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... Red fox ( Vulpes vulpes sp.) the hair cuticle is of crenellated type having relatively large cells, dimensionally unequal, polygonal and oblong in transversally sense. But, characteristic is their outline light sinuous and crenellated. In the Polar fox ( Vulpes lagopus sp.) the hair cuticle is also of crenellated type, but are its cells are narrower and more oblong in transversally sense than those ones from hair cuticle of Red fox. We observed that also the hair of investigated domestic Felidae do not presented a cuticle of same type with that of wild ones. Thus, the hair fibers collected from domestic cats (Felis catus , sp. Common breed) present the cuticle of denticulated type ( Fig. 2) . Its cells are narrow and oblong in transversally sense and characteristic is the presence of some cellular expansions, short and thin, which appear to form inter-prolongations with adjacent cells. A similar description of hair morphology in domestic cat has being communicated by Strickland (1963) and Baker (1971). Contrary, the hair fibers collected from Lynx ( Felis silvestris sp.) have cuticle of oval type, its cells are large of approximate oval shape and their outline being well linear marked. However, the identification of a certain cuticle type is not a sufficient element to establish the belonging of a hair fiber. Thus, a cuticle of interpenetrated type, as those one of hair collected from dog of German shepherd breed, is observed also in Leporidae family (wild and domestic rabbit species). A cuticle of undulated type, as those one of hair collected from wolf is also present in Campomilidae (coypu) precum ş i la Mustelidae (mink, ferret), and the hair fiber from Brown bear presents a cuticle of crenellated type, similar to those one from Red and Polar foxes. The denticulated type cuticle, as those one presents in domestic cat, is described also for the Suidae hair fibers. Nevertheless, some additional methods may be useful for the hair strands examination. Accordingly, for a high accuracy in establishing to which species belong a hair fiber are necessary also some micrometric measurements for hair fiber diameter (D), medullar diameter (M) and cortical diameter (C), cuticle cells’ length (E), medullar index (M/D) and cuticle index (E/D) (Cadar, 2009). Morphological details of lamellar cells from hair cuticle, which could have value of some species or even individual particularities, can be observed only in Scanning Electron Microscope. Dobril ă et al. (1978) cited by P ă i ş (1983) appreciated that “Two identical human hair fibers could be found in about 10,000 individuals, from where the importance that is conferred, with some reserves, in forensic ...
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Citations
... The hair is a cylindrical, flexible formation, composed by dead keratinocytes, resistant to postmortem chemical decomposition, thus keeping for long time their structural particularities. This quality made both human and animal hair study to have a great importance in forensic medical expertise (Kshirsagar et al., 2009), in archaeological studies and in mammal species identification (Paliu et al., 1979;Cadar, 2009;Cadar and Szentkuti, 2013;Cadar et al., 2014). In all these domains, hair can be biochemical analysed to testing the presence of some chemical contaminant substances, drugs or some nutritional deficiency. ...
The hair fiber study is very actual due to its implication especially in forensic medical expertise. It was studied the usual and SEM microscopic morphology of primary hair fibers collected from mature male dogs of five well-known breeds: Husky, Bichon Maltese, Golden retriever, Labrador and German Shepherd. Descriptive observations and quantitative data obtained by micrometry do not lead to significant differences to permit identification of one breed by simple hair examination. But, comparing the hair fiber quantitative parameters obtained in our study with those ones known in specialty literature concerning the human hair, we can conclude that there are differences among medullary index values and as index could be an identification criterion.
