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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
What happens to ear morphology on the way underground? A case study on the family Spalacidae.
 PLEŠTILOVÁ, Lucie
This PhD thesis is concerned with the effect of specialization to the subterranean environment on ear morphology in the rodent family Spalacidae. The outer, middle and inner ear morphology in four species with a different proportion of subterranean activity was described and analyzed. The Chinese bamboo-rat (Rhizomys sinensis) was identified as fossorial regarding its ear morphology. The strictly subterranean Gansu zokor (Eospalax cansus) possess a highly specialized subterranean ear morphology with a suggested acoustic fovea. Meanwhile, the less subterranean African root-rat (Tachyoryctes splendens) shares traits with both strictly subterranean and epigeic rodents. The aboveground characteristics are even more prominent in the fossorial giant root-rat (T. macrocephalus). Taken together, the results confirm that the ear morphology of spalacids mirrors their degree of fossoriality.
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Review of karyotype races of mole rats of the genera Spalax and Nannospalax and their geographic distribution
 Kučerová, Šárka ; Zima, Jan (advisor) ; Šťáhlavský, František (referee)
Mole rats are divided into two genera, Spalax and Nannospalax who live in the territory of South-East Europe and the Middle East. 5 different karyotypic races found in the genus Spalax that can be assigned to individual taxonomically recognized species. The genus Nannospalax has described in 83 karyotypic form or cytotypes that differ in fundamental characteristics of sets of chromosomes (2n, NF). The diploid number of chromosomes varies from 36 to 62, the number of autosomal arms from 62 to 120 and the number of arms of chromosome sets of females from 68 to 124. The three most commonly recognized species (Nannospalax leucodon, N. xanthodon, N. ehrenbergi) cannot clearly distinguish by karyological.
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Charakteristiky srsti podzemních hlodavců ve vztahu k jejich termální biologii
 VEJMĚLKA, František
The relation of fur to the thermal biology of mammals was studied. Qualitative and quantitative (length, density and insulation volume) fur parameters of six rodent species with subterranean activity were determined. The explored species vary in many characteristics, such as ecology or kinship.
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