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Vitamin D status and its associated factors of free living Malay adults in a tropical country, Malaysia

Moy FM

J. Photochem. Photobiol. B, Biol., 2011 Sep 02;104(3):444-8.
PMID: 21636288 DOI: 10.1016/j.jphotobiol.2011.05.002

Vitamin D status is influenced by sun exposure, geographic latitude, daily outdoor activities, body surface exposed to sunlight and dietary intakes. Malaysia, is sunny all year round. However, the vitamin D status of this population especially among the healthy and free living adults is not known. Therefore a study of vitamin D status and associated factors was initiated among an existing Malay cohort in Kuala Lumpur. A total of 380 subjects were sampled to have their vitamin D status assessed using 25-hydroxyvitamin D (25(OH)D). A short questionnaire enquiring socio-demographic characteristics, exposure to sunlight and clothing style was administered. Their mean age was 48.5±5.2years and the mean 25(OH)D for males and females were 56.2±18.9nmol/L and 36.2±13.4nmol/L respectively. There were significant positive correlation for sun exposure score (r=0.27, p<0.001) and negative correlation for sun protection score (r=-0.41, p<0.001) with 25(OH)D levels. In the logistic regression model, females (OR=2.93; 95% CI: 1.17, 7.31), BMI (1.1; 1.03, 1.20) and sun exposure score (0.998; 0.996, 0.999) were significantly associated with vitamin D status as represented by 25(OH)D levels. Our findings show that obesity, lifestyle behaviours and clothing style are directly associated with our participants especially females' low vitamin D status.

Matched MeSH terms: Demography
Violent crime datasets: Incidence and patterns in Malaysia from 2006 to 2017

Hakim HM, Khan HO, Hamzah HH, Othman MF, Nelson BR, Chambers GK, et al.

Data Brief, 2019 Oct;26:104449.
PMID: 31667222 DOI: 10.1016/j.dib.2019.104449

This article provides violent crime data in Malaysia from 2006 to 2017. The violent crimes include murder, rape, gang robbery, robbery and voluntarily causing hurt cases. A total of 330,395 violent crime cases were reported in this 12 year period and the data were tabulated state by state for all thirteen states of Malaysia, including two states in Borneo (Sabah and Sarawak) and one federal territory (Kuala Lumpur). In general, violent crimes show a decreasing trend from 2006 to 2017 in Malaysia. However, armed gang robbery and armed robbery show a fluctuating pattern from 2008 to 2011. A similar pattern was also recorded for unarmed gang robbery from 2008 to 2010. The violent crime data deposited here are available for further analysis, e.g., for identifying risk factors such as demography, lifestyle, socio-economic status, government policies etc. which may be associated with violent crime incidence and pattern across the country.

Matched MeSH terms: Demography
Fulltext Verbal working memory in schizophrenia: relationship to cigarette smoking and psychopathology

Hazura, H., Wan Norhaida, W.A., Zahiruddin, O., Ruzita, J.

Malaysian Journal of Psychiatry, 2012;21(1):0-0.
MyJurnal

Introduction: A number of researches suggest smoking serves as a form of self-medication to reduce the side effects of antipsychotic medications, to alleviate negative symptoms, and/or to ameliorate a number of cognitive deficits associated with schizophrenia. Objective: The aim of this study was to investigate the association of cigarette smoking with verbal working memory and psychopathology of patients with schizophrenia. Methods: Fifty-three patients with schizophrenia were assessed by a single rater using the Malay Version of Auditory Verbal Learning Test (MVAVLT) and Positive and Negative Syndrome Scale (PANSS). Smokers (n=30) were compared with nonsmokers (n=23) on socio-demographic, clinical, psychopathology and verbal memory variables. Single linear and multiple regression analysis were performed to determine factors associated with verbal memory performance.
Results: Verbal working memory performance is associated with lower number of admission to ward, lesser severity of the negative symptoms or general psychopathology of schizophrenia and use of atypical antipsychotics in all schizophrenic subjects. Smokers with schizophrenia scored higher than non- smoker in measures that reflect immediate memory, delayed recall and recognition memory. However, the association between verbal working
memory performance and smoking status was found to be not significant. Conclusion: Verbal working memory performance is associated with negative symptoms but not positive symptoms. This study failed to detect association of smoking on verbal working memory.

Matched MeSH terms: Demography
Fulltext Verbal memory test performance in patients with bipolar I disorder attending a psychiatric clinic of a university hospital in Kuala Lumpur, Malaysia.

Abdul Hamid Abdul Rahman, Shamsul Azhar Shah, Normala Ibrahim

ASEAN Journal of Psychiatry, 2009;10(2):157-168.
MyJurnal

Objective: The study aims to determine pattern of verbal memory and learning impairment and its associated factors among patients with bipolar I disorder in a psychiatric clinic of a university hospital. Methods: A case control study comparing verbal memory test
performance in 40 patients with bipolar I disorder to that of 40 healthy normal subjects using Rey Auditory Verbal Learning Test (RAVLT). The association between demographic, clinical
characteristics and poor verbal memory performance were examined. Results: Up to 92% of patients with bipolar I disorder have impaired short term working memory in this hospital-based study. They also recalled fewer words in all the RAVLT trials and had difficulties
learning the word list in comparison to that of normal healthy individuals. Verbal memory and learning impairment are observed in bipolar illness in the absence of active mood symptoms while duration and severity of illness are not found to have any effect on verbal memory and learning. Conclusion: There is consistent verbal memory and learning problems in individuals with bipolar I disorder and their presence in the absence of mania, depression and mixed symptoms during the course of the illness suggests a trait related deficit.

Study site: Psychiatric Clinic, Pusat Perubatan Universiti Kebangsaan Malaysia (PPUKM)

Matched MeSH terms: Demography
Fulltext Validity and reliability of the Bahasa Melayu version of the Migraine Disability Assessment questionnaire

Shaik MM, Hassan NB, Tan HL, Bhaskar S, Gan SH

Biomed Res Int, 2014;2014:435856.
PMID: 25121099 DOI: 10.1155/2014/435856

BACKGROUND: The study was designed to determine the validity and reliability of the Bahasa Melayu version (MIDAS-M) of the Migraine Disability Assessment (MIDAS) questionnaire.
METHODS: Patients having migraine for more than six months attending the Neurology Clinic, Hospital Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia, were recruited. Standard forward and back translation procedures were used to translate and adapt the MIDAS questionnaire to produce the Bahasa Melayu version. The translated Malay version was tested for face and content validity. Validity and reliability testing were further conducted with 100 migraine patients (1st administration) followed by a retesting session 21 days later (2nd administration).
RESULTS: A total of 100 patients between 15 and 60 years of age were recruited. The majority of the patients were single (66%) and students (46%). Cronbach's alpha values were 0.84 (1st administration) and 0.80 (2nd administration). The test-retest reliability for the total MIDAS score was 0.73, indicating that the MIDAS-M questionnaire is stable; for the five disability questions, the test-retest values ranged from 0.77 to 0.87.
CONCLUSION: The MIDAS-M questionnaire is comparable with the original English version in terms of validity and reliability and may be used for the assessment of migraine in clinical settings.

Matched MeSH terms: Demography
Fulltext Validity and reliability of an adapted questionnaire measuring knowledge, awareness and practice regarding familial hypercholesterolaemia among primary care physicians in Malaysia

Azraii AB, Ramli AS, Ismail Z, Abdul-Razak S, Badlishah-Sham SF, Mohd-Kasim NA, et al.

BMC Cardiovasc Disord, 2021 01 19;21(1):39.
PMID: 33468051 DOI: 10.1186/s12872-020-01845-y

BACKGROUND: Primary care physicians (PCP) play an important role in detecting Familial Hypercholesterolaemia (FH) early. However, knowledge, awareness and practice (KAP) regarding FH among Malaysian PCP are not well established, and there was no validated tool to assess their FH KAP. Thus, the aim of this study was to adapt an FH KAP questionnaire and determine its validity and reliability among Malaysian PCP.
METHODS: This cross-sectional validation study involved Malaysian PCP with ≥ 1-year work experience in the primary care settings. In Phase 1, the original 19-item FH KAP questionnaire underwent content validation and adaptation by 7 experts. The questionnaire was then converted into an online survey instrument and was face validated by 10 PCP. In Phase 2, the adapted questionnaire was disseminated through e-mail to 1500 PCP. Data were collected on their KAP, demography, qualification and work experience. The construct validity was tested using known-groups validation method. The hypothesis was PCP holding postgraduate qualification (PCP-PG-Qual) would have better FH KAP compared with PCP without postgraduate qualification (PCP-noPG-Qual). Internal consistency reliability was calculated using Kuder Richardson formula-20 (KR-20) and test-retest reliability was tested on 26 PCP using kappa statistics.
RESULTS: During content validation and adaptation, 10 items remained unchanged, 8 items were modified, 1 item was moved to demography and 7 items were added. The adapted questionnaire consisted of 25 items (11 knowledge, 5 awareness and 9 practice items). A total of 130 out of 1500 PCP (response rate: 8.7%) completed the questionnaire. The mean percentage knowledge score was found to be significantly higher in PCP-PG-Qual compared with PCP-noPG-Qual (53.5, SD ± 13.9 vs. 35.9, SD ± 11.79), t(128) = 6.90, p

Matched MeSH terms: Demography
Validation of the Brief Ageing Perceptions Questionnaire (B-APQ) in Malaysia

Jaafar MH, Villiers-Tuthill A, Sim SH, Lim MA, Morgan K

Aging Ment Health, 2020 04;24(4):620-626.
PMID: 30596467 DOI: 10.1080/13607863.2018.1550631

Objectives: The Brief Ageing Perceptions Questionnaire (B-APQ) has five domains that explore views about own ageing. The aim of this study was to validate the B-APQ for use among older adults in Malaysia and to explore socio-demographic variations in ageing self-perceptions.Method: Older adults aged 50 years and above were randomly selected to complete a set of questionnaires. Cronbach's α was used to measure internal consistency, while corrected item-total correlations and correlation with DASS-21 and the CASP-19 scores were employed to assess convergent and discriminant validity. Confirmatory Factor Analysis (CFA) was conducted to confirm the factorial structure of the B-APQ. Difference in self-perceptions of ageing across socio-demographic variables was assessed.Results: Internal consistency for each of the domains was good. Item-total correlations within each domain were strong (>0.6) or very strong (>0.8). Convergent and discriminant validity were supported by significant correlations with DASS-21 depression and CASP-19 scores. CFA results indicated good model fit with the original B-APQ model. Presence of chronic illness also has a significant impact on B-APQ domain scores.Conclusion: The B-APQ is a valid and reliable instrument which can be used to assess self-perceptions of ageing among older Malaysian adults.

Matched MeSH terms: Demography
Validation of Malaysian sugar craving assessment tool (myscat) among type II diabetic patients

Mays Jamal Ali, Nik Mazlan Mamat, Wan Fathin Fariza Bt. Wan Mahmood, Aryati Binti Ahmad, Shaheeda Binti Razali

International Journal of Allied Health Sciences, 2019;3(2):625-633.
MyJurnal

The purpose of this study is to validate Sugar Craving Assessment Tool (MySCAT) among type II diabetes mellitus patients. A total of 168 respondents were recruited to participate in this cross sectional study. It was conducted in out-patient health clinics in Kuala Terengganu and Kuantan. Patients’ sugar craving and dietary behavior were measures using structured questionnaires which were MySCAT, three-day dietary recall and demographic data. The interview sessions were conducted by a dietician. MySCAT internal consistency test had a Cronbach’s alpha value of 0.75 and showed a significant correlation (r=0.56, p < 0.001) with actual sugar intake collected via three days diet recall. ROC analysis reported a cut-off point for MySCAT as 16.5; the sensitivity value of 0.83 and 1-specificity of 0.38. 62% of respondents were categorized as cravers and 38% as non-cravers. Male and female repondents had no significant differences in craving status. The mean intake of sugar was 46 g/day (SD= 2.26), respondents had a relatively high intake of sugar in comparison to their recommendation. This study found that MySCAT provides an easy efficient tool which is sensitive enough to identify those with sugar craving problem. It also provides an overview of patients’ dietary intake and points out their problem with dietary intake compliance. We suggest MySCAT as an important tool that can assist dietitians in their consultation session.

Matched MeSH terms: Demography
Fulltext Validation of ICD 10 on congenital anomalies in the state of Penang

Anthony, Leela, Ambu, Stephen, Lokman Hakim, Lee, Nagarajah

International e-Journal of Science, Medicine & Education, 2011;5(2):12-17.
MyJurnal

Background: Database on hospital records like discharge data, birth and death certificates are widely used for epidemiological and research studies. However there are a very few validation studies on these data. The aim of this study was to validate and assess the accuracy of the ICD 10 database on congenital anomalies in the state of Penang. This study was carried out for three years, from 2002 to 2004.

Methods: The list of cases coded under the general coding “Q” was extracted and approximately 30% of cases were randomly selected from the list. Medical records for the selected cases were checked and discrepancies for the diagnoses between the medical records and the ICD 10 data base were recorded for three years. Verification was done for basic demographic variables and the coding of the diseases. Discrepancies, sensitivity and specificity were calculated.

Results: The ICD 10 database for congenital anomalies are classified into two types: Type 1 and Type 2. Discrepancies on demographic information were found among the age of patients (babies with congenital anomalies). In Type 1, there was a discrepancy of about 0.02 % to 0.05% probability that a congenital anomaly case can be recorded as non congenital anomaly in the ICD 10. In Type 2 there was a discrepancy that a non-congenital anomaly was classified as congenital anomaly and this ranged from 26.7% to 50.0%. The sensitivity ranged from 96.85% to 97.98%, thus it can be concluded the ICD 10 database is highly sensitive while the specificity ranged from 50.00% to 78.57 %. In other words the ICD 10 is not accurate when classifying the non- congenital anomaly cases. A fair percentage of non-congenital anomaly cases were classified as CA in the ICD 10 database.

Conclusion: Even though hospital databases are used as a baseline data for a number of research and epidemiological studies it cannot be used at face value. Validation of these data is necessary before any conclusions can be drawn or intervention measures are undertaken.

Matched MeSH terms: Demography
Using the OHP to reach young people. IEC workshop

JOICFP News, 1997 Jan.
PMID: 12292050
Matched MeSH terms: Demography
Use of first- and second-generation antipsychotic medications in older patients with schizophrenia in Asia (2001-2009)

Xiang YT, Kreyenbuhl J, Dickerson FB, Ungvari GS, Wang CY, Si TM, et al.

Aust N Z J Psychiatry, 2012 Dec;46(12):1159-64.
PMID: 22790175 DOI: 10.1177/0004867412453625

This study examined the prescribing patterns of several first- (FGAs) and second-generation antipsychotic (SGAs) medications administered to older Asian patients with schizophrenia during the period between 2001 and 2009.

Matched MeSH terms: Demography
Urbanization of the Malays since independence: evidence from West Malaysia, 1957 and 1970

Rimmer PJ, Cho GC

J Southeast Asian Stud, 1981 Sep;12(2):349-63.
PMID: 12312310
Matched MeSH terms: Demography
Urbanization and low-income housing in Malaysia: impact on the urban Malays

Agus MR

Warasan Prachakon Lae Sangkhom, 1990 Jan;2(2):205-21, 242-3.
PMID: 12283536

The focus of this study is on urbanization in Malaysia. "This paper is divided into three parts. The first part examines the trend of uneven urban development in West Malaysia. The second part discusses the change [in] ethnic composition of urban population between 1970 and 1980 intercensal period. The third part analyses the impact of the urbanization process on the Malays in the context of housing problems of the lower income groups." (SUMMARY IN THA)

Matched MeSH terms: Demography
Urban squatting and migration in Peninsular Malaysia

Johnstone M

Int Migr Rev, 1983;17(2):291-322.
PMID: 12339134

"This article examines some of the links between the phenomena of urban migration and squatter settlements in the Third World city. This will be done by demonstrating that both are outcomes of fundamental social and political forces that have operated on these societies. Migration and squatting are placed in a context of the historical processes that led to the uneven development of Malaysia. The article offers some explanation for the origin of the inequalities observed in spatial structures--in this case urban housing--by focusing on one of the contributory factors, namely migration."

Matched MeSH terms: Demography
Fulltext Uptake of Recommended Vaccines and Its Associated Factors Among Malaysian Pilgrims During Hajj and Umrah 2018

Goni MD, Naing NN, Hasan H, Wan-Arfah N, Deris ZZ, Arifin WN, et al.

Front Public Health, 2019;7:268.
PMID: 31620419 DOI: 10.3389/fpubh.2019.00268

This study aimed to assess the uptake of recommended vaccines and to identify the factors associated with the vaccines' uptake among Malaysian Hajj and Umrah pilgrims. A cross-sectional survey among Malaysian Hajj and Umrah pilgrims in 2018. The uptake of the recommended vaccines was surveyed through an anonymous self-administered questionnaire to pilgrims attending a pre-departure Hajj/Umrah orientation course. Descriptive statistics were used for elaborating the demographic characteristics and vaccines uptake of the respondents. Multiple logistic regression was used for predicting the factors associated with the vaccines' uptake. A total of 1,274 pilgrims participated in the study with a mean age (standard deviation) of 42.42 (15.6). A total of 833 (65.4%) participants were females and 232 of the participants (18.2%) had at least more than one chronic disease. The uptake of influenza and pneumococcal vaccines were 28.6% (364/1,274) and 25.4% (324/1,274), respectively. Among the 527 pilgrims who were "at increased risk" of infections, 168 (31.9%) and 184 (34.9%) received influenza and pneumococcal vaccines, respectively. Gender, marital status and occupation were the common predictors associated with vaccines uptake. The vaccination uptake among Malaysian Hajj and Umrah pilgrims is low and declining from previous years. Educating the pilgrims toward vaccine uptake is essential and exploring the barriers for vaccination.

Matched MeSH terms: Demography
Fulltext Upshot of coffee consumption on blood pressure in frequent and non-frequent drinkers among healthy population in rural and urban area of Kota Kinabalu, Sabah

Audrey Julius, Neni Widiasmoro Selamat, Siti Zulaikha Ibadillah Ismail

Journal of Management & Science, 2020;18(2):1-10.
MyJurnal

The upshot of blood pressure relies on the quantity and frequency of caffeine intake and on the rate of caffeine metabolism. This study aimed to investigate the effect of coffee consumption on blood pressure among frequent and non-frequent drinkers in rural and urban area of Kota Kinabalu. A total of 168 participants (Mean age = 26.52 ± 6.33 years; female = 50%; weight = 61.35 ± 12.52 kg; height = 163.37±7.70 cm; diploma holder = 45.2%) were recruited. Questionnaires consisting of socio-demography (5 items), caffeine intake frequency (2 items) and knowledge on coffee, blood pressure and effect to human health (10 items) were distributed. Blood pressure (BP) was taken before coffee consumption and after 30th, 60th, 90th and 120th minutes. SPSS version 24 were employed for statistical analysis. Frequent drinkers displayed significantly higher BP on the 90th (p=0.015) and 120th (p

Matched MeSH terms: Demography
Fulltext University students' knowledge, attitudes, and practice regarding antibiotic use and associated factors: a cross-sectional study in the United Arab Emirates

Jairoun A, Hassan N, Ali A, Jairoun O, Shahwan M, Hassali M

Int J Gen Med, 2019;12:235-246.
PMID: 31388309 DOI: 10.2147/IJGM.S200641

Purpose: Antibiotic resistance is one of the world's most fatal health crises. Medical students are the antibiotic prescribers of tomorrow, so better understanding of their knowledge, attitudes, and practice (KAP) pertaining to antibiotic use is crucial. Objectives: This study aimed to assess the KAP of antibiotics and associated factors among university students in the United Arab Emirates (UAE). Methods: This was a descriptive cross-sectional study conducted among a random sample of undergraduate students from Ajman University in the UAE. A self-administered pretested questionnaire was used to collect data on students' demographics and their KAP regarding antibiotic use. Data were analysed using STATA version 14.2. P<0.05 was considered statistically significant. Results: This study showed that university students have a high rate of antibiotic self-medication. The average KAP score was 56% (95% CI 55%-57%). Statistical modeling showed that major, study year, age, and sex were strong determinants of KAP regarding antibiotic use. Conclusion: There is a need to develop an effective and comprehensive antibiotic-stewardship program as part of undergraduate education. Moreover, reinforcing antibiotic-use policies, involving pharmacies, drug supply, distribution, and sale, are also urgently needed.

Matched MeSH terms: Demography
Fulltext Universiti Malaysia Sabah student nurses’ perceived readiness in caring for patients infected with Coronavirus

Segaran Ramodran, Yeap Boon Tat, Norkiah Saat, Constance Liew Sat Lin, Nur Atikah Md Taib, Symeon Mandrinos

Malaysian Journal of Medicine and Health Sciences, 2020;16(105):49-0.
MyJurnal

Introduction: Recent Coronavirus outbreak has raised concern among student nurses who are doing their clinical posting tenure regarding the risk ofpatient acquired infection. This study examined perceived readiness to pro- vide coronavirus patient careduring clinical posting among student nurses in UMS. Method: This study deployed a cross-section survey design using a self-rated questionnaire to evaluate respondents’ level of readiness towards Coronavirus patient care. A total of 177 (N) respondents comprising of nursing students from UMS (year 1 n=55, year 2 n=56, year 3 n=66) participated in the study. The study questionnaire captured demographics and comprised of 15Likert -scale items that assessed the level of perceived readiness to provide Coronavirus patient care. The ques- tionnaire was adapted from a previous SARs pandemic studyand revalidated within the local context (α = 0.78). Data analysis used descriptive statistics by frequency counts and Fisher exact test for demographic correlates with the level of readiness. Results: Among 177 student nurses in this study68% (n= 121) were willing and ready to provide Coronavirus patient care and 32% (n = 56) were hesitant or not willing. Regarding confidence of safety using PPE to provide patient care, 34 % (n = 61) of respondents rated not confident and deemed it hazardous even with full PPE use. On the issue of if legally mandated to care for Coronavirus patients, 22% were hesitant to provide care and will considerleaving nursing training if compelled to do so. There was a significantly lower perceived level of readiness towards Coronavirus patient care among 1st-year student nurses and those who had not attended any Coronavirus educational session (p= 0.06). Conclusion: The findings indicate although the majority of student nurses are willing to provide care for Coronavirus infected patients during their clinical posting tenure, a small proportion of student’s nurses were hesitant.

Matched MeSH terms: Demography
Fulltext Unexplained abdominal pain as a driver for inappropriate therapeutics: an audit on the use of intravenous proton pump inhibitors

Lai PS, Wong YY, Low YC, Lau HL, Chin KF, Mahadeva S

PeerJ, 2014;2:e451.
PMID: 25024919 DOI: 10.7717/peerj.451

Background. Proton pump inhibitors (PPIs) are currently the most effective agents for acid-related disorders. However, studies show that 25-75% of patients receiving intravenous PPIs had no appropriate justification, indicating high rates of inappropriate prescribing. Objective. To examine the appropriate use of intravenous PPIs in accordance with guidelines and the efficacy of a prescribing awareness intervention at an Asian teaching institution. Setting. Prospective audit in a tertiary hospital in Malaysia. Method. Every 4th intravenous PPI prescription received in the pharmacy was screened against hospital guidelines. Interventions for incorrect indication/dose/duration were performed. Patients' demographic data, medical history and the use of intravenous PPI were collected. Included were all adult inpatients prescribed intravenous PPI. Main Outcome Measure. Proportion of appropriate IV PPI prescriptions. Results. Data for 106 patients were collected. Most patients were male [65(61.3%)], Chinese [50(47.2%)], with mean age ± SD = 60.3 ± 18.0 years. Most intravenous PPI prescriptions were initiated by junior doctors from the surgical [47(44.3%)] and medical [42(39.6%)] departments. Only 50/106(47.2%) patients had upper gastrointestinal endoscopy/surgery performed to verify the source of bleeding. Unexplained abdominal pain [81(76.4%)] was the main driver for prescribing intravenous PPIs empirically, out of which 73(68.9%) were for suspected upper gastrointestinal bleed. Overall, intravenous PPI was found to be inappropriately prescribed in 56(52.8%) patients for indication, dose or duration. Interventions on the use of intravenous PPI were most effective when performed by senior doctors (100%), followed by clinical pharmacists (50%), and inpatient pharmacists (37.5%, p = 0.027). Conclusion. Inappropriate intravenous PPI usage is still prevalent despite the enforcement of hospital guidelines. The promotion of prescribing awareness and evidence-based prescribing through education of medical staff could result in more judicious use of intravenous PPI and dose-optimization.

Matched MeSH terms: Demography
Two species of Southeast Asian cats in the genus Catopuma with diverging histories: an island endemic forest specialist and a widespread habitat generalist

Patel RP, Förster DW, Kitchener AC, Rayan MD, Mohamed SW, Werner L, et al.

R Soc Open Sci, 2016 Oct;3(10):160350.
PMID: 27853549

Background. The bay cat Catopuma badia is endemic to Borneo, whereas its sister species the Asian golden cat Catopuma temminckii is distributed from the Himalayas and southern China through Indochina, Peninsular Malaysia and Sumatra. Based on morphological data, up to five subspecies of the Asian golden cat have been recognized, but a taxonomic assessment, including molecular data and morphological characters, is still lacking. Results. We combined molecular data (whole mitochondrial genomes), morphological data (pelage) and species distribution projections (up to the Late Pleistocene) to infer how environmental changes may have influenced the distribution of these sister species over the past 120 000 years. The molecular analysis was based on sequenced mitogenomes of 3 bay cats and 40 Asian golden cats derived mainly from archival samples. Our molecular data suggested a time of split between the two species approximately 3.16 Ma and revealed very low nucleotide diversity within the Asian golden cat population, which supports recent expansion of the population. Discussion. The low nucleotide diversity suggested a population bottleneck in the Asian golden cat, possibly caused by the eruption of the Toba volcano in Northern Sumatra (approx. 74 kya), followed by a continuous population expansion in the Late Pleistocene/Early Holocene. Species distribution projections, the reconstruction of the demographic history, a genetic isolation-by-distance pattern and a gradual variation of pelage pattern support the hypothesis of a post-Toba population expansion of the Asian golden cat from south China/Indochina to Peninsular Malaysia and Sumatra. Our findings reject the current classification of five subspecies for the Asian golden cat, but instead support either a monotypic species or one comprising two subspecies: (i) the Sunda golden cat, distributed south of the Isthmus of Kra: C. t. temminckii and (ii) Indochinese, Indian, Himalayan and Chinese golden cats, occurring north of the Isthmus: C. t. moormensis.

Matched MeSH terms: Demography

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