Leigné-les-Bois: des fayères à brochets pour sauver l'espèce

Groupe NR

A Leigné-les-Bois, entre Châtellerault et La Roche-Posay, la fédération de pêche de la Vienne entretient des frayères à brochets. Chaque année, elles sont vidées de leurs alevins qui vont ensuite repeupler les rivières du département.

Transcript

00:00So this is an operation to drain the pool of pike growth.

00:08So we opened the last pool last night, so that the pike come out in the fishery,

00:17which is next door.

00:19We receive them in a net pocket, so that they do not touch the walls of the fishery,

00:23which is made of concrete.

00:25We collect them, we sort them, we separate them from the predatory insects that can damage them,

00:30from other animals present in the pool, such as tritons or tetras,

00:35which we will release in the natural environment too, but separately.

00:39The pike are conditioned in bags, pockets,

00:42where we put a third of water and two-thirds of oxygen,

00:45so that they can travel safely.

00:48And they are given back to the fishing companies,

00:50who will put them back on the streams, the departmental rivers.

00:54We have streams where the pike does not have reproduction problems,

00:57as said Kwe, in Mont,

01:00and on the other hand, we have streams where we know that the pike has trouble reproducing,

01:04and this is where we allocate this water from Alva,

01:07to compensate, to support the populations of local pike.

01:11So these are operations that take place at night,

01:13because the little pike is very fearful,

01:16and at the slightest movement, it could panic and die in two days.

01:20At night, it is quiet, there is very little movement around the pool,

01:23we are very careful not to make any noise, and no light around the pool.

01:27It feels safe, and it follows the movement of the jetties of the waters,

01:31and it arrives quietly in the pocket, where it is recovered.

01:36It is a net pocket, which is also fed with clear and oxygenated water,

01:41in order to calm them, to de-stress them, and also to avoid cannibalism,

01:45since they can have reactions of cannibalism,

01:48at this age, which are important,

01:50where we can lose a lot of fish in one night, just by cannibalism.

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