Genetic Diversity and Dispersal Capabilities in Marine Fish

Planes, Serge

doi:10.1007/978-1-4899-1751-5_7

Cited by 16 publications

(15 citation statements)

References 98 publications

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“…Both species are euryhaline and eurythermic, and have a wide distribution: N. integer occurs along the NE Atlantic from the Baltic Sea to the North African coasts of Morocco (Tattersall & Tattersall, 1951) and M. slabberi is distributed from the western Baltic, the NE Atlantic, up to the entire Mediterranean, Marmara, Black and Azov Seas (30-59°N, 10°W-1°E) (Wittmann, 1992). This wide distribution of both species spanning different biogeographical regions (Subarctic, Celtic, Lusitanian & Mediterranean region, cfr Adey & Steneck, 2001) with varying environmental conditions, combined with the limited dispersal capacities of these mysids (brooding behavior and lack of free-living larvae), may be expected to produce differences in both molecular and morphological traits among populations (Planes, 1998;O'Reilly & Horn, 2004).…”

Section: Introductionmentioning

confidence: 97%

Morphological Differentiation Between Geographically Separated Populations of Neomysis integer and Mesopodopsis slabberi (Crustacea, Mysida)

2005

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Morphological variation was examined in Neomysis integer and Mesopodopsis slabberi, two abundant, low dispersal mysid species (Crustacea, Mysida) along the European coasts. Both species dominate the hyperbenthic communities in the northeast Atlantic, and M. slabberi is also widely distributed in the Mediterranean and Black Sea. Three populations of these species were sampled throughout their distribution range; samples of N. integer were collected in the northeast Atlantic Eems-Dollard, Gironde and Guadalquivir estuaries; in the case of M. slabberi, mysids were sampled in two northeast Atlantic estuaries (Eems-Dollard and Guadalquivir) and one Mediterranean site (Ebro Delta). A total of 12 morphometric and 2 meristic characters were measured from 30-64 mysids per sample. Multivariate analysis showed clear morphometric differences between populations of both species. The morphological differentiation within M. slabberi was highly concordant with the available genetic data from mitochondrial loci, pointing to a large divergence between the Atlantic and Mediterranean populations. However, due to some overlap of individuals between the different populations, the present morphometric analysis does not suffice to assign the different populations to a separate (sub)species status. In the case of N. integer, the morphometric patterns showed a divergence of the Gironde population. Differentiation of populations within this mysid, as in M. slabberi, were mainly related to eye and telson morphology. Potential interactions of the mysid morphology and environmental conditions are discussed.

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Section: Introductionmentioning

confidence: 97%

Morphological Differentiation Between Geographically Separated Populations of Neomysis integer and Mesopodopsis slabberi (Crustacea, Mysida)

2005

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“…Não foram encontrados dados sobre a estratégia reprodutiva desta espécie, mas a espécie próxima A. triostegus (Linnaeus, 1758) apresenta uma fecundidade estimada de 100.000 ovos e um tempo de duração do período larval de 60 dias (Planes, 1998).…”

Section: Espécies Estudadasunclassified

“…Praticamente metade das espécies de vertebrados é constituída por peixes, que ocupam a maioria dos hábitats aquáticos, possuem grande mobilidade e muitas estratégias de reprodução (Planes, 1998). Os ambientes recifais abrigam as comunidades de peixes mais diversas (LoweMcConnel, 1999).…”

Section: Introductionunclassified

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Estruturação Genética das Populações de Duas Espécies de Peixes Recifais do Atol das Rocas e da Costa do Ceará.

2003

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O Atol das Rocas, que recentemente foi declarado pela UNESCO patrimônio natural da humanidade, é o único do Atlântico Sul e dista 144 milhas náuticas (266,68 Km) da costa brasileira. A corrente predominante nesta localidade é a Sul Equatorial que se estende até a costa do Ceará e posteriormente da origem a corrente das Guianas. As condições oceanografias e estratégias reprodutivas das várias famílias de peixes associados aos recifes de Rocas e da Costa do Ceará podem influenciar na dispersão larval e, conseqüentemente, caracterizar a estruturação genética dessas populações. Foram analisadas geneticamente populações do Atol das Rocas e Costa do Ceará, de duas espécies de peixes recifais com desova pelágia e longo período de duração larval. São elas: Acanthurus chirurgus e Cephalopholis fulva. A metodologia utiliza foi eletroforese de isoenzimas. Para A. chirurgus os resultados indicaram a presença de estoques pesqueiros diferenciados entre as duas populações. O mesmo não foi encontrado para as populações de C. fulva que apresentaram fluxo gênico irrestrito. Palavras-chave: Acanthurus chirurgus, Cephalopholis fulva, disperção larval, fluxo gênico, isoenzimas, Atol das Rocas.

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“…hectoris exhibits very low levels of allozyme variation when compared with studies conducted on other marine teleosts. Planes (1998) summarized the results of some 230 genetic studies of marine teleosts and found the mean of estimated heteorozygosities to be 0.054 (range 0 -0.180), and the mean percentage polymorphism to be 20.08% (range 0 -75%). The values of heterozygosity for L. hectoris ranged between 0.003 and 0.005, whereas the mean percentage polymorphism ranged from 13.6 to 27.3%.…”

Section: Genetic Variationmentioning

confidence: 99%

Genetic and morphological variation of the lanternfish Lampanyctodes hectoris (Myctophiformes: Myctophidae) off southern Africa

Florence¹,

Hulley²,

Stewart³

et al. 2002

South African Journal of Marine Science

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Genetic Diversity and Dispersal Capabilities in Marine Fish

Cited by 16 publications

References 98 publications

Morphological Differentiation Between Geographically Separated Populations of Neomysis integer and Mesopodopsis slabberi (Crustacea, Mysida)

Morphological Differentiation Between Geographically Separated Populations of Neomysis integer and Mesopodopsis slabberi (Crustacea, Mysida)

Estruturação Genética das Populações de Duas Espécies de Peixes Recifais do Atol das Rocas e da Costa do Ceará.

Genetic and morphological variation of the lanternfish Lampanyctodes hectoris (Myctophiformes: Myctophidae) off southern Africa

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