Is there a distinct harbor porpoise subpopulation in the Marmara Sea?

Tonay, Arda M.; Yazici, O.; Dede, Ayhan; Bilgin, Sabri; Danyer, Erdem; Aytemiz, Işıl; Maraci, Öncü; Öztürk, Ayaka Amaha; Öztürk, Bayram; Bi̇lgi̇n, Raşi̇t

doi:10.3109/24701394.2016.1155118

Cited by 6 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sole successfully genotyped historical sample included in the microsatellites analyses did however carry information attributing it to the eastern Mediterranean population (figure 1; electronic supplementary material, figure S16). Together with the sharing of a unique CR1 haplotype in the Black Sea with individuals from the Aegean Sea, our and previous results [35,36] do not support the straits of Çanakkale (Dardanelles) and Istanbul (Bosporus) as a putative barrier to MMS movements, despite its effect on other species at a wide taxonomic scale, including marine mammals [74,75].…”

Section: Discussion (A) Genetic Structure Of the Mediterranean Monk S...contrasting

confidence: 91%

The antique genetic plight of the Mediterranean monk seal ( Monachus monachus )

et al. 2022

Self Cite

View full text Add to dashboard Cite

Disentangling the impact of Late Quaternary climate change from human activities can have crucial implications on the conservation of endangered species. We investigated the population genetics and demography of the Mediterranean monk seal ( Monachus monachus ), one of the world's most endangered marine mammals, through an unprecedented dataset encompassing historical (extinct) and extant populations from the eastern North Atlantic to the entire Mediterranean Basin. We show that Cabo Blanco (Western Sahara/Mauritania), Madeira, Western Mediterranean (historical range) and Eastern Mediterranean regions segregate into four populations. This structure is probably the consequence of recent drift, combined with long-term isolation by distance ( R 2 = 0.7), resulting from prevailing short-distance (less than 500 km) and infrequent long-distance dispersal (less than 1500 km). All populations (Madeira especially), show high levels of inbreeding and low levels of genetic diversity, seemingly declining since historical time, but surprisingly not being impacted by the 1997 massive die-off in Cabo Blanco. Approximate Bayesian Computation analyses support scenarios combining local extinctions and a major effective population size decline in all populations during Antiquity. Our results suggest that the early densification of human populations around the Mediterranean Basin coupled with the development of seafaring techniques were the main drivers of the decline of Mediterranean monk seals.

show abstract

Section: Discussion (A) Genetic Structure Of the Mediterranean Monk S...contrasting

confidence: 91%

The antique genetic plight of the Mediterranean monk seal ( Monachus monachus )

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…The sole successfully genotyped historical sample included in the microsatellites analyses did however carry information attributing it to the eastern Mediterranean population (Figs 1, S15). Together with the sharing of a unique CR1 haplotype in the Black Sea with individuals from the Aegean Sea, our and previous results [35,36] do not support the straits of Çanakkale (Dardanelles) and Istanbul (Bosporus) as a putative barrier to MMS movements, despite its effect on other species at a wide taxonomic scale, including marine mammals [71,72].…”

Section: Discussioncontrasting

confidence: 87%

The antique genetic plight of the Mediterranean monk seal (Monachus monachus)

Salmona

Dayon

Lecompte

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

Disentangling the impact of Late Quaternary climate change from human activities can have crucial implications on the conservation of endangered species. We investigated the population genetics and demography of the Mediterranean monk seal (Monachus monachus), one of the world's most endangered marine mammals, through an unprecedented dataset encompassing historical (extinct) and extant populations from the eastern North Atlantic to the entire Mediterranean Basin. We show that Western-Sahara/Mauritania (Cabo Blanco), Madeira, Western Mediterranean (historical range) and Eastern Mediterranean regions segregate in four populations. This structure is likely the consequence of recent drift, combined with long-term isolation by distance (R2 = 0.7), resulting from prevailing short-distance (< 500 km) and infrequent long-distance dispersal (< 1,500 km). All populations (Madeira especially), show high levels of inbreeding and low levels of genetic diversity, seemingly declining since historical time, but surprisingly not being impacted by the 1997 massive die-off in Cabo Blanco. Approximate Bayesian Computation analyses support a scenario combining local extinctions and a major effective population size decline in all populations during Antiquity. Our results suggest that the early densification of human populations around the Mediterranean Basin coupled to the development of seafaring techniques were the main drivers of the decline of Mediterranean monk seals.

show abstract

“…For example, Rosel et al (2003) hypothesized that porpoises from 115 the Aegean and Black Seas could belong to distinct subpopulations. Genetic analyses of the 116 mitochondrial control-region lent some support for this hypothesis with subtle but statistically 117 significant differences (Viaud-Martinez et al, 2007) or between those from the Marmara and Black Seas 118 (Tonay et al, 2017). However, these observations were based on a small sample size and a single locus.…”

mentioning

confidence: 99%

Genetic homogeneity in face of morphological heterogeneity in the harbor porpoises from the Black Sea and adjacent waters

Chehida

Thumloup

Vishnyakova

et al. 2019

Preprint

View full text Add to dashboard Cite

21 subdivision, genetic panmixia, grey zone of differentiation, endemic cetacean 22 23 24 42 rather than just genetics. 43 44 65 of Ne and m. These scenarios range from a rate of migratory exchange high enough to lead to both 66 genetic and demographic homogeneity among (sub-)populations, even with limited effective sizes, to 67 nearly negligible migratory exchanges among populations exhibiting large effective sizes. Gagnaire et 68 al. (2015) and Bailleul et al. (2018) described these effects and showed that the incomplete lineage 69 sorting of populations can be considered as the homologous version at an intraspecific level of the "grey 70 zone" of speciation described by De Queiroz (2007). This "grey zone" represents the lag during which, 71 lineage sorting being incomplete, species delimitation is not possible based solely on the genetic 72 information (Gagnaire Bailleul et al., 2018). This concept of "grey zone" of population 73 differentiation was coined by Bailleul et al. (2018) as the number of generations after a population split 74 for genetic drift to change the allele frequencies in each diverging population and reach an equilibrium 75 between migration and genetic drift (Epps and Keyghobadi, 2015). During that period, a time-lag 76 between genetic and demographic structure occurs, and no decision can be made from genetic data to 77 assess whether two groups are demographically independents based solely on genetic data. The length 78

show abstract

Is there a distinct harbor porpoise subpopulation in the Marmara Sea?

Cited by 6 publications

References 20 publications

The antique genetic plight of the Mediterranean monk seal ( Monachus monachus )

The antique genetic plight of the Mediterranean monk seal ( Monachus monachus )

The antique genetic plight of the Mediterranean monk seal (Monachus monachus)

Genetic homogeneity in face of morphological heterogeneity in the harbor porpoises from the Black Sea and adjacent waters

Contact Info

Product

Resources

About