Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean
7 páginas, 2 figuras, 4 tablas
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| Language: | English |
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Consejo Superior de Investigaciones Científicas (España)
2010-08-30
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| Subjects: | Red and blue shrimp, Aristeus antennatus, mtDNA, 16S rDNA, Gene flow, Depth distribution, Western Mediterranean, Metapopulation, |
| Online Access: | http://hdl.handle.net/10261/27308 |
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dig-icm-es-10261-273082020-11-24T08:23:20Z Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean Influencia de la estructura genética de la gamba rosada, Aristeus antennatus (Risso, 1816) en la sostenibilidad de su población a través del gradiente de profundidad en el mediterráneo occidental Sardà, Francisco Roldán, María Inés Heras, Sandra Maltagliati, Ferruccio Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation 7 páginas, 2 figuras, 4 tablas [EN] The red and blue shrimp, Aristeus antennatus, inhabits deep shelf waters in the Mediterranean Sea, where the shallower portion of its distribution supports a large commercial fishery. Recent prospecting surveys in the western Mediterranean have detected virgin stocks dwelling at more than 1000 m, but the extent of gene flow between the exploited shallow-dwelling stock and the deep-dwelling stock is unknown. To investigate the genetic structure of the population and estimate the depth component of gene flow, a portion of the mitochondrial DNA 16S gene (547 pb) was sequenced for 321 individuals from four different depths (350, 700, 1100 and 1500 m) at a location in the Catalan Sea. Haplotype and nucleotide diversity values were low and did not significantly differ across depths. Analysis of molecular variance showed no significant genetic differences between depths. Mismatch distribution and neutrality tests indicated that A. antennatus has undergone recent demographic expansion in the two shallowest layers. Our results suggest that the species is genetically structured as a sort of metapopulation in which gene flow that occurs during the larval and juvenile stages, when larvae are carried downstream and juveniles are carried upstream by cascading, plays an important role in the resilience of the exploited layers [ES] La gamba rosada Aristeus antennatus habita las aguas profundas del Mar Mediterráneo, donde los stocks de aguas más someras soportan una importante presión pesquera. Recientes campañas de prospección llevadas a cabo en el Mediterráneo Occidental han detectado stocks vírgenes a más de 1000 m de profundidad, pero se desconoce el flujo génico entre estos stocks y los menos profundos. Con el fin de investigar la estructura genética de dichos stocks, y estimar el componente de flujo génico entre ellos, se secuenció una porción de ADN mitocondrial, el gen 16S (547 bp) en 321 individuos procedentes de cuatro profundidades (350, 700, 1100 y 1500 m) de una localidad del mar Catalán. Los valores de diversidad haplotípica y nucleotídica fueron bajos y no resultaron significativos entre profundidades. El análisis de la varianza molecular tampoco mostró diferencias significativas entre profundidades. La distribución mismatch y los tests de neutralidad indicaron que A. antennatus tuvo una expansión demográfica reciente en las dos fracciones menos profundas. Nuestros resultados sugieren que la gamba rosada está genéticamente estructurada como una metapoblación donde el flujo génico ocurre, en parte, mediante la deriva de larvas y de juveniles, cuando éstos últimos aparecen en las zonas menos profundas en los períodos siguientes al cascading. Este aspecto juega un rol importante en la capacidad de recuperación de los stocks explotados Financial support for this work was provided by grant no. CTM2006-00785 to MIR Peer reviewed 2010-08-27T11:18:00Z 2010-08-27T11:18:00Z 2010-08-30 artículo http://purl.org/coar/resource_type/c_6501 Scientia Marina 74(3): 569-575 (2010) 0214-8358 http://hdl.handle.net/10261/27308 10.3989/scimar.2010.74n3569 1886-8134 en https://doi.org/10.3989/scimar.2010.74n3569 open 412257 bytes application/pdf Consejo Superior de Investigaciones Científicas (España) |
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Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation |
| spellingShingle |
Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation Sardà, Francisco Roldán, María Inés Heras, Sandra Maltagliati, Ferruccio Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| description |
7 páginas, 2 figuras, 4 tablas |
| format |
artículo |
| topic_facet |
Red and blue shrimp Aristeus antennatus mtDNA 16S rDNA Gene flow Depth distribution Western Mediterranean Metapopulation |
| author |
Sardà, Francisco Roldán, María Inés Heras, Sandra Maltagliati, Ferruccio |
| author_facet |
Sardà, Francisco Roldán, María Inés Heras, Sandra Maltagliati, Ferruccio |
| author_sort |
Sardà, Francisco |
| title |
Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| title_short |
Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| title_full |
Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| title_fullStr |
Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| title_full_unstemmed |
Influence of the genetic structure of the red and blue shrimp, Aristeus antennatus (Risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western Mediterranean |
| title_sort |
influence of the genetic structure of the red and blue shrimp, aristeus antennatus (risso, 1816), on the sustainability of a deep-sea population along a depth gradient in the western mediterranean |
| publisher |
Consejo Superior de Investigaciones Científicas (España) |
| publishDate |
2010-08-30 |
| url |
http://hdl.handle.net/10261/27308 |
| work_keys_str_mv |
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