Data/hora: 06/06/2024 10:43:38

Provedor de dados: | 5
País: | France
Título: | Performances d'élevage de la moule (Mytilus edulis) en Manche/Atlantique. Recensement et interprétation. 1 : Synthèse et rapport
Autores: | Rodriguez, Julien.
Data: | 2013-04-13
Ano: | 2013
Palavras-chave: | Mytiliculture; Bouchots; Moule; Mytilus edulis; Performances d’élevage; Bassins conchylicoles; Croissance; Décrochage; Mortalité; Byssus; Prédation; Réseaux; Sécheresse; Régimes de vents; Mussel farming; Bouchot; Mytilus edulis; Growth; Mortality; Byssus; Detachment; Meteorological conditions.
Resumo: | The objective of this study is to explain the decrease in mussel production, along the French coasts of Atlantic and the English Channel, through existing data and additional inquiries. This decrease in 2010 and 2011 had two components : a growth deficit and losses of mussels, due to detachment and mortality. Both inter-annual and geographic differences in rearing yields seem to be linked to phytoplankton abundance and turbidity. In 2011, severe droughts have impacted the level of rivers effluents to marine, limiting nutrients inputs. In 2010, frequent winds from east seem to have maintained the phytoplankton blooms away from the coasts. Detachment and mortalities of mussels might be due to physiological stress or weakening linked to poor environmental conditions (heat, lack of food). The high salinities consecutive to insufficient rains also favoured the presence of starfish in coastal mussel areas. Different factors still unexplained may induce a lack of spat collection.  A recommendation for making such investigations easier in the future is to implement a regular survey of rearing performances, at national level, through a standardised protocol.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00142/25341/23422.pdf

http://archimer.ifremer.fr/doc/00142/25341/

Formato: | application/pdf

Fonte:

2013 Ifremer

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