Spotted seatrout, continued 



Chester and Thayer 1 990, Killam et al. 1 992). Losses 

 in seagrass beds and other key habitat areas have 

 been linked with declining seatrout populations. Over- 

 fishing may also be contributing to this decline (Shipp 

 1986). Periods of low rainfall and high salinity may 

 lower recruitment of young fish into the population 

 (Rutherford et al. 1989b). Catastrophic mortalities 

 have been attributed to severe cold, hurricanes, high 

 turbidity, excessive fresh water, red tide, and super- 

 saturated dissolved oxygen conditions (Gunter 1941, 

 Gunter and Hildebrand 1 951 , Springer and Woodburn 

 1960, Renfro 1963, Perret et al. 1980, Killam et al. 

 1992). In Louisiana, the use of weirs in canals may 

 impede migration of young-of-the-year fish into the 

 marsh areas of impounded water bodies or the move- 

 ment of fish trying to escape environmental extremes 

 (Herke et al. 1984). Larger adults are frequently 

 infected with pleurocerci of the tapeworm 

 Poecilancistrium robustrum (spaghetti worm) (Lorio 

 and Perret 1 978). Fish with these worms are frequently 

 discarded although they do not affect the taste of the 

 fish, nor are they infectious to humans. 



Personal communications 



DeVries, Douglas A. NOAA National Marine Fisheries 

 Service, Panama City, FL. 



References 



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