Genetic diversity and demographic history of Dosidicus gigas (Cephalopoda: Ommastrephidae) in the Humboldt Current System

Ibáñez, Christian M.; Cubillos, Luis A.; Tafur, Ricardo; Argüelles, Juan; Yamashiro, Carmen; Poulin, Élie

doi:10.3354/meps09133

Cited by 40 publications

(39 citation statements)

References 76 publications

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“…Ibáñez et al (2011) investigated the genetic diversity and demographic history of Dosidicus gigas, a species that has attracted much recent attention because of its range shift (Keyl et al 2008). Analyses of data based on the COI barcode gene indicate that there is a single homogeneous population of Dosidicus gigas in the Humboldt Current System but this has undergone significant population expansion since the last glacial maximum (Ibáñez et al 2011). The changing geographic distribution of Dosidicus gigas has provoked intense study of this species and molecular identification of paralarvae has proved to be a useful technique.…”

Section: Downloaded By [North Dakota State University] At 16:39 19 Nomentioning

confidence: 99%

The contribution of molecular data to our understanding of cephalopod evolution and systematics: a review

Allcock

Lindgren

Strugnell

2014

Journal of Natural History

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Section: Downloaded By [North Dakota State University] At 16:39 19 Nomentioning

confidence: 99%

The contribution of molecular data to our understanding of cephalopod evolution and systematics: a review

Allcock

Lindgren

Strugnell

2014

Journal of Natural History

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“…Recent genetic evidence has shed light on the effects of glacial conditions. Specifically, postglacial recolonization along the coastline of south‐eastern Pacific (Cárdenas, Castilla, & Viard, ; Fraser et al., ; González‐Wevar et al., ; Macaya & Zuccarello, ; Sánchez, Sepúlveda, Brante, & Cárdenas, ) and a recent demographic expansion along the south‐eastern Pacific coast (Cárdenas et al., ; Haye, Salinas, Acuña, & Poulin, ; Ibáñez et al., , ) have occurred. Furthermore, some species, such as seaweeds (Fraser, Hay, Spencer, & Waters, ; Fraser et al., ; Macaya & Zuccarello, ) and marine invertebrates (Nuñez et al., ; Trovant, Orensanz, Ruzzante, Stotz, & Basso, ), also show phylogeographical breaks near the southern tip of South America.…”

Section: Introductionmentioning

confidence: 99%

Phylogeography and species distribution modelling reveal the effects of the Pleistocene ice ages on an intertidal limpet from the south‐eastern Pacific

Pardo‐Gandarillas

Ibáñez

Torres

et al. 2018

Journal of Biogeography

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Aim The distribution and genetic composition of marine populations is the result of climatic and oceanographic factors as well as life history strategies. Studying species with wide distributions and high dispersal potential in sites that were differentially affected during the Pleistocene glaciations provides an opportunity to evaluate the genetic and distributional effect of glaciations on marine populations, such as the limpet Siphonaria lesonii. The aim of the present study is to evaluate the differential effects of glaciations on areas covered and not covered by ice sheets during the Pleistocene glaciations. Location Intertidal zone of the south‐eastern Pacific covering approximately 5,000 km of coastline of Peru and Chile. Methods We performed molecular analyses of mitochondrial and nuclear data jointly, as well as environmental niche modelling (ENM) of populations of the limpet Siphonaria lessonii. Using ENM, we modelled the potential distributional range of the species in the present and its distribution during the Last Glacial Maximum (LGM). Results Two lineages were found that were separated by a break at 41° S, corresponding to the biogeographical discontinuity previously reported for this region. Both of these lineages experienced genetic and demographical fluctuations that match the Pleistocene glaciations; however, the variability was more intense in the southern lineage. Phylogeography and ENM yielded complementary results for the southern lineage, which experienced loss of genetic diversity and habitat during the LGM, whereas the northern lineage evidenced loss of genetic diversity without distributional changes. Main conclusions The phylogeographical and ENM approaches suggest a historical scenario involving demographic and distributional contractions of S. lessonii surviving in glacial refugia in the southern portion of the south‐eastern Pacific. This study is the first to include both phylogeographical and ENM analyses of marine species from the Southern Hemisphere.

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“…,b; Ibáñez et al . ). A lack of genetic structure has also been recorded in endoparasites of freshwater organisms such as Cestoda ( Ligula intestinalis) , which are present in cyprinid fish (the intermediate hosts) (Štefka et al .…”

Section: Discussionmentioning

confidence: 97%

Contrasting definitive hosts as determinants of the genetic structure in a parasite with complex life cycle along the south‐eastern Pacific

et al. 2015

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The spatial genetic structure (and gene flow) of parasites with complex life cycles, such as digeneans, has been attributed mainly to the dispersion ability of the most mobile host, which most often corresponds to the definitive host (DH). In this study, we compared the genetic structure and diversity of adult Neolebouria georgenascimentoi in two fish species (DHs) that are extensively distributed along the south-eastern Pacific (SEP). The analysis was based on the cytochrome oxidase subunit I gene sequences of parasites collected between 23°S and 45°S. In total, 202 sequences of N. georgenascimentoi in Pinguipes chilensis isolated from nine sites and 136 sequences of Prolatilus jugularis from five sites were analysed. Our results showed that N. georgenascimentoi is a species complex that includes three different parasite species; however, in this study, only lineage 1 and 2 found in P. chilensis and P. jugularis, respectively, were studied because they are widely distributed along the coastline. Lineage 1 parasites had two common haplotypes with wide distribution and unique haplotypes in northern sites. Lineage 2 had only one common haplotype with wide distribution and a large number of unique haplotypes with greater genetic diversity. Both lineages have experienced recent population expansion. Only lineage 1 exhibited a genetic structure that was mainly associated with a biogeographical break at approximately 30°S along the SEP. Our finding suggests that host access to different prey (=intermediate hosts) could affect the genetic structure of the parasite complex discovered here. Consequently, difference between these patterns suggests that factors other than DH dispersal are involved in the genetic structure of autogenic parasites.

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Genetic diversity and demographic history of Dosidicus gigas (Cephalopoda: Ommastrephidae) in the Humboldt Current System

Cited by 40 publications

References 76 publications

The contribution of molecular data to our understanding of cephalopod evolution and systematics: a review

The contribution of molecular data to our understanding of cephalopod evolution and systematics: a review

Phylogeography and species distribution modelling reveal the effects of the Pleistocene ice ages on an intertidal limpet from the south‐eastern Pacific

Contrasting definitive hosts as determinants of the genetic structure in a parasite with complex life cycle along the south‐eastern Pacific

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