Induction of ovarian activity and ovulation in an induced ovulator, the maned wolf (Chrysocyon brachyurus), using GnRH agonist and recombinant LH

Ovulation, fertilization and preimplantation embryonic development in raccoon dogs ( Nyctereutes procyonoides )

“…The known induced ovulating canid is the maned wolf (Johnson et al, 2014). In addition, ovulation can be physically induced in most felids (Brown, 2011;Stewart et al, 2012) or chemically induced in maned wolf (Johnson et al, 2014). In the present study, we could not exclude the possibility of the male effect such as scent signaling from urine or feces, played a role in ovulation as female and male were housed in pairs.…”

“…Although not all but most canids including domestic dog (Concannon, 2011), blue fox (Moller, 1973) and red fox (Mondain-Monval et al, 1977), have been defined as spontaneous ovulators. The known induced ovulating canid is the maned wolf (Johnson et al, 2014). In addition, ovulation can be physically induced in most felids (Brown, 2011;Stewart et al, 2012) or chemically induced in maned wolf (Johnson et al, 2014).…”

Assisted Reproductive Techniques on South American Wild Mammals

“…An implant of deslorelin (2.1 mg), a GnRH analogue, was 100% effective for induction of ovary activity, with ovulation occurring between days 9 and 16 (mean: 12.5 ± 1.4 days) after implant when paired with a male, a physiological condition required for the effective ovulation. Alternatively, a single injection of equine recombinant LH (reLH), associated with the deslorelin removal effectively induced ovulation in unpaired females, without apparent adverse impact on fertility in subsequent breeding seasons [59]. Regarding the coati, a carnivore from the Procyonidae family, the unique attempt of estrous control was made by using melengestrol acetate, a progestin, but treatments induced purulent vaginal discharge and uterine adenocarcinoma, and consequently the authors recommend caution when using this drug [60].…”

Endocrine and paracrine controls of canine follicular development and function

“…However, studies have demonstrated some deviations in this pattern for certain wild canids. For example, female maned wolves (Johnson, Freeman, Colgin, McDonough, & Songsasen, ) and island foxes ( Urocyon littoralis ) (Asa, Bauman, Coonan, & Gray, ) only ovulate in the presence of a male, implicating the existence of some forms of induced oestrus or ovulation. The Asian wild dog or dhole ( Cuon alpinus ) exhibits seasonal polyoestrus with periods of sexual receptivity occurring every 4–6 weeks (Durbin, Venkataraman, Hedges, & Duckworth, ).…”