Genetic analysis of tuna populations, Thunnus thynnus thynnus and T . alalunga

Pujolar, J. M.; Roldán, Marı́a Inés; Plá, Carles

doi:10.1007/s00227-003-1080-1

Cited by 40 publications

(42 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…While initial studies did not find differences, probably due to the small sample size used by Viñas et al (1999) or the lack of resolution of allozyme markers in the study by Pujolar et al (2003), genetic differences were detected using other types of genetic markers such as blood groups (Arrizabalaga et al 2004) and mtDNA (Viñas et al 2004, Nakadate et al 2005. In the present study, Mediterranean samples showed the highest and most significant F ST values when compared to the oceanic ones (pairwise comparisons).…”

Section: Genetic Diversity Between Populationscontrasting

confidence: 56%

“…Additionally, based on 12 micro sa tel lite loci, Davies et al (2011) described genetic differentiation within the Me diterranean Sea and between North Atlantic and South Pacific samples. Previous studies on the genetic structure of albacore populations used other types of markers, such as allozymes (Pujolar et al 2003), mtDNA (Chow & Ushiama 1995, Yeh et al 1997, Viñas et al 1999, Nakadate et al 2005, Wu et al 2009, and blood groups (Arriza balaga et al 2004). Taken to gether, these stu dies showed genetic differences be tween the North Pacific and Indian Oceans, but barely de tected, heterogeneity within oceans (Chow & Ushi ama 1995, Nakadate et al 2005, or even between North Atlantic and Mediterranean stocks (Viñas et al 1999, Pujolar et al 2003.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Worldwide genetic structure of albacore Thunnus alalunga revealed by microsatellite DNA markers

Montes¹,

Iriondo²,

Manzano³

et al. 2012

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

One of the most common problems in fisheries is the definition of management units. Albacore Thunnus alalunga is an important species for commercial fisheries. Its population structure is still partially unknown; however, on the basis of fisheries data, tagging experiments, and morpho-ecological studies, 6 management units are currently accepted for this species. The main objective of this study was to define genetic entities within T. alalunga and to discuss the appropriateness of current management units. For this purpose, 13 microsatellite loci were applied to 551 albacore samples collected worldwide, and the population genetic structure was assessed. The most relevant differences between management and genetic units were that (1) Atlantic and Indian Ocean samples are genetically indistinguishable, and (2) possible differentiation exists within the Pacific Ocean and also within the Mediterranean Sea. Thus, this study provides genetic information to clarify albacore population delimitation, which is a key factor to reach the demanded sustainable management of this resource.

show abstract

Section: Genetic Diversity Between Populationscontrasting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Worldwide genetic structure of albacore Thunnus alalunga revealed by microsatellite DNA markers

Montes¹,

Iriondo²,

Manzano³

et al. 2012

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…Recent studies sequencing the control region III ) and analyzing allozymes (Pujolar et al 2003) have failed to find differentiation among the Mediterranean and Atlantic populations of albacore, concluding that other markers should be used in population characterization. In our study, the distance between Mediterranean and North Atlantic albacore populations based on blood group results was very high.…”

Section: Discussionmentioning

confidence: 99%

“…The northern stock is considered to be independent of the Mediterranean stock based on the existence of a separate spawning area in the Mediterranean (Lalami et al 1973, Dicenta et al 1975, different morphometrics (Bard 1981), different growth rates and age at first maturity (Arena et al 1980), and tagging data and larvae distri-bution (FAO 1994). In spite of this, some AtlanticMediterranean interchange of individuals has been recorded through tagging experiments (Arrizabalaga et al 2002), and Viñas et al (1999) and Pujolar et al (2003) found no genetic differentiation among samples from several locations on the NE Atlantic and the western Mediterranean.…”

Section: Introductionmentioning

confidence: 98%

Population structure of albacore Thunnus alalunga inferred from blood groups and tag-recapture analyses

Arrizabalaga¹,

Costas²,

Juste³

et al. 2004

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Samples of albacore Thunnus alalunga from 6 locations worldwide were used for blood group analysis according to the binding patterns of 8 different lectins. Conventional tag recapture data was reviewed and a spatially structured tag attrition model was fitted to data from the North Atlantic and the Mediterranean. Blood group analyses suggest that: (1) the Pacific population is the most distant from the others, (2)

show abstract

“…In the other bluefin tuna no spatial genetic structure was detected among samples of southern bluefin tuna (T. maccoyii) from the Indian and Pacific Oceans (Grewe et al, 1997), as expected for a species with a single spawning ground in the Java Sea. In contrast, in the Atlantic bluefin tuna (T. thynnus) no spatial genetic heterogeneity was detected among samples in the eastern Atlantic Ocean (Pujolar et al, 2003), but populations from the Gulf of Mexico and the Mediterranean were genetically distinct (Boustany et al, 2008). In recent decades, many wild organisms have experienced many environmental and harvesting effects that have led to population declines.…”

Section: Intraspecific Divergencementioning

confidence: 97%