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Distribution spatiale de l'ichtyoplancton en été et en automne et conditions environnementales dans le golfe de Tunis OceanDocs
Romdhane, M.S.; El Abed, A.; Zarrad, R.; M’rabet, R.; Missaoui, H..
Pendant l’été et l’automne de l’année 2002, deux campagnes d’étude de l’ichtyoplancton ont été effectuées dans le golfe de Tunis. La température moyenne des eaux de surface a été de 25,51°c en été et 21,85°c en automne. Les œufs et les larves ont été plus abondants en été qu’en automne (360 œufs /10m² et 244 larves /10m² en été et 115 œufs /10m² et 174 larves /10m² en automne). Les paramètres environnementaux : température, salinité oxygène dissous, pH, chlorophylle a et abondance du mésozooplancton ne semblent pas avoir une influence directe sur la distribution spatiale de l’ichtyoplancton. Cependant, la bathymétrie semble avoir une influence sur cette distribution.
Tipo: Journal Contribution Palavras-chave: Mésozooplancton; Golfe de Tunis; Plankton; Zooplankton MED; Tunisia; Tunis Gulf Abundance Distribution Environmental factors Ichthyoplankton Zooplankton Distribution Environmental factors Zooplankton http://aims.fao.org/aos/agrovoc/c_35773 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2003 URL: http://hdl.handle.net/1834/1075
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Dynamique spatiale et interannuelle des communautés mésozooplanctoniques en Manche Orientale en lien avec l’introduction récente d’une espèce non-indigène : Mnemiopsis leidyi ArchiMer
Gravier, Nathan.
In the seas of southern Europe, Mnemiopsis leidyi is responsible for invasive events with worrying ecological consequences. Since 2005, this native of the east coast of the Americas is regularly observed in the English Channel in the Bay of Seine. In order to find out whether changes have taken place in the distribution of M. leidyi in the English Channel since the first reports made before 2014 and to identify the environmental conditions favourable to his presence, hydrological data and Channel Ground Fish Survey from 2014 to 2015 were analyzed. This confirmed that M. leidyi is well established in the Bay of Seine (naturalized species) but does not extend outside this area and therefore cannot be considered an invasive species for that region. The...
Tipo: Text Palavras-chave: Mnemiopsis leidyi; Espèce exotique envahissante; Manche; Mésozooplancton; Mnemiopsis leidyi; Invasive species; English Channel; Mesozooplankton.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00504/61551/65459.pdf
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Ecologie du copépode calanoïde Paracartia grani. Implication dans le cycle de vie du parasite Marteilia refringens dans la lagune de Thau ArchiMer
Boyer, Séverine.
In this study, the life cycle of Paracartia grani, a calalloid copepod belonging to the Acartiidae family was determined in Thau lagoon. Indeed, the copepod involvement in the life cycle of the parasite Marteilia refringens affecting the bivalve productions is suspected. Mesozooplanktonic community .was monitored twice a month. over two years at a fixed station in the lagoon. Sampling has identified P. grani as the acartiid dominant species in summer. From April to January, the copepod is found in the water column while from February to early April it remains in the sediment as diapausing eggs. The analysis of the population structure (size spectmm, contribution of developmental stages and sex ratio) has revealed that there are in between 6 and 9...
Tipo: Text Palavras-chave: Paracartia grani; Cycle de vie; Production d'oeufs; Oeufs de diapause; Mésozooplancton; Marteilia refringens; Mytilus galloprovincialisa; Ruditapes decussatus; PCR; Hybridation in situ; Lagune de Thau; Paracartia grani; Life cycle; Egg production; Diapause eggs; Mesozooplankton; Marteilia refringens; Mytilus galloprovincialis; Ruditapes decussatus; PCR; In situ hybridization; Thau lagoon.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00118/22931/21482.pdf
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