Abstract
The rates of closure of wounds made by streamer tags in penaeid prawns were measured, and the effect of streamer tag placement and prawn size on survival rate was assessed. Penaeus esculentus (27–39 mm carapace length (CL)) were tagged horizontally through the middle of the second abdominal segment. After tagging, the cuticle of the prawns grew inwards, during the intermoult period, forming a tube that joined between 48 (two moults) and 90 days (four moults) after tagging. Two hundred and thirty P. esculentus, recaptured after being tagged in three different positions with streamer tags and released at sea, were also examined. Tube formation was fastest in prawns tagged through the middle of the first segment ( P<0.01). Laboratory tagging experiments showed that only size significantly affected the survival rate of P. esculentus and Penaeus merguiensis. Tag placement was not important for survival, but wound closure was fastest in prawns tagged through the middle of the second segment.
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