Variation in Gestation Length and Litter Size of the Golden Hamster, Mesocricetus Auratus

Soderwall, A. L.; Kent, Harry A.; Turbyfill, C. L.; Britenbaker, Alice L.

doi:10.1093/geronj/15.3.246

Cited by 48 publications

(18 citation statements)

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“…During anaphase II the bivalents move to opposite ends of the spindle, which rotates gradually through 90°, ability with aging results in the decline of litter sizes. Retarded development may result in reduction in implantations and litter sizes in aged hamsters [7][8][9][10][11][12]20]. In our preliminary study, about 25-30% of decline was observed in litter size of 43-week old hamsters as compared with younger females [20].…”

Section: Abnormalities In Fertilizationmentioning

confidence: 95%

Delay in Ovulation and Fertilization and Asynchronous Pronuclear Development in Aged Hamsters.

Suzuki

Moriguchi

Kida

et al. 1996

Journal of Reproduction and Development

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Section: Abnormalities In Fertilizationmentioning

confidence: 95%

Delay in Ovulation and Fertilization and Asynchronous Pronuclear Development in Aged Hamsters.

Suzuki

Moriguchi

Kida

et al. 1996

Journal of Reproduction and Development

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“…It has been shown that pregnancy time may be correlated with age. Soderwall et al (1960) reported that 1-month-old female hamsters have a mean gestation period of 373 h, 4-month-old female hamsters gave birth after 378 h of pregnancy, 8-month-old female hamsters have a pregnancy period of 386 h, and 14-month-old female hamsters gave birth after 402 h, i.e. they showed a 24-29 h longer pregnancy period than young female hamsters.…”

Section: Discussionmentioning

confidence: 99%

“…In this work we decided to extend our studies to adult (eight months old) nulliparous and multiparous female hamsters, studying early embryonic development and oviduct to uterine embryo transport (from the stage of two-cell to the stage of morulae), trying to carefully establish the moment of fertilization and taking into consideration the age and parity of the female hamster (Soderwall et al 1960, Blaha 1964). …”

mentioning

confidence: 99%

Effect of maternal age and parity on preimplantation embryo development and transport in the golden hamster (Mesocricetus auratus)

et al. 2005

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SummaryPreimplantation embryo development was studied in the golden hamster (Mesocricetus auratus). Three groups of regularly cycling female hamsters were used: (I) 30 nulliparous young female (NYF) hamsters; (II) 24 nulliparous adult female (NAF) hamsters and (III) 30 multiparous adult female (MAF) hamsters. Female hamsters were mated with male hamsters of proven fertility. Only 15 min were allowed for mating. The moment of ejaculation was registered. Female hamsters were killed from 60 to 69 h after coitus. Corpora lutea were counted in both ovarian surfaces. Oviducts and uterine horns were flushed separately and embryo number, stage of development and distribution were recorded. Adult female hamsters, nulliparous and multiparous, had significant higher ovulation rates than NYF, but their reproductive efficiency was significantly lower. Preimplantation embryo development and transport were highly synchronous in NYF, but not in adults. Morulae were observed in NYF as early as 62-63 h after coitus. In adult female hamsters, significant numbers of morulae were found until 66-67 h. On the contrary, in NYF four-cell embryos were detected only until 60-61 h, while four-cell embryos were found until 64-65 h in NAF, and until 66-67 h in MAF. Embryo transport from the oviduct to the uterus is practically completed at 62-63 h after coitus in NYF, while it is evidently retarded in adult animals. In NYF all eight-cell embryos reached the uterus by 62 h after coitus. In adult female hamsters, both nulliparous and multiparous, a considerable number of eight-cell embryos fail to migrate into the uterus even at 67 h after coitus.

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“…Soderwall, Kent, Turbyfill & Britenbaker (1960) reported that this decline begins at 14 months of age in the female hamster. Blaha (1964) also reported on the decline in fecundity in the hamster and concluded that the reduction in the litter size was due to an un¬ adaptable uterine environment during the early stages of nidation.…”

Section: Introductionmentioning

confidence: 97%

Closure of the Uterine Lumen at Implantation in Senescent Golden Hamsters

Thorpe¹,

Connors²,

Soderwall³

1974

Reproduction

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Summary. The uterus of the senescent hamster was examined for the appearance of a luminal closure reaction which normally coincides with implantation in the young animal. Closure in the aged animal was observed only near areas of implanting embryos. Both closure and implantation in the senescent female were found to be delayed approximately 12 hr. Possible correlations between the observations in this study and the decline in fecundity in aged animals is discussed.

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Variation in Gestation Length and Litter Size of the Golden Hamster, Mesocricetus Auratus

Cited by 48 publications

References 0 publications

Delay in Ovulation and Fertilization and Asynchronous Pronuclear Development in Aged Hamsters.

Delay in Ovulation and Fertilization and Asynchronous Pronuclear Development in Aged Hamsters.

Effect of maternal age and parity on preimplantation embryo development and transport in the golden hamster (Mesocricetus auratus)

Closure of the Uterine Lumen at Implantation in Senescent Golden Hamsters

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