Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)

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 the gastropod molluscs Osilinus atrata and O. sauci...

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Autores principales:	Ramírez, R, Tuya, F, Sánchez-Jerez, P, Fernández-Gil, C, Bersaga, P, Haroun, RJ, Henández-Brito, JJ
Formato:	info:eu-repo/semantics/article
Lenguaje:	eng
Publicado:	Iniversidad Autónoma de Baja California 2005
Materias:	gastropods Osilinus atrata Osilinus sauciatus population structure rocky intertidal zone gasterópodos estructura poblacional intermareal rocoso
Acceso en línea:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/35
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id	repositorioinstitucional-20.500.12930-7312
record_format	dspace
spelling	repositorioinstitucional-20.500.12930-73122023-05-09T14:30:48Z Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic) 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) Ramírez, R Tuya, F Sánchez-Jerez, P Fernández-Gil, C Bersaga, P Haroun, RJ Henández-Brito, JJ gastropods Osilinus atrata Osilinus sauciatus population structure rocky intertidal zone gasterópodos Osilinus atrata Osilinus sauciatus estructura poblacional intermareal rocoso 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 the gastropod molluscs Osilinus atrata and O. sauciatus along the rocky intertidal zone of the Canary Islands. Differences in the spatial 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 the bands from one island to another, though it was more frequent in the middle and high bands. Osilinus sauciatus was only found at the eastern islands and did not exhibit significant differences between the bands, even though 91.35% of the individuals appeared in 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 both species presented the largest mean sizes in the high band. 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 entre 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. 2005-03-06 2021-06-03T03:54:52Z 2021-06-03T03:54:52Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/35 10.7773/cm.v31i4.35 https://hdl.handle.net/20.500.12930/7312 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/35/17 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 31 No. 4 (2005); 697-706 Ciencias Marinas; Vol. 31 Núm. 4 (2005); 697-706 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	gastropods Osilinus atrata Osilinus sauciatus population structure rocky intertidal zone gasterópodos Osilinus atrata Osilinus sauciatus estructura poblacional intermareal rocoso
spellingShingle	gastropods Osilinus atrata Osilinus sauciatus population structure rocky intertidal zone gasterópodos Osilinus atrata Osilinus sauciatus estructura poblacional intermareal rocoso Ramírez, R Tuya, F Sánchez-Jerez, P Fernández-Gil, C Bersaga, P Haroun, RJ Henández-Brito, JJ Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
description	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 the gastropod molluscs Osilinus atrata and O. sauciatus along the rocky intertidal zone of the Canary Islands. Differences in the spatial 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 the bands from one island to another, though it was more frequent in the middle and high bands. Osilinus sauciatus was only found at the eastern islands and did not exhibit significant differences between the bands, even though 91.35% of the individuals appeared in 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 both species presented the largest mean sizes in the high band.
format	info:eu-repo/semantics/article
author	Ramírez, R Tuya, F Sánchez-Jerez, P Fernández-Gil, C Bersaga, P Haroun, RJ Henández-Brito, JJ
author_facet	Ramírez, R Tuya, F Sánchez-Jerez, P Fernández-Gil, C Bersaga, P Haroun, RJ Henández-Brito, JJ
author_sort	Ramírez, R
title	Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
title_short	Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
title_full	Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
title_fullStr	Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
title_full_unstemmed	Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)
title_sort	population structure and spatial distribution of the gastropod molluscs osilinus atrata and osilinus sauciatus in the rocky intertidal zone of the canary islands (central east atlantic)
publisher	Iniversidad Autónoma de Baja California
publishDate	2005
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/35
_version_	1792609596918988800

Population structure and spatial distribution of the gastropod molluscs Osilinus atrata and Osilinus sauciatus in the rocky intertidal zone of the Canary Islands (Central East Atlantic)

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