al (2009), calibrated for North Sea plaice (Mollet 2010), to estimate the evolutionary effects of current management and to explore management scenarios aimed at mitigating these evolutionary effects.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary impact assessment of the North Sea plaice fishery

Mollet

Poos

Dieckmann

et al. 2016

Can. J. Fish. Aquat. Sci.

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There is growing evidence that fishing causes evolution in life-history traits that affect the productivity of fish stocks. Here we explore the impact of fisheries-induced evolution (FIE) on the productivity of North Sea plaice (Pleuronectes platessa) using an ecogenetic, individual-based model by comparing management scenarios with and without an evolutionary response. Under status-quo management, plaice evolve towards smaller size at age, earlier maturation, and higher reproductive investment. Current reference points of maximum sustainable yield (MSY) and corresponding fishing-mortality rate (F MSY ) that ignore FIE will decrease and cannot be considered sustainable. The nature and extent of the change through FIE depend on fishing effort and selectivity. The adverse evolutionary effects can be reduced -and even reversed -by implementing a dome-shaped exploitation pattern protecting the large fish. The evolutionarily sustainable maximum yield can be obtained by combining such a dome-shaped exploitation pattern with a reduction in fishing mortality and an increase in mesh size; it is similar to the MSY that would apply if life-history traits were static. Fisheries managers will need to trade off the short-term loss in yield associated with evolutionarily informed management with the long-term loss in yield FIE causes under evolutionarily uninformed management.Résumé : Il apparaît de plus en plus clair que la pêche causerait l'évolution de caractères du cycle biologique qui ont une incidence sur la productivité des stocks de poi ssons. Nous examinons l'incidence de l'évolution induite par la pêche (EIP) sur la pr oductivité des plies (Pleuronectes platessa) de la mer du Nord à l'aide d'un modèle écogénétique basé sur l'individu, en comparant des scénarios de gestion avec et sans réaction évol utive. Dans une gestion en mode statu quo, les plies évoluent vers de plus faibles tailles selon l'âge, une maturation plus pr écoce et un investissement accru dans la reproduction. Les points de référence actuels du rendement équilibré maximal (REM) et du taux de mortalité par pêche correspondant (F REM ) qui ne tiennent pas compte de l'EIP sont appelés à diminuer et ne peuvent être considérés comme durables. La nature et l'ampleur des changements découlant de l'EIP dépendent de l'effort de pêche et de sa sélectivité. Les effets a dverses sur l'évolution peuvent être réduits, voire inversés, en appliquant une courbe d'exploitation en forme de dôme, qui protège les poissons de grande taille. Le REM durable au vu de l'évolution peut être obtenu en combinant une telle courbe d'exploitation à une réduction de la mortalité par pêche et une augmentation de la taille des mailles des filets; ce rendement est semblable au rendement équil ibré maximal qui s'appliquerait si les caractères du cycle biologique étaient statiques. Les gestionnaires des pêches devront soupeser les conséquences relatives de la réduction du rendement à court terme associée à une ge stion tenant compte de l'évolution et de la réduction du rendemen...

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“…However, due to their economic importance, increased fishing pressure has resulted in a drastic drop of flatfish landings with some difficulties to meet the current demands (ICES 2008). Also, overexploitation of wild stocks has reduced genetic diversity in plaice (Hoarau et al 2005), and is thought to underlie modified life-history traits with a shift towards earlier sexual maturation at smaller size in sole and plaice (Mollet et al 2007;van Walraven et al 2010). As a consequence, the development of aquaculture for some of these species has been proposed to supplement the demands for human consumption while reducing the pressure on natural populations.…”

Section: The Aquaculture Of Flatfishmentioning

confidence: 99%

Advances in genomics for flatfish aquaculture

Cerdà

Manchado

2012

Genes Nutr

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Fish aquaculture is considered to be one of the most sustainable sources of protein for humans. Many different species are cultured worldwide, but among them, marine flatfishes comprise a group of teleosts of high commercial interest because of their highly prized white flesh. However, the aquaculture of these fishes is seriously hampered by the scarce knowledge on their biology. In recent years, various experimental 'omics' approaches have been applied to farmed flatfishes to increment the genomic resources available. These tools are beginning to identify genetic markers associated with traits of commercial interest, and to unravel the molecular basis of different physiological processes. This article summarizes recent advances in flatfish genomics research in Europe. We focus on the new generation sequencing technologies, which can produce a massive amount of DNA sequencing data, and discuss their potentials and applications for de novo genome sequencing and transcriptome analysis. The relevance of these methods in nutrigenomics and foodomics approaches for the production of healthy animals, as well as high quality and safety products for the consumer, is also briefly discussed.

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Fisheries-induced evolution in growth, maturation and reproductive investment of the sexually dimorphic North Sea plaice (Pleuronectes platessa L.)

Cited by 57 publications

References 51 publications

Estimating age at first maturity in fish from change-points in growth rate

Estimating age at first maturity in fish from change-points in growth rate

Evolutionary impact assessment of the North Sea plaice fishery

Advances in genomics for flatfish aquaculture

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