Population genetics of the jumbo squid Dosidicus gigas (Cephalopoda: Ommastrephidae) in the northern Humboldt Current system based on mitochondrial and microsatellite DNA markers

Sánchez, Gustavo; Tomano, Satoshi; Yamashiro, Carmen; Fujita, Ricardo; Wakabayashi, T.; Sakai, Mitsuo; Umino, Tetsuya

doi:10.1016/j.fishres.2015.11.005

Cited by 21 publications

(4 citation statements)

References 49 publications

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“…For COX1 data, the nucleotide diversity (π) value of 0.0063 is similar to that for O. vulgaris (0.004) in the Atlantic [50]. Population-level values for h and π are consistent with general patterns for animal COX1 diversity (h = 0.7013, π = 0.0036) [51], but higher than values reported for other cephalopods [52].…”

Section: Genetic Diversitysupporting

confidence: 66%

Phylogeography of the insular populations of common octopus, Octopus vulgaris Cuvier, 1797, in the Atlantic Macaronesia

et al. 2020

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Exploited, understudied populations of the common octopus, Octopus vulgaris Cuvier, 1797, occur in the northeastern Atlantic (NEA) throughout Macaronesia, comprising the Azores, Madeira and Canaries, and also the Cabo Verde archipelago. This octopus species, found from the intertidal to shallow continental-shelf waters, is largely sedentary, and the subject of intense, frequently unregulated fishing effort. We infer connectivity among insular populations of this octopus. Mitochondrial control region and COX1 sequence datasets reveal two highly divergent haplogroups (α and β) at similar frequencies, with opposing clinal distributions along the sampled latitudinal range. Haplogroups have different demographic and phylogeographic patterns, with origins related to the two last glacial maxima. F ST values suggest a significant differentiation for most pairwise comparisons, including insular and continental samples, from the Galicia and Morocco coasts, with the exception of pairwise comparisons for samples from Madeira and the Canaries populations. Results indicate the existence of genetically differentiated octopus populations throughout the NEA. This emphasizes the importance of regulations by autonomous regional governments of the Azores, Madeira and the Canaries, for appropriate management of insular octopus stocks.

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Section: Genetic Diversitysupporting

confidence: 66%

Phylogeography of the insular populations of common octopus, Octopus vulgaris Cuvier, 1797, in the Atlantic Macaronesia

et al. 2020

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“…Similar historical demography patterns were found in the chub mackerel from Taiwan (Tzeng et al 2007), China (Yan et al 2015 and other scombrids of other latitudes (Ely et al 2005, Theisen et al 2008, Tzeng 2007. Molecular genetic studies in pelagic fishery resources of the Humboldt Current System such as jack mackerel Trachurus murphyi (Cárdenas et al 2009), squid Doryteuthis gahi (Ibañez et al 2012) and jumbo squid Dosidicus gigas (Ibañez et al 2011, Sanchez et al 2016 have shown similar population histories. Despite of these species have different life-history traits, it is feasible to recognize that Pleistocene climatic oscillations are among the most influential factors in the historical demography of marine resources in the Humboldt Current System.…”

Section: Discussionmentioning

confidence: 99%

High genetic connectivity and Population Expansion of Scomber japonicus in the Northern Humboldt Current System revealed by mitochondrial D-Loop region sequences

2017

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La caballa, Scomber japonicus soporta una pesquería importante en el Pacífico Sudeste, sin embargo, su genética de poblaciones se desconoce actualmente. En el presente estudio se examinó la estructura genética, el flujo génico y la demografía histórica de esta especie en la parte norte del Sistema de la Corriente de Humboldt. Las muestras fueron colectadas en los veranos del 2013 y 2014 en tres puntos de desembarco de pesca (Paita, Ventanilla e Ilo) cubriendo 12 grados de latitud frente a la costa peruana. Se secuenció un segmento de 532 pb de la región control mitocondrial en 72 individuos, el cual permitió detectar un total de 29 sitios polimórficos, 35 haplotipos, niveles moderados altos de diversidad haplotípica (0.793 – 0.969) y muy bajos niveles de diversidad nucleotídica (0.004 – 0.008). El análisis de flujo génico mostró altos niveles de conectividad entre las poblaciones en las áreas de muestreo. El análisis de varianza molecular (ФST = 0.00868, P = 0.1837), las comparaciones ФST a pares de poblaciones y las pruebas de diferenciación genética confirmaron la carencia de estructuración genética entre las tres localidades. Estos análisis sugieren que los sitios de muestreo analizados pueden ser considerados como un solo grupo genético. El comportamiento migratorio, el alto potencial de dispersión de los estadios tempranos de desarrollo y la ausencia de barreras oceanográficas pueden explicar su homogeneidad genética a lo largo del mar peruano. También se examinó la demografía histórica. Las pruebas de neutralidad, la distribución mismatch y el Bayesian Skyline Plot sugirieron un escenario de expansión poblacional que tuvo lugar durante el Pleistoceno Superior. Este estudio provee información nueva con respecto a la genética de poblaciones de la caballa en el Pacífico Sudeste.

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“…The rate of coalescent events within it can be used to infer how the population size changed over time: periods of low coalescent rates imply a large population while a high density of coalescences implies a small population. Although skyline plots have been used to reconstruct demographic histories for extant and extinct species (Stiller et al, 2010), and across taxa that include vertebrates (Lu et al, 2012; Vignaud et al, 2014), invertebrates (Sanchez et al, 2016; Villalta et al, 2018) and even bacteria (Segawa et al, 2018), comparative multispecies studies are only now emerging (Burbrink et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Bayesian Skyline Plots disagree with range size changes based on Species Distribution Models for Holarctic birds

Green

Balmford

et al. 2021

Molecular Ecology

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During the Quaternary, large climate oscillations impacted the distribution and demography of species globally. Two approaches have played a major role in reconstructing changes through time: Bayesian Skyline Plots (BSPs), which reconstruct population fluctuations based on genetic data, and Species Distribution Models (SDMs), which allow us to back‐cast the range occupied by a species based on its climatic preferences. In this paper, we contrast these two approaches by applying them to a large data set of 102 Holarctic bird species, for which both mitochondrial DNA sequences and distribution maps are available, to reconstruct their dynamics since the Last Glacial Maximum (LGM). Most species experienced an increase in effective population size (Ne, as estimated by BSPs) as well as an increase in geographical range (as reconstructed by SDMs) since the LGM; however, we found no correlation between the magnitude of changes in Ne and range size. The only clear signal we could detect was a later and greater increase in Ne for wetland birds compared to species that live in other habitats, a probable consequence of a delayed and more extensive increase in the extent of this habitat type after the LGM. The lack of correlation between SDM and BSP reconstructions could not be reconciled even when range shifts were considered. We suggest that this pattern might be linked to changes in population densities, which can be independent of range changes, and caution that interpreting either SDMs or BSPs independently is problematic and potentially misleading.

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Population genetics of the jumbo squid Dosidicus gigas (Cephalopoda: Ommastrephidae) in the northern Humboldt Current system based on mitochondrial and microsatellite DNA markers

Cited by 21 publications

References 49 publications

Phylogeography of the insular populations of common octopus, Octopus vulgaris Cuvier, 1797, in the Atlantic Macaronesia

Phylogeography of the insular populations of common octopus, Octopus vulgaris Cuvier, 1797, in the Atlantic Macaronesia

High genetic connectivity and Population Expansion of Scomber japonicus in the Northern Humboldt Current System revealed by mitochondrial D-Loop region sequences

Bayesian Skyline Plots disagree with range size changes based on Species Distribution Models for Holarctic birds

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