NATALITY OF CHELYDRA-SERPENTINA (TESTUDIN ES, CHELYDRIDAE) IN COSTA-RICA

Authors
FLAUSIN LF ACUNAMESEN R ARAYA E
Citation
Lf. Flausin et al., NATALITY OF CHELYDRA-SERPENTINA (TESTUDIN ES, CHELYDRIDAE) IN COSTA-RICA, Revista de biologia tropical, 45(1B), 1997, pp. 663-666
Citations number
13
Categorie Soggetti
Biology
Journal title
Revista de biologia tropical → ACNP
ISSN journal
00347744
Volume
45
Issue
1B
Year of publication
1997
Pages
663 - 666
Database
ISI
SICI code
0034-7744(1997)45:1B<663:NOC(EC>2.0.ZU;2-7
Abstract
Three Chelydra serpentina nests were monitored from September through October 1993. Maximum natality was 92% (mean 33.73%) and seemed to be associated with high temperature, abundant potassium and a moderate co ncentration of calcium in the soil. Nests were located at less than 80 m from water and soil characteristics were: 21.8-22.9 degrees C, clay -loam texture, penetrability index 0.27-0.87 kg/cm(2), humidity 48-74 %.