Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen
The aim of the study was to assess the growth and development of sea trout, Salmo trutta L., fry obtained from frozen, thawed semen after the fish had been released into the wild and were feeding there. The semen was cryopreserved with either methanol (MeOH) or dimethyl sulfoxide (DMSO). Fresh eggs...
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| Format: | Article |
| Language: | English |
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Sciendo
2014-12-01
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| Series: | Archives of Polish Fisheries |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/aopf-2014-0028 |
| _version_ | 1818595212588482560 |
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| author | Domagała Józef Dziewulska Katarzyna Czerniawski Robert |
| author_facet | Domagała Józef Dziewulska Katarzyna Czerniawski Robert |
| author_sort | Domagała Józef |
| collection | DOAJ |
| description | The aim of the study was to assess the growth and development of sea trout, Salmo trutta L., fry obtained from frozen, thawed semen after the fish had been released into the wild and were feeding there. The semen was cryopreserved with either methanol (MeOH) or dimethyl sulfoxide (DMSO). Fresh eggs were collected and fertilized with the thawed semen. The control was eggs fertilized with fresh semen that had been kept on ice. The eggs were incubated and reared in a closed recirculating system. The fertilized eggs were counted for visible eye pigment. After rearing, three groups of fish were tagged and stocked into a stream. The fish aged 6 months were caught from the stream. The fish were measured, weighed, identified to which experimental variant they belonged, and their survival rate was estimated. No significant differences in survival rate, length, weight, or condition factor among the control, DMSO, and MeOH groups were noted during larval development in a closed recirculating system. These parameters were also similar in the control and experimental groups after the fish had grow in a natural stream. The use of frozen semen to fertilize fresh sea trout eggs resulted in a normal incubation process, larval stage, and regular fry growth and survival, both under laboratory conditions, and, most importantly, in the wild. The results indicate it is possible to use frozen semen for fry production and the restoration of wild fish populations. |
| first_indexed | 2024-12-16T11:12:26Z |
| format | Article |
| id | doaj.art-c2e2e42041fb45c9ad6719a0adbe599d |
| institution | Directory Open Access Journal |
| issn | 2083-6139 |
| language | English |
| last_indexed | 2024-12-16T11:12:26Z |
| publishDate | 2014-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Archives of Polish Fisheries |
| spelling | doaj.art-c2e2e42041fb45c9ad6719a0adbe599d2022-12-21T22:33:43ZengSciendoArchives of Polish Fisheries2083-61392014-12-0122426527010.2478/aopf-2014-0028Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semenDomagała Józef0Dziewulska Katarzyna1Czerniawski Robert2Department of General Zoology Faculty of Biology University of Szczecin, Poland ul. Felczaka 3c, 71-412 SzczecinDepartment of General Zoology Faculty of Biology University of Szczecin, Poland ul. Felczaka 3c, 71-412 SzczecinDepartment of General Zoology Faculty of Biology University of Szczecin, Poland ul. Felczaka 3c, 71-412 SzczecinThe aim of the study was to assess the growth and development of sea trout, Salmo trutta L., fry obtained from frozen, thawed semen after the fish had been released into the wild and were feeding there. The semen was cryopreserved with either methanol (MeOH) or dimethyl sulfoxide (DMSO). Fresh eggs were collected and fertilized with the thawed semen. The control was eggs fertilized with fresh semen that had been kept on ice. The eggs were incubated and reared in a closed recirculating system. The fertilized eggs were counted for visible eye pigment. After rearing, three groups of fish were tagged and stocked into a stream. The fish aged 6 months were caught from the stream. The fish were measured, weighed, identified to which experimental variant they belonged, and their survival rate was estimated. No significant differences in survival rate, length, weight, or condition factor among the control, DMSO, and MeOH groups were noted during larval development in a closed recirculating system. These parameters were also similar in the control and experimental groups after the fish had grow in a natural stream. The use of frozen semen to fertilize fresh sea trout eggs resulted in a normal incubation process, larval stage, and regular fry growth and survival, both under laboratory conditions, and, most importantly, in the wild. The results indicate it is possible to use frozen semen for fry production and the restoration of wild fish populations.https://doi.org/10.2478/aopf-2014-0028salmonidsalmo truttacryopreservationfish stockinggrowth rate |
| spellingShingle | Domagała Józef Dziewulska Katarzyna Czerniawski Robert Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen Archives of Polish Fisheries salmonid salmo trutta cryopreservation fish stocking growth rate |
| title | Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen |
| title_full | Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen |
| title_fullStr | Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen |
| title_full_unstemmed | Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen |
| title_short | Survival rate and growth in the wild of sea trout (Salmo trutta L.) fry obtained using frozen semen |
| title_sort | survival rate and growth in the wild of sea trout salmo trutta l fry obtained using frozen semen |
| topic | salmonid salmo trutta cryopreservation fish stocking growth rate |
| url | https://doi.org/10.2478/aopf-2014-0028 |
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