The water mites (Acari, Hydrachnidia) of a little disturbed forest stream in southwest Germany — a study on seasonality and habitat preference, with remarks on diversity patterns in different geographical areas

Author(s):  
Reinhard Gerecke
2011 ◽  
Vol 4 (2) ◽  
pp. 102-114 ◽  
Author(s):  
Evgenyi N. Panov ◽  
Larissa Yu. Zykova

Field studies were conducted in Central Negev within the breeding range of Laudakia stellio brachydactyla and in NE Israel (Qyriat Shemona) in the range of an unnamed form (tentatively “Near-East Rock Agama”), during March – May 1996. Additional data have been collected in Jerusalem at a distance of ca. 110 km from the first and about 170 km from the second study sites. A total of 63 individuals were caught and examined. The animals were marked and their subsequent movements were followed. Social and signal behavior of both forms were described and compared. Lizards from Negev and Qyriat Shemona differ from each other sharply in external morphology, habitat preference, population structure, and behavior. The differences obviously exceed the subspecies level. At the same time, the lizards from Jerusalem tend to be intermediate morphologically between those from both above-named localities, which permits admitting the existence of a limited gene flow between lizard populations of Negev and northern Israel. The lizards from NE Israel apparently do not belong to the nominate subspecies of L. stellio and should be regarded as one more subspecies within the species.


2013 ◽  
Vol 22 (2) ◽  
pp. 181-188
Author(s):  
P.V. Tuzovskij

Two new water mite species, Torrenticola amplexella and T. krasnodarensis, from running waters of the North Caucasus (Krasnodar Kray) are described with illustrations.


2017 ◽  
Author(s):  
Jeremy B.C. Jackson ◽  
◽  
Emanuela Di Martino ◽  
Paul D. Taylor ◽  
Kenneth G. Johnson

1973 ◽  
Vol 18 (1) ◽  
pp. 110 ◽  
Author(s):  
Jerry R. Choate ◽  
Eugene D. Fleharty

Science ◽  
2021 ◽  
Vol 372 (6539) ◽  
pp. eabg0821 ◽  
Author(s):  
Katrina A. Lythgoe ◽  
Matthew Hall ◽  
Luca Ferretti ◽  
Mariateresa de Cesare ◽  
George MacIntyre-Cockett ◽  
...  

Extensive global sampling and sequencing of the pandemic virus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have enabled researchers to monitor its spread and to identify concerning new variants. Two important determinants of variant spread are how frequently they arise within individuals and how likely they are to be transmitted. To characterize within-host diversity and transmission, we deep-sequenced 1313 clinical samples from the United Kingdom. SARS-CoV-2 infections are characterized by low levels of within-host diversity when viral loads are high and by a narrow bottleneck at transmission. Most variants are either lost or occasionally fixed at the point of transmission, with minimal persistence of shared diversity, patterns that are readily observable on the phylogenetic tree. Our results suggest that transmission-enhancing and/or immune-escape SARS-CoV-2 variants are likely to arise infrequently but could spread rapidly if successfully transmitted.


2021 ◽  
Vol 27 ◽  
pp. e01619
Author(s):  
Shivish Bhandari ◽  
Daya Ram Bhusal ◽  
Maria Psaralexi ◽  
Stefanos Sgardelis

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