Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

Mollet, Fabian M.; Kraak, Sarah B.M.; Rijnsdorp, A.D.

doi:10.3354/meps07138

Cited by 85 publications

(88 citation statements)

References 44 publications

(68 reference statements)

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“…Among the potential sources of growth-independent plasticity examined, only temperature had a significant effect on female cod maturation; temperature experienced at age 0 had a significant negative effect on female cod L p50 at age 3, in agreement with earlier work (Wright et al 2011b, Neuheimer & Grønkjaer 2012. Previous findings for North Sea plaice and sole have also shown that elevated temperatures may accelerate maturation (Grift et al 2003, Mollet et al 2007). Evidence of short-term temperature effects can also be found in the time series: around the years 1987 to 1989, temperatures exhibited a peak (Fig.…”

Section: Temporal Trends In Pmrnssupporting

confidence: 80%

“…(B) For a positively sloped PMRN approached from below by length-at-age curves, faster growth rates result in younger ages at maturation and smaller sizes at maturation. (C) When length-at-age curves approach the PMRN from above, which is possible for a positively sloped PMRN only, faster growth rates result in older ages at maturation and larger sizes at maturation temporal trend in maturation (Grift et al 2007, Mollet et al 2007). Unfortunately, we could not include such an index in our analyses because individual weights were not available.…”

Section: The Pmrn Approachmentioning

confidence: 99%

“…without influencing growth. Body condition correlates positively with maturation propensity (Marteinsdottir & Begg 2002, Grift et al 2007, Mollet et al 2007, Uusi-Heikkilä et al 2011: ecological factors enhancing body condition, such as food abundance (Siems & Sikes 1998), can therefore trigger trends in maturity ogives. Likewise, elevated temperature accelerates maturation (Dhillon & Fox 2004, Morita et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Temporal trends in age and size at maturation of four North Sea gadid species: cod, haddock, whiting and Norway pout

Marty¹,

Rochet²,

Ernande³

2014

Mar. Ecol. Prog. Ser.

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Younger ages and smaller sizes at maturation have been observed in commercial fish stocks over the last century. We establish that age and length at 50% proportion mature (i.e. the proportion of mature individuals in a population or the probability that an individual is mature) decreased from the 1970s to the 2000s in North Sea cod Gadus morhua, haddock Melanogrammus aeglefinus and whiting Merlangius merlangus, but not in Norway pout Trisopterus esmarkii. The potential contributions of demography, phenotypic plasticity and evolution to these trends were assessed. First, maturation trends were extricated from demographic effects and growth-dependent plasticity by estimating probabilistic maturation reaction norms (PMRNs). PMRN midpoints have significantly shifted downwards at most ages for cod, haddock and whiting, but not for Norway pout. Second, increased temperature and food abundance, loosened trophic competition and relaxed social pressure may also trigger growth-independent plasticity in maturation. Principal component regression of PMRN midpoints on annual estimates of relevant environmental variables exhibiting a temporal trend suggest that, despite some evidence of environmental effects, PMRN trends were mostly independent of growth-independent plasticity in haddock, whiting and male cod, but not in female cod. According to these findings, evolution of maturation, potentially in response to fishing, is plausible in haddock, whiting and male cod, but unlikely for Norway pout, and does not explain trends in female cod maturation. In agreement with life-history theory, the maturation response was larger in fast-growing, late-and large-maturing species exhibiting moderate reproductive effort.

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Section: Temporal Trends In Pmrnssupporting

confidence: 80%

Section: The Pmrn Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporal trends in age and size at maturation of four North Sea gadid species: cod, haddock, whiting and Norway pout

Marty¹,

Rochet²,

Ernande³

2014

Mar. Ecol. Prog. Ser.

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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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“…More recently, a number of empirical studies have estimated probabilistic maturation reaction norms (Heino et al 2002) for numerous fish stocks: these indeed turned out to be domeshaped, or roughly linear, with negative global slopes (Grift et al 2003(Grift et al , 2007Engelhard and Heino 2004;Olsen et al 2004Olsen et al , 2005Barot et al 2005;Mollet et al 2007). Only very few probabilistic maturation reaction norms have been reported to exhibit positive slope (Heino et al 2002) or to be roughly flat (Barot et al 2004).…”

Section: Comparison With Empirical Knowledgementioning

confidence: 99%

Impact of Environmental Covariation in Growth and Mortality on Evolving Maturation Reaction Norms

Marty¹,

Dieckmann²,

Rochet³

et al. 2011

The American Naturalist

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Maturation age and size have important fitness consequences through their effects on survival probabilities and body sizes. The evolution of maturation reaction norms in response to environmental covariation in growth and mortality is therefore a key subject of lifehistory theory. The eco-evolutionary model we present and analyze here incorporates critical features earlier studies of evolving maturation reaction norms have often neglected: the tradeoff between growth and reproduction, source-sink population structure, and population regulation through density-dependent growth and fecundity. We report the following findings.First, the evolutionarily optimal age at maturation can be decomposed into the sum of a density-dependent and a density-independent component. These components measure, respectively, the hypothetical negative age at which an individual's length would be zero and the delay in maturation relative to this offset. Second, along any growth trajectory, individuals mature earlier when mortality is higher. This allows us to deduce, third, how the shapes of evolutionarily optimal maturation reaction norms depend on the covariation between growth and mortality (positive or negative, linear or curvilinear, and deterministic or probabilistic).Providing eco-evolutionary explanations for many alternative reaction-norm shapes, our results appear to be in good agreement with current empirical knowledge on maturation dynamics. Marty et al.Evolving maturation reaction norms 3

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Fisheries-induced evolutionary changes in maturation reaction norms in North Sea sole Solea solea

Cited by 85 publications

References 44 publications

Temporal trends in age and size at maturation of four North Sea gadid species: cod, haddock, whiting and Norway pout

Temporal trends in age and size at maturation of four North Sea gadid species: cod, haddock, whiting and Norway pout

Advances in genomics for flatfish aquaculture

Impact of Environmental Covariation in Growth and Mortality on Evolving Maturation Reaction Norms

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