Natural History of the Racer Coluber constrictorFitch, Henry S. (Henry Sheldon)
Science
Natural History of the Racer Coluber constrictor
Fitch, Henry S. (Henry Sheldon)
Racer snake
====+=================================+==================================
| Original record | Record(s) of recapture
Sex +---------------+-----+----+------+--------------+-----+-----+-------
| Date | A | B | C | Date | A | B | C
----+---------------+-----+----+------+--------------+-----+-----+-------
[M] | Nov. 12, 1952 | 342 |....| 2-1/2| May 20, 1955 | 702 | 110 | 33
[M] | Nov. 1, 1953 | 330 | 11 | 2 | Aug. 16, 1956| 780 | 162 | 35-1/2
[M] | Nov. 12, 1953 | 293 |....| 2-1/2| May 14, 1956 | 634 | 96 | 32-1/2
| | | | | Oct. 13, 1956| 689 | 110 | 37-1/2
[M] | April 15, 1955| 320 | 13 | 9-1/2| June 8, 1958 | 740 | 118 | 45
[M] | Oct. 2, 1955 | 348 | 18 | 1 | May 22, 1958 | 728 | 120 | 33
| | | | | May 21, 1960 | 795 | 130 | 57
[M] | June 25, 1959 | 378 | 10 | 10 | June 30, 1960| 590 | 60 | 22
| | | | | June 7, 1961 | 705 | 123 | 33
[M] | Nov. 1, 1953 | 330 | 11 | 2 | Aug. 25, 1957| 805 | 183 | 48
----+---------------+-----+----+------+--------------+-----+-----+-------
Unlike young of the year, racers in their second autumn were trapped
in large numbers. By this time all were large enough to be caught in
the traps of quarter-inch wire mesh, and they were the most abundant
size group. Many that were marked at this stage were recaptured after
intervals of months or years, showing the trend of growth. Some of
these snakes in their second autumn already had overtaken the more
retarded third-year individuals. The two age classes cannot be
separated with certainty. Selected records of individuals that were
almost certainly second-year young at the time they were marked are
presented in Table 14.
Table 14. Growth of Young Racers That Were Marked Near the Time of
Their Second Hibernation
Column headings:
A: Snout-vent length in mm.
B: Weight in grams
C: Probable age in months
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account