Timing and Speed of Migration in North and West European Populations of Sylvia Warblers

1995 ◽  
Vol 26 (1) ◽  
pp. 39 ◽  
Author(s):  
Thord Fransson
PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e63248 ◽  
Author(s):  
Júlio M. Neto ◽  
Luís Gordinho ◽  
Eduardo J. Belda ◽  
Marcial Marín ◽  
Juan S. Monrós ◽  
...  

Zootaxa ◽  
2009 ◽  
Vol 2262 (1) ◽  
pp. 40-52 ◽  
Author(s):  
ARTYUSHIN I. V. ◽  
BANNIKOVA A. A. ◽  
LEBEDEV V. S. ◽  
KRUSKOP S. V.

Interspecific hybridization was proposed as one of the explanations for the lack of differentiation between mtDNA of the morphologically divergent bats Eptesicus serotinus and E. nilssonii. However, only West European populations of these species were examined so far. The cytochrome b mitochondrial gene sequences of E. serotinus originating from Russia were compared with those of other North Palaearctic Eptesicus. Common serotines from the Caucasus, Central and South Russia constitute a separate monophyletic group, distinct from western E. serotinus populations, E. nilssonii, and also from E. isabellinus. Only a common serotine from Kaliningrad region proved to be a member of the West European clade. According to these results one may suppose that most of Russian population of E. serotinus escaped the hybridization event that led to fixation of alien mitochondrial genome in the West European populations. Given that (i) preliminary nuclear data support the distinction between E. serotinus and E. nilssonii and (ii) E. serotinus appears morphologically homogeneous throughout the European part of its range, we consider that this past mtDNA introgression has no direct taxonomic implications. For the first time included in a molecular phylogenetic analysis, E. gobiensis was shown to be a full species, related to E. nilssonii. From our mtDNA phylogenetic tree, the taxonomic validity of the subgenus Amblyotus appears doubtful.


2021 ◽  
Vol 118 (28) ◽  
pp. e2024994118
Author(s):  
Alexia Mouchet ◽  
Ella F. Cole ◽  
Erik Matthysen ◽  
Marion Nicolaus ◽  
John L. Quinn ◽  
...  

Heterogeneous selection is often proposed as a key mechanism maintaining repeatable behavioral variation (“animal personality”) in wild populations. Previous studies largely focused on temporal variation in selection within single populations. The relative importance of spatial versus temporal variation remains unexplored, despite these processes having distinct effects on local adaptation. Using data from >3,500 great tits (Parus major) and 35 nest box plots situated within five West-European populations monitored over 4 to 18 y, we show that selection on exploration behavior varies primarily spatially, across populations, and study plots within populations. Exploration was, simultaneously, selectively neutral in the average population and year. These findings imply that spatial variation in selection may represent a primary mechanism maintaining animal personalities, likely promoting the evolution of local adaptation, phenotype-dependent dispersal, and nonrandom settlement. Selection also varied within populations among years, which may counteract local adaptation. Our study underlines the importance of combining multiple spatiotemporal scales in the study of behavioral adaptation.


2014 ◽  
Vol 9 ◽  
pp. 179-185 ◽  
Author(s):  
M.H.D. Larmuseau ◽  
N. Vanderheyden ◽  
A. Van Geystelen ◽  
M. van Oven ◽  
M. Kayser ◽  
...  

1959 ◽  
Vol 1 (2) ◽  
pp. 164-188 ◽  
Author(s):  
John T. Krause

Current population theory depends heavily on the hypothesis that a demographic revolution occurred in West European countries roughly between 1750 and 1880. According to this hypothesis, European death rates averaged at least 35 per 1,000 prior to 1750; hence, even very high birth rates did not enable populations to recover rapidly from the effects of catastrophes, which are supposed to have been frequent and intense. Only after the advances, mainly hygienic, which began about 1750 did the death rate commence a long-term decline. Because fertility remained high, West European populations grew more rapidly than they had ever done. Eventually, urbanization and industrialization sapped the forces which maintainted high birth rates, and low fertility became the major cause of low Western rates of growth.Since currently under-developed populations have high vital rates, it has been suggested that demographic principles are transcultural and that Western demographic patterns will be repeated.


2021 ◽  
Vol 108 (4) ◽  
Author(s):  
Olga S. Golosova ◽  
Marina V. Kholodova ◽  
Ilya A. Volodin ◽  
Elena V. Volodina ◽  
Eugeny Y. Likhatsky ◽  
...  

1997 ◽  
Vol 77 (02) ◽  
pp. 329-331 ◽  
Author(s):  
Guglielmina Pepe ◽  
Olga Rickards ◽  
Olga Camacho Vanegas ◽  
Tamara Brunelli ◽  
Anna Maria Gori ◽  
...  

SummaryA difference in the prevalence of venous thromboembolism (TE) in major human groups has been described and an uneven distribution of FV Leiden mutation over the world has recently been reported.We investigated FV Leiden mutation in 584 apparently healthy sub#jects mostly from populations different from those previously investi#gated: 170 Europeans (Spanish, Italians), 101 sub-saharan Africans (Fon, Bariba, Berba, Dendi), 115 Asians (Indonesians, Chinese, Tharus), 57 Amerindians (Cayapa), 84 Afroamericans (Rio Cayapa, Viche), and 57 Ethiopians (Amhara, Oromo).The mutation was detected in only 1/115 Asian (Tharu) and in 5/170 Europeans (4 Italians, 1 Spanish).These data confirm that in non-Europeans the prevalence of FV mutation is at least 7 times lower than in Europeans and provide indirect evidence of a low prevalence not only of the FV Leiden gene but also of other genes leading to more severe thrombophilia. Finally, findings from the literature together with those pertaining to this study clearly show a marked heterogeneity among Europeans.


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