نتایج جستجو برای: morphometric traits
تعداد نتایج: 116605 فیلتر نتایج به سال:
The Malagasy Camponotus edmondi species group is revised based on both qualitative morphological traits and multivariate analysis of continuous morphometric data. To minimize the effect of the scaling properties of diverse traits due to worker caste polymorphism, and to achieve the desired near-linearity of data, morphometric analyses were done only on minor workers. The majority of traits exhi...
Morphological traits can be highly variable over time in a particular geographical area. Different selective pressures shape those traits, which is crucial in evolutionary biology. Among these traits, insect wing morphometry has already been widely used to describe phenotypic variability at the inter-specific level. On the contrary, fewer studies have focused on intra-specific wing morphometric...
Evaluation of sexual dimorphism on the basis morphometric traits in Talysh toad, Bufo eichwaldi (Litvinchuk, Borkin, Skorinov & Rosanov, 2008), along with evaluation conservation status species
ured. Morphological changes were analyzed by both multivariate and geometric morphometric methods. Results obtained by the two methods were in concordance. Shape analysis allows us to discriminate predator-induced, competitor-induced and drying-induced morphotypes. Life-history traits under isolated environmental factors were also consistent with precedent studies. In complex environments we ob...
Reciprocal cross effects (i.e., differences between reciprocal hybrids that are developed by reversing the strains from which the dam and the sire are taken) are commonly used as a measure of sex-linkage or maternal effects. Morphometric traits were studied in a cross between two geographic populations of Drosophila kikkawai, i.e. a northern and southern. Average values in the F1 was similar an...
This study was carried out with the aim of investigating the possibility of separation of Caucasian faeces with the aid of grapefruit traits (Berg, 1916) Knipowitschia caucasica between two areas of Gomishan wetland and Gorgan Bay in the spring of 1395. In this study 120 samples of this species were studied. In this study, the method of analysis of the main components of the possibility of sepa...
Six morphometric traits (height at withers, body length, chest girth, ear length, tail length and body weight) were analyzed to characterize from a breed point of view 1981 sheep from four ovine breeds (Bellary, Kenguri, Hassan and Mandya) of southern peninsular zone of India. Discriminant Function Analysis was used to distinguish between four breeds by morphometric traits. The population varia...
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