Gynogenesis and sex determination in shortnose sturgeon, Acipenser brevirostrum Lesuere
Identifieur interne : 000221 ( PascalFrancis/Corpus ); précédent : 000220; suivant : 000222Gynogenesis and sex determination in shortnose sturgeon, Acipenser brevirostrum Lesuere
Auteurs : S. R. Flynn ; M. Matsuoka ; M. Reith ; D. J. Martin-Robichaud ; T. J. BenfeySource :
- Aquaculture : (Amsterdam) [ 0044-8486 ] ; 2006.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We used uniparental maternal inheritance (i.e., gynogenesis) to study the genetic basis of sex determination in shortnose sturgeon as a critical step in developing sex control strategies to maximize caviar production in aquaculture. Sperm cells were exposed to ultraviolet light (UV) at dosages of 180-330 mJ/cm2 to prevent post-activation incorporation of the paternal genome. Zygotes created using normal eggs activated with UV-treated sperm were then subjected to a 5 min pressure treatment at 8500 psi, beginning at 20 min post-activation, in order to retain the second polar body and thereby restore diploidy. Flow cytometry and microsatellite DNA analysis were used to demonstrate diploidy and the lack of paternal inheritance, respectively, in approximately 95% of the surviving fish at one year of age, confirming them to be gynogenetic diploids. An observed sex ratio of 35% male: 65% female in the same population of fish is consistent with female not being the homogametic sex in this species.
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Format Inist (serveur)
NO : | PASCAL 06-0194859 INIST |
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ET : | Gynogenesis and sex determination in shortnose sturgeon, Acipenser brevirostrum Lesuere |
AU : | FLYNN (S. R.); MATSUOKA (M.); REITH (M.); MARTIN-ROBICHAUD (D. J.); BENFEY (T. J.) |
AF : | Department of Biology, University of New Brunswick, P.O. Box 4400/Fredericton, New Brunswick, E3B 5A3/Canada (1 aut., 5 aut.); Institute of Marine Biosciences, National Research Council of Canada, 1411 Oxford Street/Halifax, Nova Scotia, B3H 3Z1/Canada (2 aut., 3 aut.); St. Andrews Biological Station, Fisheries and Oceans Canada, 531 Brandy Cove Road/St. Andrews, New Brunswick, E5B 2L9/Canada (4 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Aquaculture : (Amsterdam); ISSN 0044-8486; Coden AQCLAL; Pays-Bas; Da. 2006; Vol. 253; No. 1-4; Pp. 721-727; Bibl. 16 ref. |
LA : | Anglais |
EA : | We used uniparental maternal inheritance (i.e., gynogenesis) to study the genetic basis of sex determination in shortnose sturgeon as a critical step in developing sex control strategies to maximize caviar production in aquaculture. Sperm cells were exposed to ultraviolet light (UV) at dosages of 180-330 mJ/cm2 to prevent post-activation incorporation of the paternal genome. Zygotes created using normal eggs activated with UV-treated sperm were then subjected to a 5 min pressure treatment at 8500 psi, beginning at 20 min post-activation, in order to retain the second polar body and thereby restore diploidy. Flow cytometry and microsatellite DNA analysis were used to demonstrate diploidy and the lack of paternal inheritance, respectively, in approximately 95% of the surviving fish at one year of age, confirming them to be gynogenetic diploids. An observed sex ratio of 35% male: 65% female in the same population of fish is consistent with female not being the homogametic sex in this species. |
CC : | 002A36B01; 002A15B |
FD : | Gynogenèse; Déterminisme sexe; Sexe; Aquiculture; Acipenser sturio |
FG : | Pisces; Vertebrata; Acipenseridae |
ED : | Gynogenesis; Sex determination; Sex; Aquaculture; Acipenser sturio |
EG : | Pisces; Vertebrata |
SD : | Ginogénesis; Determinismo sexo; Sexo; Acuacultura; Acipenser sturio |
LO : | INIST-15964.354000132492150810 |
ID : | 06-0194859 |
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Pascal:06-0194859Le document en format XML
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<front><div type="abstract" xml:lang="en">We used uniparental maternal inheritance (i.e., gynogenesis) to study the genetic basis of sex determination in shortnose sturgeon as a critical step in developing sex control strategies to maximize caviar production in aquaculture. Sperm cells were exposed to ultraviolet light (UV) at dosages of 180-330 mJ/cm<sup>2</sup>
to prevent post-activation incorporation of the paternal genome. Zygotes created using normal eggs activated with UV-treated sperm were then subjected to a 5 min pressure treatment at 8500 psi, beginning at 20 min post-activation, in order to retain the second polar body and thereby restore diploidy. Flow cytometry and microsatellite DNA analysis were used to demonstrate diploidy and the lack of paternal inheritance, respectively, in approximately 95% of the surviving fish at one year of age, confirming them to be gynogenetic diploids. An observed sex ratio of 35% male: 65% female in the same population of fish is consistent with female not being the homogametic sex in this species.</div>
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<ET>Gynogenesis and sex determination in shortnose sturgeon, Acipenser brevirostrum Lesuere</ET>
<AU>FLYNN (S. R.); MATSUOKA (M.); REITH (M.); MARTIN-ROBICHAUD (D. J.); BENFEY (T. J.)</AU>
<AF>Department of Biology, University of New Brunswick, P.O. Box 4400/Fredericton, New Brunswick, E3B 5A3/Canada (1 aut., 5 aut.); Institute of Marine Biosciences, National Research Council of Canada, 1411 Oxford Street/Halifax, Nova Scotia, B3H 3Z1/Canada (2 aut., 3 aut.); St. Andrews Biological Station, Fisheries and Oceans Canada, 531 Brandy Cove Road/St. Andrews, New Brunswick, E5B 2L9/Canada (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
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<LA>Anglais</LA>
<EA>We used uniparental maternal inheritance (i.e., gynogenesis) to study the genetic basis of sex determination in shortnose sturgeon as a critical step in developing sex control strategies to maximize caviar production in aquaculture. Sperm cells were exposed to ultraviolet light (UV) at dosages of 180-330 mJ/cm<sup>2</sup>
to prevent post-activation incorporation of the paternal genome. Zygotes created using normal eggs activated with UV-treated sperm were then subjected to a 5 min pressure treatment at 8500 psi, beginning at 20 min post-activation, in order to retain the second polar body and thereby restore diploidy. Flow cytometry and microsatellite DNA analysis were used to demonstrate diploidy and the lack of paternal inheritance, respectively, in approximately 95% of the surviving fish at one year of age, confirming them to be gynogenetic diploids. An observed sex ratio of 35% male: 65% female in the same population of fish is consistent with female not being the homogametic sex in this species.</EA>
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