Optimizing the design of giant scallop (Placopecten magellanicus) spat collectors: field experiments
✍ Scribed by F. Pouliot; E. Bourget; M. Fréchette
- Publisher
- Springer-Verlag
- Year
- 1995
- Tongue
- English
- Weight
- 886 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
Field experiments were carried out in 1991 and 1992 in the Gulf of St. Lawrence (Qu6bec, 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. magellanieus spat were more abundant in collectors made with bags of intermediate mesh size (0.4 x 0.5 cm) containing low densities (2030 cm 2) of monofilament than in other types of collectors. Significant variations in spat numbers were, however,