BULLETIN FLORIDA MUSEUM NATURAL HISTORY 38(1)


Table 4. Summary of sex ratio data within and among years for all Gastrophryne carolinensis captured at
Breezeway Pond, Putnam County, Florida, during the months of June, July, and August The tabulation
includes all adults captured within that month.


 June July August

Year M F Ratio M F Ratio M F Ratio


1986 117 90 1.3:1 94 55 1.7:1 44 37 1.2:1
1987 110 117 0.9:1 91 35 2.6:1 88 82 1.1:1
1988 85 50 1.7:1 84 63 1.3:1 247 133 1.9:1
1989 197 129 1.5:1 41 27 1.5:1 27 40 0.7:1
1990 45 57 0.8:1 21 29 0.7:1 4 12 0.3:1






Table 5. Analysis of variance of differences in snout-urostyle length (SUL) and weight among years
between the sexes of unmarked adult Gastrophryne carolinensis, 1986-1990. No weight data were
available for 1987. Values are for Type II sums of squares.



 Variable Year Sex Year*Sex



 SUL F= 115.24 F= 186.53 F= 16.56
 p=0.0001 p=0.0001 p=0.0001
 4 df 1df 4 df
 Weight F=46.85 F=329.52 F=1.43
 p=0.0001 p=0.0001 p=0.2316
 3 df Idf 3 df




 population structure was bimodal with the appearance of recently metamorphosed
 young from the 1985 breeding season (exiting Breezeway Pond in 1986) and from
 immigrants from some other location in 1988 (entering Breezeway Pond in
 September, October, and November). Despite the lack of reproduction at
 Breezeway Pond from 1986 through 1990, the population structure did not shift
 appreciably toward large adults as the study progressed. In 1990, a small number
 of eastern narrow-mouthed toads came to the pond, but the adult size structure did
 not differ from previous years.