Sabit Hasan

Isabela Foundation · Wildlife Research and Conservation

Agricultural expansion has had a detrimental effect on tropical forests and the animal communities that depend on them. Agroforestry systems, however, with their more complex tree and plant communities, have been shown to be important habitats for a range of globally threatened species, including nocturnal animals. Here, we present novel data on th...

Venomous snakes are one of the most dreadful animals globally that kill their victims by injecting venoms (toxic substances) using fangs. However, snakes are being used for numerous vital life-saving purposes, including antivenom and traditional medicines, pain killers, cancer treatment, cardiac arrest, paralysis, arthritis, anti-ageing, and cosmet...

not available Bangladesh J. Zool. 49 (3): 441-445, 2021

Tropical forests are threatened worldwide due to deforestation. In South and Southeast Asia, gibbons (Hylobatidae) are important to seed dispersal and forest regeneration. Most gibbons are threatened due to deforestation. We studied the western hoolock gibbon (Hoolock hoolock) in Bangla-desh to determine population size and extent of suitable habit...

Infanticide, the intentional killing of conspecific infants, has been observed widely in mammals, including squirrels. Several ground squirrels revealed this behavioral anomaly, yet no report has been published on the flying squirrels. We report an observation of killing an infant of the particolored flying squirrel (Hylopetes alboniger) by a consp...

Tropical forests harbor complex communities that are linked together by biotic relationships. Asian forests in particular have lost many apex predators due to habitat loss. We studied a small forest patch in northeastern Bangladesh, Satchari National Park, to determine density and diversity of nocturnal mammals and evaluate their relationships. Tra...

Bangladeshi chiropteran fauna is poorly studied and there is a lack of complete inventories. A total of 39 species of bats have been reported to occur in the country. Great Woolly Horseshoe Bat Rhinolophus luctus, (Temmick 1834) has been expected to occur in northeast Bangladesh based on its presence in north-eastern India and adjoining areas. Howe...

Raorchestes is a genus of small bush frog characterized by an absence of vomerine teeth, direct development without free swimming larvae, and a transparent gular pouch while calling. During a larger study on canopy fauna in the northeastern region of Bangladesh, five specimens of a small bush frog were collected from Satchari National Park in June...

Evolution, Ecology and Conservation of Lorises and Pottos - edited by K. A. I. Nekaris March 2020

There is no precise estimation of globally endangered Phayre’s Langur (Trachypithecus phayrei) population in Bangladesh. Published reports revealed a sharp decline of more than 80% population in Bangladesh during the last three generations. So, we surveyed the Langur population in five northeastern forests of Bangladesh since March 2018 to Septembe...

A study entitled ‘Home range and habitat characteristics of Western Hoolock Gibbon (Hoolock hoolock) in Lawachara National Park, Bangladesh’ was conducted from April 2019 to October 2019. A group of Hoolock Gibbon was selected to observe using scan sampling method. Scans were followed at 5 minutes interval to determine the home range size and forag...

Western Hoolock Gibbon (Hoolock hoolock, Harlan, 1834) is the only lesser ape found in Bangladesh that is classified as critically endangered by the IUCN. Their population is declining due to habitat destruction, fragmentation, disturbance, and hunting. We observed a group of gibbons with 4 individuals in Lawachara National Park in northeastern Ban...

Phayre’s Langur (Trachypithecus phayrei) is a globally endangered primate, distributing to south and south-east Asian countries. Fragmentation and destruction of habitats, hunting, inbreeding and local trading are known causes to decline its population. The existing population was reported to be less than 100 individuals in Bangladesh and a decline...

Butterflies are well known to mud-puddle under sunlight.Mud-puddling behavior of butterflies at night was not known. Here, we report an opportunistic observation of mud-puddling behavior of Lethe mekara and Halpe porus butterflies at midnight in a semi-evergreen forest of northeast Bangladesh.This observation is noteworthy enlightening a secret sid...

This is about new distribution record of UPERODON GLOBULOSUS (Indian Balloon Frog) at Khulna Division (SW region) in Bangladesh.

A single observation of courtship, mating, and ritualized combat behavior is reported for Varanus bengalensis in Bangladesh. Some peculiar behaviors such as basking between copulations and post-mating combat behavior are also described.

Common Hoopoe Upupa epops was thought to breed in Bangladesh but with no confirmed records. The observation presented in this paper of a breeding pair with its chick at Satchari National Park in northeastern Bangladesh is the first confirmed breeding record of the species from the country.

A single observation of courtship, mating, and ritualized combat behavior is reported for Varanus bengalensis in Bangladesh. Some peculiar behaviors such as basking between copulations and post-mating combat behavior are also described.

A study was done on Roosting site selection of Black Kite (Milvus migrans) in over populated landscape in four study sites under Dhaka North City Corporation Area from 13 October 2017 to 18 January 2018. The selected study sites were Ramna Park, Dhaka University Campus, Suhrawardy Uddyan, and Osmani Uddyan. The sites were selected on the basis of B...

New distribution record of Indian Ballon Frog.

New distribution record of Indian Balloon Frog in Bangladesh.

Cyrtodactylus tripuraensis (Agarwal, Mahony, Giri, Chaitanya & Bauer, 2018) was recently described from Tripura state of northeast India. In June 2018, we found a subadult and an adult male individual in Lawachara National Park, ‎ Maulvibazar District, Sylhet Division, Bangladesh. We identify the individuals as C. tripuraensis based on morphologica...