Mitochondrial DNA sequence variation suggests the lack of genetic heterogeneity in the Adriatic and Ionian stocks of Sardina pilchardus.

作者: Fausto Tinti , Cesare Di Nunno , Ilaria Guarniero , Monia Talenti , Stefano Tommasini

DOI: 10.1007/S10126-002-0003-3

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摘要: A genetic stock structure analysis of 11 sardine samples from the Adriatic Sea and Ionian neighboring area was carried out through sequence variation a 307-bp cytochrome b gene fragment in order to identify self-recruiting units Sardina pilchardus stock. The overall lack subdivision among detected by molecular variance, pairwise Φst values, exact test population differentiation indicates this is part larger whose boundaries are than investigated area. This conclusion agreement with preliminary allozymic mitochondrial DNA restriction length polymorphism data, but contradicts previous identification 2 subpopulations sardines argued on morphologic differences, which could be rather attributed different hydrographic or ecologic conditions occurring areas Sea. reduced flow observed between Adriatic-Ionian Spanish geographic (P < 0.001) suggests that reproductively isolated populations may occur Mediterranean

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