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We thank our readers, authors, and reviewers for their interest and support. The Journal of Marine Research has published papers on physical, biological, and chemical oceanography vital to the academic oceanographic community for almost 80 years in the long and rich tradition of the Sears Foundation for Marine Research at Yale University. The overall harvest increased annually despite DNR changing regulations before the 2019-2020 oyster seasonfrom 145,332 bushels in 2018-2019 to 332,946 bushels in 2020-2021. Back issues of all volumes since inception are available here and from the publisher's website. All current paid subscriptions will be honored and accessible through March 2022. Therefore, the Journal of Marine Research is no longer accepting manuscript submissions, new subscriptions, or subscription renewals for 2022. We regret to announce that the Journal of Marine Research-one of the oldest peer-reviewed journals in American marine science-will cease publication with Volume 79 as of December 31, 2021. Stable as it is the accumulation of many spat falls per year over many years. These results suggest that N e may be small for a given spat fall, but the entire adult population may have large N e and is temporally Analysis of pooled adult samples across all sites suggests that N eįor the whole bay may be very large, as indicated by the large point estimates and the lack of upper confidence limits. For single sample collections, N e estimates for spat (140–440) were consistently smaller than that for adults (589–2,779). Variable, small and often without upper confidence limits.

N e estimates obtained with five different methods were Comparisons of genetic diversity and relatedness among adult and spat samples failed to provide convincing evidence for strong SRS. Recruits, while the adult populations are spatially homogeneous and temporally stable. Slight genetic differences were revealed by Fst statistics between the adult populations and spat Adult and spat oysters were collected from five locations in different years and genotyped with seven microsatellite markers. To examine if SRS occurs in the eastern oyster, we studied N eĪnd genetic variation of oyster populations in Delaware Bay. Using lab and field studies, this project.

The eastern oyster ( Crassostrea virginica) may be prone to SRS due to its high fecundity and high larval mortality. Changes in the timing and interaction of seasonal high temperatures and low salinity as predicted by climate change models could dramatically alter oyster population dynamics. In a large population may indicate high reproductive variance or sweepstakes reproductive success (SRS). N e estimates for many marine populations are small relative to the census population size. “The introduction of domestic technologies will significantly reduce the cost of oyster production and remove dependence on imports, the conditions of which are constantly changing due to the international political situation for the country,” the scientists said.īesides, it is not always possible for local fish farmers to import foreign oyster spat into Russia since it often fails to meet the country’s veterinary requirements, the scientists said.Effective population size ( N e) is an important concept in population genetics as it dictates the rate of genetic change caused by drift. Ryabushko added that commercial use of their technology would cut the cost of oyster production in Russia, as well as reduce risks of closing companies “due to the changing geopolitical situation.” The survival rate of oysters is about 70 per cent – similar to that at the farms in the Atlantic and Mediterranean,” Ryabushko said.

“Experimental cycles of spat growing in Crimea have shown that if you start the process in mid-spring, then the age at which oysters settle and become suitable for transfer further to grow into mollusks-like-state come about six months later.