Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis)

Kerry V. Fanson, Nadja C. Wielebnowski, Tanya M. Shenk, Jennifer H. Vashon, John R. Squires, Jeffrey R. Lucas

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Canada lynx face some unique breeding restrictions, which may have implications for population viability and captive management. The goal of this study was to improve our understanding of basic reproductive physiology in Canada lynx. Using fecal hormone metabolite analysis, we established normative patterns of fecal estrogen (fE) and progestagen (fP) expression in captive and wild female Canada lynx. Our results indicate that Canada lynx have persistent corpora lutea, which underlie their uncharacteristic fP profiles compared to other felids. Thus, fP are not useful for diagnosing pregnancy in Canada lynx. We also found that Canada lynx are capable of ovulating spontaneously. Captive females had higher concentrations of fE and fP than wild females. Both populations exhibit a seasonal increase in ovarian activity (as measured by fE) between February and April. Finally, there was evidence of ovarian suppression when females were housed together.

LanguageEnglish
Pages217-224
Number of pages8
JournalGeneral and Comparative Endocrinology
Volume169
Issue number3
DOIs
Publication statusPublished - 2010

Fingerprint

Lynx
Corpus Luteum
corpus luteum
Canada
progestational hormones
Progestins
estrogens
Estrogens
Felidae
animal reproduction
Population
Breeding
Lynx lynx
Lynx canadensis
hormones
viability
pregnancy
Hormones
metabolites
Pregnancy

Keywords

  • Estrogen
  • Fecal metabolites
  • Lynx
  • Non-invasive
  • Progesterone
  • Seasonality

Cite this

Fanson, K. V., Wielebnowski, N. C., Shenk, T. M., Vashon, J. H., Squires, J. R., & Lucas, J. R. (2010). Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis). General and Comparative Endocrinology, 169(3), 217-224. https://doi.org/10.1016/j.ygcen.2010.09.003
Fanson, Kerry V. ; Wielebnowski, Nadja C. ; Shenk, Tanya M. ; Vashon, Jennifer H. ; Squires, John R. ; Lucas, Jeffrey R. / Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis). In: General and Comparative Endocrinology. 2010 ; Vol. 169, No. 3. pp. 217-224.
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Fanson, KV, Wielebnowski, NC, Shenk, TM, Vashon, JH, Squires, JR & Lucas, JR 2010, 'Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis)', General and Comparative Endocrinology, vol. 169, no. 3, pp. 217-224. https://doi.org/10.1016/j.ygcen.2010.09.003

Patterns of ovarian and luteal activity in captive and wild Canada lynx (Lynx canadensis). / Fanson, Kerry V.; Wielebnowski, Nadja C.; Shenk, Tanya M.; Vashon, Jennifer H.; Squires, John R.; Lucas, Jeffrey R.

In: General and Comparative Endocrinology, Vol. 169, No. 3, 2010, p. 217-224.

Research output: Contribution to journalArticleResearchpeer-review

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