(Acari: Ixodidae) Infestation of Cuscuses from Maluku Province, Indonesia
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Veterinary World, EISSN: 2231-0916 RESEARCH ARTICLE Available at www.veterinaryworld.org/Vol.14/June-2021/9.pdf Open Access Tick (Acari: Ixodidae) infestation of cuscuses from Maluku Province, Indonesia Prasetyarti Utami1,2 , Bambang Heru Budianto1 and Ana Sahara3 1. Faculty of Biology, Universitas Jenderal Soedirman, Purwokerto, Central Java, Indonesia; 2. Program of Biology, Faculty of Science and Technology, Universitas Terbuka, Jakarta, Indonesia; 3. Department of Parasitology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia. Corresponding author: Ana Sahara, e-mail: [email protected] Co-authors: PU: [email protected], BHB: [email protected] Received: 03-01-2021, Accepted: 08-04-2021, Published online: 08-06-2021 doi: www.doi.org/10.14202/vetworld.2021.1465-1471 How to cite this article: Utami P, Budianto BH, Sahara A (2021) Tick (Acari: Ixodidae) infestation of cuscuses from Maluku Province, Indonesia, Veterinary World, 14(6): 1465-1471. Abstract Background and Aim: Cuscuses are one of the endemic Indonesian marsupials, which needs to be protected and revived in terms of the numbers and range of species. Ectoparasites of ticks (Ixodidae) are one potential obstacle to cuscus conservation. Tick infestation can cause blood loss in the host, even being a predisposing factor for infection with pathogenic organisms. This study aimed to determine the prevalence, infestation intensity, and species of ticks present on cuscuses in Maluku Province, Indonesia. Materials and Methods: Ticks were collected from cuscuses origin of the four regions in Maluku Province, namely the island of Ambon, Seram Island, Romang Island, and Wetar Island . Cuscuses were captured at night, with ticks being collected from them from the head to the tip of the tail. The tick samples obtained from the cuscuses were preserved, identified, and counted. Cuscuses were released back into their habitat after collecting the ticks. The obtained ticks were observed using an Olympus BX51 microscope with an Olympus DP12 digital camera and prepared for examination under a scanning electron microscope (SEM). Infestation rate, infestation intensity, and morphology of the species were described. Results: The cuscuses were found to be infested with Ixodes cordifer ticks. Cuscuses in Maluku Province had a low tick infestation rate. The range of infestation prevalence of island origin cuscuses in Maluku was between 14.28% and 16.67%. Simultaneously, I. cordifer infestation level was mildly infested based on the intensity of thick infestation ranged from 1 to 1.2 ticks per cuscus. From observation of the tick surface structure under SEM, sexual dimorphism and various specific characteristics of the ticks were identified. Conclusion: The low infestation rate of I. cordifer ticks in cuscus was influenced by the up and down movement of the conscious activity in the tree, which allowed minimal contact with the ticks. The infestation prevalence rates on each island studied were similar. Such similarities of infestation are related to the similarity of cuscus species among Ambon, Lakor, Seram, and Romang islands, which are all included in the Phalangeridae family, and their similar habitats, behaviors, climatic conditions, and geographical areas. Keywords: Cuscus, Ixodes, scanning electron microscope. Introduction (Spilocuscus papuensis), bear cuscus (Ailurops ursinus), Cuscus is a marsupial of the Phalangeridae family and blue-eyed cuscus (Phalanger matabiru). There are with a relatively wide distribution, which is especially six cuscus genera globally, namely, Ailurops, Phalanger, prevalent in East Indonesia and Papua New Guinea. Spilocuscus, Strigocuscus, Wyulda, and Trichosurus, The distribution of cuscus in Indonesia is restricted to with 28 species [2]. Four genera of the Phalangeridae the east of the country, in Maluku, Sulawesi, Papua, are distributed in Indonesia, with several species and Timor [1]. Several species of cuscus are critically endemic to Papua, the Maluku Islands, and the Sulawesi endangered and headed for extinction (vulnerable), Islands There are approximately 24 species of cuscus in Indonesia, but they are becoming increasingly rare. such as woodlark cuscus (Phalanger lullulae), Gebe Flannery [3] reported that Phalanger orientalis was scat- cuscus (Phalanger alexander), blue-eyed spotted cus- tered from Timor, Wetar, the Maluku Islands of Misool, cus (Spilocuscus wilsoni), Telefomin cuscus (Phalanger Batanta, Salawati, and New Guinea to the Bismarck matanim), black-spotted cuscus (Spilocuscus rufoniger), islands on the eastern side of Papua New Guinea. Talaud bear cuscus (Ailurops melanotis), Waigeo cuscus Spilocuscus spp. have been reported to be scat- Copyright: Utami, et al. Open Access. This article is distributed under tered in the southern part of the Maluku Islands (Buru, the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which Seram, Banda, and Ambon), Aru Islands, Kei Islands, permits unrestricted use, distribution, and reproduction in any Misool, Yapen, and the mainland of New Guinea medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons (Papua), as well as to inhabit a small part of Cape York license, and indicate if changes were made. The Creative Commons Peninsula in North Australia [4]. Public Domain Dedication waiver (http://creativecommons.org/ publicdomain/zero/1.0/) applies to the data made available in this In Indonesia, cuscus has been protected since article, unless otherwise stated. 1979 by the prohibition on the capture of such animals, Veterinary World, EISSN: 2231-0916 1465 Available at www.veterinaryworld.org/Vol.14/June-2021/9.pdf as set out in the Order Minister of Agriculture No. 247/ ticks because no study has been carried out on ticks KPTS/UM4/1979, Wild Animal Hunting Regulation obtained from cuscuses in Indonesia. (PPBL) No. 226/1931, Law No. 5/1990 concern- This study aimed to determine the prevalence, ing the conservation of living natural resources and infestation intensity, and species of ticks present on cus- their ecosystems, and Law No. 7/1999 concerning the cuses in Maluku Province, Indonesia. There is also a need preservation of plant and animal species. According to compare detailed morphological features of the ticks to CITES data (Convention on International Trade in with the descriptions that have been reported previously. Endangered Species of Wild Fauna and Flora), sev- Materials and Methods eral Indonesian marsupial species are endangered, so they are included in Appendix II, while IUCN data Ethical approval (International Union for Conservation of Nature and This study is complementary to the ethi- Natural Resources) classify them as endangered spe- cal requirements of laboratory animals and has cies (IUCN, 2008). Kunda et al. [5,6] stated that the been approved by the Ethics Committee team of Laboratorium Penelitian dan Pengujian Terpadu decline in the cuscus population has been significantly Universitas Gadjah Mada (LPPT UGM). influenced by hunting by humans, while genetic fac- tors have also contributed. Illegal hunting is the basis Study period and location for trading in its illegal meat, as it is consumed as a This research was conducted from August 2017 protein source and to meet meat needs during church to July 2020. Collection of ticks on cuscus was carried ceremonies [7,8]. out in Maluku Province namely Ambon Island, Seram Pathologically, all members of marsupials Island, Romang Island, and Wetar Island (Figure-1). are susceptible to pathogenic infections by bacte- Samples were processed at Indonesian Institute ria, viruses, or parasites [9]. Ticks can cause health of Sciences, Cibinong, Indonesia; Laboratorium problems such as anemia, dermatitis, and secondary Penelitian dan Penujuan Terpadu, Universitas Gadjah infections [10]. The ectoparasites found in almost Mada (LPPT UGM); and Laboratory of Parasitology, all groups of marsupials are hard ticks belonging to Faculty of Veterinary Medicine, Universitas Gadjah the genus Ixodes. Ticks of the genus Ixodes Latreille, Mada, Yogyakarta, Indonesia. 1795, are common parasites of reptiles, birds, and Tick collection mammals worldwide. The tick species Ixodes cor- Cuscuses were captured using a method involving difer has been found in cuscuses in Indonesia [11,12], imitation of their sounds to lure them out of the under- but the infestation rate and intensity of tick infesta- growth. This is a well-recognized approach locally. tion have not been reported. There is also a need to When a cuscus jumped from one branch to another and describe the surface ultrastructural morphology of the reached the point where the sounds originated, it was Figure-1: Locations of tick collection on cuscus on Wetar, Romang, Ambon, and Seram Islands (Source: https:// id.wikipedia.org/wiki/Kepulauan_Maluku). Veterinary World, EISSN: 2231-0916 1466 Available at www.veterinaryworld.org/Vol.14/June-2021/9.pdf captured with a gunny sack and immediately injected The determined prevalence of tick-infested with ketamine and xylazine by veterinary personnel. cuscuses is presented as the proportion of cuscuses In an unconscious state, each captured cuscus was infected with tick relative to the total number of cus- carefully examined for ticks (Figure-2). Subsequently, cus samples. The intensity of tick infestation was the cuscus was allowed to return to consciousness and determined based on comparison