10.5061/DRYAD.4PG1VV4
Kitada, Shuichi
University of Tokyo
Nakajima, Kaori
University of Tokyo
Hamasaki, Katsuyuki
University of Tokyo
Shishidou, Hirotoshi
Kagoshima Prefectural Fisheries Technology and Development Center,
Kagoshima, Japan
Waples, Robin S.
Northwest Fisheries Science Center
Kishino, Hirohisa
University of Tokyo
Data from: Rigorous monitoring of a large-scale marine stock enhancement
program demonstrates the need for comprehensive management of fisheries
and nursery habitat
Dryad
dataset
2019
Aquaculture
artificial propagation
genetic effects
Pagrus major
fishery
2019-03-28T16:58:44Z
2019-03-28T16:58:44Z
en
https://doi.org/10.1038/s41598-019-39050-3
32530 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Release of captively-bred individuals into the wild is one of the most
popular tools in fisheries, forestry, and wildlife management, and
introgression of hatchery-reared animals into wild populations is of
global concern. However, research and monitoring of impacts on wild
populations are generally lacking, and the benefit of hatcheries for
long-term fisheries and conservation goals is unclear. Using
spatio-temporal genetic monitoring and a four-dacade time series of catch
data, we quantified the effects on the size and genetic diversity of wild
populations of one of the world’s largest marine stock enhancement
programs--the red sea bream (Pagrus major) in Kagoshima Bay, Japan. Our
analyses found that the stock enhancement program reduced genetic
diversity of the population, but the genetic effect diminished with
increased size of the wild population. Increases to the seaweed
communities and reduced fishing efforts were the primary factors
associated with the wild population recovery; effects of aquaculture were
much smaller. Our results represent crucial evidence that hatcheries for
enhancement and conservation of populations cannot be successful over the
long term unless sufficient efforts are also made to reduce harvest rates
and rehabilitate natural habitats.
Bream_genepop_datThis Genepop format file includes genotypes for 8 samples
totalling 642 red sea bream (Pagrus major) from six geographical regions
collected between 2002 and 2011 (497 wild, 45 hatchery, and 100 farmed
fish).RedSeaBream_genepop_dat.txt
Japan