Recreational anglers as citizen scientists can provide data to estimate population size of pike, Esox lucius
نویسندگان
چکیده
منابع مشابه
Historical analysis of genetic variation reveals low effective population size in a northern pike (Esox lucius) population.
Effective population size (Ne) of a natural fish population was estimated from temporal changes in allele frequencies at seven microsatellite loci. Use of a historical collection of fish scales made it possible to increase the precision of estimates by increasing the time interval between samples and to use an equation developed for discrete generations without correcting for demographic parame...
متن کاملQuantifying selection differentials caused by recreational fishing: development of modeling framework and application to reproductive investment in pike (Esox lucius)
Methods for quantifying selection pressures on adaptive traits affected by size-selective fishing are still scarce, and none have as yet been developed for recreational fishing. We present an ecologically realistic age-structured model specifically tailored to recreational fishing that allows estimating selection differentials on adaptive life-history traits. The model accounts for multiple eco...
متن کاملThe conservation and fishery benefits of protecting large pike (Esox lucius L.) by harvest regulations in recreational fishing
Traditional fisheries management theory supports aggressive exploitation of old and large fish to maximize a stock’s biomass production and yield. Here we present an age-structured fish population model with multidimensional density-dependence to test the hypotheses that protection of large, fecund individuals is beneficial for the population and selected fisheries variables and that effects of...
متن کاملresponses to ultraviolet radiation in larval pike , Esox lucius , of two origins and ages
Ultraviolet radiation (UVR)-induced mortality and behavioural disorder were studied in larval northern pike of two origins and ages. Newly hatched larvae of two differently coloured populations and six-day-old larvae of one population were exposed to four fluence rates of UVR, resulting in total doses from 11.5 to 63 kJ m–2, and monitored for mortality and behaviour. The rate of mortality and t...
متن کاملGenetic structure of pike (Esox lucius) reveals a complex and previously unrecognized colonization history of Ireland
AIM We investigated genetic variation of Irish pike populations and their relationship with European outgroups, in order to elucidate the origin of this species to the island, which is largely assumed to have occurred as a human-mediated introduction over the past few hundred years. We aimed thereby to provide new insights into population structure to improve fisheries and biodiversity manageme...
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ژورنال
عنوان ژورنال: Fisheries Management and Ecology
سال: 2020
ISSN: 0969-997X,1365-2400
DOI: 10.1111/fme.12419