Morphometric Analysis of Bats (Chiroptera) in the Campus Area of the University of Bengkulu, Using Principal Component Analysis

AbstractFor a long time it has been discussed as to whether Melanelixia fuliginosa comprises one or two species: one darker, mainly saxicolous, and one lighter, mainly corticolous. To settle the question, a morphometric and a molecular analysis were carried out and analyzed using a principal component analysis (PCA). The morphometric analysis indicates a differentiation in several characters between material previously recognized as subspecies fuliginosa and glabratula, but also a considerable overlap in some of them. The molecular analysis of the nrITS DNA gene reveals a clear division of the taxa. Specimens belonging to Melanelia fuliginosa fall out in two different clades, which have good bootstrap support, corresponding to the subspecies fuliginosa and glabratula. Accordingly, we propose that the subspecies should be acknowledged as separate species, Melanelixia fuliginosa (Fr. ex Duby) O. Blanco et al. and Melanelixia glabratula (Lamy) Sandler & Arup.

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Life cycle and morphometric analysis of nymphs of Cynodonmiris corpoicanus Ferreira & Barreto, 2013 (Hemiptera: Miridae)

REVISTA CHILENA DE ENTOMOLOGÍA ◽

10.35249/rche.47.4.21.04 ◽

2021 ◽

Vol 47 (4) ◽

pp. 677-688

Author(s):

Paulo Sergio F. Ferreira ◽

Nancy Barreto-Triana ◽

Pablo Andrés Osorio-Mejía ◽

Fagner de Souza ◽

Luciano Santana Fiuza Ferreira

Keyword(s):

Principal Component Analysis ◽

Life Cycle ◽

Morphometric Analysis ◽

Avena Sativa ◽

Principal Component ◽

Component Analysis ◽

Morphometric Study ◽

Diagnostic Characters ◽

High Plateau

The bug Cynodonmiris corpoicanus inhabit the Cundiboyacense High Plateau in Colombia feeding on grasses (Poaceae). The authors carry out their life cycle in greenhouse and characterize the damage on oat (Avena sativa) leaves. The duration egg – adult last 49.3 days and undergo five nymphal stages. The morphometric study was conducted by principal component analysis (PCA) and 2.03 PAST software. This method let to determine measures for nymphal stages separation, furthermore we consider coloration, morphology and morphometric description. A key for nymphal stages determination was developed by morphometric and morphology diagnostic characters. Also, we include illustrations of the C. corpoicanus nymphal stages.

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Flood Prioritization of Basins based on Geomorphometric properties using Principal Component Analysis, Morphometric Analysis and Redvan’s Priority Methods: A Case Study of Harşit River Basin

Journal of Hydrology ◽

10.1016/j.jhydrol.2021.127061 ◽

2021 ◽

pp. 127061

Author(s):

Redvan Ghasemlounia ◽

Mustafa Utlu

Keyword(s):

Principal Component Analysis ◽

River Basin ◽

Morphometric Analysis ◽

Principal Component ◽

Component Analysis

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A German version of the Intermittent Claudication Questionnaire (ICQ): cultural adaptation and validation

VASA ◽

10.1024/0301-1526/a000218 ◽

2012 ◽

Vol 41 (5) ◽

pp. 333-342 ◽

Cited By ~ 3

Author(s):

Kirchberger ◽

Finger ◽

Müller-Bühl

Keyword(s):

Principal Component Analysis ◽

Intermittent Claudication ◽

Completion Time ◽

Short Form ◽

Principal Component ◽

Component Analysis ◽

German Version ◽

Average Completion Time ◽

Sf 36 ◽

Related Quality

Background: The Intermittent Claudication Questionnaire (ICQ) is a short questionnaire for the assessment of health-related quality of life (HRQOL) in patients with intermittent claudication (IC). The objective of this study was to translate the ICQ into German and to investigate the psychometric properties of the German ICQ version in patients with IC. Patients and methods: The original English version was translated using a forward-backward method. The resulting German version was reviewed by the author of the original version and an experienced clinician. Finally, it was tested for clarity with 5 German patients with IC. A sample of 81 patients were administered the German ICQ. The sample consisted of 58.0 % male patients with a median age of 71 years and a median IC duration of 36 months. Test of feasibility included completeness of questionnaires, completion time, and ratings of clarity, length and relevance. Reliability was assessed through a retest in 13 patients at 14 days, and analysis of Cronbachs alpha for internal consistency. Construct validity was investigated using principal component analysis. Concurrent validity was assessed by correlating the ICQ scores with the Short Form 36 Health Survey (SF-36) as well as clinical measures. Results: The ICQ was completely filled in by 73 subjects (90.1 %) with an average completion time of 6.3 minutes. Cronbachs alpha coefficient reached 0.75. Intra-class correlation for test-retest reliability was r = 0.88. Principal component analysis resulted in a 3 factor solution. The first factor explained 51.5 of the total variation and all items had loadings of at least 0.65 on it. The ICQ was significantly associated with the SF-36 and treadmill-walking distances whereas no association was found for resting ABPI. Conclusions: The German version of the ICQ demonstrated good feasibility, satisfactory reliability and good validity. Responsiveness should be investigated in further validation studies.

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