||Variations in Larval Growth and Metabolism of an Estuarine Shrimp 'Palaemonetes pugio' during Toxicosis by an Insect Growth Regulator.
McKenney, C. L. ;
Celestial, D. M. ;
||Environmental Research Lab., Gulf Breeze, FL. ;Technical Resources, Inc., Gulf Breeze, FL.
Growth regulators ;
Water pollution effects(Animals) ;
Analysis of variance ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The report presents the following conclusions: (1) Exposure of the estuarine shrimp, Palaemonetes pugio, to a juvenile hormone analogue (> or = 8 microgram methoprene/l) throughout larval development inhibited successful completion of metamorphosis; (2) Methoprene exposure retarded growth in early larval stages and postlarvae, but enhanced growth in premetamorphic larvae; (3) Respiration rates of early larvae were elevated by methoprene exposure, but not so older larvae or postlarvae; (4) Lower net growth efficiency (K2 values) in methoprene-exposed early larvae suggests that increased metabolic demands reduced assimilated energy available for growth; and (5) Modifications in O:N ratios of premetamorphic larvae and postlarvae suggest that methoprene altered substrate utilization patterns during metamorphosis.
||Pub. in Comparative Biochemistry and Physiology, v105C n2 p239-245 1993. See also PB90-264706. Prepared in cooperation with Technical Resources, Inc., Gulf Breeze, FL.
|NTIS Title Notes
||Reprint: Variations in Larval Growth and Metabolism of an Estuarine Shrimp 'Palaemonetes pugio' during Toxicosis by an Insect Growth Regulator.
||68D; 57Y; 57H; 47D
||PC A02/MF A01