Assessment of an alternative Pinctada margaritifera spat collector in French Polynesia
| Autor: | C. Lo, M. Crusot, Nabila Gaertner-Mazouni |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Spat collectors
SH1-691 010501 environmental sciences Aquatic Science Pinctada maculata 01 natural sciences Pearl-farming Pinctada margaritifera Pinctada maculate 03 medical and health sciences Aquaculture Aquaculture. Fisheries. Angling 14. Life underwater 030304 developmental biology 0105 earth and related environmental sciences 0303 health sciences biology business.industry Pearl oyster biology.organism_classification Fishery 13. Climate action Litter Environmental science Animal Science and Zoology Plastic waste business |
| Zdroj: | Aquaculture Reports (2352-5134) (Elsevier BV), 2021-07, Vol. 20, P. 100751 (8p.) Aquaculture Reports, Vol 20, Iss, Pp 100751-(2021) |
| Popis: | Plastic waste in the oceans is a growing concern due to its size diversity, its ubiquitous nature and its impact on both marine organisms and ecosystems. While threatened by this marine plastic litter, the aquaculture industries also represent one of its major sources. In French Polynesia, black-lip pearl oyster (Pinctada margaritifera) farming is no exception. Wild spat collection has been described as a source of pollution because of the numerous particularly fragile and brittle shade-mesh plastic collectors used locally and often mismanaged when no longer usable. Thus, with the aim of helping to reduce this pollution, the present study is focused on the assessment of reusable plate collector as a potential alternative. We tested, using an in situ approach, the influence of the collecting surface position (i.e. horizontal vs vertical), plate color (i.e. black vs orange) and density (i.e. 25 plates vs 50 plates) on Pinctada margaritifera and Pinctada maculata spat settlement. Our results showed that 50-plates collectors, whatever their color and position, were more efficient to collect both kinds of spat than shade-mesh collectors (P 0.05). Finally, our results indicated that, among all the devices tested, the black horizontal 50-plates collector was the most efficient to collect spat and particularly Pinctada margaritifera. These first findings thus tend to suggest that these black re-usable plate collectors could be an efficient alternative to the currently used shade-mesh collectors. |
| Databáze: | OpenAIRE |
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