Genetic evidence for two sibling species within Polydora cf. ciliata (Polychaeta: Spionidae) from the Sea of Japan
Manchenko, G.P.; Radashevsky, V.I. (1998). Genetic evidence for two sibling species within Polydora cf. ciliata (Polychaeta: Spionidae) from the Sea of Japan. Mar. Biol. (Berl.) 131(3): 489-495. https://dx.doi.org/10.1007/s002270050340
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
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| Trefwoorden |
Analytical techniques > Electrophoresis
Aquatic organisms > Boring organisms
Aquatic organisms > Marine organisms
Aquatic organisms > Marine organisms > Aquatic animals > Marine invertebrates
Biology > Genetics
Biology > Genetics > Population genetics
Classification > Taxonomy
Enzymes
Genetic parameters > Genetic distance
Genetic parameters > Genetic variance
INW, Japan Sea
INW, Russia, Primorskiy
Sympatric populations
Taxa > Species > Sibling species
Polydora ciliata (Johnston, 1838) [WoRMS]; Spionidae Grube, 1850 [WoRMS]
Japan Sea/East Sea [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Manchenko, G.P.
- Radashevsky, V.I.
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| Abstract |
Two morphologically indistinguishable but genetically very distinct polychaete species of the family Spionidae are found in the Peter the Great Bay of the Sea of Japan. Both species bore into molluscan shells and occur sympatrically. They are close in morphology to Polydora ciliata and some other members of the redefined P. Ciliata species complex. The systematics of the two species is still under consideration by one of us (V.I.R.). A total of nine enzyme systems comprising 12 isozyme loci were examined in both the species by means of starch gel electrophoresis. Nei's genetic distance between them proved surprisingly high (D = 1.942) being the highest among estimates so far obtained for pairs of polydorid species. The levels of intraspecific genetic variation in both species (Polydora sp. 1, He = 0.287 plus or minus 0.064; Polydora sp. 2, He = 0.111 plus or minus 0.045) are comparable to those of other electrophoretically studied polydorids. The problem of taxonomic integrity of cosmopolitan marine invertebrate species is briefly discussed as well as the usefulness of isozymes as species-specific characters suitable for unequivocal discrimination between sibling polydorid species. A list of enzymes characterized by interspecifically variable numbers of expressed isozymes within polydorids is given and recommended for such a discrimination. |
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