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Estructura poblacional y distribución espacial de los moluscos gasterópodos Osilinus atrata y Osilinus sauciatus en el intermareal rocoso de las Islas Canarias (Atlántico centro-oriental)

Authors: Ramírez Cañada, Rubén; Tuya, F.; Sánchez-Jerez, Pablo; Fernández Gil, Cristina; Bergasa López, O.; Haroun, Ricardo; Hernández Brito, José Joaquín;

Estructura poblacional y distribución espacial de los moluscos gasterópodos Osilinus atrata y Osilinus sauciatus en el intermareal rocoso de las Islas Canarias (Atlántico centro-oriental)

Abstract

Por medio de un diseño de muestreo jerárquico se estudió la estructura poblacional y los patrones espaciales de variabilidad horizontal (diferencias entre las islas, las localidades dentro de las islas y los sitios dentro de localidades) y vertical (diferencias entre bandas de la zona intermareal) de los moluscos gasterópodos Osilinus atrata y O. sauciatus a lo largo del intermareal rocoso de las Islas Canarias. Se observaron diferencias en los patrones espaciales de distribución, abundancia y tamaño para ambas especies. Osilinus atrata fue más abundante que O. sauciatus en todo el Archipiélago Canario. Su abundancia varió entre las islas, presentando una distribución heterogénea entre las bandas intermareales de una isla a otra, si bien fue más frecuente en las bandas intermedia y superior. Osilinus sauciatus sólo se encontró en las islas orientales y no exhibió diferencias significativas\nentre las bandas, a pesar de que 91.35% de los individuos aparecieron en la banda superior y el resto en la banda intermedia. Osilinus sauciatus mostró una talla mayor que las de O. atrata. A su vez, ambas especies presentaron en general las mayores tallas medias en la banda superior.

A hierarchical sampling design was used to study the population structure and the horizontal (differences among islands,locations within islands and sites within locations) and vertical (differences among intertidal bands) distribution patterns of thegastropod molluscs Osilinus atrata and O. sauciatus along the rocky intertidal zone of the Canary Islands. Differences in thespatial patterns of abundance, size and distribution were recorded for both species. Osilinus atrata was more abundant than O.sauciatus throughout the archipelago. Its abundance varied among islands and it presented a heterogeneous distribution in thebands from one island to another, though it was more frequent in the middle and high bands. Osilinus sauciatus was only found atthe eastern islands and did not exhibit significant differences between the bands, even though 91.35% of the individuals appearedin the high band and the rest in the middle band. On the other hand, O. sauciatus had a larger mean size than O. atrata, but bothspecies presented the largest mean sizes in the high band.

El documento también está en inglés

0,364

SCIE

706

697

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Keywords

Osilinus sauciatus, Intermareal rocoso, Fauna intersticial, Gasterópodos, Gastropods, Rocky intertidal zone, 2401 Biología animal (zoología), 240210 Biología de poblaciones, Osilinus atrata, Population structure, Estructura poblacional

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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