Enzymatic and morphometric analyses in mediterranean populations of the rose shrimp, Aristeus antennatus (Risso, 1816)

Sardà, Francisco; Bas, Carles; Roldán, Marı́a Inés; Plá, Carles; Lleonart, Jordi

doi:10.1016/s0022-0981(97)00119-6

Cited by 35 publications

(28 citation statements)

References 21 publications

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“…Roldán et al (2009) and Maggio et al (2009) obtained comparable values of haplotypic diversity in the Western and Central Mediterranean Sea (h = 0.624 ± 0.050 for concatenated 16S rDNA and COI; h = 0.884 to 0.989 for control region, respectively). These estimates of genetic variability are higher than allozyme variability previously detected in Aristeus antennatus across its Atlantic-Mediterranean distribution (Sardà et al 1998), due to higher resolution power of markers employed.…”

Section: Genetic Diversitymentioning

confidence: 58%

“…Significant morphological differences have been observed in individuals from the 2 basins. However, no allozyme divergence was found (Sardà et al 1998) and the differences were explained as being a response to hydrological and ecological characteristics of the 2 Mediterranean basins (Sarà 1985). Recently, new molecular markers (microsatellites, Cannas et al 2008; mitochondrial control region, Maggio et al 2009; 16S rDNA and cytochrome c oxidase subunit I [COI], Roldán et al 2009, Sardà et al 2010 were developed for the species, but until now their application has been limited to the Western and Central Mediterranean (Maggio et al 2009, Roldán et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers

Fernández¹,

Heras²,

Maltagliati³

et al. 2011

Mar. Ecol. Prog. Ser.

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The blue and red shrimp Aristeus antenantus supports an important commercial fishery in the Western Mediterranean, adjacent Atlantic waters and Mozambique Channel (western Indian Ocean). This study investigates its genetic structure by examining a total of 506 individuals from Mediterranean, Atlantic and Indian Ocean locations. In order to identify putative genetic stocks, sequences from 16S rDNA (546 bp) and COI (514 bp) genes were used. Genetic diversity, estimated by haplotypic and nucleotidic diversity, was lower in the Western Mediterranean than in samples from other locations. The high haplotypic diversity of the Eastern Mediterranean, Atlantic and Indian Ocean samples reflects the occurrence of a number of private haplotypes, which are also responsible for significant genetic divergence between these samples and the Western Mediterranean ones. The analysis of mismatch distributions, neutrality tests, and star-like patterns present in the network of haplotypes provided consistent inference of past population expansion in the Western Mediterranean, Atlantic and Mozambique Channel regions. Our study provides the first evidence of genetic structuring in A. antennatus across its distributional range.KEY WORDS: Aristeus antennatus · COI · 16S rDNA · Genetic structure · Atlantic Ocean · Mediterranean Sea · Western Indian Ocean Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 421: [163][164][165][166][167][168][169][170][171] 2011 roboration of Atlantic-Mediterranean differentiation has been provided by multiple examples of the population structure of marine species, from pioneer work on crustaceans (Chthamalus montagui, Dando & Southward 1981), mollusks (Mytilus galloprovincialis, Quesada et al. 1995a,b; Sepia officinalis, Pérez-Losada et al. 1999) and fishes (Platichthys flesus, Borsa et al. 1997; Merluccius merluccius, Roldán et al. 1998) down to the present day.The blue and red shrimp Aristeus antennatus (Risso, 1816) is an important commercial deep-sea species that inhabits the Mediterranean, northeast Atlantic waters from Portugal to the Cape Verde Islands (Holthuis 1980), and the Indian Ocean from the Maldive Islands to Zanzibar, Mozambique and South Africa (Freitas 1985). In recent years, it has also been recorded off the northern coasts of Brazil (Serejo et al. 2007). A. antennatus is a eurybathic species ranging from 80 to 3300 m depth, with peaks of abundance at 600 to 900 m depth (Campillo 1994, Sardà et al. 2004). Its abundance is also geographically variable, with density in the Western Mediterranean being higher than that in the eastern basin ). Significant morphological differences have been observed in individuals from the 2 basins. However, no allozyme divergence was found (Sardà et al. 1998) and the differences were explained as being a response to hydrological and ecological characteristics of the 2 Mediterranean basins (Sarà 1985). Recently, new molecular markers (microsatellites, Cannas et al. 2008; mitochondrial control region, ...

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Section: Genetic Diversitymentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers

Fernández¹,

Heras²,

Maltagliati³

et al. 2011

Mar. Ecol. Prog. Ser.

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“…However, the plasticity shown by the populations from lake Amanã (black water) and lake Mamirauá (white water) that presented a percentage of individuals reclassified in opposite environments seems to contradict such trend in the reclassification. Morphometric differences and variability in morphologic characteristics as possible adaptive responses to the environment have been reported in the literature for other populations of crustaceans (AMAT et al, 1995;CUESTA & SCHUBART, 1998;DANIELS et al, 1998;GRANDJEAN et al, 1998;SARDA et al, 1998;SCAPINI et al, 1999).…”

Section: Discriminant Function 1 Discriminant Functionmentioning

confidence: 88%

Morphometric variability in populations of Palaemonetes spp. (Crustacea, Decapoda, Palaemonidae) from the Peruvian and Brazilian Amazon Basin

García-Dávila

Magalhães

Hurtado-Guerrero

2005

Iheringia, Sér. Zool.

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ABSTRACT. Morphometric variability among shrimp populations of the genus Palaemonetes Heller, 1869 from seven lakes (Huanayo and Urcococha, in Peru; Amanã, Mamirauá, Camaleão, Cristalino e Iruçanga, in Brasil) in the Amazon Basin, presumably belonging to Palaemonetes carteri Gordon, 1935 and Palaemonetes ivonicus Holthuis, 1950, were studied. The morphometric studies were carried out from the ratios obtained from the morphometric characters. Multivariated analysis (Principal Components Analysis-PCA, Discriminant Function Analysis and Cluster Analysis) were applied over the ratios. Intra-and interpopulation variations of the rostrum teeth, and the number of spines in the male appendix, were analyzed through descriptive statistics and bivariate analysis (Spearman Rank Correlation test). Results indicated a wide plasticity and overlapping in the studied ratios between populations. The Principal Components Analysis was not able to separate different populations, revealing a large intrapopulation plasticity and strong interpopulation similarity in the studied ratios. Although the Discriminant Functions Analysis was not able to fully discriminate populations, they could be allocated in three subgroups: 1) Cristalino and Iruçanga; 2) Huanayo, Urcococha and Camaleão and 3) Mamirauá and Amanã. The first two groups were morphometrically separated from each other, whereas the third one presented a strong overlap with the former two. The Cluster Analysis confirmed the first two subgroups separation, and indicated that the first and third groups were closely related. Rostrum teeth and number of spines in the appendix masculina showed a large intrapopulation variation and a strong overlapping among the studied populations, regardless of the species.KEYWORDS. Palaemonetes, morphometry, Amazon Basin, sibling species, freshwater shrimp. Holthuis, 1950. Os estudos morfométricos foram realizados a partir das razões obtidas dos caracteres morfométricos. Análise multivariada (análise de componentes principais, análise de função discriminante e análise de agrupamento hierárquico) foram aplicadas unicamente sobre as razões. Variações intra-e interpopulacionais do número de dentes de rostro, assim como do número de espinhos no apêndice masculino, foram analisadas mediante estatística descritiva e análise bivariada (teste de Spearman). Os resultados indicaram uma grande plasticidade e sobreposição nos caracteres diagnósticos entre as populações. A análise de componentes principais não conseguiu separar as diferentes populações, revelando uma grande plasticidade intrapopulacional e forte semelhança interpopulacional nas razões estudadas. Embora a análise de funções discriminantes não tenha logrado discriminar completamente as populações, estas ficaram alocadas em três subgrupos: 1) Cristalino e Iruçanga; 2) Huanayo, Urcococha e Camaleão e 3) Mamirauá e Amanã. Os primeiros dois grupos ficaram morfologicamente separados entre si, enquanto que o terceiro apresentou uma forte sobreposição com os dois anteriores. A análise de agrupamento hie...

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“…This last image is partially in agreement with the variability, even if low, of vital parameter estimates as well as reproductive and morphometric features recorded in several sites within the Mediterranean basin. (GamulinBrida et al, 1972;Froglia and Gramitto, 1979, 1987Orsi Relini and Relini, 1989;Biagi et al 1990aBiagi et al , 1990bBiagi et al , 1990cMori et al, 1993Mori et al, , 1994Sardà, 1995;1998). Therefore, among the models of population genetic structure that have been developed to assist managers in predicting the consequences of the exploitation of a biological resource, N. norvegicus seems to fit the island model (Wright, 1931), in a background of consistent gene flow.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, recent genetic studies on Mediterranean populations of the pink shrimp, Aristeus antennatus, another decapod showing variability in morphometric traits, detected extensive genetic homogeneity (Sardà et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Estructura genética de la cigala <i>Nephrops norvegicus</i> (L., 1758) (Crustacea: Nephropidae), en el Mediterráneo

Maltagliati¹,

Camilli²,

Biagi³

et al. 1998

Sci. Mar.

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SUMMARY: The population genetic structure of the Mediterranean Norway lobster was studied by means of cellulose acetate allozyme electrophoresis. Populations from one Atlantic and eight Mediterranean localities were sampled. The 15 enzyme systems analysed gave 23 presumptive gene loci, 11 of which were polymorphic. The analysis of genotypic and allelic frequencies revealed levels of genetic polymorphism comparable with those of studied decapods: mean heterozygosities ranged from 0.052 (se 0.025) to 0.142 (se 0.040). The values of Nei's genetic distance index showed moderate genetic differentiation between geographical regions and no geographical pattern of genetic differentiation was detected by UPGMA cluster analysis. Moreover no clear clines in allelic frequencies were detected, thus genetic variability seems to be randomly distributed among populations and Nephrops norvegicus seems to follow the island model of genetic structure. The degree of genetic subdivision of the species is confirmed by the mean value of the standardised variance in allelic frequencies (F ST = 0.122), giving an estimate of gene flow, Nm = 1.80.Key words: Allozyme electrophoresis, genetic variation, genetic distance, population subdivision, island model, Nephrops norvegicus, crustaceans, Mediterranean. RESUMEN: ESTRUCTURA GENÉTICA DE LA CIGALA NEPHROPS NORVEGICUS (L., 1758) (CRUSTACEA: NEPHROPIDAE), EN EL MEDI-TERRÁNEO. -La estructura genética poblacional de la cigala (Nephrops norvegicus) se estudió mediante electroforesis alocímica en acetato de celulosa. Las muestras analizadas provienen de ocho localidades del Mediterráneo y una del Atlántico adyacente. En un total de 15 sistemas enzimáticos se detectaron 23 loci, de los cuales 11 resultaron polimórficos. La heterozigosis media detectada varía desde 0,052 (se 0,025) a 0,142 (se 0,040) y es similar a la observada para otros decápodos. Las distancias de Nei muestran una moderada diferenciación genética, sin embargo el análisis de agrupamiento UPGMA no revela ningún patrón geográfico. No se detectaron clinas en las frecuencias alélicas, la variabilidad genética parece presentar una distribución al azar y la estructura genética de la cigala parece seguir el modelo de insularidad. El valor promedio de F ST = 0,122 confirma un cierto grado de subdivisión genética e indica un flujo génico estimado de Nm = 1,80.

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Enzymatic and morphometric analyses in mediterranean populations of the rose shrimp, Aristeus antennatus (Risso, 1816)

Cited by 35 publications

References 21 publications

Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers

Genetic structure in the blue and red shrimp Aristeus antennatus and the role played by hydrographical and oceanographical barriers

Morphometric variability in populations of Palaemonetes spp. (Crustacea, Decapoda, Palaemonidae) from the Peruvian and Brazilian Amazon Basin

Estructura genética de la cigala <i>Nephrops norvegicus</i> (L., 1758) (Crustacea: Nephropidae), en el Mediterráneo

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