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All Journal HAYATI Journal of Biosciences Jurnal Ilmu Pertanian Indonesia AL KAUNIYAH Jurnal Sumberdaya Hayati Jurnal Natural

KANTHI ARUM WIDAYATI

Department Of Biology, Faculty Of Mathematics And Natural Sciences, Bogor Agricultural University, Bogor, Indonesia

Author-ID : 415221

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Energy Immunology & microbiology Materials Science & Nanotechnology Neuroscience Physics

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Human brain posseses the ability to create a concept to assist the process of grouping individual object or events into different classes or categories. We call this grouping process as categorization. In addition to humans, the ability to categorize has also been proposed for animals. Being able to identify, visually or otherwise, a new object as a member of a category is an advantage for animals. Present experiment aims to test the categorization ability in discriminating species by Macaca fas KANTHI ARUM WIDAYATI; BAMBANG SURYOBROTO; ACHMAD FARAJALLAH; AKICHIKA MIKAMI
HAYATI Journal of Biosciences Vol. 18 No. 4 (2011): December 2011
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.18.4.177

Human brain posseses the ability to create a concept to assist the process of grouping individual object or events into different classes or categories. We call this grouping process as categorization. In addition to humans, the ability to categorize has also been proposed for animals. Being able to identify, visually or otherwise, a new object as a member of a category is an advantage for animals. Present experiment aims to test the categorization ability in discriminating species by Macaca fascicularis. Using match-to-sample task with photographs of monkeys and human as stimuli, we tested whether monkeys able to categorize monkey individuals as a class against human individuals as another class. We found that monkeys categorized humans differently from monkeys. The monkeys used physical characteristic such as shape and colors from the photographs to create different concepts of human and monkeys.

Dietary Variation of Long Tailed Macaques (Macaca fascicularis) in Telaga Warna, Bogor, West Java SARAH NILA; BAMBANG SURYOBROTO; KANTHI ARUM WIDAYATI
HAYATI Journal of Biosciences Vol. 21 No. 1 (2014): March 2014
Publisher : Bogor Agricultural University, Indonesia

The genus Macaca, member of sub-family Cercopithecinae, is the most widely distributed non-human primates in Asian countries. The habitats are strongly influence the dietary variation of the populations. The dietary variation of the macaques reflect ecological plasticity in coping with differences both in availability and abundance of food. The macaques are plastic in taking any kind of food that available in their home range and adjust their behaviour according to its abundance. Here, we present the dietary variation of long-tailed macaques (Macaca fascicularis) in the high altitude rain forest of Telaga Warna, West Java, Indonesia. The proportion of their food from natural sources is greater than those from visitors. The natural food consisted of plants, small animals (insects and earthworm), fungi and water from lake. The plant food comprised of 29 species plus a few mosses. The frequency of eating artificial food was influenced by visitors who come for picnic. In this site, the macaques learned that the visiting of tourists is identical with food.

The Notes on Mammal Carcasses Collected in Pangandaran Nature Reserve, West Java, Indonesia Yamato Tsuji; Bambang Prayitno; Ona Norwana; Emiko Nishi; Kanthi Arum Widayati; Akichika Mikami; Bambang Suryobroto
HAYATI Journal of Biosciences Vol. 23 No. 1 (2016): January 2016
Publisher : Bogor Agricultural University, Indonesia

A field survey was conducted in Pangandaran Nature Reserve (PNR), West Java, Indonesia between 2011 and 2015, during which fresh carcasses of wild mammals were collected. Body sizes of these carcasses were performed. This paper reports relevant data for future applications.

Cognitive Style and Creative Quality: Influence on Academic Achievement of University Students in Indonesia Nurul Huda Wulandari; Kanthi Arum Widayati; Bambang Suryobroto
HAYATI Journal of Biosciences Vol. 23 No. 3 (2016): July 2016
Publisher : Bogor Agricultural University, Indonesia

Reasoning is a process to solve the problem. This process needs cognitive functions in thinking, learning, and making decision. Cognitive style is a term to explain human natural preferences in gathering and processing information. Humans appears to reason using two cognitive processing styles; the first system is called as intuitive thinking style that is spontaneous, effortless, and without conscious search, whereas the second system is called as reflective or analytical thinking that works in a deliberate, analytical, procedural, and controllable process. In human context, sometimes people encounter difficult problem or unknown situation that have to be coped by ideas that are both novel and adaptive to the task constraints. People who solve the problem successfully are called creative. Creativity is the base to enhance competitiveness among students that might result in good academic performance. The present study examined cognitive style and creative quality in affecting academic achievement of university students in Indonesia. The result showed that students who used analytical thinking tended to have higher academic success, especially in life science majors. Moreover, it was found that students would need to materialize their creative potential to reach greater academic achievement in demanding classes; for instance, the final year of undergraduate program.

Correlation between Stress and Eating Behaviour in College Students: A Longitudinal Study Nabila Dhiya Ulhaq; Dela Putri Amalia; Kania Dewi Rafa; Iffi Rizkiya; Yuniarti Dwi Astuti; Farika Febriyanti; Syafaatun Alrahmah; Kanthi Arum Widayati
HAYATI Journal of Biosciences Vol. 30 No. 1 (2023): January 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.1.88-94

Stress is a process that involves the perception of and response to pressure and is often related to eating behaviour. For college students, academic stress could be one factor that affects eating behaviour. So far, no longitudinal study has directly compared the same respondents’ stress levels and eating behaviours in different years of study. Thus, this study aimed to examine changes in stress levels and eating behaviour during college students’ third and final years and determine the correlation between stress levels and eating behaviour. We asked 89 undergraduate students (27 males and 62 females) to complete a questionnaire on their stress levels using the Perceived Stress Scale (PSS-10) and their eating behaviour. Our results showed that students had significantly higher stress levels during the final year than in their third year. Our results also showed that during the student’s final year, there was a significant increase in eating when feeling stressed, overeating, eating fast food, and skipping meals compared to their third year. There was also a significant decrease in healthy food consumption during the final year compared to the third year. During the third year of study, stress levels were increased by academic workload pressure; meanwhile, during the final year of study, they were affected by sex and undergraduate thesis pressure. These results indicate that differences in academic pressure in different years of study can influence stress levels and eating behaviour in college students.

The Facial Width-To-Height Ratio is Unrelated to Aggressive Behaviour in Indonesian People Muhammad Isa Ananta; Andy Darmawan; Sarah Nila; Kanthi Arum Widayati
HAYATI Journal of Biosciences Vol. 30 No. 3 (2023): May 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.3.413-420

As a channel of non-verbal communication, faces can give information such as mate attraction, intelligence, and aggressivity. Aggressivity is a character to dominate, protect position, and fight over resources. Several aggressive behaviours in humans are, for example, anger, hostility, physical aggression, and verbal aggression. Previous studies in western society showed that aggressivity could be perceived from the faces. We tested 100 Indonesian males ranging from 19-51 years old to fill out the Buss-Perry Aggression Questionnaire (BPAQ) to measure the aggression scale. The mean of their BPAQ scales (total aggression, anger, hostility, physical aggression, and verbal aggression) were 72.44±10.84, 17.37±3.97, 21.38±4.53, 18.97±4.65, 14.72±2.68, respectively. The average facial photograph was generated based on the min-Q1 (Low Aggressivity (LA)) and Q3-max (High Aggressivity (HA)) BPAQ scale. Next, the aggressivity of averaged LA and HA faces was evaluated by raters. The raters consisted of 145 males and 213 females randomly recruited, ranging from 17 to 67 years old. The facial width-to-height (fWHR) ratio between the average faces of the Low-Aggression face and the High-Aggression face was insignificant. This study concluded that Indonesian people could not perceive aggressivity in their faces.

Variation of Handedness and Creativity in Bogor Primary and Secondary School Students Winati Nurhayu; Permesyawari Muktiono; Kanthi Arum Widayati; Bambang Suryobroto
HAYATI Journal of Biosciences Vol. 30 No. 3 (2023): May 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.3.451-456

Left-handed individual’s minority has been ubiquitous in human population which leads them to be adaptable in right-handed world. As a preference, daily hand used must be consistentacross individuals and tasks, known as handedness. Handedness needs to be assessed with specific tasks using tools due to consistency of using either hand. There is a different adaptation that leads to creativity in left-handed individuals. The aim of this study is to assess left-handed individuals and measure their creativity. Handedness was examined by self-declared and 10 specific tasks of 493 both primary and secondary school students in Bogor, Indonesia. The total frequency of left-handed individuals was 7.3%. It seems that there are special adaptations that may signal creative behavior for left-handed individuals. The result showed that the left-handed females had higher creativity score than the males on Adjective Check List. Age and sex influence on creativity are discussed.

Activity Budget and Diet in Sumatran Orangutan (Pongo abelii) at Soraya Research Station, Aceh Mahyana; Kanthi Arum Widayati; Puji Rianti
HAYATI Journal of Biosciences Vol. 30 No. 4 (2023): July 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.4.653-661

Geographical and environmental factors influence the food availability and diet of orangutans. Moreover, tree phenology affects productivity and food availability in orangutan habitats. As a result, orangutans must be able to adapt to their food availability in the wild. This study aims to analyse the daily activity patterns and eating behaviour of the Sumatran orangutan (Pongo abelii) and their relationship to food availability through the fruit availability index (FAI) and phenology at Soraya Research Station (SRS), Aceh. From the 648 hours of observation on five orangutans' daily activities, we found that resting is the activity with the highest percentage (48%), followed by feeding (22.5%) and moving (21.8%). The high percentage of resting activity might correlate with its low FAI in SRS (1.01%). The resting activity limits orangutans' energy expenditure. Furthermore, barks, fruits, and other plants (including lianas, ferns, and epiphytes) were the main type of diet of Sumatran orangutans in SRS with a frequency of 40.6%, 28.9%, and 15.6%, respectively. The high bark consumption by the orangutans acts as their fallback diet at SRS and is thought to be a form of adaptation to the low fruit availability. This study showed the orangutan adaptation to low fruit availability in SRS through their daily activity and diet patterns.

Variation and Distribution of the Sulawesi Giant Rat (Paruromys dominator) Based on Morphological Approaches Dwijayanti, Endah; Suryobroto, Bambang; Widayati, Kanthi Arum; Achmadi, Anang Setiawan
HAYATI Journal of Biosciences Vol. 31 No. 6 (2024): November 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.6.1037-1049

Correlations between natural geographic boundaries and variations in organisms' morphology have been well-documented in Sulawesi Island, which has a unique geological history and hundreds of endemic species. One of the widely distributed species of small mammals is Sulawesi giant rat (Paruromys dominator). Considering the geographic condition of Sulawesi, this species is a suitable model for studying geographic influences on morphological change. Moreover, there are no comprehensive studies on this species. Previous studies cannot fully explain the variability due to the lack of representative samples. Here, we measure 19 skull characteristics for 131 adult complete-skull specimens from six distribution areas in Sulawesi. We investigate the variation in skull characteristics using agglomeration nesting (AGNES) for cluster analysis and the standardized major axis (SMA) for allometry analysis. Our results show that P. dominator can be categorized into two groups, but distribution areas, elevation, or sex do not influence those. P. dominator in group 1 had a larger skull size than group 2. The two groups can be distinguished from four characteristics: breadth of mesopterygoid fossa (BMF), breadth of first upper molar (BM1), length of the auditory bulla (LB), and breadth of incisive foramina (BIF). The BMF and BM1 are related to mastication, and the LB and BIF are related to communication. We propose that the skull variation of this species is not correlated with geographical barriers but more clearly correlated with their feeding habits, mating behavior, and ability to escape predation. These findings were useful for future studies on the taxonomic status of P. dominator.

Relationship between Fluid Intelligence and Executive Function among University Students in Indonesia Suryono, Alfina Zalfa; Rohmatullayaly, Eneng Nunuz; Widayati, Kanthi Arum
HAYATI Journal of Biosciences Vol. 32 No. 4 (2025): July 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.4.950-956

Fluid intelligence is the ability to think logically and abstractly. Executive function is the behavioural ability to coordinate, control and adapt to new situations. Fluid intelligence and executive function play an important role in the ability to solve problems, adapt, and carry out daily behaviour. Previous research states that high fluid intelligence is followed by high executive function. Currently, there are no data regarding the relationship between fluid intelligence and executive function and the socio-demographic factors associated with both variables. Therefore, this study to examine the relationship and socio-demographic factors between fluid intelligence and executive function among university students in Indonesia. This study was conducted using a questionnaire and the zoom platform with a total of 306 university student in Indonesia. First, responders will complete a questionnaire containing demographic information. Second, respondents will be contacted again to assess fluid intelligence using the Baddeley Reasoning Test and executive function measurement using Tower of Hanoi. This study found that fluid intelligence was not substantially linked with planning time. However, high fluid intelligence was strongly related with less mobility and overall time. The socio-demographic component related with fluid intelligence is age. Sociodemographic factors related with executive function include sex, education level, and study discipline, as well as overall time.

Co-Authors ACHMAD FARAJALLAH Adhara, Gaetania Faza Akichika Mikami AKICHIKA MIKAMI Alfath Fanidya Anang Setiawan Achmadi Ananta, Muhammad Isa Andy Darmawan Arismayanti Eka Arma Aditya Kartika Assaumi, Nurul Wardah ASTUTI LATIF Bambang Prayitno Bambang Suryobroto Burhanuddin Burhanuddin Dela Putri Amalia Dwijayanti, Endah Emiko Nishi Eneng Nunuz Rohmatullayaly Farika Febriyanti HANNY RAMADHANTI Hapsari, Eno Aulia Hayati, Rizki Rahma Iffi Rizkiya Imai, Hiroo Inas Salimah Indira Nurul Qomariah Ishlah, Azimah Wardahtul Kadang, Septiany Anugrah Kania Dewi Rafa LIZA MAHERA Mahyana Maker, Ursula Paulawati Maria Ulfah Muhammad Al Anshari Muhammad Isa Ananta Nabila Dhiya Ulhaq Nadya Aulia Putri Nisa, Nisfia Rakhmatun Nur Anisa Nurul Huda Wulandari Ona Norwana Permesyawari Muktiono Puji Rianti Rahma, Hanifa Ramadhan, Muhammad Roykhan Dwidasa Ribut, Amat RIKA RAFFIUDIN Sadana, Firnandez Ngariswara Vidsia Santi Julianti SARAH NILA Sarah Nila Sese, Moh. Reza Shafira, Aviani Rinfi SITI SARI AZYATI Soleha, Ismayanti Suryono, Alfina Zalfa Syafaatun Alrahmah Tri Atmowidi Wildan Arsyad F Winati Nurhayu Yamato Tsuji Yuniarti Dwi Astuti Zakaria, Muhammad Dafa

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