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Reproductive cycle of the echinoid Paracentrotus lividus: analysis by means of the maturity index
Summary The gonad and maturity index cycles of the echinoid Paracentrotus lividus and their relations with environmental abiotic parameters are assessed after 2 years of observation in southernExpand
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Diseases of Echinodermata
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Madagascar Holothurie SA: The first trade company based on sea cucumber aquaculture in Madagascar
spread activity (Laroche and Ramananarivo 1995; Conand et al. 1997; Rasolofonirina and Conand 1998; McVean et al. 2005) and natural populations are currently overexploited (Conand 1998; Conand et al.Expand
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Parasites and biotic diseases in field and cultivated sea cucumbers
Amongst echinoderms, the Holothuroidea represents the class that is the most infested by parasites. Parasites of holothuroids are Bacteria, Protozoa and Metazoa. There are about 150 species ofExpand
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Life cycle and mode of infestation of Myzostoma cirriferum (Annelida): a symbiotic myzostomid of the comatulid crinoid Antedon bifida (Echinodermata)
Eight different stages succeed one another in the life cycle of the myzostomid Myzostoma cirriferum, viz, the embryonic stage, 4 larval stages, and 3 postmetamorphic stages. Fertilization isExpand
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Feeding rate and sediment reworking by the holothuroid Holothuria tubulosa (Echinodermata) in a Mediterranean seagrass bed off Ischia Island, Italy
Values of Holothuria tubulosa feeding rate range over an order of magnitude (0.049-0.489 g dw sediment h-1) depending on individuals' size and environmental conditions. Feeding rate is correlatedExpand
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The annual pyloric cycle of Asterias rubens L. (echinodermata: Asteroidea)
Observations of biochemical changes in the pyloric caeca of Asterias rubens L. in different nutritional states and at different stages of the reproductive cycle show the existence of an annual cycleExpand
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