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Spatial patterns in the population structure of the whelk Stramonita haemastoma (Linnaeus, 1766) (Gastropoda: Muricidae) in the Canarian Archipelago (eastern Atlantic)
Ramírez, R.; Tuya, F.; Haroun, R.J. (2009). Spatial patterns in the population structure of the whelk Stramonita haemastoma (Linnaeus, 1766) (Gastropoda: Muricidae) in the Canarian Archipelago (eastern Atlantic). Sci. Mar. (Barc.) 73(3): 431-437. https://dx.doi.org/10.3989/scimar.2009.73n3431
In: Scientia Marina (Barcelona). Consejo Superior de Investigaciones Científicas. Institut de Ciènces del Mar: Barcelona. ISSN 0214-8358; e-ISSN 1886-8134, more
Peer reviewed article  

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Keywords
    Aquatic organisms > Heterotrophic organisms > Predators
    Distribution > Geographical distribution
    Spatial distribution
    Topographic features > Landforms > Coastal landforms > Rocky shores
    Stramonita haemastoma (Linnaeus, 1767) [WoRMS]
    ASE, Canary I. [Marine Regions]
    Marine/Coastal
Author keywords
    Stramonita haemastoma; predators; spatial distribution; rocky coasts;Canary Islands

Authors  Top | Dataset 
  • Ramírez, R.
  • Tuya, F.
  • Haroun, R.J.

Abstract
    The goal of this study was to determine the consistency of the vertical distribution patterns of the predatorywhelk, Stramonita haemastoma, in the rocky intertidal zone of the Canarian Archipelago (eastern Atlantic) across a hierarchy of five orders of magnitude of horizontal spatial variability (from tens of m to hundreds of km). In general, this species showed a consistent vertical zonation pattern across islands, with the majority of the specimens (74.65%) found in the mid intertidal zone. This result most likely reflects the whelk’s preference for a habitat with a large amount of potential prey but minimal stress induced by swells and desiccation. The mean abundance (0 to 1.73 ± 0.40 ind m-2, mean ± SE) and size structure (7 to 45 mm in shell length) of S. haemastoma in the Canarian Archipelago was considerably lower compared to those from continental areas in the Atlantic Ocean, which suggests that there are some differences between these populations. Natural mechanisms (e.g. isolation or poor recruitment events) and human perturbations (e.g. exploitation of intertidal resources) might influence the spatial distribution patterns.

Dataset
  • InvertebratesCCV: Invertebrates observations delivered by "Canarias por una Costa Viva" project, more

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