Record Display for the EPA National Library Catalog


Main Title Notes on the Embryonic Period of the Pinfish Lagodon Rhomboides (Linnaeus).
Author Schimmel., Steven C. ;
CORP Author Environmental Research Lab., Gulf Breeze, Fla.
Year Published 1977
Report Number EPA/600/J-77/019 ;Contrib-281;
Stock Number PB-268 568
Additional Subjects Fishes ; Gonadotropins ; Embryology ; Dose rate ; Embryos ; Larvae ; Hormones ; Reproduction(Biology) ; Fertility ; Experimental data ; Reprints ; Lagodon rhomboides ; Pinfish
Library Call Number Additional Info Location Last
NTIS  PB-268 568 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Adult pinfish, Lagodon rhomboides, were collected during September and October, 1974 and 1975. Following a minimum of one week holding period, females were initially injected with 200 IU human chorionic gonadotropin and injected with 400 IU every second day thereafter until mature ova (0.90-0.93 mm diameter) were produced. Ova were artificially fertilized and the embryonic period (sensu Balon, 1975) described and illustrated. Emergence occurred 48 hr after fertilization at 18C and eye pigmentation appeared 144 hr after fertilization. Larval total length at emergence was 2.3 mm; at 96 hr post-emergence, 2.7 mm; and at 120 hr post-emergence, 2.5 mm. Decrease in length and death of larvae after 96 hr post-emergence was probably due to malnutrition and subsequent infection.