What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?

© 2017 The Author(s). The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand. A total of 58 parameters from the skull and...

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Main Authors: Korakot Nganvongpanit, Kittisak Buddhachat, Patcharaporn Kaewmong, Phaothep Cherdsukjai, Kongkiat Kittiwatanawong
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/47029
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-470292018-04-25T07:35:19Z What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length? Korakot Nganvongpanit Kittisak Buddhachat Patcharaporn Kaewmong Phaothep Cherdsukjai Kongkiat Kittiwatanawong Agricultural and Biological Sciences Arts and Humanities © 2017 The Author(s). The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand. A total of 58 parameters from the skull and scapula (25 from the cranium, 23 from the mandible and 10 from the scapula) as well as tusks were used in this study. Data were analyzed by univariate analysis, followed by discriminant analysis and multivariate linear regression. Here we show, 100% and 98.5% accuracy rates for sexing using large tusks and the skull, respectively. Scapular morphology using the caudal border tubercle and coracoid process showed 91.30% and 96.15% accuracy rates for identifying males and females. Skull morphometrics could categorize dugong habitat, i.e. living in the Andaman Sea or Gulf of Thailand, with 100% accuracy. Moreover, our model could be used to estimate body length with coefficient of determination (R 2) of 0.985. The results of our study showed that skull morphology and morphometric measurements could be used as a tool for sex identification, location identification and estimation of body length. But scapular morphology is the best tool for sex identification in dugongs. 2018-04-25T07:13:28Z 2018-04-25T07:13:28Z 2017-12-01 Journal 20452322 2-s2.0-85019612727 10.1038/s41598-017-01899-7 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019612727&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/47029
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
Arts and Humanities
spellingShingle Agricultural and Biological Sciences
Arts and Humanities
Korakot Nganvongpanit
Kittisak Buddhachat
Patcharaporn Kaewmong
Phaothep Cherdsukjai
Kongkiat Kittiwatanawong
What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
description © 2017 The Author(s). The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand. A total of 58 parameters from the skull and scapula (25 from the cranium, 23 from the mandible and 10 from the scapula) as well as tusks were used in this study. Data were analyzed by univariate analysis, followed by discriminant analysis and multivariate linear regression. Here we show, 100% and 98.5% accuracy rates for sexing using large tusks and the skull, respectively. Scapular morphology using the caudal border tubercle and coracoid process showed 91.30% and 96.15% accuracy rates for identifying males and females. Skull morphometrics could categorize dugong habitat, i.e. living in the Andaman Sea or Gulf of Thailand, with 100% accuracy. Moreover, our model could be used to estimate body length with coefficient of determination (R 2) of 0.985. The results of our study showed that skull morphology and morphometric measurements could be used as a tool for sex identification, location identification and estimation of body length. But scapular morphology is the best tool for sex identification in dugongs.
format Journal
author Korakot Nganvongpanit
Kittisak Buddhachat
Patcharaporn Kaewmong
Phaothep Cherdsukjai
Kongkiat Kittiwatanawong
author_facet Korakot Nganvongpanit
Kittisak Buddhachat
Patcharaporn Kaewmong
Phaothep Cherdsukjai
Kongkiat Kittiwatanawong
author_sort Korakot Nganvongpanit
title What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
title_short What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
title_full What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
title_fullStr What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
title_full_unstemmed What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: Sex, habitat and body length?
title_sort what the skull and scapular morphology of the dugong (dugong dugon) can tell us: sex, habitat and body length?
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019612727&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/47029
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