scholarly journals European common frog (Rana temporaria) recolonised Switzerland from multiple glacial refugia in northern Italy via trans- and circum-Alpine routes

2019 ◽  
Author(s):  
A Jansen van Rensburg ◽  
M Robin ◽  
B C Phillips ◽  
J Van Buskirk

AbstractThe high mountain ranges of western Europe have had a profound effect on the recolonisation of Europe from glacial refugia. The Alps present a particularly interesting case, because they present an absolute barrier to dispersal to most lineages, obstructing recolonisation from multiple refugia in the Italian Alps. Here we investigate the effect of the European Alps on the the phylogeographic history of Rana temporaria across its range in Switzerland. Based on partial cytochrome b and COX1 sequences we find two mitochondrial lineages that occur roughly north and south of the alpine ridge bisecting Switzerland, with contact zones between them in the east and west. The northern haplogroup falls within the previously identified common western European haplogroup, while the southern haplogroup is unique to Switzerland. We find that the lineages diverged ~110 kya, approximately the onset of the last glacial maximum, indicative of origins in separate refugia. Phylogenetic analyses suggest that the lineages originate from two refugia in northern Italy, and colonised Switzerland via trans- and curcum-alpine routes. Our results show that the European Alps is a semi-permeable barrier to dispersal for R. temporaria, and have contributed to the complex recolonisation history of Switzerland.

2015 ◽  
Vol 36 (4) ◽  
pp. 417-424 ◽  
Author(s):  
Alexandre Boissinot ◽  
Pierre Grillet ◽  
Aurélien Besnard ◽  
Olivier Lourdais

Traditional farming landscape in western Europe is made of a complex mosaic of pastures, cultures, ponds and hedgerows connected with woods. Previous observations in the common frog species suggest that lowland populations are closely associated to wood cover and our aim was to test the validity of this assumption. We studied common frog occurrence and abundance in western central France (Deux-Sèvres department) close to the southern margin of lowland distribution. Our results pointed out that the proportion of woods surface around sampled areas (1 ha) was a critical determinant of common frog presence and abundance. Extensive farming, which maintains a mosaic of small woods, may provide a robust conservation tool for this species.


Author(s):  
Р.Г. ДЗАТТИАТЫ

В результате процессов, сопровождавших Великое переселение народов, аланы, попав в Западную Европу, были ассимилированы, оставив во Франции, Северной Италии, Испании, Англии несколько сотен топонимов, связанных с ними. Следы пребывания алан на Западе впервые были обобщены В.А. Кузнецовым и В.К. Пудовиным. Появление труда американского ученого Б. Бахраха «Аланы на Западе» сняли скептицизм по отношению к роли алан в истории народов Западной Европы. О роли алан в исторических событиях Западной Европы раннего и зрелого Средневековья было отчетливо заявлено в трудах В.Б. Ковалевской, Франко Кардини, Говарда Рида, Скотта Литлтона, Линды Малкор. Особенно замечательна объемная работа Агусти Алемани «Аланы в древних и средневековых письменных источниках». У алан было заимствовано устройство конного войска, а вместе с этим, вероятно, и экипировка всадника, важной деталью которой был воинский пояс. Пряжка со щитком такого пояса служила у алан маркером статуса: в зависимости от того, из какого материала она была изготовлена (золото, серебро, бронза), она указывала на место в социальной иерархии. Трехлепестковый орнамент в результате модификаций вполне мог стать основой или прообразом особого знака-символа – так называемой «королевской лилии». Схему трансформации трехлепесткового узора в лилию можно проиллюстрировать рисунками пряжек. Надо полагать, что аланы оставили свой след не только в топонимике, организации конного войска, но и в орнаментике, фольклоре, антропонимике и других проявлениях культуры, которые необходимо тщательно исследовать. As a result of the processes that accompanied the Great Migration of Nations, the Alans, having fallen into Western Europe, were assimilated, leaving several hundred place names associated with them in France, Northern Italy, Spain, and England. The traces of the Alans' stay in the West were first generalized by V.A. Kuznetsov and V.K. Pudovin. The appearance of the work of the American scientist B.S. Bachrach "Alans in the West" removed skepticism regarding the role of the Alans in the history of the peoples of Western Europe. The role of the Alans in the historical events of Western Europe of the early and mature Middle Ages was clearly stated in the works of V.B. Kovalevskaya, Franco Cardini, Howard Reed, Scott Littleton, Linda Malkor. Particularly remarkable is the voluminous work of Agusti Alemany "Alans in ancient and medieval written sources." The Alans borrowed the device of the horse army, and with it, probably, the equipment of the horseman, an important detail of which was the military belt. The buckle with the shield of such a belt served as a status marker for the Alans: depending on what material it was made of (gold, silver, and bronze) it indicated a place in the social hierarchy. As a result of modifications, the three-petal ornament could very well become the basis or prototype of a special sign-symbol – the so-called “royal lily”. The transformation pattern of a three-petal pattern into a lily can be illustrated with buckle patterns. It must be assumed that the Alans left their mark not only in toponymy, organization of the cavalry army, but also in ornamentation, folklore, anthroponymy and other cultural manifestations, which must be carefully studied.


Copeia ◽  
1962 ◽  
Vol 1962 (3) ◽  
pp. 667 ◽  
Author(s):  
Richard G. Zweifel ◽  
R. Maxwell Savage

Development ◽  
1970 ◽  
Vol 23 (2) ◽  
pp. 375-384
Author(s):  
Mia L. Buehr ◽  
Antonie W. Blackler

Bounoure (1934) first described the presence in the egg of the frog Rana temporaria of a special cytoplasmic differentiation, which he termed the ‘germinal cytoplasm’. He was able to trace the developmental history of this plasm as it moved from its original position just under the cortex of the vegetal pole of the fertilized egg, to its inclusion in a number of cells of the early gastrula endoderm, and also mapped the migration of these cells into the gonad rudiments. Bounoure believed that the germinal cytoplasm is the definitive germcell determinant, and that its presence in a cell is a prerequisite for the cell to undergo meiosis and differentiate into a gamete. Since Bounoure's discovery, germinal cytoplasm has been described in the eggs of a number of other anuran species (Nieuwkoop, 1956; Blackler, 1958; DiBerardino, 1961; Gipouloux, 1962) and a number of techniques have been used to test Bounoure's determinant hypothesis.


2001 ◽  
Vol 120 (5) ◽  
pp. A366-A366
Author(s):  
C MAZZEO ◽  
F AZZAROLI ◽  
A COLECCHIA ◽  
S DISILVIO ◽  
A DORMI ◽  
...  

Author(s):  
Raphael Georg Kiesewetter ◽  
Robert Muller

2011 ◽  
Vol 4 (2) ◽  
pp. 192-194
Author(s):  
Georgy A. Lada ◽  
V. Y. Nedosekin

A small isolated population of tesselated snake, Natrix tesselata was found in the Upper Don (Lipetsk Region, Russia). It is the first record of this species in the Central Chernozem Territory of Russia, which is separated from the northern border of the main range by the distance of about 200 km. An isolated population of common frog, Rana temporaria and phenetically peculiar population of fire-bellied toad, Bombina bombina are found here too. Faunistic aspect of new herpetological records is discussed.


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