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Journals / Turkish Journal of Fisheries and Aquatic Sciences / 2018 / Cilt: 18 - Sayı: 2

Genetic Differentiation of Three Spicara (Pisces: Centracanthidae) Species, S. maena, S. flexuosa and S. smaris: and Intraspecific Substructure of S. flexuosa in Turkish Coastal Waters

Yusuf BEKTAŞ
İsmail AKSU
Gökhan KALAYCI
Erhan IRMAK
Semih ENGİN
Davut TURAN
Pages
301–311
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The current distribution and demographic pattern of Spicara species in the Eastern Mediterranean basin are shaped byclimatic events during late Pleistocene and mid-Holocene (about 25-5 kya) and the biological and ecological characteristicsspecific to Spicara species.

📌 3 Key Takeaways

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Objective & Hypothesis:Interspecific and intraspecific differentiation of the picarel in Turkish coastal waters were examined using partial 16SrRNA (1021 bp) and whole cytochrome b gene (1141 bp) sequences of 244 samples from 7 picarel populations across theirgeographical distribution.
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Key Findings & Data:Genetic distances and phylogenetic tree topologies revealed that three Spicara species weredistinctly separated from each other and S. flexuosa and S. maena are genetically more closely related than S. smaris.
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Conclusion & Impact:The current distribution and demographic pattern of Spicara species in the Eastern Mediterranean basin are shaped byclimatic events during late Pleistocene and mid-Holocene (about 25-5 kya) and the biological and ecological characteristicsspecific to Spicara species.
🔬Design:Research Article
📍Scope:244 samples
⚙️Variables:Domain Parameters

Özet

Interspecific and intraspecific differentiation of the picarel in Turkish coastal waters were examined using partial 16SrRNA (1021 bp) and whole cytochrome b gene (1141 bp) sequences of 244 samples from 7 picarel populations across theirgeographical distribution. Genetic distances and phylogenetic tree topologies revealed that three Spicara species weredistinctly separated from each other and S. flexuosa and S. maena are genetically more closely related than S. smaris. Lowlevel genetic diversity and a star-like haplotype network can be attributed to the founder effect associated with demographicbottleneck in late Pleistocene Mediterranean basin. AMOVA of the genetic substructure for S. flexuosa does not support anygrouping in the Turkish waters. The divergence time between the Mediterranean and Black Sea populations (0.015%, cyt b) ofS. flexuosa estimated based on the mtDNA clock calibration of 2% sequence per million years suggests that the Mediterraneansamples with reduced genetic diversity has colonized into the Black Sea through straits during the early Holocene (about 7500kya). The current distribution and demographic pattern of Spicara species in the Eastern Mediterranean basin are shaped byclimatic events during late Pleistocene and mid-Holocene (about 25-5 kya) and the biological and ecological characteristicsspecific to Spicara species.

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Cite This Article

BEKTAŞ, Y., AKSU, İ., KALAYCI, G., IRMAK, E., ENGİN, S., TURAN, D. (2018). Genetic Differentiation of Three Spicara (Pisces: Centracanthidae) Species, S. maena, S. flexuosa and S. smaris: and Intraspecific Substructure of S. flexuosa in Turkish Coastal Waters. Turkish Journal of Fisheries and Aquatic Sciences, Cilt: 18 - Sayı: 2, 301–311. https://ajindex.com/articles/408015

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