Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea)

Ruebensam K, Hribal R, Jewgenow K, Günther A (2015)
Theriogenology 84(4): 639-644.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Ruebensam, K.; Hribal, R.; Jewgenow, K.; Günther, AnjaUniBi
Abstract / Bemerkung
Pronounced seasonal variations in day length, temperature, and resource availability characterize the temperate regions and strongly influence the animals living in these environments. To survive and reproduce successfully, animals must allocate resources among competing physiological systems, and they usually adjust their time of breeding to the most adequate season. Here, we examined whether reproductive investment in the wild guinea pig (Cavia aperea) differs across seasons. We kept animals in combined indoor-outdoor enclosures under natural light and temperature year-round. We measured littering probability, litter size, and birth weight, as well as maternal weight loss during lactation. In addition, we measured ovulation rate as a parameter to adjust reproductive investment prenatally. Our data reveal strong seasonal variations in reproductive traits despite the fact that the animals reproduced year-round. The results show a reduced reproductive investment in winter, indicated by a lower litter size and birth weight of pups, whereas investment was highest in warm seasons (summer and autumn) with higher litter size and birth weight. Maternal weight loss in lactation was highest in cold seasons even if the litter size was lower. Furthermore, we found the regulation on the proximate level of the reproductive investment, the ovulation rate, to differ significantly between the seasons. (C) 2015 Elsevier Inc. All rights reserved.
Stichworte
Investment; Reproduction; Litter size; Birth weight; Ovulation; Guinea pig
Erscheinungsjahr
2015
Zeitschriftentitel
Theriogenology
Band
84
Ausgabe
4
Seite(n)
639-644
ISSN
0093-691X
Page URI
https://pub.uni-bielefeld.de/record/2772446

Zitieren

Ruebensam K, Hribal R, Jewgenow K, Günther A. Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea). Theriogenology. 2015;84(4):639-644.
Ruebensam, K., Hribal, R., Jewgenow, K., & Günther, A. (2015). Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea). Theriogenology, 84(4), 639-644. doi:10.1016/j.theriogenology.2015.04.023
Ruebensam, K., Hribal, R., Jewgenow, K., and Günther, A. (2015). Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea). Theriogenology 84, 639-644.
Ruebensam, K., et al., 2015. Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea). Theriogenology, 84(4), p 639-644.
K. Ruebensam, et al., “Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea)”, Theriogenology, vol. 84, 2015, pp. 639-644.
Ruebensam, K., Hribal, R., Jewgenow, K., Günther, A.: Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea). Theriogenology. 84, 639-644 (2015).
Ruebensam, K., Hribal, R., Jewgenow, K., and Günther, Anja. “Seasonally different reproductive investment in a medium-sized rodent (Cavia aperea)”. Theriogenology 84.4 (2015): 639-644.

3 Zitationen in Europe PMC

Daten bereitgestellt von Europe PubMed Central.

Senescence and costs of reproduction in the life history of a small precocial species.
Trillmich F, Geißler E, Guenther A., Ecol Evol 9(12), 2019
PMID: 31380034
Blastocyst recovery and multifactorial gene expression analysis in the wild guinea pig (Cavia aperea).
Hribal R, Guenther A, Rübensam K, Jewgenow K., Theriogenology 86(5), 2016
PMID: 27264741

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