Larval developmental stages of laboratory-reared silver pomfret,pampus argenteus |
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Authors: | Sulaiman Almatar Khalid Al-Abdul Elah Tawfiq Abu-Rezq |
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Institution: | (1) Mariculture and Fisheries Department, Kuwait Institute for Scientific Research, P.O. Box 1638, 22017 Salmiya, Kuwait |
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Abstract: | Eggs of the silver pomfret,Pampus argenteus, were collected and artificially fertilized by stripping fully-ripe male and female broodstock caught by gillnets in Kuwait
waters during June 1997. Larvae hatched from fertilized eggs were reared until 90 days after hatching (DAH) in water temperatures
of 27–30°C. Newly-hatched larvae grew from an average of 2.4 mm in body length (BL) to 3.7, 4.4, 7.2 and 8.4 mm at 8, 12,
24 and 30 DAH, respectively. Myomere and vertebral numbers ranged from 34 to 36. Transformation from the larval to juvenile
form was completed at 22.2 mm BL (40 DAH). Dorsal and anal fin spines first appeared when juveniles reached 38.8 mm BL (50
DAH). Body depth increased with increase in body length; a rapid increase in body depth occurred in larvae 7.1–8.0 mm, reaching
57% of BL, and further increased to 69% of BL in juveniles 38.8 to 47.9 mm. Pigmentation during development is described and
illustrated. |
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Keywords: | Pampus argenteus larvae early developmental stages |
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