In vivo and in vitro maturation of oocytes collected from superstimulated wood bison ( Bison bison athabascae ) during the anovulatory and ovulatory seasons

Cervantes, Miguel; Palomino, J. M.; Anzar, M.; Mapletoft, R.J.; Adams, Gregg P.

doi:10.1016/j.anireprosci.2016.09.001

Cited by 13 publications

(8 citation statements)

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“…In NP animals, P4 concentrations were above the LLOQ [15] and showed high variability, despite our LC-MS assay good reproducibility [15] , thus discarding the use of P4 for pregnancy diagnosis, like in other species [ 8 , 26 , 27 ]. Sampling occurred in January, February or early March, when most of the American Bison NP cows should be in anestrus [4] . This variation in P4 levels could also be related to stress induced adrenal progesterone production [28] , as discussed for bulls.…”

Section: Discussionmentioning

confidence: 99%

“…Bison estrus cycle has been estimated to be around 21 d [ 2 , 3 ]. They exhibit 5-6 cycles [2] during the ovulatory season in autumn [4] , whereas an anestrus is observed during the other periods of the year [4] . In a natural environment, American Bison calving season is spring (May to July) after around 275 d of gestation [ 5 , 6 ], although weather or grazing areas and nutrition could modulate this duration [6] .…”

Section: Introductionmentioning

confidence: 99%

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American Bison (Bison bison) reproductive endocrinology: serum Pregnancy Associated Glycoproteins (PAG), Progesterone, Estrone and Estrone-Sulfate in non pregnant animals and during gestation

Frisee

Rigaux

Dufour

et al. 2022

Domestic Animal Endocrinology

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

American Bison (Bison bison) reproductive endocrinology: serum Pregnancy Associated Glycoproteins (PAG), Progesterone, Estrone and Estrone-Sulfate in non pregnant animals and during gestation

Frisee

Rigaux

Dufour

et al. 2022

Domestic Animal Endocrinology

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“…If this is the case, it does not appear to have any effect on oocyte quality in this species. Recently, nuclear maturation of wood bison oocytes was compared between seasons without any differences being observed (Cervantes et al, ) and wood bison embryos were produced in vitro during both the anovulatory and ovulatory seasons (Cervantes et al, ). We conclude that the follicular environment in hormonally stimulated wood bison is sufficient to maintain the quality of the oocyte independent of season and that we can produce transferable embryos in wood bison throughout the year.…”

Section: Discussionmentioning

confidence: 99%

“…Embryo production via techniques involving in vivo and in vitro fertilization is necessary to deploy a genome biobank and has been used to a limited extent in the preservation of some endangered wildlife species (Comizzoli, Mermillod, & Mauget, ; Loskutoff, Bartel, Meintjes, Godke, & Schiewe, ). Beginning with the bovine model (Adams & Singh, ), we have conducted a series of studies in an effort to develop these reproductive technologies for use in bison (Cervantes, Palomino, Anzar, Mapletoft, & Adams, ; Cervantes et al, , ; Palomino, Cervantes, & Adams, ; Palomino, McCorkell, Woodbury, & Adams, ; Palomino et al, , ; Toosi et al, ). An added complexity with North American bison is seasonality.…”

Section: Introductionmentioning

confidence: 99%

Effect of season and superstimulatory treatment on in vivo and in vitro embryo production in wood bison (Bison bison athabascae)

Palomino

Mastromonaco

Cervantes

et al. 2019

Reprod Domestic Animals

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Two experiments were done using a two-by-two design to determine the effects of season and superstimulatory protocol on embryo production in wood bison. In Experiment 1 (in vivo-derived embryos), ovarian superstimulation was induced in female bison during the ovulatory and anovulatory seasons with either two or three doses of FSH given every-other-day (FSH × 2 vs. FSH × 3, respectively). Bison were given hCG to induce ovulation, inseminated 12 and 24 hr after hCG, and embryos were collected 8 days after hCG (n = 10 bison/group). In Experiment 2 (in vitro embryo production), ovarian superstimulation was induced in female bison during the ovulatory and anovulatory seasons with two doses of FSH, and in vivo maturation of the cumulus-oocyte complexes (COC) was induced with hCG at either 48 or 72 hr after the last dose of FSH. COC were collected 34 hr after hCG, and expanded COC were used for in vitro fertilization and culture. In Experiment 1, the number of follicles ≥9 mm, the proportion of follicles that ovulated, the number of CL, and the total number of ova/embryos collected did not differ between seasons or treatment groups, but the number of transferable embryos was greater (p < .05) in the ovulatory season. In Experiment 2, no differences were detected between seasons or treatment groups for any end point. The number of transferable embryos produced per bison was greatest (p < .05) using in vitro fertilization and was unaffected by season (1.5 ± 0.2 and 1.1 ± 0.3 during anovulatory and ovulatory seasons, respectively), in contrast to in vivo embryo production which was affected by season (0.1 ± 0.01 and 0.7 ± 0.2 during anovulatory and ovulatory seasons, respectively). Results demonstrate that transferable embryos can be produced throughout the year in wood bison by both in vivo and in vitro techniques, but the efficiency of embryo production of in vivo-derived embryos is significantly lower during the anovulatory season. K E Y W O R D S FSH, in vitro embryo, in vivo embryo, season, wood bison | 55 PALOMINO et AL. How to cite this article: Palomino JM, Mastromonaco GF, Cervantes MP, Mapletoft RJ, Anzar M, Adams GP. Effect of season and superstimulatory treatment on in vivo and in vitro embryo production in wood bison (Bison bison athabascae).

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“…The low efficiency of IVF in wild ungulates is due to technical limitations, such as insufficient knowledge about the basic reproduction and physiology of gametes and embryos, difficulty in handling animals safely and without stress, unavailability of biological material, and lack of studies establishing ideal conditions for the in vitro manipulation of gametes and embryos for different species (Andrabi and Maxwell, 2007;Cervantes et al, 2016;Mastromonaco and Songsasen, 2020;Thongphakdee et al, 2017). Although these factors are associated, this review focuses primarily on the aspects related to in vitro manipulation.…”

mentioning

confidence: 99%

Embryo production by in vitro fertilization in wild ungulates: progress and perspectives – A Review

Santos

Silva

Pereira

2022

Annals of Animal Science

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Wild ungulates are of fundamental importance for balancing ecosystems, as well as being the species of economic interest. Increasing concern over the accelerated population reduction of these species has resulted in the development of assisted reproduction techniques, such as in vitro fertilization (IVF), as a tool for conservation and multiplication. In the present scenario, IVF protocols were developed based on the methodologies used for domestic ungulates. Nevertheless, owing to the physiological and reproductive differences among the species, several factors associated with IVF and its relationship with the characteristics of the species of interest require clarification. In vitro conditions for the collection and selection of female and male gametes, oocyte maturation, sperm capacitation, co-incubation of gametes, and embryonic development can influence IVF results. Therefore, the present review considers the main advances in the methodologies already used for wild ungulates, emphasizing the strategies for improving the protocols to obtain better efficiency rates. Additionally, we discuss the conditions of each IVF stage, with emphasis on aspects related to in vitro manipulation and comparability with the protocols for domestic ungulates.

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In vivo and in vitro maturation of oocytes collected from superstimulated wood bison ( Bison bison athabascae ) during the anovulatory and ovulatory seasons

Cited by 13 publications

References 43 publications

American Bison (Bison bison) reproductive endocrinology: serum Pregnancy Associated Glycoproteins (PAG), Progesterone, Estrone and Estrone-Sulfate in non pregnant animals and during gestation

American Bison (Bison bison) reproductive endocrinology: serum Pregnancy Associated Glycoproteins (PAG), Progesterone, Estrone and Estrone-Sulfate in non pregnant animals and during gestation

Effect of season and superstimulatory treatment on in vivo and in vitro embryo production in wood bison (Bison bison athabascae)

Embryo production by in vitro fertilization in wild ungulates: progress and perspectives – A Review

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