Genomic differentiation and selection signatures of two elite varieties of Yesso scallop Mizuhopecten yessoensis

Aquaculture ◽  
2021 ◽  
pp. 737842
Author(s):  
Jia Lv ◽  
Yantong Cai ◽  
Pingping Liu ◽  
Xiaowen Huang ◽  
Zhenli Lv ◽  
...  
Keyword(s):  
Selection Signatures ◽  
Mizuhopecten Yessoensis ◽  
Yesso Scallop

scholarly journals Dynamics of stock for yesso scallop Mizuhopecten yessoensis (Jay, 1856) in the northwestern Tatar Strait from the beginning of its fishery to nowadays

2021 ◽  
Vol 201 (3) ◽  
pp. 533-546
Author(s):  
P. A. Dulenina ◽  
A. A. Dulenin
Keyword(s):  
Shell Height ◽  
Mizuhopecten Yessoensis ◽  
Tatar Strait ◽  
Yesso Scallop ◽  
The Mean ◽  
Commercial Value ◽  
Northwestern Tatar Strait ◽  
Commercial Stock

Settlements of yesso scallop Mizuhopecten yessoensis in the northwestern Tatar Strait (within the waters of Khabarovsk Region) are considered on the data of scuba (< 20 m depth) and dredge (> 20 m depth) surveys conducted in 2001–2018. To 2018, only two settlements remain in this area from 9–12 ones in 2010–2014; both remained settlements have no commercial value. Trend to decreasing of the settlements density is shown: the mean density was 3.0 ind./m2 in 2001, 0.20 ind./m2 in 2010, and 0.0005 ind./m2 in 2018. Commercially valuable scallops with the shell height > 120 mm prevailed in the settlements (86–100 %), whereas juveniles were rare or absent (1.6 %, on average) in all years of surveys. CPUE decreased from 200 kg/diver/hour in 2001–2003 to 10 kg/diver/hour in 2018. These changes are obviously reasoned by overexploitation of the population using dredging and scuba gathering. Total commercial stock of yesso scallop dropped to the minimal value in 2018: 200 t, that was in 4.5 times lower than the established limit. Thus, 5 years ban is established for M. yessoensis landing in the area.

scholarly journals Study on the growth rates of mollusks in hanging culture in Possjet Bay (Sea of Japan)

2020 ◽  
Vol 24 (1/2) ◽  
pp. 67-81
Author(s):  
Nina I. Grigoryeva
Keyword(s):  
Growth Rate ◽  
Sea Of Japan ◽  
Growth Rates ◽  
Crassostrea Gigas ◽  
Blue Mussel ◽  
Peter The Great Bay ◽  
Mytilus Trossulus ◽  
Mizuhopecten Yessoensis ◽  
Yesso Scallop ◽  
Mussel Mytilus Trossulus

Исследована скорость роста культивируемых моллюсков подвесного выращивания в зал. Посьета (зал. Петра Великого, Японское море) за 1970–2011 гг. Приведены ростовые характеристики приморского гребешка (Mizuhopecten yessoensis (Jay, 1857)), тихоокеанской мидии (Mytilus trossulus Gould, 1850) и тихоокеанской (гигантской) устрицы (Crassostrea gigas (Thunberg, 1793)) в течение первых трех лет развития. Методами энтропийного анализа исследованы сроки достижения личинками и спатом определенных размеров. Выявлены временные интервалы и рассчитана вероятность наступления этих сроков. Обсуждается влияние техники культивирования на скорость роста. Ключевые слова: скорость роста, личинки, спат, приморский гребешок Mizuhopecten yessoensis, тихоокеанская мидия Mytilus trossulus, тихоокеанская устрица Crassostrea gigas, залив Посьета, Японское море. The growth rates of cultivated mollusks were studied in Possjet Bay (Peter the Great Bay, Sea of Japan) during 1970–2011. The growth characteristics were presented for the Yesso scallop (Mizuhopecten yessoensis (Jay, 1857)), the blue mussel (Mytilus trossulus Gould, 1850), and the Pacific (giant) oyster (Crassostrea gigas (Thunberg, 1793)) during the first three years of life. The average amount of time of the larvae and spat reaching certain sizes was determined using the method of entropy analysis. The time intervals were identified and the probability of these intervals to happen were also calculated. The influence of the cultivation techniques on the growth rate is discussed. Key words: growth rate, larvae, spat, Yesso scallop Mizuhopecten yessoensis, blue mussel Mytilus trossulus, Pacific oyster Crassostrea gigas, Possjet Bay, Sea of Japan.

Characterization of novel microsatellite markers from the Yesso scallop Mizuhopecten yessoensis

2006 ◽  
Vol 7 (1) ◽  
pp. 106-108 ◽  
Author(s):  
CHANGSEN SUN ◽  
AIBIN ZHAN ◽  
MIN HUI ◽  
WEI LU ◽  
XIAOLI HU ◽  
...  
Keyword(s):  
Microsatellite Markers ◽  
Mizuhopecten Yessoensis ◽  
Yesso Scallop

scholarly journals Transcriptomics analysis revealing candidate genes and networks for sex differentiation of Yesso scallop(Patinopecten yessoensis)

2019 ◽  
Author(s):  
Liqing Zhou ◽  
Zhihong Liu ◽  
Yinghui Dong ◽  
Xiujun Sun ◽  
Biao Wu ◽  
...  
Keyword(s):  
Sex Determination ◽  
Candidate Genes ◽  
Developmental Stages ◽  
Sex Differentiation ◽  
Northeast Asia ◽  
Gonadal Development ◽  
Patinopecten Yessoensis ◽  
Mizuhopecten Yessoensis ◽  
Kegg Pathways ◽  
Yesso Scallop

Abstract Background:The Yesso scallop, Patinopecten (Mizuhopecten) yessoensis, is a commercially important bivalve in the coastal countries of Northeast Asia. It has complex modes of sex differentiation, but knowledge of the mechanisms underlying this sex determination and differentiation is limited. Results:In this study, the gonad tissues from females and males at three developmental stages were used to investigate candidate genes and networks for sex differentiation via RNA-Req. A total of 901,980,606 high quality clean reads were obtained from 18 libraries, of which 417 expressed male-specific genes and 754 expressed female-specific genes. Totally, 10,074 genes differentially expressed in females and males were identified. Weighted gene co-expression network analysis (WGCNA) revealed that turquoise and green gene modules were significantly positively correlated with male gonads, while coral1 and black modules were significantly associated with female gonads. The most important gene for sex determination and differentiation was Pydmrt1, which was the only gene discovered that determined the male sex phenotype during early gonadal differentiation. Enrichment analyses of GO terms and KEGG pathways revealed that genes involved in metabolism, genetic and environmental information processes or pathways are sex-biased. Forty-nine genes in the five modules involved in sex differentiation or determination were identified and selected to construct a gene co-expression network and a hypothesized sex differentiation pathway. Conclusions: The current study focused on screening genes of sex differentiation in Yesso scallop, highlighting the potential regulatory mechanisms of gonadal development in P. yessoensis. Our data suggested that WCGNA can facilitate identification of key genes for sex differentiation and determination. Using this method, a hypothesized P. yessoensis sex determination and differentiation pathway was constructed. In this pathway, Pydmrt1 may have a leading function.

scholarly journals Transcriptomics analysis revealing candidate genes and networks for sex differentiation of Yesso scallop(Patinopecten yessoensis)

2019 ◽  
Author(s):  
Liqing Zhou ◽  
Zhihong Liu ◽  
Yinghui Dong ◽  
Xiujun Sun ◽  
Biao Wu ◽  
...  
Keyword(s):  
Sex Determination ◽  
Candidate Genes ◽  
Developmental Stages ◽  
Sex Differentiation ◽  
Northeast Asia ◽  
Gonadal Development ◽  
Patinopecten Yessoensis ◽  
Mizuhopecten Yessoensis ◽  
Kegg Pathways ◽  
Yesso Scallop

Abstract Background:The Yesso scallop, Patinopecten (Mizuhopecten) yessoensis, is a commercially important bivalve in the coastal countries of Northeast Asia. It has complex modes of sex differentiation, but knowledge of the mechanisms underlying this sex determination and differentiation is limited. Results:In this study, the gonad tissues from females and males at three developmental stages were used to investigate candidate genes and networks for sex differentiation via RNA-Req. A total of 901,980,606 high quality clean reads were obtained from 18 libraries, of which 417 expressed male-specific genes and 754 expressed female-specific genes. Totally, 10,074 genes differentially expressed in females and males were identified. Weighted gene co-expression network analysis (WGCNA) revealed that turquoise and green gene modules were significantly positively correlated with male gonads, while coral1 and black modules were significantly associated with female gonads. The most important gene for sex determination and differentiation was Pydmrt1, which was the only gene discovered that determined the male sex phenotype during early gonadal differentiation. Enrichment analyses of GO terms and KEGG pathways revealed that genes involved in metabolism, genetic and environmental information processes or pathways are sex-biased. Forty-nine genes in the five modules involved in sex differentiation or determination were identified and selected to construct a gene co-expression network and a hypothesized sex differentiation pathway. Conclusions: The current study focused on screening genes of sex differentiation in Yesso scallop, highlighting the potential regulatory mechanisms of gonadal development in P. yessoensis. Our data suggested that WCGNA can facilitate identification of key genes for sex differentiation and determination. Using this method, a hypothesized P. yessoensis sex determination and differentiation pathway was constructed. In this pathway, Pydmrt1 may have a leading function.

scholarly journals Phenotypic Stability of Sex and Expression of Sex Identification Markers in the Adult Yesso Scallop Mizuhopecten yessoensis throughout the Reproductive Cycle

Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 277 ◽  
Author(s):  
Kazue Nagasawa ◽  
Tongchai Thitiphuree ◽  
Makoto Osada
Keyword(s):  
Molecular Markers ◽  
Sex Differentiation ◽  
Gonad Development ◽  
Reproductive Period ◽  
Sex Identification ◽  
Bivalve Species ◽  
Phenotypic Stability ◽  
Mizuhopecten Yessoensis ◽  
Molecular Analyses ◽  
Yesso Scallop

The objective of the present study was to analyze the phenotypic stability of sex after sex differentiation in the Yesso scallop, which is a gonochoristic species that has been described as protandrous. So far, no study has investigated in detail the sexual fate of the scallop after completion of sex differentiation, although bivalve species often show annual sex change. In the present study, we performed a tracking experiment to analyze the phenotypic stability of sex in scallops between one and two years of age. We also conducted molecular marker analyses to describe sex differentiation and gonad development. The results of the tracking experiment revealed that all scallops maintained their initial sex phenotype, as identified in the last reproductive period. Using molecular analyses, we characterized my-dmrt2 and my-foxl2 as sex identification markers for the testis and ovary, respectively. We conclude by proposing that the Yesso scallop is a sex-stable bivalve after its initial sex differentiation and that it maintains a sex-stable maturation system throughout its life. The sex-specific molecular markers identified in this study are useful tools to assess the reproductive status of the Yesso scallop.

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