Overview
ABSTRACT
This process sheet aims to introduce a marine animal that is not only complex, rich and fascinating in terms of its journey, but also a source of concern given the fragility of the marine ecosystem. Oysters are special marine animals in more ways than one. Their consumption dates back to ancient Rome, and natural oyster farming has continued to develop on the Atlantic coast and part of the Mediterranean coast. However, since the introduction of triploid oysters, resulting from chromosomal manipulation, the profession has split into two clans, whose cohabitation is more than difficult. This is a real challenge that is looming, while due to pollution and global warming, epidemics are increasing in a worrying manner.
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Jean-Luc BOUTONNIER: Retired process engineering and food science teacher, Souel
INTRODUCTION
It was the Chinese who invented oyster cultivation, later taken up by the Romans and then the French in the 16th century. The priority is to respect the sea, which is subject to all kinds of man-made pollutants. To be an oyster farmer is above all to share a passion for the sea and its fruits. Resilience in the face of climatic and environmental challenges is paramount. Precision and technical know-how, particularly in marine biology, are indispensable assets. Mastery of rearing techniques, maturation in claires, and knowledge of tidal cycles are also essential to guarantee oyster quality. The oyster farmer supervises the complete life cycle and reproduction of the oyster, from the fragile larva to the ready-to-serve oyster. The process begins with spat collection using sea collectors, followed by rearing in oyster beds. Refining, essential for developing the unique taste of each oyster, whether hollow or flat, takes place in the open sea or in specially equipped basins. Harvesting, grading and marketing are the culmination of this meticulous process.
The oyster farming profession requires a great deal of self-sacrifice in the face of arduous working conditions in an environment that is often hostile because it is wet, windy and salty, combined with a healthy dose of passion. The aim of this fact sheet is to shed light on the oyster farming industry, which is entering a new era with an industrial approach based on the production of triploid oysters, in total opposition to the production of natural oysters, based on respect for the animals and their environment.
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KEYWORDS
oyster | pearl | tetraploid | diploid | triploid
Oysters
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Bibliography
- (1) - NFM (Normandie fraîcheur mer) - La pêche en Normandie – Techniques de pêche. - https://www.normandiefraicheurmer.fr/la-peche-en-normandie/techniques-de-peche/entry-5-casiers.html
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