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1
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Parameters of protein and iron metabolism in dairy cows during periparturient period

100%
Kurpinska A., Jarosz A., Skrzypczak W.
Acta Scientiarum Polonorum. Zootechnica
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2019
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tom 18
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nr 3
2
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Effects of temperature and photoperiod on glucose, glycerol and glycogen concentrations in Helix pomatia Linnaeus, 1758 in spring and autumn

80%
Nowakowska A., Caputa M., Rogalska J.
Folia Malacologica
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2011
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tom 19
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nr 3
One of the variables oscillating seasonally in Helix pomatia L., described in our previous paper, was their rudimentary cryoprotection provided by modest increases in haemolymph glucose and glycerol concentrations in autumn and early spring, respectively. Because factors governing cryoprotective responses are unknown, we decided to investigate the effects of spring and autumn acclimation of H. pomatia to different thermal and photoperiod conditions on the changes in haemolymph concentrations of glucose and glycerol and on the glycogen level in selected organs. Neither acclimation to short-day photoperiod nor low ambient temperature evoked increase in glucose and glycerol concentration in spring and autumn. Both acclimation variants decreased hepatopancreatic glycogen level. The rudimentary freeze-tolerance in H. pomatia seems to be a combined effect of cold and short-day photoperiod and might also be affected by their nutritional and reproductive status. The effect of exposure to frost-bite is also likely to be involved.
3

Influence of food availability and reproductive status on the diet and body condition of the European lynx in Finland

80%
Pulliainen E., Lindgren E., Tunkkari P. S.
Acta Theriologica
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1995
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tom 40
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nr 2
The carcasses of the 497 European lynx Lynx lynx (Linnaeus, 1758) killed in two areas in Finland in the 1980s were sexed, the nutritional status and diet of the lynx determined and the breeding stage of the females checked. There was no significant deviation in the sex ratio from 50:50 in any often hunting seasons. Fifty-three percent of the females over 1 year of age had given birth the previous spring, the mean litter size from the last pregnancy being 2.33 ± 0.73 (x ± SD, n = 82). In E Finland 86.2% of the winter diet consisted of hares, whereas in SW Finland the lynx consumed hares and white-tailed deer equally. There was no difference in diet between the sexes or age categories in E Finland, but in the white-tailed deer area of SW Finland the male lynx consumed more deer and hares less frequently than the females (p < 0.05). The lynx in SW Finland were on average, in a much better nutritional condition than those of E Finland. The male lynx in both areas had gained more depot fat than the females, on average a difference arising primarily from the smaller amount of fat in the female lynx which had given birth the previous spring. There were positive correlations in E Finland in all the age and sex categories between hare density and mesentery-omentum fat whereas snow depth produced negative correlation coefficients with the mesentery-omentum fat showing a significance of 90% in the adult females.
4

Characteristics of Clethrionomys glareolus and Apodemus flavicollis individuals recruited to isolated populations on Crabapple Island [Mazurian Lake District, Poland]

80%
Dudek D., Alcheikh B.
Polish Journal of Ecology
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2002
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tom 50
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nr 1
Crabapple Island, a 4-ha island covered with a mixed forest dominated by Tilio - Carpinetum Traczyk 1962, is situated on Lake Bełdany (53°42'N, 21°35'E) at a distance of about 120 m from the mainland. Materials were collected by using the CMR (catch-mark-release) method during five 7-day censuses conducted each year in 1994-1998. The recruitment of new individuals to the trappable part of the bank vole and yellow-necked mouse populations was compared with respect to the number of new-captured individuals, their age, and reproductive status. The age of new-captured individuals was estimated from growth curves. It was observed that when the populations of the two species were more abundant, the first-captured individuals were older than when population numbers were lower. The proportion of mature individuals (including pregnant females) in the group of all individuals captured for the first time was higher for the yellow-necked mouse than for the bank vole (48 and 15%, respectively). In both species, the number of mature new-captured individuals was negatively correlated with the total number of conspecific females present in the population. In the case of the bank vole (probably also of the yellow-necked mouse), this may be related with territoriality of mature females. As yellow-necked mice were first captured at an older age than bank voles, this may be a source of errors in estimates of numbers of immature individuals and, consequently, in the analysis of the population structure of this species.
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