Large males measure approximately 182 mm in length. Large females grow slightly larger and eventually reach 200 mm. Williams (1984) reported that females beyond the juvenile stage are consistently larger than males.In estuaries, juvenile white shrimp grow approximately 1.2 mm per day during late spring and summer months (Williams 1965). Growth is slow in spring, but quickens with the onset of summer. Growth rates decrease during the fall months, but shrimp that remain in estuaries to overwinter resume growing the following spring (Muncy 1984). Few white shrimp live as long as a year (Anderson 1966), however, mark-recapture studies have revealed that some white shrimp live from 27 months to as much as 4 years (Etzold and Christmas 1977; Klima et al. 1982).
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