Monitoring male southern hairy-nosed wombat (Lasiorhinus latifrons) reproductive function and seasonality in a captive population

Hogan, L. A., Phillips, C. J. C., Horsup, A. B., Keeley, T., Nicolson, V., Janssen, T., Lisle, A. and Johnston, S. D. (2010) Monitoring male southern hairy-nosed wombat (Lasiorhinus latifrons) reproductive function and seasonality in a captive population. Animal Reproduction Science, 118 2-4: 377-387. doi:10.1016/j.anireprosci.2009.10.001


Author Hogan, L. A.
Phillips, C. J. C.
Horsup, A. B.
Keeley, T.
Nicolson, V.
Janssen, T.
Lisle, A.
Johnston, S. D.
Title Monitoring male southern hairy-nosed wombat (Lasiorhinus latifrons) reproductive function and seasonality in a captive population
Formatted title
Monitoring male southern hairy-nosed wombat (Lasiorhinus latifrons) reproductive function and seasonality in a captive population
Journal name Animal Reproduction Science   Check publisher's open access policy
ISSN 0378-4320
Publication date 2010-04
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.anireprosci.2009.10.001
Volume 118
Issue 2-4
Start page 377
End page 387
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier Science Bv
Collection year 2010
Language eng
Subject 060803 Animal Developmental and Reproductive Biology
0701 Agriculture, Land and Farm Management
C1
Formatted abstract
This study reports on the development and application of techniques used to assess the reproductive status of captive male southern hairy-nosed wombats (n = 4) at Rockhampton Zoo. Initially, aGnRHagonistwasused to establish a method for determining a reliable index of plasma and faecal testosterone secretion. Intra-muscular injection of buserelin (4µg) resulted in an increase (P < 0.05) in plasma and faecal testosterone concentration 90 min and 3 days after administration, respectively. Seasonal changes in faecal androgen, sperm production (spermatorrhoea) and testicular, prostatic and bulbourethral gland size were examined over a 18-month period, with prostate and bulbourethral gland cross-sectional areas being assessed by ultrasonography. Plasma testosterone secretion increased from early late winter and then decreased in spring (P < 0.001); no seasonal variation (P = 0.22) in faecal testosterone metabolite concentrations was apparent. Testicular volume showed no significant variation (P = 0.29) over the sampling period. While there was no seasonal change (P = 0.197, n = 54) in prostate size, bulbourethral gland size increased in late-autumn, peaked in mid-winter and declined in early summer (P = < 0.001, n = 55). Spermatozoa were found in the urine throughout the year. While, the captive population of SHN wombats at Rockhampton Zoo demonstrated significant changes in reproductive function, the extent of seasonality was less pronounced than that previously reported for wild populations in Southern Australia.
Keyword Seasonal reproduction
Testosterone
GnRH agonist
Testis
Prostate
Bulbourethral
Vombatus-ursinus
Marsupialia
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Agriculture and Food Sciences
 
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Created: Sun, 07 Mar 2010, 00:08:52 EST