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Showing 1 to 9 of 9 for “"Algal diets"”.
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Morphological and Biochemical Changes of Sand Dollar Larvae in Response to Variation in Diet and Salinity
… by assigning larvae to several single and mixed algal diets, three levels of salinity and salinity-diet combinations in the laboratory. For <em>M. isometra</em>, C<em>haetoceros muelleri</em>, <em>Isochtysis galbana</em> and <em>Dunaliella tertiolectu</em> were used as single algal diets and /. …
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Ingestion Rates of Five Species of Pacific Northwest Echinoderm Larvae on Natural and Artificial Particles
… artificial diet in the laboratory. The natural algal diets included Dunaliella tertiolecta, Isochrysis galbana and Rhodomonas sp. The artificial diet used was a 10-fold diluted artificial feed made from the concentrate of Ziegler E-Z Larval diet. The numbers of cells ingested per minute and …
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Evaluation of Diet, Gametogenesis, and Hermaphroditism in Freshwater Mussels (Bivalvia: Unionidae)
To determine the effects of different algal diets on freshwater mussels, tissues of Elliptio complanata were sampled for physiological, somatic, and gametogenic condition from August 1999 to May 2000. Treatments included mussels fed Scenedesmus quadricauda (S), Neochloris oleoabundans (N), a no …
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Development of an Algal Diet for Rearing Juvenile Freshwater Mussels (Unionidae)
… old, and 3-6 years old. The mussels were fed an algal diet consisting of Scenedesmus quadricauda (22.3 - 44.5 μm), Nannochloropsis oculata (2.8 – 8.1 μm), and Selenastrum capricornutum (3.6 – 8.5 μm) in equal cell densities. The change in relative abundance of each algal species within feeding …
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Microencapsulated diets to improve the productivity of bivalve shellfish aquaculture for global food security
… edulis) juveniles relative to conventional live algal diets. I then demonstrated that the feeds could facilitate improved sexual development in O. edulis broodstock and enable this stage of bivalve production to become an order of magnitude more sustainable and economically efficient. The final …
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Development of a diet for rearing juvenile freshwater mussels
… Three trials were conducted to test various tri-algal and commercial diets and to determine the influence of silt in survival and growth of the rainbow mussel (Villosa iris) and giant floater (Pyganodon grandis). After 45 days post-metamorphosis, juvenile V. iris fed algae with silt exhibited a …
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A suitable diet and culture system for rearing juvenile freshwater mussels at White Sulphur Springs National Fish Hatchery, West Virginia
… and survival of juvenile mussels by comparing diets, algae concentration, and culture systems. The first objective determined a suitable diet for feeding juvenile northern riffleshell, Epioblasma torulosa rangiana, a species listed as federally endangered. Three algal diets were evaluated to …
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Biology, Captive Propagation, and Feasibility of Pearl Culture in the Pink Heelsplitter (Potamilus Alatus) (Say, 1817) (Bivalvia: Unionidae)
… P. alatus were assessed regarding the effects of algal diets (Nannochloropsis oculata and Neochloris oleoabundans) and substrate type (fine sediment and sand). Overall, survival of juveniles after 17 d ranged from 23.8 to 66.8 %, with mean of 48.5 %; however, survival dramatically declined during …
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Intraspecific variation in resource use, dormancy investment, and competitive ability in the facultative parthenogen Daphnia pulicaria
… spatial variation in the quality and quantity of algal resources between neighboring lakes and temporal variation (including changes due to decades of eutrophication). This prior research has shown that there is interspecific variation in the ability of species to capitalize on different resource …