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While in Europe the Scandinavian ice sheet came down to Warsaw about 52°N with extensive tundra to the south, the Laurentide ice sheet reached near 40°N. below the Great Lakes, with very little tundra and steppe. Such contrasts in geography have produced differences in the phylogeography of...
The Palearctic region supports relatively few avian species, yet recent molecular studies have revealed that cryptic lineages likely still persist unrecognized. A broad survey of cytochrome c oxidase I (COI) sequences, or DNA barcodes, can aid on this fr
Type locality:Black Sea, bay of St George monastery near Sevastopol, Crimean Peninsula, Ukraine. Type material:To our knowledge no type material remains. Nevertheless we refrain from designating a neotype, as there is no taxonomic need, i.e. no possibility of confusion in the species' area of...
The locals near Lake Ness (or "Loch" Ness in Scottish Gaelic) in northwestern Scotland affectionately refer to the mysterious creature rumored to be living in their waters as "Nessie." According to one popular hypothesis, Nessie is a plesiosaur, a large marine reptile that lived during the tim...
To understand the evolution of acoustic communication in animals, it is important to distinguish between the structure and the usage of vocal signals, since both aspects are subject to different constraints. In terrestrial mammals, the structure of calls is largely innate, while individuals have a ...
In the polar oceans, the primary productivity is restructured in winter, and can be very high in near-surface waters, thus generating migration towards the polar areas. Our data from Thin-billed prions further support this view, and indicate that seabird migration patterns may quickly respond to...
one site, defaunated algae were incubated amongst permanent algal stands that can act as a source population, while no algal stands were present in the second site [48]. Algal deposits near the permanent algal stands were more rapidly colonized, reached a fivefold higher density of nematodes ...
(Aconyx jubatus) show low MHC diversity, which correlates with a genome-wide loss of diversity presumably due to a genetic bottleneck about 10,000 years ago [118]. Also Northern elephant seals (Mirounga angustirostris) which were hunted near to extinction in the 19thcentury lost most of the ...
Each podocyte has a single cilium with a (9 × 2)+2 axoneme that adheres to the cell body by a basal body, short rootlets and an accessory centriole perpendicular to the basal body. A circle of 9–12 strong microvilli surrounds each cilium (Fig. 10D). Additional microvilli emanate ...