We also tested several other factors that are thought to influence the use of habitat by penaeids.
The choice of habitat did not change between day and night, despite the fact that during the day most prawns were buried (or at least quiescent), while at night they tended to be active in the water column.
Most previous studies that have examined the influence of time of day on habitat use by penaeids have found considerable differences between day and night.
These studies have, however, concentrated on species that select vegetative structure as a resting spot during the day, but may move to unvegetated areas at night (Minello and Zimmerman, 1985; Liu and Loneragan, 1997; Sanchez, 1997).
We also tested several other factors that are thought to influence the use of habitat by penaeids. The choice of habitat did not change between day and night, despite the fact that during the day most prawns were buried (or at least quiescent), while at night they tended to be active in the water column. Most previous studies that have examined the influence of time of day on habitat use by penaeids have found considerable differences between day and night. These studies have, however, concentrated on species that select vegetative structure as a resting spot during the day, but may move to unvegetated areas at night (Minello and Zimmerman, 1985; Liu and Loneragan, 1997; Sanchez, 1997).
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