WebJan 1, 2007 · Intensive shrimp farming began during the 1980s in Taiwan province of China. Csavas [11] analyzed the close relationship between hatchery production of post … WebP. vannamei weighing 30–45 g will spawn 100 000–250 000 eggs of approximately 0.22 mm in diameter. Hatching occurs about 16 hours after spawning and fertilization. The first stage larvae, termed nauplii, swim intermittently and are positively phototactic. Nauplii do not feed, but live on their yolk reserves.
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