A Craniometric Study of the Norway Rat

Gentile, Joseph

doi:10.2307/1375928

Cited by 4 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…described by the following authors in relevant literature, as follows: Serebrennikov (1930), Ognev (1937 and1947), Migulin (1938), Resetnik (1946), Gentile (1952), Cockrum (1954). 25 measurements were established, the definitions of which are given in table 1.…”

Section: Methodsmentioning

confidence: 99%

Craniometric variations in a population of the spotted souslik

Ciesielska¹,

Kupść²

1968

Acta Theriol.

View full text Add to dashboard Cite

The aim of these investigations was to analyse sex dimorphism and variations in the development of the skull of Citellus suslicus (G u 1-denstaedt, 1770) on the basis of a sample consisting of 194 individuals. Fisher's discriminant analysis was the method used, and the significance of the results obtained was checked by the Mahalanobis D 2 test. Sex dimorphism was found in the skull of the souslik, it being particularly marked even in young animals. With the exception of postorbital breadth the mean measurements are greater in males. In young sousliks all the characters are non-discriminant. In adult sousliks the following characters were found to be discriminant in definition of sex dimorphism: maximum length of the skull, maximum nasal breadth, postorbital breadth, maximum height of brain case, mandible length. Changes with development were found in the craniometric characters, the majority of them exhibiting growth with age. Nasal length, frontal length and inter-orbital constriction are most probably stable, altering very little with age, while postorbital breadth even decreases. The most distinctive characters from the aspect of changes with age are: maximum length of the skull, postorbital breadth (in males),, and nasal breadth in females. The following regularities in development of the souslik's skull can be distinguished: a) rate of development of different parts of the skull is uneven, and in consequence different discriminant characters dominate in different periods of the animal's life, and different correlations occur; b) proportion between height and length of the skull is maintained in both age groups; c) development of the mandible takes place evenly in all planes; d) the muscles of the mandible exert a considerable effect on the development of the parts of the skull connected with them; e) the frontal region exhibits considerable developmental stability. I. PROBLEMS DISCUSSED IN THE STUDYThe aim of this study is to investigate the sex dimorphism and variations in development of the skull of the Spotted souslik, Citellus suslicus (Guldenstaedt, 1770) in one population at Sławęcin near Hrubieszów in the Lublin province. The area inhabited by this population is uniform from the ecological aspect. The skulls were collected over a period of one month. The material is therefore of the required uniformity from the geographical, ecological and seasonal aspects, which permits of assuming that the basic factors forming the variations observed are the sex and age of the animals.Present address: B. Ciesielska, Warsaw, Komarowa 88 m 37, W. Kupść, Warsaw, J. Bruna 6 m 32.[151]

show abstract

Section: Methodsmentioning

confidence: 99%

Craniometric variations in a population of the spotted souslik

Ciesielska¹,

Kupść²

1968

Acta Theriol.

View full text Add to dashboard Cite

show abstract

“…In bone research, craniometry can offer qualitative and quantitative information about the size, the shape and the development of bone tissue. Gentile in 1952 reported that using external characteristics and cranial measurements often partially bases the descriptions of new forms on variations in measurements of different samples (1). The skull can be measured in a two-dimensional way, by either of these techniques: morphometry and cephalometry.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional craniometry: morphometry and cephalometry

Botero-González

Ortíz²,

Herrera-Rubio

2021

Ciencia e Innovación en Salud

View full text Add to dashboard Cite

Over the last twenty years, bone research has raised interest; the function, shape and alterations of bone tissue have been analyzed and reported. Craniometry is a method developed as a tool for the precise measurement of the skull and facial structures and it has been used not only for humans, but for a variety of mammals. Morphometry is used to study and quantitatively compare the shape variation of biological objects, organs and organisms. Cephalometry uses two-dimensional measurements of the head and face involving a radiographic analysis to provide data on soft tissue, dental and skeletal relationships. Papers regarding bone research are difficult to access and usually, craniometry and morphometry are reported separately. The object of this article is to report a two-dimensional craniometry performed in rats, using both morphometry and cephalometry. This specific craniometry is a functional, well established method which involves the entire anatomical aspects of the skull.

show abstract

Non-Geographic Variation in Cranial Measurements of Wild-Taken Peromyscus leucopus noveboracensis

Cockrum¹

1954

Journal of Mammalogy

View full text Add to dashboard Cite

A Craniometric Study of the Norway Rat

Cited by 4 publications

References 0 publications

Craniometric variations in a population of the spotted souslik

Craniometric variations in a population of the spotted souslik

Two-dimensional craniometry: morphometry and cephalometry

Non-Geographic Variation in Cranial Measurements of Wild-Taken Peromyscus leucopus noveboracensis

Contact Info

Product

Resources

About