Dung beetle assemblages in lowland forests of Pangandaran Nature Reserve, West Java, Indonesia

Abstract

Abstract. Priawandiputra W, Tsuji Y, Widayati KA, Suryobroto B. 2020. Dung beetle assemblages in lowland forests of Pangandaran Nature Reserve, West Java, Indonesia. Biodiversitas 21: 497-504. Dung beetles play crucial role in forest ecosystem, but no information on the dung beetle fauna has been reported in lowland forest of Java Island, Indonesia. Pangandaran Nature Reserve (PNR) area, which is recognized as lowland habitat of wildlife, can also support diversity of dung beetles. This study was conducted to examine the dung beetle diversity in lowland forests of PNR. The dung beetles were collected using pitfall traps baited with five species of mammal’s feces and hand collection of beetles found on dung along the road, between 2016 and 2018. During the study, 853 individuals of dung beetles from 17 species were collected. The dominant species were Onthophagus babirussa with 434 individuals (50.8%). The species were not dominant in the mountainous forests of West Java and in lowland forests of Southeast Sulawesi and East Kalimantan. The highest dung beetle abundances were found during the dry season (August): 335 individuals in 2017 and 286 in 2018. However, the diversity index value of dung beetles in this study was lower in the dry season than in the wet season (t-test of diversity index, P<0.05). The dung beetle assemblages in PNR were barely similar to most dung beetle studies of other regions.

The Diversity of Scarabaeid Beetles (Scarabaeidae: Coleoptera) in The Lowland Rainforest Ecosystem of Sorong Nature Tourism Park, West Papua, Indonesia

“…Kahono and Setiadi (2007) reported 28 species of dung beetle in mountain forest ecosystem of Pangrango National Park, West Java and the dominant species was Onthophagus variolaris Lansb (382 individuals). Priawandiputra et al (2020) also reported in the lowland forest ecosystem in the Pangandaran Nature Reserve, West Java and the dominant species was Onthophagus babirussa Eschscholtz (434 individuals). Dung beetles have also been reported in montane forest of the Harau Valley Nature Reserve, West Sumatra (Putri et al 2014); Kayan Mentaran National Park, East Kalimantan (Kahono & Ubaidillah 2003); Gunung Palung National Park, West Kalimantan (Malina et al 2018); and Lambusango Forest, Buton, Sulawesi (Moy et al 2016).…”

Keanekaragaman dan kelimpahan kumbang cerambycid (Coleoptera: Cerambycidae) di Cagar Alam Pangandaran, Jawa Barat

“…Laporan mengenai keanekaragaman hayati di kawasan ini antara lain primata, mamalia besar, dan vegetasi. Laporan keanekaragaman hayati serangga, seperti kumbang kotoran (dung beetle) di hutan Pangandaran juga sudah dilaporkan oleh Priawandiputra et al (2020), yaitu sebanyak 17 spesies dan Onthophagus babirussa (Eschscholtz) merupakan spesies dominan. Keanekaragaman kumbang cerambycid di kawasan hutan Pangandaran belum pernah di laporkan sebelumnya.…”

Sexual size dimorphism and male reproductive traits vary across populations of a tropical rainforest dung beetle species (Onthophagus babirussa)

“…Interestingly, surveys conducted in Singapore identified some species where wild‐caught males were consistently larger than females. Of particular interest is the species Onthophagus babirussa (Coleoptera: Scarabaeidae; Eschscholtz, 1822), which is widespread across Southeast Asia (SEA; Goh, 2014 ; Kudavidanage et al, 2012 ; Priawandiputra et al, 2020 ; Toh, 2019 ). Body size of specimens from Peninsular Malaysia appeared similar between the sexes, contrary to specimens collected from Singapore, despite relatively close proximity (~316 km).…”

“…Interestingly, surveys conducted in Singapore identified some species where wild-caught males were consistently larger than females. Of particular interest is the species Onthophagus babirussa (Coleoptera: Scarabaeidae; Eschscholtz, 1822), which is widespread across Southeast Asia (SEA; Goh, 2014;Kudavidanage et al, 2012;Priawandiputra et al, 2020;Toh, 2019).…”