Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea
We conducted molecular-genetic and morphological studies on the veined rapa whelk Rapana venosa (Valenciennes, 1846) in the Crimean waters of the Black Sea in order to determine possible reasons of the invasive success of this mollusk. Molecular-genetic tests were performed using COI gene; the surve...
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| Format: | Article |
| Language: | English |
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Oles Honchar Dnipro National University
2020-02-01
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| Series: | Biosystems Diversity |
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| Online Access: | https://ecology.dp.ua/index.php/ECO/article/view/1023 |
| _version_ | 1811180334298955776 |
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| author | Е. Е. Slynko Y. V. Slynko V. I. Rabushko |
| author_facet | Е. Е. Slynko Y. V. Slynko V. I. Rabushko |
| author_sort | Е. Е. Slynko |
| collection | DOAJ |
| description | We conducted molecular-genetic and morphological studies on the veined rapa whelk Rapana venosa (Valenciennes, 1846) in the Crimean waters of the Black Sea in order to determine possible reasons of the invasive success of this mollusk. Molecular-genetic tests were performed using COI gene; the surveyed samples reliably identified to R. venosa species. We compared the data on initial (from the Far-Eastern seas) and some invasive populations. In the natural conditions of the Yellow, East China Seas, and the Sea of Japan, the genetic diversity of rapa whelk is high (Hd = 0.933, π = 0.002). In all the invasive populations of rapa whelk (Black Sea, European and North American), an extremely low level of haplotypic and nucleotide diversity was determined (Hd = 0.0, π = 0.0). Despite low values of genetic diversity, the invasive populations of rapa whelk are characterized by ecological success. We noted stable growth of populations, tolerance to diseases and parasites, effective reproduction, high fertility. This contradicts the main provisions of the population genetics theory of formation of edge of range populations, because usually only a small number of specimens of rapa whelk were introduced. The explanations of the unique condition of the invasive populations of rapa whelk, both from an ecological perspective (high resistance to fluctuations of hydrological factors and chemical pollution, absence of enemies, high fertility) and genetic perspective (high selective value of separate haplotypes settled in the new water areas) have not been confirmed. We determined that a very important factor for the naturalization of the rapa whelk at low genetic diversity is the intra-species morpho-ecological divergence. In the Crimean water area of the Black Sea, R. venosa was found to have two morpho-ecological forms associated with the peculiarities of the development of the proportions of the shell. Study of successful invasive species would allow timely and adequate reaction to new cases of introduction. |
| first_indexed | 2024-04-11T09:01:22Z |
| format | Article |
| id | doaj.art-1974a652624540569ceeeacbe6459664 |
| institution | Directory Open Access Journal |
| issn | 2519-8513 2520-2529 |
| language | English |
| last_indexed | 2024-04-11T09:01:22Z |
| publishDate | 2020-02-01 |
| publisher | Oles Honchar Dnipro National University |
| record_format | Article |
| series | Biosystems Diversity |
| spelling | doaj.art-1974a652624540569ceeeacbe64596642022-12-22T04:32:46ZengOles Honchar Dnipro National UniversityBiosystems Diversity2519-85132520-25292020-02-01281485210.15421/0120081023Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black SeaЕ. Е. Slynko0Y. V. Slynko1V. I. Rabushko2Papanin Institute for Biology of Inland Waters, Russian Academy of SciencesA. O. Kovalevsky Institute of Biology of the Southern Seas of RASA. O. Kovalevsky Institute of Biology of the Southern Seas of RASWe conducted molecular-genetic and morphological studies on the veined rapa whelk Rapana venosa (Valenciennes, 1846) in the Crimean waters of the Black Sea in order to determine possible reasons of the invasive success of this mollusk. Molecular-genetic tests were performed using COI gene; the surveyed samples reliably identified to R. venosa species. We compared the data on initial (from the Far-Eastern seas) and some invasive populations. In the natural conditions of the Yellow, East China Seas, and the Sea of Japan, the genetic diversity of rapa whelk is high (Hd = 0.933, π = 0.002). In all the invasive populations of rapa whelk (Black Sea, European and North American), an extremely low level of haplotypic and nucleotide diversity was determined (Hd = 0.0, π = 0.0). Despite low values of genetic diversity, the invasive populations of rapa whelk are characterized by ecological success. We noted stable growth of populations, tolerance to diseases and parasites, effective reproduction, high fertility. This contradicts the main provisions of the population genetics theory of formation of edge of range populations, because usually only a small number of specimens of rapa whelk were introduced. The explanations of the unique condition of the invasive populations of rapa whelk, both from an ecological perspective (high resistance to fluctuations of hydrological factors and chemical pollution, absence of enemies, high fertility) and genetic perspective (high selective value of separate haplotypes settled in the new water areas) have not been confirmed. We determined that a very important factor for the naturalization of the rapa whelk at low genetic diversity is the intra-species morpho-ecological divergence. In the Crimean water area of the Black Sea, R. venosa was found to have two morpho-ecological forms associated with the peculiarities of the development of the proportions of the shell. Study of successful invasive species would allow timely and adequate reaction to new cases of introduction.https://ecology.dp.ua/index.php/ECO/article/view/1023rapa whelk; coi gene; invasions; morpho-ecological forms; distribution. |
| spellingShingle | Е. Е. Slynko Y. V. Slynko V. I. Rabushko Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea Biosystems Diversity rapa whelk; coi gene; invasions; morpho-ecological forms; distribution. |
| title | Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea |
| title_full | Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea |
| title_fullStr | Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea |
| title_full_unstemmed | Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea |
| title_short | Adaptive strategy of Rapana venosa (Gastropoda, Muricidae) in the invasive population of the Black Sea |
| title_sort | adaptive strategy of rapana venosa gastropoda muricidae in the invasive population of the black sea |
| topic | rapa whelk; coi gene; invasions; morpho-ecological forms; distribution. |
| url | https://ecology.dp.ua/index.php/ECO/article/view/1023 |
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