Aethomys ineptus
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Male and female |
Photoperiod |
South Africa |
This is a reproductive seasonal species restricted to the summer and fall months, in the south hemisphere. |
Muteka et al. (2006a)Muteka SP, Chimimba CT, Bennett NC. Reproductive seasonality in the Tete veld rat (Aethomys ineptus) (Rodentia: Muridae) from southern Africa. J Zool (Lond). 2006a;270(6):314-23. http://dx.doi.org/10.1111/j.1469-7998.2006.00140.x. http://dx.doi.org/10.1111/j.1469-7998.20...
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Aethomys namaquensis
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Male and female |
Photoperiod |
Southern Africa |
Pregnant and lactating females were observed only during spring and summer, besides a significant increase in testicular volume, seminiferous tubule diameter and testosterone plasma concentration in males. |
Muteka et al. (2006b)Muteka SP, Chimimba CT, Bennett NC. Reproductive seasonality in Aethomys namaquensis (Rodentia: Muridae) from southern Africa. J Mammal. 2006b;87(1):67-74. http://dx.doi.org/10.1644/05-MAMM-A-088R2.1. http://dx.doi.org/10.1644/05-MAMM-A-088R...
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Aethomys ineptus
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Male |
Photoperiod |
South Africa |
Both species exhibited significantly higher testicular mass when exposed to high photoperiod than during short light hours. |
Muteka et al. (2006c)Muteka SP, Chimimba CT, Bennett NC. Reproductive photoresponsiveness in Aethomys ineptus and A. namaquensis (Rodentia: Muridae) from southern Africa. J Zool (Lond). 2006c;268(3):225-31. http://dx.doi.org/10.1111/j.1469-7998.2005.00022.x. http://dx.doi.org/10.1111/j.1469-7998.20...
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Aethomys namaquensis
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Acomys dimidiatus
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Male and female |
Rainfall and temperature |
Saudi Arabia |
This animal is a seasonal breeder that can breed opportunistically. Male and female correlate reproductive recrudescence to rainfall. Pregnancies occur in most seasons apart from the winter. |
Sarli et al. (2016)Sarli J, Lutermann H, Alagaili AN, Mohammed OB, Bennett NC. Seasonal reproduction in the Arabian spiny mouse, Acomys dimidiatus (Rodentia: Muridae) from Saudi Arabia: The role of rainfall and temperature. J Arid Environ. 2016;124:352-9. http://dx.doi.org/10.1016/j.jaridenv.2015.09.008. http://dx.doi.org/10.1016/j.jaridenv.201...
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C57BL/6J mice
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Male |
Temperature |
Under laboratory conditions |
Heat caused by high temperature cause damage to the testicles, such as testicular atrophy, presence of vacuolization and perforations in the seminiferous tubule epithelium, germ cell death. |
Zhang et al. (2020)Zhang P, Zheng Y, Lv Y, Li F, Su L, Qin Y, Zeng W. Melatonin protects the mouse testis against heat-induced damage. Mol Hum Reprod. 2020;29(2):65-79. http://dx.doi.org/10.1093/molehr/gaaa002. PMid:31943111. http://dx.doi.org/10.1093/molehr/gaaa002...
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Cavia aperea
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Female |
Photoperiod |
Under laboratory conditions |
Female pups kept in groups of two matured at about 47 days when born into lengthening and 79 days when born into shortening day length. They kept under identical short-day conditions after weaning on day 20 of life. |
Trillmich et al. (2009)Trillmich F, Mueller B, Kaiser S, Krause J. Puberty in female cavies (Cavia aperea) is affected by photoperiod and social conditions. Physiol Behav. 2009;96(3):476-80. http://dx.doi.org/10.1016/j.physbeh.2008.11.014. PMid:19087883. http://dx.doi.org/10.1016/j.physbeh.2008...
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Cuniculus paca
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Female |
Rainfall |
Amazon rainforest |
The precipitation of upland forest fruiting was positively correlated with precipitation, which was causally related to higher rates of pregnancy, lactation, and weaning of offspring. |
El Bizri et al. (2018)El Bizri HF, Fa JE, Bowler M, Valsecchi J, Bodmer R, Mayor P. Breeding seasonality in the lowland paca (Cuniculus paca) in Amazonia: interactions with rainfall, fruiting, and sustainable hunting. J Mammal. 2018;99(5):1101-11. http://dx.doi.org/10.1093/jmammal/gyy102. http://dx.doi.org/10.1093/jmammal/gyy102...
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Fischer 344 rat (F344)
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Male |
Photoperiod |
Under laboratory conditions |
Rats held under photoperiods of ≥ 12 h of light/day showed increased growth, food intake and higher paired testes weight relative to rats held under photoperiods of ≤ 10 h of light/day. |
Tavolaro et al. (2015)Tavolaro FM, Thomson LM, Ross AW, Morgan PJG. Photoperiodic effects on seasonal physiology, reproductive status and hypothalamic gene expression in young male F344 rats. J Neuroendocrinol. 2015;27(2):79-87. https://doi.org/10.1111/jne.12241. PMid:25443173. https://doi.org/10.1111/jne.12241...
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Gerbilliscus leucogaster
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Male and female |
Rainfall and temperature |
Namibia |
The ovarian activity increased at the end of the dry period and throughout the wet months. During the wet months, pregnant and lactating females were found, besides a increase of testicular mass relative to body mass, testicular volume, and seminiferous tubule diameter in males. |
Muteka et al. (2018)Muteka SP, Chimimba CT, Bastos AD, Bennett NC. the reproduction pattern of in the Gerbilliscus cf. leucogaster (Rodentia: Muridae) from Namibia. Can J Zool. 2018;97(1):57-62. http://dx.doi.org/10.1139/cjz-2018-0090. http://dx.doi.org/10.1139/cjz-2018-0090...
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Lagostomus maximus maximus
|
Male |
Reproductive seasonality |
Argentina |
Greater number of morphological defects was observed in the period of decreased gonadal activity (33.8%, winter) than in the activity period (7.8%, summer-autumn). The morphological characteristics of sperm undergo significant changes during their reproductive cycle. |
Cruceño et al. (2013)Cruceño AM, de Rosas JC, Fóscolo M, Chaves EM, Scardapane L, Dominguez S, Aguilera-Merlo C. Effects of photoperiod on epididymal and sperm morphology in a Wild Rodent, the Viscacha (Lagostomus maximus maximus). Int Schol Res Not. 2013:128921. https://doi.org/10.5402/2013/128921. https://doi.org/10.5402/2013/128921...
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Lasiopodomys brandtii
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Male |
Photoperiod |
China |
It was displayed a synchronous peak in gonadal activity with annual day length around summer solstice. The hypothalamic photoperiod genes studied regulate seasonal breeding in a natural rodent population. |
Wang et al. (2019)Wang D, Li N, Tian L, Ren F, Li Z, Chen Y, Liu L, Hu X, Zhang X, Song Y, Hut RA, Liu XH. Dynamic expressions of hypothalamic genes regulate seasonal breeding in a natural rodent population. Mol Ecol. 2019;28(15):3508-22. http://dx.doi.org/10.1111/mec.15161. PMid:31233652. http://dx.doi.org/10.1111/mec.15161...
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Myoprocta exilis, Dasyprocta leporina, Cuniculus paca
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Male and female |
Rainfall and temperature |
French Guiana forest |
The species tended to breed in the period corresponding to the largest supply of fruits from their diets. It was linked to the seasonal importance of fruits in diets, the most aseasonal species having the most diversified diet during the poor fruit season. |
Dubost et al. (2005)Dubost G, Henry O, Comizzoli P. Seasonality of reproduction in the three largest terrestrial rodents of French Guiana forest. Mamm Biol. 2005;70(2):93-109. http://dx.doi.org/10.1016/j.mambio.2004.09.001. http://dx.doi.org/10.1016/j.mambio.2004....
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Wistar rat
|
Female |
Temperature |
Under laboratory conditions |
The high temperature is responsible for suppression of ovarian function by decreasing the expression of steroidogenic enzymes, estrogen and gonadotropin receptors in the ovary. |
Zheng et al. (2019)Zheng M, Nagaoka K, Watanabe G. Pre-pubertal exposure to high temperature impairs ovarian and adrenal gland function in female rats. J Vet Med Sci. 2019;81(2):279-86. http://dx.doi.org/10.1292/jvms.18-0644. PMid:30587674. http://dx.doi.org/10.1292/jvms.18-0644...
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