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Optimizing the design of giant scallop (Placopecten magellanicus) spat collectors: field experiments

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Abstract

Field experiments were carried out in 1991 and 1992 in the Gulf of St. Lawrence (Québec, Canada) to examine the influence of various structural components of spat collectors on recruitment of the giant scallop (Placopecten magellanicus) and associated species. Components considered were monofilament diameter, heterogeneity (presence of knots), mesh size of external bags combined with monofilament density, and spatial arrangement of monofilament inside collectors. P. magellanicus spat were more abundant in collectors made with bags of intermediate mesh size (0.4x0.5 cm) containing low densities (2030 cm2) of monofilament than in other types of collectors. significant variations in spat numbers were, however, observed with other taxa such as Mytilidae, Hiatella arctica, Cerastoderma pinnulatum, Mya arenaria, Anomia simplex, Tellina sp., Veneridae, Dacrydium vitreum, Mactridae, Buccinidae, Littorina sp., Ostracoda and Foraminifera. Abundance of scallop spat did not vary significantly with spatial arrangement, diameter and heterogeneity of monofilament.

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Authors and Affiliations

  1. GIROQ, Département de Biologie, Université Laval, G1K 7P4, Ste-Foy, Québec, Canada

    F. Pouliot & E. Bourget

  2. Institut Maurice-Lamontagne, Ministère des Pêches et des Ocèans, C.P. 1000, Mont-Joli, Québec, G5H 3Z4, Canada

    M. Fréchette

Authors
  1. F. Pouliot
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  2. E. Bourget
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  3. M. Fréchette
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Communicated by: R. J. Thompson, St. John's

Contribution to the program of GIROQ (Groupe Interuniversitaire de Recherches Océanographiques du Québec) and REPERE (Recherche sur le Pétoncle à des fins d'Élevage et de Repeuplement).

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Pouliot, F., Bourget, E. & Fréchette, M. Optimizing the design of giant scallop (Placopecten magellanicus) spat collectors: field experiments. Marine Biology 123, 277–284 (1995). https://doi.org/10.1007/BF00353619

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  • DOI: https://doi.org/10.1007/BF00353619

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