نتایج جستجو برای: morphometric traits

تعداد نتایج: 116605  

2016
Jean Claude Rakotonirina Sándor Csősz Brian L. Fisher

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...

2017
Simon Dellicour Maxence Gerard Jérôme G. Prunier Alexandre Dewulf Michael Kuhlmann Denis Michez

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...

Journal: : 2022

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

2007
Joan T. Richtsmeier Ethylin W. Jabs Ying L. Wang Alex Kane Jeffrey Marsh Kristina Aldridge Ryan C. Ridgely

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...

2015
Manvender Singh

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...

2013
Dinesh Kumar Yadav Anand Jain Viswanath Sheshagirirao Kulkarni Mandera Giriyappa Govindaiah Thimmappa Aswathnarayan Devinder Kumar Sadana

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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