• Title/Summary/Keyword: morphometric analysis

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Changes of Morphometric Traits in the Cultured Cyprinid Loach (Misgurnus anguillicaudatus) to Starvation

  • Hur, Jun Wook;Gil, Hyun Woo;Park, In-Seok
    • Ecology and Resilient Infrastructure
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    • v.5 no.4
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    • pp.264-275
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    • 2018
  • The experiment was conducted to investigate the effects of various dietary conditions on external morphometric traits, and sectioned morphometric traits in the cultured cyprinid loach, (Misgurnus anguillicaudatus) for 28 days. For the fed group there was an increase in body weight, standard length, and morphometric dimensions of the head and body cavity regions compared with the starved and initial groups. Sectioned morphometric trait analysis revealed that relative to the starved group, the fed group had greater body circumference, cross-sectional area, and total height (P<0.05). Our results provide data on external and sectioned morphometric changes under starvation conditions, and can be used as a guide to assist in the regulation and scheduling of feeding, and as indices of the nutritional status of cyprinid loach.

Taxonomic review and morphometric analysis of the genus $Melanaphis$ van der Goot (Hemiptera: Aphididae) in Korea

  • Kim, Hyo-Joong;Jang, Yi-Kweon
    • Animal cells and systems
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    • v.16 no.1
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    • pp.34-40
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    • 2012
  • Seven species of the genus $Melanaphis$ van der Goot are recognized in Korea, including $M.$ $sorini$ Halbert and Remaudi$\grave{e}$re new to Korea. Morphometric analysis is performed based on 27 major characteristics to determine the morphometric correlation between species and to suggest useful diagnostic characters in this species complex. We provide the identification key based on the results of the morphometric analysis.

Medical Image Processing System for Morphometric and Functional Analysis of a Human Brain (인간 뇌의 형태적 및 기능적 분석을 위한 의료영상 처리시스템)

  • Kim, Tae-U
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.3
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    • pp.977-991
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    • 2000
  • In this paper, a medical image processing system was designed and implemented for morphometric and functional analysis of a human brain. The system is composed of image registration, ROI(region of interest) analysis, functional analysis, image visualization, 3D medical image database management system(DBMS), and database. The software processes an anatomical and functional image as input data, and provides visual and quantitative results. Input data and intermediate or final output data are stored to the database as several data types by the DBMS for other further image processing. In the experiment, the ROI analysis, for a normal, a tumor, a Parkinson's decease, and a depression case, showed that the system is useful for morphometric and functional analysis of a human brain.

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Morphometric Analysis of Wing Variation of Lantern Fly, Lycorma delicatula from Northeast Asia (동북아시아 꽃매미 날개 변이의 형태계측학 분석)

  • Kim, Hyojoong
    • Korean journal of applied entomology
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    • v.52 no.4
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    • pp.265-271
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    • 2013
  • Morphometric analysis of Lycorma delicatula was performed to confirm whether local individuals had a geographical difference in their wing variations. The L. delicatula individuals were collected from 10 localities in Korea, China, and Japan, and 14 morphometric characteristics selected from the forewing were analyzed. The Korean individuals were similar to the ones from the northern area of the Yangtze River, but less similar to the others from the southern area of the Yangtze River. The individuals from Seoul and Buan were very similar to those from Shanghai. In case of wing spots, the individuals from Beijing had relatively small spots, while the ones from Linan had big spots. The Japanese individuals had a relatively large wing size.

Mitochondrial sequence based characterization and morphometric assessment of Diara buffalo population

  • Singh, Karan Veer;Purohit, Hitesh;Singh, Ramesh Kumar
    • Animal Bioscience
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    • v.35 no.7
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    • pp.949-954
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    • 2022
  • Objective: The present study is aimed at phenotypic characterization and mitochondrial d-loop analysis of indigenous "Diara" buffalo population, which are mostly confined to the villages on the South and North Gangetic marshy plains in the Bihar state of India. These buffaloes are well adapted and are best suited for ploughing and puddling the wet fields meant for paddy cultivation. Methods: Biometric data on 172 buffaloes were collected using a standard flexible tape measure. Animals are medium in size; the typical morphometric features are long head with a broad forehead and moderately long and erect ears. Genomic DNA was isolated from unrelated animals. The mtDNA d-loop 358-bp sequence data was generated and compared with 338 sequences belonging to riverine and swamp buffaloes. Results: Based on the mitochondrial d-loop analysis the Diara buffaloes were grouped along with the haplotypes reported for riverine buffalo. Sequence analysis revealed the presence of 7 mitochondrial D loop haplotypes with haplotype diversity of 0.9643. Five of the haplotypes were shared with established swamp breeds and with Buffalo population of Orissa in India. Conclusion: Morphometric analyses clearly shows distinguishing features like long and broad forehead which may be useful in identification. The germplasm of Diara buffalo is much adapted to the marshy banks of river Ganga and its tributaries. It constitutes a valuable genetic resource which needs to be conserved on priority basis.

Landmark-based Morphometric and Meristic Analysis of Serranidae

  • Lim, Sang Gu;Jeong, Min Hwan;Kim, Bong Seok;Lee, Tae Ho;Gil, Hyun Woo;Park, In-Seok
    • Development and Reproduction
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    • v.20 no.2
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    • pp.51-63
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    • 2016
  • The landmark-based morphometric and meristic analysis of the kelp grouper (Epinephelus bruneus), red spotted grouper (E. akaara) and seven-banded grouper (E. septemfasciatus) were performed to compare the differentiation of overall body shape and structure. The measurements of the morphometric dimensions were observed in 25 parts (truss dimension: 16 parts; head part dimension: 9 parts) of 38 morphometric dimensions and also meristic differences observed in 3 parts (dorsal fin, anal fin and caudal fin) of 6 meristic counts (P < 0.05). Observed morphometric characteristics primarily involved in truss and head part dimension, kelp grouper have larger values in caudal part of truss dimension, kelp grouper, red spotted grouper and seven-banded grouper have similar values in pectoral part of truss dimension, in addition to, results of head part dimension showed that red spotted grouper have smaller values in overall dimensions (P < 0.05). As meristic characteristics, kelp grouper have more number of anal fin rays than other fish, red spotted grouper have more number of dorsal soft rays than other fish, and seven spotted grouper have more number of anal soft rays, and caudal fin rays than other fish (P < 0.05). Photographed under the x-ray, kelp grouper have the most curved vertebral column and largest swim bladder than other fishes (P < 0.05). Our results of this study confirmed that 3 subfamily fishes adequately can distinguish with external body shape, and we hope that the results of our study could be used to identify in Serranidae family as taxonomical parameters.

Morphometric Characteristics and Correlation Analysis with Rainfall-runoff in the Han River Basin (한강 유역의 형태학적 특성과 강우-유출의 상관분석)

  • Lee, Ji Haeng;Lee, Woong Hee;Choi, Heung Sik
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.38 no.2
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    • pp.237-247
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    • 2018
  • The basin characteristics reflect the attributes of geomorphological pattern of basin and stream networks affect the rainfall-runoff. In order to analyze the relationship between the basin runoff and stream morphometric characteristics, the morphometric characteristics were investigated for 27 water-level observation stations on 19 rivers in the Han River basin using Arc-map. The morphometric characteristics were divided into linear, areal and relief aspects for calculation while the annual mean runoff ratio as a basin response by rainfall was estimated using the measured precipitation and discharge to analyze the rainfall-runoff characteristics. The correlation among the morphometric parameters were schematized to analyze the correlations among them. The multiple regression equation for rainfall-runoff ratio was provided with morphometric parameters of stream length ratio, form factor ratio, shape factor, stream area ratio, and relief ratio and the coefficient of determination was 0.691. The RMSE and MAPE between the measured and the estimated annual runoff rates were found as 0.09, 11.61% respectively, the suggested regression equation showed good estimation.

Effects of Starvation in Rock Bream, Oplegnathus fasciatus and Olive Flounder, Paralichthys olivaceus

  • Park, In-Seok;Gil, Hyun Woo;Yoo, Gwang Yeol;Oh, Ji Su
    • Development and Reproduction
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    • v.19 no.2
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    • pp.97-109
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    • 2015
  • We assessed the effects of various dietary conditions on the growth, phenotypic traits, and morphometric dimensions of rock bream, Oplegnathus fasciatus and on the morphometric dimensions of sectioned olive flounder, Paralichthys olivaceus. Rock bream in the fed group increased in body weight, standard length, and condition factor, but these parameters decreased significantly for fish in the starved group (P < 0.05). The head connection dimensions of fish in the fed group decreased, while for starved fish there was increase in external morphometric dimensions (P < 0.05). In both species, sectioned morphometric analysis revealed that fish in the fed group had a larger body circumference and cross-cut sectional area, and greater cross-cut section height, relative to the starved group (P < 0.05).

Morphometric analysis of the Daphne kiusiana complex (Thymelaeaceae) using digitized herbarium specimens

  • KIM, Yoon-Su;OH, Sang-Hun
    • Korean Journal of Plant Taxonomy
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    • v.52 no.3
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    • pp.144-155
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    • 2022
  • Daphne kiusiana is an evergreen shrub with dense head-like umbels of white flowers distributed in southern Korea, Japan, China, and Taiwan. Plants in China and Taiwan are recognized as var. atrocaulis by having a dark purple stem, elliptic leaves, and persistent bracts. Recently, plants on Jejudo Island were segregated as a separate species, D. jejudoensis, given their elliptic leaves with an acuminate apex, a long hypanthium and sepals, and a glabrous hypanthium. Morphological variations of three closely related taxa, the D. kiusiana complex, were investigated across the distributional range to clarify the taxonomic delimitation of members of the complex. Twelve characters of the leaf and flower were measured from digitized herbarium specimens using the image analysis program ImageJ and were included in a morphometric analysis, the results of which indicate that the level of variation in the characters is very high. The results of a principal component analysis weakly separated D. jejudoensis from D. kiusiana according to their floral characteristics, such as a longer, glabrous hypanthium, and larger sepals. However, some individuals of D. kiusiana, particularly those from Bigeumdo Island, were included in D. jejudoensis. Recognition of D. kiusiana var. atrocaulis based on the leaf shape was not supported in the analysis, and D. jejudoensis may be recognized as a variety of D. kiusiana. Our morphometric analysis shows that digitized images of herbarium specimens could be useful and an additional method by which to investigate more diverse specimens.

Systematic Study of the Mesochorinae(Hymenoptera: Ichneumonidae) from the Eastern Palearctic Region III. - Morphometric Analysis of Astiphromma jezoense Uchida - (동구북구산 Mesochorinae 아과 (벌목:맵시벌과)의 계통분류학적 연구 III. -Astiphromma jezoense Uchida의 계량형능학적분석)

  • 이종욱;서경인;차진열
    • Korean journal of applied entomology
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    • v.35 no.2
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    • pp.104-113
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    • 1996
  • In order to clarify the interspecific variation of Astiphrom jezoense, a morphometric analysis was performed for seven populations using PCA (principle component analysis) and discriminant analysis. As a result of PCA, 25 quantitative characters are grouped into four factors. The characteristics on legs are especially important components both in male and in female. Morphometric analysis indicate that considerable morphological gap is correlated with geographical habitat. Important discriminant characters are MOD (maximum ocellar distance), Fn (first tergite length) in female and MSL (malar space length) in male.

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