Growth changes in plaice, cod, haddock and saithe in the North Sea: a comparison of (post-)medieval and present-day growth rates based on otolith measurements

Bolle, L.J.; Rijnsdorp, A.D.; Neer, Wim Van; Millner, Richard S.; Leeuwen, P.I. van; Ervynck, Anton; Ayers, Richard A.; Ongenae, Ellen

doi:10.1016/j.seares.2004.01.001

Cited by 36 publications

(33 citation statements)

References 37 publications

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“…For North Sea plaice, such density dependence is only important on the nursery grounds for fish smaller than 25 cm (Bolle et al 2004;Rijnsdorp and Van Beek 1991); therefore, the energy acquisition of these fish depends on their total biomass B: …”

Section: Growthmentioning

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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Section: Growthmentioning

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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“…However, it is also possible to reconstruct historic fishing patterns and pre-fishing growth rates using fossil otoliths. In one such study, the recent growth rates of four commercially fished species were compared with the growth rates of several hundred years ago, based on archaeological excavations of otoliths from European fishing communities at a time when overall fishing effort was minimal (Bolle et al 2004). Somewhat surprisingly, not all of the species showed large increases in growth rate as a result of heavy exploitation.…”

Section: Fossils (<1% Of Recent Papers)mentioning

confidence: 99%

Otolith science entering the 21st century

Campana¹

2005

Mar. Freshwater Res.

264

177

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A review of 862 otolith-oriented papers published since the time of the 1998 Otolith Symposium in Bergen, Norway suggests that there has been a change in research emphasis compared to earlier years. Although close to 40% of the papers could be classifed as 'annual age and growth' studies, the remaining papers were roughly equally divided between studies of otolith microstructure, otolith chemistry and non-ageing applications. A more detailed breakdown of subject areas identified 15 diverse areas of specialisation, including age determination, larval fish ecology, population dynamics, species identification, tracer applications and environmental reconstructions. For each of the 15 subject areas, examples of representative studies published in the last 6 years were presented, with emphasis on the major developments and highlights. Among the challenges for the future awaiting resolution, the development of novel methods for validating the ages of deepsea fishes, the development of a physiologicallybased otolith growth model, and the identification of the limits (if any) of ageing very old fish are among the most pressing.

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“…Future analyses of these subfossil cod otoliths may identify a correlation between age and size, and the seasonality of cod growth, thus adding information on estimates of growth rates of the Stone Age cod. These rates and seasonal patterns could be compared with those observed in recent decades and during the post-Medieval period (van Neer et al, 1998;Bolle et al, 2004).…”

Section: Cod and Stone Age Climatementioning

confidence: 99%