Borneo Journal of Resource Science and Technology (2022), 12(1): 177-187 DOI: https:doi.org/10.33736/bjrst.4463.2022 Arthropod Communities on Sonneratia caseolaris along Selangor River, Kampung Kuantan, Kuala Selangor, Malaysia NURUL AINA ADNAN 1 , MAMAT NUR-SYAHIRAH 2 , DZULHELMI MUHAMMAD NASIR 3 , NUR-ATHIRAH ABDULLAH 1 , LAILATUL-NADHIRAH ASRI 1 , MUHAMMAD FAIZ ZAKARIA 4 , ADNAN AMIN-SAFWAN 5 , SURZANNE MOHD AGOS 6 , WAN JULIANA WAN AHMAD 1 , MAIMON ABDULLAH 1 , NORELA SULAIMAN 1 & FASZLY RAHIM* 1,7 1 Department of Earth Science and Environment, Faculty Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia; 2 International Institute of Aquaculture and Aquatic Sciences (I- AQUAS), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; 3 Biology and Sustainability Research Division, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia; 4 Faculty of Environment and Marine Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; 5 Department of Applied Sciences and Agriculture, Tunku Abdul Rahman University College, Johor Branch Campus, Jalan Segamat/Labis, 85000 Segamat, Johor, Malaysia; 6 Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; 7 PERMATA Insan College, Universiti Sains Islam Malaysia, 71800 Bandar Baru Nilai, Negeri Sembilan, Malaysia *Corresponding author: faszly@usim.edu.my Received: 13 January 2022 Accepted: 28 May 2022 Published: 30 June 2022 ABSTRACT Sonneratia caseolaris commonly known as mangrove apple or Berembang in the Malay language, is a species of plant in the family Lythraceae. Area of S. caseolaris along Selangor River in Kampung Kuantan has become a natural habitat for a variety of arthropods. This study aimed to identify the species variations in arthropod communities at different selected stations along Selangor River at two different sampling times. Present study was conducted for six consecutive months (August 2010 until January 2011) at 19 selected stations along the Selangor River. Sampling was conducted once per day and night. Sweeping method by using sweep nets were used as the arthropod sampling method. Data analysis was done quantitatively to determine the composition of arthropod community. A total of 7,707 individual arthropods collected belonging to 10 different orders consisting of Coleoptera, Hymenoptera, Diptera, Neuroptera, Orthoptera, Odonata, Lepidoptera, Blattodea, Mantodea and Araneae. A total of 4,563 arthropod individuals were sampled at night, which was more than the daytime (3,144 individuals), with Station 17 recorded the highest arthropod individual out of the 19 sampling sites. During the night, the firefly, that belongs to the Lampyridae family showed the highest arthropod composition. The presence of arthropod biodiversity along the Selangor River reveals that the S. caseolaris area is important in maintaining a diverse community of fireflies and other arthropods for conservation purposes. Keywords: Arthropod community, fireflies, mangrove, Sonneratia caseolaris Copyright: This is an open access article distributed under the terms of the CC-BY-NC-SA (Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License) which permits unrestricted use, distribution, and reproduction in any medium, for non-commercial purposes, provided the original work of the author(s) is properly cited. INTRODUCTION Selangor River is known as greatest source of water (about 60%) in state of Selangor and Kuala Lumpur (Othman et al., 2014) that play a crucial role as a major source of protein through fisheries and aquaculture businesses, and an irrigation source for agriculture. Mangroves can be found in the Selangor River estuary up to 20 km along the coast. Despite the fact that Selangor River and its riverbanks have been designated as a protected zone under the Selangor Waters Management Authority Enactment 1999, the loss of firefly habitats along Selangor River has been recorded since 2007. According to Khoo et al. (2009), throughout the year 2008, there was a gradual increase in loss of firefly habitats. The most dominant mangrove trees in this area are Sonneratia caseolaris species, known as Berembang in Malay. Berembang is classified under the order Myrtales and the family Lythraceae. Berembang are non-viviparous plants and an essential component of mangrove communities in the West-Indo Pacific (Chen et al., 2008). A high abundance of S. caseolaris or Berembang tress attracts fireflies, from the