DSpace Repository

Effects of Lupron and surgical castration on fecal androgen metabolite concentrations and intermale aggression in capybaras (Hydrochoerus hydrochaeris)

Show simple item record

dc.contributor.author Yu, Jennifer H. en
dc.contributor.author Brown, Janine en
dc.contributor.author Boisseau, Nicole en
dc.contributor.author Barthel, Tony en
dc.contributor.author Murray, Suzan en
dc.date.accessioned 2021-12-18T02:31:50Z
dc.date.available 2021-12-18T02:31:50Z
dc.date.issued 2021
dc.identifier.citation Yu, Jennifer H., Brown, Janine, Boisseau, Nicole, Barthel, Tony, and Murray, Suzan. 2021. "<a href="https://repository.si.edu/handle/10088/111965">Effects of Lupron and surgical castration on fecal androgen metabolite concentrations and intermale aggression in capybaras (Hydrochoerus hydrochaeris)</a>." <em>Zoo biology</em>, 135–141. 40, (2), Hoboken, New Jersey: Wiley. <a href="https://doi.org/10.1002/zoo.21586">https://doi.org/10.1002/zoo.21586</a>. en
dc.identifier.issn 0733-3188
dc.identifier.uri https://hdl.handle.net/10088/111965
dc.description.abstract To curb agonistic interactions in a bachelor group of three male capybaras (Hydrochoerus hydrochaeris), a single dose of leuprolide acetate (Lupron (R)) was used in an attempt to chemically sterilize the males. Concurrently, fecal androgen metabolite (FAM) concentrations were quantified via enzyme immunoassay to monitor changes in testosterone production after injection of the gonadotropin-releasing hormone agonist. When Lupron proved ineffective in suppressing intraspecific aggression, surgical castration was performed on two males, with continued noninvasive endocrine monitoring. In all three capybaras, FAM concentrations increased initially as a result of the luteinizing hormone surge, but then decreased significantly following chemical sterilization. Surgical castration resulted in further, persistent declines in FAM concentrations in two males, while the third, intact male demonstrated a rise in FAM to pre-Lupron concentrations at 8.5 and 9.5-month postadministration. Despite successful suppression of sperm and testosterone production, intermale aggression continued, ultimately necessitating separation of the animals and transfer to other holding institutions. Under this set of conditions, a single Lupron dose was inadequate for suppressing intraspecific aggression in a group of three males with a pre-established history of aggression. en
dc.relation.ispartof Zoo biology en
dc.title Effects of Lupron and surgical castration on fecal androgen metabolite concentrations and intermale aggression in capybaras (Hydrochoerus hydrochaeris) en
dc.type Journal Article en
dc.identifier.srbnumber 157930
dc.identifier.doi 10.1002/zoo.21586
rft.jtitle Zoo biology
rft.volume 40
rft.issue 2
rft.spage 135
rft.epage 141
dc.description.SIUnit NZP en
dc.citation.spage 135
dc.citation.epage 141


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


Browse

My Account

Statistics