Kurt ve Alman Çoban Köpeğinde Kafatasının Geometrik Morfometrik Analizi

Tandir

et al. 2023

Animals

The use of carnivores as experimental models in auditory biology has led to a significant improvement regarding our understanding of the structure and function of the ear. Considering that data regarding the anatomy of the middle ear in the red fox are rare, this study aimed to describe the morphological and morphometrical features of the auditory ossicles in the red fox, as well as to provide their shape characteristics by geometric analysis. Nine adult red foxes were used in the study. The malleus, incus and stapes were extracted from the middle ear, prepared, photographed and measured using the software. For the geometric analysis, 19 landmarks were used. Following Principal Component Analysis (PCA), PC1 was found to explain approximately half of all variance (incus: 49.97%; malleus: 49.93%; stapes: 58.49%). The study demonstrated the similar anatomical organization of the auditory ossicles in line with important morphometric and basic geometric data, which can contribute to this field and add a useful perspective to the literature.

Section: Discussionmentioning

confidence: 99%

Geometric and Morphometric Analysis of the Auditory Ossicles in the Red Fox (Vulpes vulpes)

Hadžiomerović

Tandir

et al. 2023

Animals

“…Photographs or x‐ray images were generally used for 2D methods (Duro et al, 2021; Gündemir et al, 2020; Gündemir et al, 2021). Especially in the veterinary field, many taxonomic and dimorphic studies have been carried out using this method (Albayrak & Aytek, 2022; Demircioglu et al, 2021; Gürbüz et al, 2020; Szara et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Shape differences of the Carina sterni in birds of various locomotion types

Szara

SPATARU

et al. 2022

Anat Histol Embryol

The skeletal system of birds differs from that of reptiles or mammals. This is due to the adaptation of these animals to flight. Several bones are pneumatized by diverticula of air sacs associated with the respiratory system including the sternum (Claessens, 2009;Koenig et al., 2016).Phylogenetically, birds have evolved from dinosaurs over 100 million years ago and the groups of birds explosively diversified, nowadays being registered more than 10,000 species being registered, distributed all over the globe, being adapted to diverse ecological habitats, lifestyle, and ranging in size from the tiny bee hummingbird (∼2 g) to the ostrich (∼140,000 g) (

“…In addition to protecting vital organs such as the brain and cerebellum, it also includes the beginning of the digestive and respiratory tracts (Constantinescu & Schaller, 2012). Besides these functional structures, the skull as well as mandible also has distinguishing traits for species and genders (Demircioğlu et al, 2021; Gündemir et al, 2020; Gürbüz et al, 2020; Hadžiomerović et al, 2022). These distinctive features make it the most frequently utilized skeleton bone in taxonomy (Szara et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Radiographic analysis of skull in Van Cats, British Shorthairs and Scottish Folds

Akcasiz

Yılmaz

et al. 2023

Anat Histol Embryol

The most significant bone used in taxonomic research is the skull. This study attempted to identify differences between the three cat species by measuring the skulls of each using computed tomography sections. The study used a total of 32 cat skulls, including 16 Van Cats, eight British Shorthairs and eight Scottish Folds. Van Cat had the highest values for cranial and skull length, whereas British Shorthair had the lowest values. The difference between the British Shorthair and Scottish Fold skull length and cranial length measures was not statistically significant. However, the Van Cat skull length result was statistically different from other species (p < 0.05). Scottish Fold had the broadest head (cranial width: 41.02 ± 0.79 mm). These results demonstrated that the scull of the Van Cat was longer but thinner than that of other species.In comparison to other species, the form of the Scottish Fold skull was more rounded.Internal height of cranium measurements for Van Cat and British Shorthair were statistically significant. In Van Cats, this measurement was 27.81 ± 1.58 mm, while in British Shorthairs, it was 30.23 ± 1.89 mm. Measurements of the foremen magnum were not statistically significant for any species. Van Cat's measures for the foramen magnum were the highest (Foramen magnum height: 11.59 ± 0.93 mm; Foramen magnum width: 14.18 ± 0.70 mm). Scottish Fold had the highest cranial index (Cranial index: 55.50 ± 4.02). Van Cat had the lowest value for this (Cranial index: 50.19 ± 2.16). Van Cat's cranial index value differed statistically from that of other species (p < 0.05).Between species, the foramen magnum index was not significant. None of the index values were statistically significant for Scottish Fold and British Shorthair. Foramen magnum width had the highest age-to-measurement value correlation (r = 0.310), although it was statistically insignificant. Skull length had the highest weight-tomeasurement value correlations (R = 0.809), and it proved to be statistically significant. Skull length was the measuring value that distinguished male and female the most clearly (p = 0.000).