Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar )
With an overarching objective of improving the hatchery production of Atlantic salmon ( Salmo salar ) all‐female progeny, this study comparatively evaluated the reproductive parameters between normal (genotype XY) and neo‐males (genotype XX). Four normal (XY) and seven neo‐ (XX) males, from the same...
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Online Access: | https://doi.org/10.1111/are.14271 http://ecite.utas.edu.au/134721 |
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ftunivtasecite:oai:ecite.utas.edu.au:134721 2023-05-15T15:31:23+02:00 Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) de Castro, PL Patil, JG 2019 https://doi.org/10.1111/are.14271 http://ecite.utas.edu.au/134721 en eng Blackwell Publishing Ltd http://dx.doi.org/10.1111/are.14271 de Castro, PL and Patil, JG, Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ), Aquaculture Research, 50, (11) pp. 3171-3180. ISSN 1355-557X (2019) [Refereed Article] http://ecite.utas.edu.au/134721 Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1111/are.14271 2022-09-05T22:16:57Z With an overarching objective of improving the hatchery production of Atlantic salmon ( Salmo salar ) all‐female progeny, this study comparatively evaluated the reproductive parameters between normal (genotype XY) and neo‐males (genotype XX). Four normal (XY) and seven neo‐ (XX) males, from the same brood stock, distinguished by their ability to or lack of expressing semen, respectively, were comparatively evaluated. The left testicular lobe was used for histomorphometric analyses, while the right for semen collection and sperm quality analyses. Histomorphometric observations revealed that neo‐male testes are irregularly shaped, and have poorly formed seminiferous ducts, higher proportions of interstitial tissue and lower gonadosomatic index ( p <.05). In addition, hypertrophied and cyst forming Sertoli cells were found in these individuals which collectively appear to form a physical barrier, precluding the semen collection by standard stripping techniques and reducing sperm quality. Particularly, semen motility (80.692.4% and 57.236.5% for XY and XX respectively) and duration of motility (99.3128.03s and 66.8423.83s for XY and XX respectively) of neo‐males were most compromised ( p <.05). Interestingly, the TUNEL assay indicated no signs of apoptotic tissue suggesting that the histological differences may relate to delayed physiological/sexual maturity of neo‐males. Article in Journal/Newspaper Atlantic salmon Salmo salar eCite UTAS (University of Tasmania) Aquaculture Research 50 11 3171 3180 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture |
spellingShingle |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture de Castro, PL Patil, JG Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
topic_facet |
Agricultural Veterinary and Food Sciences Fisheries sciences Aquaculture |
description |
With an overarching objective of improving the hatchery production of Atlantic salmon ( Salmo salar ) all‐female progeny, this study comparatively evaluated the reproductive parameters between normal (genotype XY) and neo‐males (genotype XX). Four normal (XY) and seven neo‐ (XX) males, from the same brood stock, distinguished by their ability to or lack of expressing semen, respectively, were comparatively evaluated. The left testicular lobe was used for histomorphometric analyses, while the right for semen collection and sperm quality analyses. Histomorphometric observations revealed that neo‐male testes are irregularly shaped, and have poorly formed seminiferous ducts, higher proportions of interstitial tissue and lower gonadosomatic index ( p <.05). In addition, hypertrophied and cyst forming Sertoli cells were found in these individuals which collectively appear to form a physical barrier, precluding the semen collection by standard stripping techniques and reducing sperm quality. Particularly, semen motility (80.692.4% and 57.236.5% for XY and XX respectively) and duration of motility (99.3128.03s and 66.8423.83s for XY and XX respectively) of neo‐males were most compromised ( p <.05). Interestingly, the TUNEL assay indicated no signs of apoptotic tissue suggesting that the histological differences may relate to delayed physiological/sexual maturity of neo‐males. |
format |
Article in Journal/Newspaper |
author |
de Castro, PL Patil, JG |
author_facet |
de Castro, PL Patil, JG |
author_sort |
de Castro, PL |
title |
Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
title_short |
Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
title_full |
Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
title_fullStr |
Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
title_full_unstemmed |
Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ) |
title_sort |
comparative gonad histology and semen quality of normal (xy) and neo-males (xx) of atlantic salmon ( salmo salar ) |
publisher |
Blackwell Publishing Ltd |
publishDate |
2019 |
url |
https://doi.org/10.1111/are.14271 http://ecite.utas.edu.au/134721 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
http://dx.doi.org/10.1111/are.14271 de Castro, PL and Patil, JG, Comparative gonad histology and semen quality of normal (XY) and neo-males (XX) of Atlantic salmon ( Salmo salar ), Aquaculture Research, 50, (11) pp. 3171-3180. ISSN 1355-557X (2019) [Refereed Article] http://ecite.utas.edu.au/134721 |
op_doi |
https://doi.org/10.1111/are.14271 |
container_title |
Aquaculture Research |
container_volume |
50 |
container_issue |
11 |
container_start_page |
3171 |
op_container_end_page |
3180 |
_version_ |
1766361883266252800 |