Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea
The purpose of the research is analyzing the seasonal dynamics for the number and the hemipopulation structure of the trematode Gynaecotyla adunca larvae in shrimps of the genus Palaemon Weber, 1795 and determining the dependence of their infection with the metacercariae G. adunca on the host size a...
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| Format: | Article |
| Language: | Russian |
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Federal Scientific Centre VIEV
2021-09-01
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| Series: | Российский паразитологический журнал |
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| Online Access: | https://vniigis.elpub.ru/jour/article/view/795 |
| _version_ | 1826569979091222528 |
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| author | Yu. V. Belousova V. L. Lozovsky |
| author_facet | Yu. V. Belousova V. L. Lozovsky |
| author_sort | Yu. V. Belousova |
| collection | DOAJ |
| description | The purpose of the research is analyzing the seasonal dynamics for the number and the hemipopulation structure of the trematode Gynaecotyla adunca larvae in shrimps of the genus Palaemon Weber, 1795 and determining the dependence of their infection with the metacercariae G. adunca on the host size and the season of the year in the water area of Sevastopol.Materials and methods. Samples of aquatic organisms were collected monthly during 2012 in two different biotopes, the estuary of the Chernaya River and the Kazachya Bay. We examined a total of 2,445 specimens of the Hydrobia acuta mollusk, 200 specimens of the Palaemon elegans shrimp in the estuary of the Chernaya River, and 2,248 specimens of the H. acuta mollusks and 64 specimens of P. adsepsus in the water area of Kazachya Bay. Shrimps were caught with a 1 × 0.4 m seine with a 6–8 mm mesh. The mollusks were collected with a hand grab sampler with a sampling area of 0.04 m2. The mollusks and shrimps were classified in accordance with the World Register of Marine Species. All mollusk and shrimp tissues were examined by the compression method under an MBS-10 binocular microscope. Descriptive statistics was calculated using Statistica 6 for Windows.Results and discussion. We have found that the parthenita G. adunca is characterized by asynchronous emergence of secondary sporocyst that contain cercariae, while the metacercariae G. adunca hemipopulation is characterized by an overdispersed distribution, which indirectly indicates a low density of the host population and its constant migration. We analyzed seasonal dynamics of the found microfallid larvae population. The metacercariae G. adunca are characterized by one peak of infection with trematodes in summer. |
| first_indexed | 2024-03-08T21:39:48Z |
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| id | doaj.art-27c46a9a7d7649a1abda789b80646411 |
| institution | Directory Open Access Journal |
| issn | 1998-8435 2541-7843 |
| language | Russian |
| last_indexed | 2025-03-14T11:47:56Z |
| publishDate | 2021-09-01 |
| publisher | Federal Scientific Centre VIEV |
| record_format | Article |
| series | Российский паразитологический журнал |
| spelling | doaj.art-27c46a9a7d7649a1abda789b806464112025-03-02T09:49:58ZrusFederal Scientific Centre VIEVРоссийский паразитологический журнал1998-84352541-78432021-09-01153485310.31016/1998-8435-2021-15-3-48-53650Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black SeaYu. V. Belousova0V. L. Lozovsky1A. O. Kovalevsky Institute of Biology of the Southern Seas of RASA. O. Kovalevsky Institute of Biology of the Southern Seas of RASThe purpose of the research is analyzing the seasonal dynamics for the number and the hemipopulation structure of the trematode Gynaecotyla adunca larvae in shrimps of the genus Palaemon Weber, 1795 and determining the dependence of their infection with the metacercariae G. adunca on the host size and the season of the year in the water area of Sevastopol.Materials and methods. Samples of aquatic organisms were collected monthly during 2012 in two different biotopes, the estuary of the Chernaya River and the Kazachya Bay. We examined a total of 2,445 specimens of the Hydrobia acuta mollusk, 200 specimens of the Palaemon elegans shrimp in the estuary of the Chernaya River, and 2,248 specimens of the H. acuta mollusks and 64 specimens of P. adsepsus in the water area of Kazachya Bay. Shrimps were caught with a 1 × 0.4 m seine with a 6–8 mm mesh. The mollusks were collected with a hand grab sampler with a sampling area of 0.04 m2. The mollusks and shrimps were classified in accordance with the World Register of Marine Species. All mollusk and shrimp tissues were examined by the compression method under an MBS-10 binocular microscope. Descriptive statistics was calculated using Statistica 6 for Windows.Results and discussion. We have found that the parthenita G. adunca is characterized by asynchronous emergence of secondary sporocyst that contain cercariae, while the metacercariae G. adunca hemipopulation is characterized by an overdispersed distribution, which indirectly indicates a low density of the host population and its constant migration. We analyzed seasonal dynamics of the found microfallid larvae population. The metacercariae G. adunca are characterized by one peak of infection with trematodes in summer.https://vniigis.elpub.ru/jour/article/view/795trematodescercariaemetacercariaemicrophallidaegastropodsshrimps<i>hydrobia acuta</i><i>gynaecotyla adunca</i><i>palaemon spp.</i> |
| spellingShingle | Yu. V. Belousova V. L. Lozovsky Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea Российский паразитологический журнал trematodes cercariae metacercariae microphallidae gastropods shrimps <i>hydrobia acuta</i> <i>gynaecotyla adunca</i> <i>palaemon spp.</i> |
| title | Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea |
| title_full | Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea |
| title_fullStr | Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea |
| title_full_unstemmed | Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea |
| title_short | Seasonal dynamics of population and age composition of the trematode <i>Gynaecotyla adunca</i> larvae (Linton, 1905) Yamaguti, 1939 in the Black Sea |
| title_sort | seasonal dynamics of population and age composition of the trematode i gynaecotyla adunca i larvae linton 1905 yamaguti 1939 in the black sea |
| topic | trematodes cercariae metacercariae microphallidae gastropods shrimps <i>hydrobia acuta</i> <i>gynaecotyla adunca</i> <i>palaemon spp.</i> |
| url | https://vniigis.elpub.ru/jour/article/view/795 |
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