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Investigating the use of plasma testosterone and estradiol-17β to detect ovarian follicular atresia in farmed white sturgeon, Acipenser transmontanus

Identifieur interne : 000745 ( Main/Merge ); précédent : 000744; suivant : 000746

Investigating the use of plasma testosterone and estradiol-17β to detect ovarian follicular atresia in farmed white sturgeon, Acipenser transmontanus

Auteurs : Mariah J. Talbott [États-Unis] ; Joel P. Van Eenennaam [États-Unis] ; Javier Linares-Casenave [États-Unis] ; Serge I. Doroshov [États-Unis] ; Christopher S. Guy [États-Unis] ; Peter Struffenegger [États-Unis] ; Molly A. H. Webb [États-Unis]

Source :

Aquaculture : (Amsterdam) [ 0044-8486 ] ; 2011.

RBID : Pascal:11-0259346

Descripteurs français

Pascal (Inist)
- Plasma sanguin, Atrésie, Stéroïde, Aquiculture, Testostérone, Estradiol, Acipenser transmontanus.
Wicri :
- topic : Aquiculture.

English descriptors

KwdEn :
- Acipenser transmontanus, Aquaculture, Atresia, Blood plasma, Estradiol, Steroid, Testosterone.

Abstract

To improve quality and yield of caviar in farmed white sturgeon it is essential to correctly assess the stage of ovarian maturity and avoid harvesting females with atretic ovarian follicles. To detect atresia by changes in blood plasma sex steroids, individual females (N = 10) in the late phase of oogenesis were repeatedly bled and their ovaries biopsied before and after onset of ovarian atresia. Follicular atresia was induced by transferring females from cold (10-13 °C) to warm water (20 °C). Ovarian follicle diameter increased and oocyte polarization index decreased in sampled fish over time. Plasma testosterone concentrations in fish with normal follicles were significantly higher, compared to fish with early histological signs of follicular atresia, such as structural changes in the chorion. Plasma estradiol concentrations declined to below detection limit prior to histological signs of atresia in 55% of the fish. Ninety five percent of fish with normal ovarian follicles and 93% of fish with atretic ovarian follicles were correctly classified using a discriminant function analysis based upon plasma testosterone concentrations. Logistic regression models were developed to predict the probability of normal ovaries based on plasma concentrations of sex steroids and can be further refined to improve selection of fish with normal ovaries for caviar harvest.

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Pascal:11-0259346

Le document en format XML

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<author><name sortKey="Doroshov, Serge I" sort="Doroshov, Serge I" uniqKey="Doroshov S" first="Serge I." last="Doroshov">Serge I. Doroshov</name>
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</affiliation>
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<author><name sortKey="Webb, Molly A H" sort="Webb, Molly A H" uniqKey="Webb M" first="Molly A. H." last="Webb">Molly A. H. Webb</name>
<affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Bozeman Fish Technology Center, U.S. Fish and Wildlife Service, 4050 Bridger Canyon Rd</s1>
<s2>Bozeman, MT 59715</s2>
<s3>USA</s3>
<sZ>7 aut.</sZ>
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<series><title level="j" type="main">Aquaculture : (Amsterdam)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser transmontanus</term>
<term>Aquaculture</term>
<term>Atresia</term>
<term>Blood plasma</term>
<term>Estradiol</term>
<term>Steroid</term>
<term>Testosterone</term>
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<term>Atrésie</term>
<term>Stéroïde</term>
<term>Aquiculture</term>
<term>Testostérone</term>
<term>Estradiol</term>
<term>Acipenser transmontanus</term>
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<front><div type="abstract" xml:lang="en">To improve quality and yield of caviar in farmed white sturgeon it is essential to correctly assess the stage of ovarian maturity and avoid harvesting females with atretic ovarian follicles. To detect atresia by changes in blood plasma sex steroids, individual females (N = 10) in the late phase of oogenesis were repeatedly bled and their ovaries biopsied before and after onset of ovarian atresia. Follicular atresia was induced by transferring females from cold (10-13 °C) to warm water (20 °C). Ovarian follicle diameter increased and oocyte polarization index decreased in sampled fish over time. Plasma testosterone concentrations in fish with normal follicles were significantly higher, compared to fish with early histological signs of follicular atresia, such as structural changes in the chorion. Plasma estradiol concentrations declined to below detection limit prior to histological signs of atresia in 55% of the fish. Ninety five percent of fish with normal ovarian follicles and 93% of fish with atretic ovarian follicles were correctly classified using a discriminant function analysis based upon plasma testosterone concentrations. Logistic regression models were developed to predict the probability of normal ovaries based on plasma concentrations of sex steroids and can be further refined to improve selection of fish with normal ovaries for caviar harvest.</div>
</front>
</TEI>
<affiliations><list><country><li>États-Unis</li>
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<tree><country name="États-Unis"><region name="Montana"><name sortKey="Talbott, Mariah J" sort="Talbott, Mariah J" uniqKey="Talbott M" first="Mariah J." last="Talbott">Mariah J. Talbott</name>
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<name sortKey="Doroshov, Serge I" sort="Doroshov, Serge I" uniqKey="Doroshov S" first="Serge I." last="Doroshov">Serge I. Doroshov</name>
<name sortKey="Guy, Christopher S" sort="Guy, Christopher S" uniqKey="Guy C" first="Christopher S." last="Guy">Christopher S. Guy</name>
<name sortKey="Linares Casenave, Javier" sort="Linares Casenave, Javier" uniqKey="Linares Casenave J" first="Javier" last="Linares-Casenave">Javier Linares-Casenave</name>
<name sortKey="Struffenegger, Peter" sort="Struffenegger, Peter" uniqKey="Struffenegger P" first="Peter" last="Struffenegger">Peter Struffenegger</name>
<name sortKey="Van Eenennaam, Joel P" sort="Van Eenennaam, Joel P" uniqKey="Van Eenennaam J" first="Joel P." last="Van Eenennaam">Joel P. Van Eenennaam</name>
<name sortKey="Webb, Molly A H" sort="Webb, Molly A H" uniqKey="Webb M" first="Molly A. H." last="Webb">Molly A. H. Webb</name>
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Investigating the use of plasma testosterone and estradiol-17β to detect ovarian follicular atresia in farmed white sturgeon, Acipenser transmontanus

Investigating the use of plasma testosterone and estradiol-17β to detect ovarian follicular atresia in farmed white sturgeon, Acipenser transmontanus

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri