Sexual dimorphism in digital dermatoglyphic traits among Sinhalese people in Sri Lanka

Journal of Physiological Anthropology

Ajith S Jayasena⁶  Prasanna L Abhayarathna³  Subashini Amarasinghe¹  Shamila C Adikari²  Geetha K Rathnayake⁴  Buddhika TB Wijerathne⁵ 

[1] Teaching Hospital Kandy, Kandy, Sri Lanka;Rehabilitation Hospital Digana, Digana, Sri Lanka;General Hospital Trincomale, Trincomale, Sri Lanka;Teaching Hospital Anuradhapura, Anuradhapura, Sri Lanka;Department of Forensic Medicine, Faculty of Medicine and Allied sciences, Rajarata University of Sri Lanka, Saliyapura, Anuradhapura, Sri Lanka;General Hospital Matale, Matale, Sri Lanka

关键词: Sri Lanka;    Sinhalese;    Anthropology;    Sexual dimorphism;    Dermatoglyphic pattern indices;    Digital dermatoglyphic traits;   

Others  :  861519
DOI  :  10.1186/1880-6805-32-27

 received in 2013-04-04, accepted in 2013-12-13,  发布年份 2013

【 摘 要 】

Background

The purpose of this study was to evaluate gender-wise diversity of digital dermatoglyphic traits in a sample of Sinhalese people in Sri Lanka.

Findings

Four thousand and thirty-four digital prints of 434 Sinhalese individuals (217 males and 217 females) were examined for their digital dermatoglyphic pattern distribution. The mean age for the entire group was 23.66 years (standard deviation = 4.93 years). The loop pattern is observed more frequently (n = 2,592, 59.72%) compared to whorl (n = 1,542, 35.53%) and arch (n = 206, 4.75%) in the Sinhalese population. Females (n = 1,274, 58.71%) have a more ulnar loop pattern than males (n = 1,231, 56.73%). The plain whorl pattern is observed more frequently in males (n = 560, 25.81%) compared to females (n = 514, 23.69%).The double loop pattern is observed more frequently on the right and left thumb (digit 1) of both males and females. Pattern intensity index, Dankmeijer index and Furuhata index are higher in males.

Conclusions

Ulnar loop is the most frequently occurring digital dermatoglyphic pattern among the Sinhalese. All pattern indices are higher in males. To some extent, dermatoglyphic patterns of Sinhalese are similar to North Indians and other Caucasoid populations. Further studies with larger sample sizes are recommended to confirm our findings.

【 授权许可】

   
2013 Wijerathne et al.; licensee BioMed Central Ltd.

【 图 表 】

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