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Reproductive performance and gestational effort in relation to dietary fatty acids in guinea pigs

Journal of Animal Science and Biotechnology 2017年第3期8卷 613-623页

作者： Matthias Nemeth Eva Millesi Carina Siutz Karl-Heinz Wagner Ruth Quint bernard wallner Department of Behavioural Biology University of ViennaAlthanstrasse 141090 ViennaAustria Department of Nutritional Sciences University of ViennaAlthanstrasse 141090 ViennaAustria Department of Anthropology University of ViennaAlthanstrasse 141090 ViennaAustria

Background： Dietary saturated（SFAs） and polyunsaturated（PUFAs） fatty acids can highly affect reproductive functions by providing additional energy, modulating the biochemical properties of tissues, and hormone secretions. In precocial mammals such as domestic guinea pigs the offspring is born highly developed. Gestation might be the most critical reproductive period in this species and dietary fatty acids may profoundly influence the gestational effort. We therefore determined the hormonal status at conception, the reproductive success, and body mass changes during gestation in guinea pigs maintained on diets high in PUFAs or SFAs, or a control ***： The diets significantly affected the females＇ plasma fatty acid status at conception, while cortisol and estrogen levels did not differ among groups. SFA females exhibited a significantly lower body mass and litter size, while the individual birth mass of pups did not differ among groups and a general higher pup mortality rate in larger litters was diminished by PUFAs and SFAs. The gestational effort, determined by a mother＇s body mass gain during gestation, increased with total litter mass, whereas this increase was lowest in SFA and highest in PUFA individuals. The mother＇s body mass after parturition did not differ among groups and was positively affected by the total litter mass in PUFA ***： While SFAs reduce the litter size, but also the gestational effort as a consequence, PUFA supplementation may contribute to an adjustment of energy accumulations to the total litter mass, which may both favor a mother＇s body condition at parturition and perhaps increase the offspring survival at birth.

关键词： Body mass Female reproduction Gestation Litter size Polyunsaturated fatty acid Saturated fatty acid Total litter mass

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Tourism may trigger physiologically stress response of a long-term habituated population of golden snub-nosed monkeys

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Current Zoology 2021年第4期67卷 465-467页

作者： Haochun Chen Hui YAO Xiangdong Ruan bernard Wallinier Julia Ostner Zuofu Xiang College of Life Science and Technology Central South University of Forestry&TechnologyChangsha410004China Shennongjia National Park Hubei ProvinceShennongjia Forest DistrictHubei442411China Academy of Forest Inventory and Planning State Forestry and Grassland AdministrationBeijing100714China Department of Behavioural Biology Faculty of Life SciencesUniversity of ViennaVienna1090Austria Departmentfor Behavioral Ecology University of GottingenKellnerweg 6GöttingenD-37077Germany

Wildlife tourism is a thriving form of nature-based tourism that can provide revenue for conservation funds,and increase public awareness of biodiversity conservation(Xiang et al.2011).Tourism,however,may induce behavioral and physiological stress responses on animals(Marechal 2015;Beehner and Bergman 2017).Part of the physiological stress response is increased activity of the hypothalamic-pituitary-adrenal(HPA)axis,resulting in the systemic elevation of *** increase of glucocorticoids in the bloodstream leads to rapid mobilization of stored energy reserves and inhibitions of nonimmediately critical activities like growth,reproduction,and digestion in response to environmental challenges(Beehner and Bergman 2017).

关键词： revenue tourism conservation

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