Genetic diversity and historical demography of Atlantic bigeye tuna (Thunnus obesus)

Martínez, Pilar; González, Elena; Castilho, Rita; Zardoya, Rafael

doi:10.1016/j.ympev.2005.07.022

Cited by 67 publications

(77 citation statements)

References 44 publications

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“…Keragaman genetik yang tinggi juga telah dilaporkan oleh beberapa penelitian lainnya diantaranya Moria et al (2009) yang memperoleh keragaman genetik ikan sirip kuning berdasarkan sampel larva sebesar 0,878, Wu et al (2010) keragaman genetik ikan tuna sirip kuning sebesar 0,992 di Barat Samudera Pasifik dan 0,999 di Barat Samudera Hindia, serta Kunal dan Kumar (2013) memperoleh keragaman genetik tuna sirip kuning sebesar 0,998. Hasil penelitian ini, mirip dengan laporan hasil penelitian ikan migratory pelagis lainnya seperti tuna albacore (Thunnus alalunga), tuna mata besar (Thunnus obesus) dan ikan cakalang (Katsuwonus pelamis) (Carlsson et al, 2004;Chiang et al, 2006Chiang et al, , 2008Martinez dan Zardoya, 2005;Martinez et al, 2006;Nugraha, 2009;Dammannaggoda, 2007;Suman et al, 2013). Kemiripan tingkat keragaman genetik tuna merupakan ciri dari ikan dengan tingkat migrasi yang ditinggi, dimana tuna merupakan ikan bermigrasi jauh.…”

Section: Keragaman Genetikunclassified

Keragaman genetik ikan tuna sirip kuning (Thunnus albacares) dari dua populasi di Laut Maluku, Indonesia

Akbar¹,

Zamani²,

Madduppa³

2014

Depik

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Abstract. Yellowfin tuna (Thunnus albacores) is a large, pelagic, and migratory species of tuna that inhabits Moluccas SeaAbstrak. Tuna sirip kuning (Thunnus albacores) adalah ikan komersial penting dan ditemukan di Laut Maluku, Indonesia. Tetapi, aktivitas penangkapan ikan tuna sirip kuning dapat menurunkan kualitas dan kuantitas stok ikan, sehingga perlu adanya pengkajian keragaman genetik ikan tuna sirip kuning. Pemahaman yang baik tentang keragaman genetika dibutuhkan untuk merencanakan strategi konservasi tuna yang lebih baik. Penelitian ini bertujuan untuk mengetahui keragaman genetik ikan tuna sirip kuning dari dua populasi di Laut Maluku. Sebanyak 41 sampel jaringan dari tuna sirip kuning dikumpulkan dari dua populasi di Laut Maluku (Maluku Utara dan Ambon) selama ekspedisi pada bulan Februari 2013. Hasil penelitian menunjukkan bahwa keragaman genetik populasi tuna sirip kuning pada perairan Maluku Utara dan Ambon masing-masing sebesar 0,984 dan 1,00 sedangkan nilai keragaman nukleotida masingmasing bernilai 0,021 dan 0,018. Nilai keragaman genetik dan keragaman nukloetida yang tinggi didaptkan antar kedua populasi masing-masing sebesar 0,990 dan 0,020. Berdasarkan analisis filogenetik, dua populasi di Laut Maluku ini memiliki kedekatan secara genetik.

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Section: Keragaman Genetikunclassified

Keragaman genetik ikan tuna sirip kuning (Thunnus albacares) dari dua populasi di Laut Maluku, Indonesia

Akbar¹,

Zamani²,

Madduppa³

2014

Depik

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“…In other tuna species DNA studies have revealed little intra-specific divergence within, but significant divergence between ocean basins. In bigeye tuna (T. obesus) DNA markers showed no divergence among population samples from the western Pacific Ocean (Chiang et al, 2006), but high divergence among Atlantic and Indo-Pacific populations (Chow et al, 2000;Chiang et al, 2006;Martinez et al, 2006). Similarly, in albacore tuna (T. alalunga) no genetic differences were detected among samples from the Northwest Pacific Ocean (Wu et al, 2009), but significant differences were reported among Atlantic and Indo-Pacific populations (Vinas et al, 2004).…”

Section: Intraspecific Divergencementioning

confidence: 99%

Interspecific and Intraspecific Genetic Diversity of Thunnus Species

Tseng¹,

Jean²,

Smith³

et al. 2012

Analysis of Genetic Variation in Animals

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“…In the North Atlantic, marine species (so far investigated) seem to follow a pre-LGM expansion model, e.g., the common goby (Gysels et al 2004), the Atlantic swordfish , the Atlantic bluefin tuna , Atlantic bigeye tuna (Martinez et al 2006), the red alga Palmeria palmata (Provan et al 2005), the brown alga Fucus serratus (Hoarau et al submitted), the bivalve Macoma balthica (Luttikhuizen et al 2003) and the estuarine fish, Ethmalosa fimbriata (Durand et al 2005); where the date of expansion was estimated at between 536,000 (for the common goby) and 128,000 years (for the red alga, Palmeria palmata). Thus, it is likely that highly mobile species and/or those able to shift in the subtidal fared better in the many glacial-interglacial periods.…”

Section: Phylogeographic Patternsmentioning

confidence: 99%

Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic

et al. 2006

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Population genetic structure of the thorny skate (Amblyraja radiata) was surveyed in >300 individuals sampled from Newfoundland, Iceland, Norway, the Kattegat and the central North Sea. A 290-bp fragment of the mt cytochrome-b gene was first screened by SSCP. Sequences of SSCP haplotypes revealed 34 haplotypes, 14 of which were unique to Iceland, 3 to Newfoundland, 1 to Norway and 3 to the Kattegat. The global F ST was weak but significant. Removal of the two Kattegat locations, which were the most differentiated, resulted in no significant genetic differentiation. Haplotype diversity was high and evenly distributed across the entire Atlantic (h = 0.8) with the exception of the North Sea (h = 0.48). Statistical parsimony revealed a star-like genealogy with a central widespread haplotype. A subsequent nested clade analysis led to the inference of contiguous expansion with evidence for long distance dispersal between Newfoundland and Iceland. Historical demographic analysis showed that thorny skates have undergone exponential population expansion that started between 1.1 million and 690,000 years ago; and that the Last Glacial Maximum apparently had little effect. These results strongly differ from those of a parallel study of the thornback ray (Raja clavata) in which clear structure and former refugial areas could be identified. Although both species have similar life history traits and overlapping ranges, the continental shelf edge apparently does not present a barrier to migration in A. radiata, as it does for R. clavata.

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Genetic diversity and historical demography of Atlantic bigeye tuna (Thunnus obesus)

Cited by 67 publications

References 44 publications

Keragaman genetik ikan tuna sirip kuning (Thunnus albacares) dari dua populasi di Laut Maluku, Indonesia

Keragaman genetik ikan tuna sirip kuning (Thunnus albacares) dari dua populasi di Laut Maluku, Indonesia

Interspecific and Intraspecific Genetic Diversity of Thunnus Species

Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic

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