migration period
Dotaz
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- MeSH
- antropologie dějiny metody MeSH
- archeologie dějiny metody MeSH
- dějiny starověku MeSH
- dějiny středověku MeSH
- dieta * dějiny MeSH
- femur chemie MeSH
- kosti a kostní tkáň chemie metabolismus MeSH
- lidé MeSH
- migrace lidstva * dějiny MeSH
- olovo MeSH
- populační dynamika dějiny MeSH
- sociální hierarchie * MeSH
- sociální změna dějiny MeSH
- statistika jako téma MeSH
- zinek MeSH
- Check Tag
- dějiny starověku MeSH
- dějiny středověku MeSH
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- MeSH
- demografie MeSH
- emigrace a imigrace MeSH
- populační dynamika MeSH
- Geografické názvy
- Česká republika MeSH
- MeSH
- demografie MeSH
- populační dynamika MeSH
- statistická rozdělení MeSH
- Geografické názvy
- Česká republika MeSH
In many taxa, the most common form of sex-biased migration timing is protandry-the earlier arrival of males at breeding areas. Here we test this concept across the annual cycle of long-distance migratory birds. Using more than 350 migration tracks of small-bodied trans-Saharan migrants, we quantify differences in male and female migration schedules and test for proximate determinants of sex-specific timing. In autumn, males started migration about 2 days earlier, but this difference did not carry over to arrival at the non-breeding sites. In spring, males on average departed from the African non-breeding sites about 3 days earlier and reached breeding sites ca 4 days ahead of females. A cross-species comparison revealed large variation in the level of protandry and protogyny across the annual cycle. While we found tight links between individual timing of departure and arrival within each migration season, only for males the timing of spring migration was linked to the timing of previous autumn migration. In conclusion, our results demonstrate that protandry is not exclusively a reproductive strategy but rather occurs year-round and the two main proximate determinants for the magnitude of sex-biased arrival times in autumn and spring are sex-specific differences in departure timing and migration duration.
- MeSH
- migrace zvířat * MeSH
- ptáci fyziologie MeSH
- roční období MeSH
- rozmnožování MeSH
- sexuální faktory MeSH
- zpěvní ptáci fyziologie MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Evropa MeSH
- severní Afrika MeSH
Wild passerine birds (Passeriformes) from the northeastern part of the Czech Republic were examined for ectoparasites during the pre-breeding period in 2007. Two species of fleas of the genera Ceratophyllus and Dasypsyllus (Siphonaptera: Ceratophyllidae), and 23 species of chewing lice belonging to the genera Ricinus, Myrsidea, Menacanthus (Phthiraptera: Menoponidae), Brueelia, Penenirmus, and Philopterus (Phthiraptera: Philopteridae) were found on 108 birds of 16 species. Distribution of insect ectoparasites found on wild birds during pre-breeding was compared with previous data from the post-breeding period. There was no difference in total prevalence of chewing lice in pre-breeding and post-breeding periods. Higher prevalence of fleas and slightly higher mean intensity of chewing lice were found on birds during the pre-breeding period. There was a significant difference in total prevalence but equal mean intensity of chewing lice on resident and migrating birds.
- MeSH
- časové faktory MeSH
- chov MeSH
- divoká zvířata MeSH
- hmyz klasifikace růst a vývoj MeSH
- infestace ektoparazity epidemiologie parazitologie veterinární MeSH
- migrace zvířat MeSH
- nemoci ptáků epidemiologie parazitologie MeSH
- Passeriformes parazitologie MeSH
- Phthiraptera klasifikace růst a vývoj MeSH
- prevalence MeSH
- ptáci MeSH
- Siphonaptera klasifikace růst a vývoj MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Klíčová slova
- posttraumatické změny kostí, doba stěhování národů, Langobardi,
- MeSH
- archeologie MeSH
- fraktury kostí dějiny etiologie MeSH
- kosti a kostní tkáň zranění MeSH
- lidé MeSH
- násilí * dějiny MeSH
- pohřbívání dějiny MeSH
- římská říše dějiny MeSH
- úrazy a nehody dějiny MeSH
- vedení války * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- historické články MeSH
- Geografické názvy
- Česká republika MeSH
- starověké země MeSH
Cell fate modulation by adapting the surface of a biocompatible material is nowadays a challenge in implantology, tissue engineering as well as in construction of biosensors. Nanocrystalline diamond (NCD) thin films are considered promising in these fields due to their extraordinary physical and chemical properties and diverse ways in which they can be modified structurally and chemically. The initial cell distribution, the rate of cell adhesion, distance of cell migration and also the cell proliferation are influenced by the NCD surface termination. Here, we use real-time live-cell imaging to investigate the above-mentioned processes on oxidized NCD (NCD-O) and hydrogenated NCD (NCD-H) to elucidate cell preference to the NCD-O especially on surfaces with microscopic surface termination patterns. Cells adhere more slowly and migrate farther on NCD-H than on NCD-O. Cells seeded with a fetal bovine serum (FBS) supplement in the medium move across the surface prior to adhesion. In the absence of FBS, the cells adhere immediately, but still exhibit different migration and proliferation on NCD-O/H regions. We discuss the impact of these effects on the formation of cell arrays on micropatterned NCD. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1469-1478, 2017.
