Our findings show the feasibility of producing spat in captivity, which contributes to promoting its production and thereby developing ecological restoration plans and/or diversifying aquaculture in Ecuador. Larvae seem to have a high nutritional requirement for myristic acid, palmitoleic acid, hexadecadienoic acid, stearic acid and eicosapentaenoic acid. and Pavlova lutheri, despite being ingestedвЂ“digested, did not result in oculated larvae, which possibly indicates an inadequate lipid content for A. Diets Tetraselmis chuii, Thalassiosira sp. Best shell lengths of oculated larvae (157.62 and 172.47 Вµm), daily growth rates (4.77 and 4.52 Вµm/day), survivals (30% and 23%) and settlement rates (23% and 11%) were obtained with the diatoms Chaetoceros gracilis and Chaetoceros muelleri respectively. The spat reached a manoeuvrable size at 90 days post fertilization (3 mm). Microscopic observations indicated the presence of D veliger larvae 18 h post fertilization, and the first batch of spat was obtained after 45 days of culture. Additionally, microalgae ingestionвЂ“digestion was determined using epifluorescence microscopy, and the fatty acid profile of the microalgae was analysed. tuberculosa raised in the laboratory and the effect of six microalgae on its growth and survival.

Therefore, we describe the larval and early postвЂђlarval development of A.

The indoor production of larvae and early spat of mangrove cockles requires knowledge regarding the evolutionary characteristics of their larval morphology, associated with the appropriate use of microalgae. Natural populations of the edible mangrove cockle (Anadara tuberculosa) are threatened by overexploitation and environmental degradation due to anthropogenic activities. KEY WORDS: rock oyster, embryogenic stage, larval growth, hatchery rearing, Striostrea prismatica prismatica and provide a basis for large-scale Methods used in this study supported successful larval and postlarval culture of S. The larval and postlarval growths were exponential, reaching spat size (5 mm) after 28 days of settlement. The larval development was completed in 22 days, with Larval, and postlarval development up to 5 mm in length) is described. Larvae and nursing of postlarvae were performed using downwelling methods to produce spat. prismatica obtained from natural banks were conditioned for gonad maturation and spawning.ДЇertilization, embryogenic, and larval development were performed under laboratory conditions, then settlement of pediveliger Tropical and subtropical eastern Pacific however, natural banks are overexploited or depleted, so production by culture is The rock oyster Striostrea prismatica is one of the most abundant species in the rocky coastal ecosystems of the

Oyster spat prduction