Table 4.--Sex Ratios in Aneides hardii, Adults

===================================================

| Number | Number | Ratio of

Locality | of | of | males to

| males | females | females

---------------------+--------+---------+----------

Capitan Mountains | 35 | 19 | 100:54

Sierra Blanca | 22 | 7 | 100:32

Sacramentos, 1958 | 15 | 14 | 100:93

Sacramentos, '56-'57 | 22 | 16 | 100:73

---------------------+--------+---------+----------

_Age-ratio_

The data in Table 5 show adult salamanders to outnumber young at each

collecting locality. This is probably not an accurate reflection of

actual age composition in this species. Yet, we obtained the same

general result in all three years of the study. We assume, therefore,

that young were located where we could not catch many of them; probably

they were underground. Sites of hatching and of the activities of early

life would thus occur where we think the bulk of eggs are laid.

Natural History of the Salamander, Aneides hardii · 第 11 / 14 题