Record Display for the EPA National Library Catalog


Main Title Field Observations of the Ecology and Habits of Mangrove Rivulus ('Rivulus marmoratus') in Belize and Florida (Teleostei: Cyprinodontiformes: Rivulidae).
Author Davis, W. P. ; Taylor, D. S. ; Turner, B. J. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;Brevard Mosquito Control District, Titusville, FL. ;Virginia Polytechnic Inst. and State Univ., Blacksburg. Dept. of Biology.;National Science Foundation, Washington, DC.;Smithsonian Institution, Washington, DC.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/371 ;CONTRIB-693; NSF-BSR-8506417;
Stock Number PB91-163840
Additional Subjects Marine fishes ; Animal behavior ; Animal ecology ; Habitats ; Coastal waters ; Florida ; Reproduction(Biology) ; Reprints ; Rivulus marmoratus ; Belize Barrier Reef
Library Call Number Additional Info Location Last
NTIS  PB91-163840 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
The report provides a synopsis of field studies of Rivulus marmoratus from two population surveys of mangrove islands adjacent to the Belize barrier reef and observations made over fifteen years at several sites in South Florida. This small, cryptically colored killifish is the only known vertebrate selfing hermaphrodite. Florida populations consist nearly exclusively of hermaphrodites (> 99%), while the Belize populations contained a significant proportion (10-25%) of males. The combined observations demonstrate that this species is not 'rare' as previously thought, but elusive and highly adapted to microhabitats within mangrove forests. Standard ichthyological collecting techniques are ineffective in the habitat and have previously failed to reveal the strength of the association of R. marmoratus with the mangral ecosystem. (Copyright (c) 1990 by Verlog Dr. Frederick Pfeil, Munchen, FRG.)