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- Andersson, Annelie, 1971-, et al.
(författare)
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Behaviour of European wild boars (Sus scrofa) in connection with farrowing in an enclosure
- 2011
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Ingår i: Mammalian Biology. - : Elsevier. - 1616-5047 .- 1618-1476. ; 76:3, s. 332-338
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Wild boars (Sus scrofa) are often kept in enclosures for hunting or meat production purposes in Sweden. The sows are known to undergo behavioural changes in connection with farrowing and their natural behaviours may be compromised by the limited area of the enclosure. The aim of this study was to quantitatively describe wild boar sows’ behaviour when farrowing in an enclosure. A field study was carried out in a hunting enclosure, where 1200 hours of behavioural recordings and data from 22 farrowings were collected. According to the results, the farrowing period could be divided into 3 phases: pre-farrowing, isolation and sociality phases (in relation to farrowing: day -14 to -1, day 1 to 8, day 9 to 14 respectively). The activity decreased during isolation and increased in the sociality phase (p<0.05), whereas the average distance to other individuals increased during isolation and decreased in the sociality phase (p<0.05). Nose contacts with other individuals increased in the isolation phase (p<0.05) and habitat use changed towards more protective habitats after farrowing. 68 % of the nests were situated in edges between two habitats of different vegetation density and 73% had some kind of protection to the north. We conclude that farrowing induces a number of changes in the activity, social behaviour and habitat preference in captive European wild boars. This may need attention when enclosures for this species are designed.
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| 2. |
- Kiiski, Heikki, et al.
(författare)
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Healthy human CSF promotes glial differentiation of hESC-derived neural cells while retaining spontaneous activity in existing neuronal networks
- 2013
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Ingår i: Biology open. - : The Company of Biologists. - 2046-6390. ; 2:6, s. 605-612
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Tidskriftsartikel (refereegranskat)abstract
- The possibilities of human pluripotent stem cell-derived neural cells from the basic research tool to a treatment option in regenerative medicine have been well recognized. These cells also offer an interesting tool for in vitro models of neuronal networks to be used for drug screening and neurotoxicological studies and for patient/disease specific in vitro models. Here, as aiming to develop a reductionistic in vitro human neuronal network model, we tested whether human embryonic stem cell (hESC)-derived neural cells could be cultured in human cerebrospinal fluid (CSF) in order to better mimic the in vivo conditions. Our results showed that CSF altered the differentiation of hESC-derived neural cells towards glial cells at the expense of neuronal differentiation. The proliferation rate was reduced in CSF cultures. However, even though the use of CSF as the culture medium altered the glial vs. neuronal differentiation rate, the pre-existing spontaneous activity of the neuronal networks persisted throughout the study. These results suggest that it is possible to develop fully human cell and culture-based environments that can further be modified for various in vitro modeling purposes.
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