Temperature and size range for the transport of juvenile donkey's ear abalone Haliotis asinina Linne
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Live transport of hatchery-produced juvenile donkey's ear abalone Haliotis asinina Linne was examined to evaluate the effect of transportation on the survival of juvenile abalone. Simulated transport experiments were conducted to determine the appropriate temperature using 5, 10 and 20 g L−1 of ice to air volume for 8 h and the appropriate size using two size groups (Size A, 15–20 mm, 0.5–1.3 g, and Size B, 30–35 mm, 5.3–8.5 g) up to 24-h out-of-water live transport. Survival was significantly higher (P<0.001) when 10 g L−1 of ice was used to decrease the temperature to the range of 17–23 °C. At this temperature, both size groups subjected to simulated transport for 8 and 10 h had 100% survival after 48 h, while mortality occurred in abalones subjected to 16 and 24 h of simulated transport. The Size B abalone subjected to 24 h of transport had significantly higher survival (64.4 ± 2.9%) (P<0.001) than the Size A abalone (5.5 ± 1.6%) after 48 h. Live juvenile abalone were successfully transported to the field applying the protocols developed in the lab experiment. This study serves as a guide for handling and shipping live juvenile abalone.
CitationBuen-Ursua, S. M. A., & Ludevese, G. (2011). Temperature and size range for the transport of juvenile donkey's ear abalone Haliotis asinina Linne.
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BrochureAnon. - 2000 - Aquaculture Department, Southeast Asian Fisheries Development Center (SEAFDEC/AQD)Details the research conducted at AQD for the tropical abalone Haliotis asinina. AQD has developed the rudiments of a hatchery protocol.
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Reviews in Fisheries Science, 2008 - Taylor & FrancisNatural populations of global inshore fisheries are coming under heavy pressure, primarily due to overexploitation and habitat degradation. Stock enhancement of hatchery-reared seeds is perceived as an alternative strategy to enhance the regeneration process. The Aquaculture Department of the Southeast Asian Fisheries Development Center in the Philippines has been implementing activities related to stock enhancement of donkey’s ear abalone (Haliotis asinina), mud crabs (Scylla spp.), giant clam (Tridacna gigas), seahorses (Hippocampus spp.). Seed production techniques for abalone including a diet tagging method were established and juvenile abalone were released and monitored in a marine protected area. Mud crabs conditioned before release had higher recapture rates compared to the non-conditioned crabs, which can be translated to higher survivorship. Giant clams stocked at 8-10 cm shell length have higher survival 4 mo after stocking (90%), with initial mortalities occurring within the first few days due to transportation stress. Seed production trials for seahorse have begun.