Abstract
The State of Florida's practice of releasing unmarked early juvenile red drum Sciaenops ocellatus L. to create a recreational fishery in Biscayne Bay, FL, USA, was assessed. Cohorts were reared in ponds to an early juvenile size of ≃ 50 mm total length. Fish were then harvested and transported immediately to release locations within 24 h. Substantial mortality often resulted after harvesting and immediate transport of early juveniles. Weak correlations between post-transport mortality, transport conditions and fish characteristics (i.e. age, size and condition) suggested that stressors operating before or during pond harvest were predetermining toleration of transport. Seine sampling 1-6 days after cohorts were released indicated that fish 'disappeared' from release sites faster than the rates of mortality observed for their siblings monitored in food-rich, predator-free tanks. Visual and immunological analyses of gut contents suggested that juvenile great barracuda Sphyraena barracuda (Walbaum) and adult redfin needlefish Strongylura notata (Poey) were the major predators. Strategies for reducing pre- and post-release mortality and directions for future research are suggested. Discontinuing the release of unmarked organisms of any type is strongly recommended.
| Original language | English |
|---|---|
| Pages (from-to) | 737-750 |
| Number of pages | 14 |
| Journal | Aquaculture Research |
| Volume | 30 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1 1999 |
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ASJC Scopus subject areas
- Aquatic Science
Cite this
Red drum, Sciaenops ocellatus L., stock enhancement in Biscayne Bay, FL, USA : Assessment of releasing unmarked early juveniles. / Serafy, J. E.; Ault, Jerald S; Capo, T. R.; Schultz, D. R.
In: Aquaculture Research, Vol. 30, No. 10, 01.10.1999, p. 737-750.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Red drum, Sciaenops ocellatus L., stock enhancement in Biscayne Bay, FL, USA
T2 - Assessment of releasing unmarked early juveniles
AU - Serafy, J. E.
AU - Ault, Jerald S
AU - Capo, T. R.
AU - Schultz, D. R.
PY - 1999/10/1
Y1 - 1999/10/1
N2 - The State of Florida's practice of releasing unmarked early juvenile red drum Sciaenops ocellatus L. to create a recreational fishery in Biscayne Bay, FL, USA, was assessed. Cohorts were reared in ponds to an early juvenile size of ≃ 50 mm total length. Fish were then harvested and transported immediately to release locations within 24 h. Substantial mortality often resulted after harvesting and immediate transport of early juveniles. Weak correlations between post-transport mortality, transport conditions and fish characteristics (i.e. age, size and condition) suggested that stressors operating before or during pond harvest were predetermining toleration of transport. Seine sampling 1-6 days after cohorts were released indicated that fish 'disappeared' from release sites faster than the rates of mortality observed for their siblings monitored in food-rich, predator-free tanks. Visual and immunological analyses of gut contents suggested that juvenile great barracuda Sphyraena barracuda (Walbaum) and adult redfin needlefish Strongylura notata (Poey) were the major predators. Strategies for reducing pre- and post-release mortality and directions for future research are suggested. Discontinuing the release of unmarked organisms of any type is strongly recommended.
AB - The State of Florida's practice of releasing unmarked early juvenile red drum Sciaenops ocellatus L. to create a recreational fishery in Biscayne Bay, FL, USA, was assessed. Cohorts were reared in ponds to an early juvenile size of ≃ 50 mm total length. Fish were then harvested and transported immediately to release locations within 24 h. Substantial mortality often resulted after harvesting and immediate transport of early juveniles. Weak correlations between post-transport mortality, transport conditions and fish characteristics (i.e. age, size and condition) suggested that stressors operating before or during pond harvest were predetermining toleration of transport. Seine sampling 1-6 days after cohorts were released indicated that fish 'disappeared' from release sites faster than the rates of mortality observed for their siblings monitored in food-rich, predator-free tanks. Visual and immunological analyses of gut contents suggested that juvenile great barracuda Sphyraena barracuda (Walbaum) and adult redfin needlefish Strongylura notata (Poey) were the major predators. Strategies for reducing pre- and post-release mortality and directions for future research are suggested. Discontinuing the release of unmarked organisms of any type is strongly recommended.
UR - http://www.scopus.com/inward/record.url?scp=0032787142&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032787142&partnerID=8YFLogxK
U2 - 10.1046/j.1365-2109.1999.00390.x
DO - 10.1046/j.1365-2109.1999.00390.x
M3 - Article
AN - SCOPUS:0032787142
VL - 30
SP - 737
EP - 750
JO - Aquaculture Research
JF - Aquaculture Research
SN - 1355-557X
IS - 10
ER -