Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids
Sex and stage of gonad maturity in 6year-old sturgeon hybrids (Acipenser naccarii female×Acipenser baerii male) were examined by means of ultrasonography, histology and sex steroid analyses during the reproductive season. Ultrasound images of gonads revealed male and female sturgeons at different st...
Published in: | Journal of Applied Ichthyology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Blackwell Wissenschafts-Verlag:Kurfuerstendamm 57, D-10707 Berlin Germany:011 49 30 32790634, EMAIL: customerservice@blackwell.de, INTERNET: http://www.blackwell.de, Fax: 011 49 30 327906922
2011
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Online Access: | http://hdl.handle.net/11577/150547 https://doi.org/10.1111/j.1439-0426.2011.01715.x |
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ftunivpadovairis:oai:www.research.unipd.it:11577/150547 2024-04-21T07:43:29+00:00 Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids PETOCHI T DI MARCO P DONADELLI V LONGOBARDI A CORSALINI I FINOIA M. G AND MARINO G. BERTOTTO, DANIELA Petochi, T DI MARCO, P Donadelli, V Longobardi, A Corsalini, I Bertotto, Daniela Finoia, M. G. AND MARINO, G. 2011 http://hdl.handle.net/11577/150547 https://doi.org/10.1111/j.1439-0426.2011.01715.x eng eng Blackwell Wissenschafts-Verlag:Kurfuerstendamm 57, D-10707 Berlin Germany:011 49 30 32790634, EMAIL: customerservice@blackwell.de, INTERNET: http://www.blackwell.de, Fax: 011 49 30 327906922 info:eu-repo/semantics/altIdentifier/wos/WOS:000288864600079 volume:27 firstpage:637 lastpage:642 numberofpages:6 journal:JOURNAL OF APPLIED ICHTHYOLOGY http://hdl.handle.net/11577/150547 doi:10.1111/j.1439-0426.2011.01715.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79953091786 info:eu-repo/semantics/article 2011 ftunivpadovairis https://doi.org/10.1111/j.1439-0426.2011.01715.x 2024-03-28T01:28:15Z Sex and stage of gonad maturity in 6year-old sturgeon hybrids (Acipenser naccarii female×Acipenser baerii male) were examined by means of ultrasonography, histology and sex steroid analyses during the reproductive season. Ultrasound images of gonads revealed male and female sturgeons at different stages of maturity, distinguished by gonad morphology and tissue echogenicity. Sexing and staging were found to be more difficult in immature fish, especially males, and ultrasounds were combined with sex steroids and histological analysis to confirm the sex and gonad developmental stage. Histology identified males and females at different developmental stages. Serum testosterone differed significantly between mature males and females (321 vs 15.4ngml-1) as well as 17β estradiol (0.4 vs 4.2ngml-1). High testosterone concentration was found also in immature sturgeon females. The male:female sex ratio was 1:1.5. Size was found to be significantly different between males (9.2kg and 114.8cm) and females (12.9kg and 121.6cm). Results indicate ultrasounds as a reliable, rapid and non invasive method to determine sex and maturity stages in hybrid sturgeon A. naccarii×A. baerii during the reproductive period, affording benefits to farmers for sex selection and breeding purposes. Further investigations are needed, in particular in immature individuals and outside the reproductive season, to identify sturgeon sex as early as possible. Article in Journal/Newspaper Acipenser baerii Padua Research Archive (IRIS - Università degli Studi di Padova) Journal of Applied Ichthyology 27 2 637 642 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
description |
Sex and stage of gonad maturity in 6year-old sturgeon hybrids (Acipenser naccarii female×Acipenser baerii male) were examined by means of ultrasonography, histology and sex steroid analyses during the reproductive season. Ultrasound images of gonads revealed male and female sturgeons at different stages of maturity, distinguished by gonad morphology and tissue echogenicity. Sexing and staging were found to be more difficult in immature fish, especially males, and ultrasounds were combined with sex steroids and histological analysis to confirm the sex and gonad developmental stage. Histology identified males and females at different developmental stages. Serum testosterone differed significantly between mature males and females (321 vs 15.4ngml-1) as well as 17β estradiol (0.4 vs 4.2ngml-1). High testosterone concentration was found also in immature sturgeon females. The male:female sex ratio was 1:1.5. Size was found to be significantly different between males (9.2kg and 114.8cm) and females (12.9kg and 121.6cm). Results indicate ultrasounds as a reliable, rapid and non invasive method to determine sex and maturity stages in hybrid sturgeon A. naccarii×A. baerii during the reproductive period, affording benefits to farmers for sex selection and breeding purposes. Further investigations are needed, in particular in immature individuals and outside the reproductive season, to identify sturgeon sex as early as possible. |
author2 |
Petochi, T DI MARCO, P Donadelli, V Longobardi, A Corsalini, I Bertotto, Daniela Finoia, M. G. AND MARINO, G. |
format |
Article in Journal/Newspaper |
author |
PETOCHI T DI MARCO P DONADELLI V LONGOBARDI A CORSALINI I FINOIA M. G AND MARINO G. BERTOTTO, DANIELA |
spellingShingle |
PETOCHI T DI MARCO P DONADELLI V LONGOBARDI A CORSALINI I FINOIA M. G AND MARINO G. BERTOTTO, DANIELA Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
author_facet |
PETOCHI T DI MARCO P DONADELLI V LONGOBARDI A CORSALINI I FINOIA M. G AND MARINO G. BERTOTTO, DANIELA |
author_sort |
PETOCHI T |
title |
Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
title_short |
Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
title_full |
Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
title_fullStr |
Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
title_full_unstemmed |
Sex and reproductive stage identification of sturgeon hybrids (Acipenser naccarii · Acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
title_sort |
sex and reproductive stage identification of sturgeon hybrids (acipenser naccarii · acipenser baerii) using different tools: ultrasounds, histology and sex steroids |
publisher |
Blackwell Wissenschafts-Verlag:Kurfuerstendamm 57, D-10707 Berlin Germany:011 49 30 32790634, EMAIL: customerservice@blackwell.de, INTERNET: http://www.blackwell.de, Fax: 011 49 30 327906922 |
publishDate |
2011 |
url |
http://hdl.handle.net/11577/150547 https://doi.org/10.1111/j.1439-0426.2011.01715.x |
genre |
Acipenser baerii |
genre_facet |
Acipenser baerii |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000288864600079 volume:27 firstpage:637 lastpage:642 numberofpages:6 journal:JOURNAL OF APPLIED ICHTHYOLOGY http://hdl.handle.net/11577/150547 doi:10.1111/j.1439-0426.2011.01715.x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-79953091786 |
op_doi |
https://doi.org/10.1111/j.1439-0426.2011.01715.x |
container_title |
Journal of Applied Ichthyology |
container_volume |
27 |
container_issue |
2 |
container_start_page |
637 |
op_container_end_page |
642 |
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1796946685581066240 |