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- W2305611647 abstract "Culture techniques used to rear larval anchovy through metamorphosis using laboratory cultured foods are described. Anchovy larvae fed dinoflagellates Gymnodiniumsplendens, rotifersBrachionus plicatilis, harpacticoid copepods Tisbe furcata, and brine shrimp nauplii Artemia salina, completed metamorphosis (35 mm) in 74 days at 16°C with a minimum survival of 12.5%. Growth in length and weightwere recorded over this interval and an excellent fit to the Laird-Gompertzgrowthequationwas obtained. Growth was comparable to that on a wild plankton diet. In a starvation experiment, most of the fish that completed metamorphosis wi thstood a starvation period of 12·15 days, whereas those that had not completed metamorphosis did not. Knowledge of the growth rate of northern an chovy, Engraulis mordax Girard, is essential for estimating year class success or larval survival. Another important element in estimating sur vival is the time fish or larvae can withstand starvation. In this report I describe the growth rate of larval anchovy to metamorphosis and present data on the ability of newly metamor phosed juveniles to withstand starvation. Special attention is also given to culture techniques be cause this is the first time northern anchovy have been reared through metamorphosis entirely on cultured foods. Kramer and Zweifel (1970) recorded the growth of anchovy larvae at 17° and 22°C for periods of up to 34 days. In their experiments larvae at tained an average length of 17 mm but did not reach metamorphosis, which is complete at about 35 mm standard length. Their larvae were fed wild plankton supplemented by Artemia salina nauplii. In the ensuing years, rearing techniques using cultured foods have gradually been de veloped: Gymnodiniumsplendens for 3- to 5-day old larvae (Lasker et a!. 1970), and Brachionus plicatiZis for 5- to 20-day-old larvae (Theilacker and McMaster 1971). This paper describes the use of the harpacticoid copepod Tisbe furcata which are the proper size food for larvae older than 20 days (10 mm). All previous attempts to rear anchovy larvae beyond 35 days on cultured foods have failed. In all attempts Artemia nauplii were used after 20 days." @default.
- W2305611647 created "2016-06-24" @default.
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- W2305611647 date "1976-01-14" @default.
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- W2305611647 title "CULTURE AND GROWTH OF NORTHERN ANCHOVY, ENGRAULIS MORDAX, LARVAE" @default.
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