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For the below, it appears that the
http://en.wikipedia.org/wiki/Deer_mouse
that is also known as the
http://en.wikipedia.org/wiki/White-footed_mouse
responds to the length of the period of light in the day and
the amount of
food or calories that they consume in their sexual
reproduction behavior and
biology. For the papers below, (1) will shortly be avail,
(2) is free
full-text, (3) is free full-text and (4) is not free. By
searching
Medline for "Nelson-RJ", you may find many additional,
free-full-text papers on these subjects.

1. Reilly SJ, Oum R, Heideman PD.
Phenotypic plasticity of reproductive traits in response to
food
availability and photoperiod in white-footed mice
(Peromyscus leucopus).
Oecologia. 2006 Sep 6; [Epub ahead of print]
PMID: 16955287 http://tinyurl.com/l9xl8

2. Nelson RJ, Kita M, Blom JM, Rhyne-Grey J.
Photoperiod influences the critical caloric intake necessary
to maintain
reproduction among male deer mice (Peromyscus maniculatus).
Biol Reprod. 1992 Feb;46(2):226-32.
PMID: 1536898 http://tinyurl.com/guh7l

3. Young KA, Zirkin BR, Nelson RJ.
Testicular regression in response to food restriction and
short photoperiod
in white-footed mice (Peromyscus leucopus) is mediated by
apoptosis.
Biol Reprod. 2000 Feb;62(2):347-54.
PMID: 10642572 http://tinyurl.com/k9a5f

4. Nelson RJ.
Gonadal regression induced by caloric restriction is not
mediated by the
pineal gland in deer mice (Peromyscus maniculatus).
J Pineal Res. 1987;4(3):339-45.
PMID: 3625465 http://tinyurl.com/haohn