Birth of pouch young after artificial insemination in the tammar wallaby (Macropus eugenii)

Biology of Reproduction
Damien B B P ParisMarilyn B Renfree

Abstract

Timing of artificial insemination (AI) in marsupials is critical because fertilization must occur before mucin coats the oocyte during passage through the oviduct. In this study, timing and the site of insemination were examined to develop AI in the tammar wallaby (Macropus eugenii). Birth and postpartum (p.p.) estrus was synchronized in 46 females. Epididymal spermatozoa (n=4) or semen collected by electroejaculation (n=42) were inseminated early (4-21 h p.p.) into the urogenital sinus (n=7), the anterior vaginal culs de sac (n=7), the uterus by transcervical catheter (n=5), or the uterus by injection (intrauterine artificial insemination, IUAI) (n=5). A further 16 females were inseminated late (19-48 h p.p.) by IUAI. All females were monitored for birth. A third group of six females was inseminated late (21-54 h p.p.) by IUAI and 0.4-6.6 h later, sperm had reached the oviduct in all animals. In total, an oocyte to which spermatozoa were attached was recovered and two young were born after IUAI using epididymal (n=1) or electroejaculated (n=2) spermatozoa, but no young resulted from insemination at other sites. Two females were successfully inseminated at 43 and 47 h p.p., later than most other animals, and the third was insem...Continue Reading

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Citations

Aug 24, 2007·Reproduction, Fertility, and Development·Monique C J ParisRebecca L Krisher
Dec 14, 2007·Reproduction, Fertility, and Development·Brandon R MenziesMarilyn B Renfree
Apr 1, 2010·Reproduction, Fertility, and Development·Camryn D AllenStephen D Johnston
Sep 1, 2012·Reproduction, Fertility, and Development·T KeeleyJ K O'Brien
Aug 27, 2005·Reproduction : the Official Journal of the Society for the Study of Fertility·D B B P ParisM B Renfree
Mar 14, 2013·Reproduction : the Official Journal of the Society for the Study of Fertility·Lindsay A HoganStephen D Johnston
Jun 30, 2005·Reproduction : the Official Journal of the Society for the Study of Fertility·Emily F HynesMarilyn B Renfree
Oct 28, 2008·Theriogenology·John C RodgerStephen D Johnston
Jul 16, 2008·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Kirsten Szdzuy, Ulrich Zeller
Aug 22, 2006·Animal Reproduction Science·S M H Andrabi, W M C Maxwell
Feb 9, 2018·Zoological Science·Sebastian J CharltonJulie Strand
Jul 1, 2015·Reproduction, Fertility, and Development·Ryan Robert WittJohn Cameron Rodger
Feb 26, 2020·Theriogenology·John C Rodger

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Methods Mentioned

BETA
dissection
PCR

Software Mentioned

SYSTAT
Cervus

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