Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758)
The purpose of this in situ study was to determine the pattern of protandrous hermaphrodite Ceratothoa oestroides infestation in sea bass with respect to parasite sexual behaviour. Sea bass (N = 618) were divided into six net cages which presented three experimental groups. Group 1 represented infec...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-07-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S235251341930170X |
| _version_ | 1818991926842490880 |
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| author | Slavica Čolak Danijel Mejdandžić Toni Števanja Matko Kolega Renata Barić Tomislav Šarić Bruna Petani Ivan Župan Bosiljka Mustać |
| author_facet | Slavica Čolak Danijel Mejdandžić Toni Števanja Matko Kolega Renata Barić Tomislav Šarić Bruna Petani Ivan Župan Bosiljka Mustać |
| author_sort | Slavica Čolak |
| collection | DOAJ |
| description | The purpose of this in situ study was to determine the pattern of protandrous hermaphrodite Ceratothoa oestroides infestation in sea bass with respect to parasite sexual behaviour. Sea bass (N = 618) were divided into six net cages which presented three experimental groups. Group 1 represented infected fish, where female parasites were manually removed and male parasites were left in the buccal cavity of fish. Group 2 represented infected fish where both female and male parasites were removed, and group 3 represented uninfected fish (i.e., the control group). The duration of the experiment was 865.47 degree days (ºD), and average sea bass mortality rate was 11.97 %. No mature C. oestroides females were found at the end of the experiment. Fish in cages with removed female parasites (group 1) had a statistically higher number of parasites in pairs at the end of the experiment, compared to the group where all parasites - both males and females - were removed (group 2) and control group (group 3) (P < 0.005). Female parasites from group 1, being larger and older, had more success in mate finding. These results suggest that the female parasite uses some method of communication to attract the pulli II, i.e., the future male parasite, necessary for reproduction. Because there is a lack of parasite biology studies, especially in situ, our data on reproduction and mating behaviour of C. oestroides could help in the development of overall parasitic removal procedures and health management in aquaculture. |
| first_indexed | 2024-12-20T20:18:02Z |
| format | Article |
| id | doaj.art-0376ab94ea0b4e0192ed78f38d6dfd27 |
| institution | Directory Open Access Journal |
| issn | 2352-5134 |
| language | English |
| last_indexed | 2024-12-20T20:18:02Z |
| publishDate | 2020-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj.art-0376ab94ea0b4e0192ed78f38d6dfd272022-12-21T19:27:39ZengElsevierAquaculture Reports2352-51342020-07-0117100316Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758)Slavica Čolak0Danijel Mejdandžić1Toni Števanja2Matko Kolega3Renata Barić4Tomislav Šarić5Bruna Petani6Ivan Župan7Bosiljka Mustać8Cromaris d.d., Gaženička cesta 4b, 23000, Zadar, CroatiaCromaris d.d., Gaženička cesta 4b, 23000, Zadar, CroatiaCromaris d.d., Gaženička cesta 4b, 23000, Zadar, CroatiaCromaris d.d., Gaženička cesta 4b, 23000, Zadar, CroatiaCromaris d.d., Gaženička cesta 4b, 23000, Zadar, CroatiaDepartment of Ecology, Agronomy and Aquaculture, University of Zadar, Trg kneza Višeslava 9, 23000, Zadar, Croatia; Corresponding author.Department of Ecology, Agronomy and Aquaculture, University of Zadar, Trg kneza Višeslava 9, 23000, Zadar, CroatiaDepartment of Ecology, Agronomy and Aquaculture, University of Zadar, Trg kneza Višeslava 9, 23000, Zadar, CroatiaDepartment of Ecology, Agronomy and Aquaculture, University of Zadar, Trg kneza Višeslava 9, 23000, Zadar, CroatiaThe purpose of this in situ study was to determine the pattern of protandrous hermaphrodite Ceratothoa oestroides infestation in sea bass with respect to parasite sexual behaviour. Sea bass (N = 618) were divided into six net cages which presented three experimental groups. Group 1 represented infected fish, where female parasites were manually removed and male parasites were left in the buccal cavity of fish. Group 2 represented infected fish where both female and male parasites were removed, and group 3 represented uninfected fish (i.e., the control group). The duration of the experiment was 865.47 degree days (ºD), and average sea bass mortality rate was 11.97 %. No mature C. oestroides females were found at the end of the experiment. Fish in cages with removed female parasites (group 1) had a statistically higher number of parasites in pairs at the end of the experiment, compared to the group where all parasites - both males and females - were removed (group 2) and control group (group 3) (P < 0.005). Female parasites from group 1, being larger and older, had more success in mate finding. These results suggest that the female parasite uses some method of communication to attract the pulli II, i.e., the future male parasite, necessary for reproduction. Because there is a lack of parasite biology studies, especially in situ, our data on reproduction and mating behaviour of C. oestroides could help in the development of overall parasitic removal procedures and health management in aquaculture.http://www.sciencedirect.com/science/article/pii/S235251341930170XCeratothoa oestroidesMating behaviourCultured sea bassEastern Adriatic Sea |
| spellingShingle | Slavica Čolak Danijel Mejdandžić Toni Števanja Matko Kolega Renata Barić Tomislav Šarić Bruna Petani Ivan Župan Bosiljka Mustać Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) Aquaculture Reports Ceratothoa oestroides Mating behaviour Cultured sea bass Eastern Adriatic Sea |
| title | Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) |
| title_full | Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) |
| title_fullStr | Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) |
| title_full_unstemmed | Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) |
| title_short | Mate finding in the isopod parasite Ceratothoa oestroides (Risso, 1816) in an aquaculture environment: A case study in the sea bass Dicentrarchus labrax (Linnaeus, 1758) |
| title_sort | mate finding in the isopod parasite ceratothoa oestroides risso 1816 in an aquaculture environment a case study in the sea bass dicentrarchus labrax linnaeus 1758 |
| topic | Ceratothoa oestroides Mating behaviour Cultured sea bass Eastern Adriatic Sea |
| url | http://www.sciencedirect.com/science/article/pii/S235251341930170X |
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