Natural History of the Ornate Box Turtle, Terrapene ornata ornata AgassizLegler, John M.
Science
Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz
Legler, John M.
Ornate box turtle
[Illustration: FIG. 25. Composition of the population of
_T. o. ornata_ at the Damm Farm based on the 194 individuals
marked there in the years 1954 to 1956. Individuals smaller
than 100 mm. ordinarily could not be sexed accurately and are
shown as open bars. Open bars in the groups larger than 100 mm.
are for females, whereas solid bars are for males.]
My own experience in the field has shown that small examples of _T.
ornata_ are not so rare as previous workers have believed. Small box
turtles occupy the same microhabitat as do the adults and seem not to
be more aquatic or subterranean in habits. Juveniles are found in
burrows, in marshy areas, and in other sheltered places, but so are
adults. Most of the juveniles that I found were in open situations
where adults were abundant, sometimes within several inches of a place
where an adult was feeding or basking. Nearly every one of the smaller
turtles was discovered when I was closely scrutinizing some other
object on the ground; sometimes juveniles were actually touched before
being seen. Most juveniles were covered with cow dung or mud and
blended so well with the substrate that they were detected only when
they moved. It is likely that only a small number of the young box
turtles present in an area is ever actually observed. Young are more
vulnerable to predation and injury because of their small size, soft
shells, and immovable plastra. They evidently rely, to a large extent,
on inconspicuousness for protection.
[Illustration: FIG. 26. The seasonal abundance of females of
_T. o. ornata_ based on 540 adults captured at the Damm Farm,
the Reservation, and on roads in eastern Kansas, in the years
1954 to 1956. Records are grouped in periods of 30 days, the
periods beginning with the dates shown at the bottoms of the
bars. Juveniles are not considered. Numbers at the top of each
bar indicate the size of the sample (both sexes) and give an
approximate indication of relative seasonal abundance of
adults, except for August, when little field work was done.]
MOVEMENTS
The only previous study of movements of _T. ornata_ is that of Fitch
(1958:99-101). He recovered 14 marked _T. ornata_ at the Reservation a
total of 30 times, the period between recaptures varying from one to
seven years. He reported that the average radius of home range was 274
feet (for an area of approximately 5.4 acres), excluding a single
(presumably gravid) female that moved 1830 feet in 53 days.
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