New insights into Sulawesi's apex predator: the Sulawesi civet Macrogalidia musschenbroekii

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New insights into Sulawesi's apex predator: the Sulawesi civet Macrogalidia musschenbroekii
New insights into Sulawesi's apex predator:
             the Sulawesi civet Macrogalidia musschenbroekii
                       IWAN HUNOWU, ALFONS PATANDUNG, WULAN PUSPARINI, ISABEL DANISMEND
                         ANDI CAHYANA, SYAHRIL ABDULLAH, CASPIAN L. JOHNSON, HARRY HILSER
                                           R I V O R A H A S I A , J E N L Y G A W I N A and M A T T H E W L I N K I E

             Abstract The Sulawesi civet Macrogalidia musschenbroekii is                            mammal are endemic (Whitten et al., ). This includes
             endemic to the Indonesian island of Sulawesi, where it is the                          several ground-dwelling endemic ungulates: the babirusa
             largest mammalian predator. Limited field data means that                              Babyrousa celebensis, Sulawesi warty pig Sus celebensis, and
             little is known about the species’ distribution, habitat prefer-                       anoas Bubalus depressicornis and Bubalus quarlesi. Yet despite
             ences, conservation status and needs, but it is believed to de-                        this potentially rich prey base, the island’s apex mammalian
             pend on primary forest. We conducted camera-trap surveys                               predator is the native Sulawesi civet Macrogalidia musschen-
             across the forests of North Sulawesi, including in two of                              broekii, weighing only – kg. Excluding feral dogs and cats,
             its main protected areas: Bogani Nani Wartabone National                               the other mammalian carnivore species known from Sulawesi
             Park and Tangkoko Nature Reserve. From  camera trap                                 are the Malay civet Viverra tangalunga and common palm
             stations and , trap nights, Sulawesi civets were recorded                         civet Paradoxurus hermaphrodites, both introduced to the
              times at  stations, and in almost equal numbers in pri-                           island in the th century. The latter is rare on the island
             mary forest, secondary forest and farmland, including the                              and may not be fully established (Wemmer & Watling, ;
             first photographic records from both the National Park and                             Veron, ; Veron et al., ).
             Nature Reserve. We also collected data on the Malay civet                                  The Sulawesi civet is a little known carnivore species
             Viverra tangalunga, an introduced species of Viverridae and                            named in  when a specimen was brought to Leiden
             potential competitor. Our records (n = ) revealed that it                            Museum, Netherlands (Wemmer & Watling, ; Veron,
             is established in secondary forest; it only co-occurred twice                          ). It was nearly a century later, however, before studies
             with the Sulawesi civet. With a lapse of .  years since the                          on captured individuals, from central Sulawesi, provided the
             last field record of the Sulawesi civet, our findings offer new                        first insights into its behaviour and diet, which include
             insight into its status and new enthusiasm within the pro-                             rodents and fruit (e.g. Arenga and Pandanus), and indicated
             vincial government for its conservation, which has led to                              a preference for primary forest (Wemmer & Watling, ).
             an extension of camera-trap research into neighbouring                                     The Sulawesi civet is categorized as Vulnerable on the
             Gorontalo province.                                                                    IUCN Red List because of a presumed population decline,
                                                                                                    precipitated by loss of primary forest (Tasirin et al., ).
             Keywords Bogani Nani Wartabone National Park, camera
                                                                                                    There are, however, no recent and reliable population data,
             traps, Macrogalidia musschenbroekii, small carnivore,
                                                                                                    as reflected by the patchy IUCN species range map that
             Sulawesi civet, Tangkoko Nature Reserve, Viverridae,
                                                                                                    depicts four unconnected distribution polygons in various
             Wallacea
                                                                                                    parts of the island, probably a reflection of the low sampling
                                                                                                    effort for this species. Whether this civet is able to survive
                                                                                                    outside primary forest is unknown because of the low survey
             T    he Indonesian island of Sulawesi, located in the
                  Wallacea biodiversity hotspot, has exceptionally high
             levels of endemism. For example, % of its  species of
                                                                                                    effort in other potential habitat types, a matter that applies
                                                                                                    to most of Sulawesi’s mammals. To address this knowledge
                                                                                                    gap, we conducted camera-trap surveys to investigate mam-
                                                                                                    malian assemblages across North Sulawesi province, focus-
             IWAN HUNOWU, ALFONS PATANDUNG, WULAN PUSPARINI (Corresponding author),                 ing on the province’s two main protected areas (Bogani
             ANDI CAHYANA and MATTHEW LINKIE Wildlife Conservation Society, Indonesia               Nani Wartabone National Park, formerly known as Dumo-
             Program, Bogor, 16151, Indonesia. E-mail wpusparini@wcs.org
                                                                                                    ga Bone National Park, and Tangkoko Nature Reserve),
             ISABEL DANISMEND Dobbs Ferry High School, Dobbs Ferry, New York, USA
                                                                                                    and potentially suitable habitat in areas between them.
             SYAHRIL ABDULLAH Bogani Nani Wartabone National Park, North Sulawesi,                  One of our aims was to determine the presence and habitat
             Indonesia
                                                                                                    preferences of the Sulawesi civet across its North Sulawesi
             CASPIAN L. JOHNSON, HARRY HILSER and RIVO RAHASIA Selamatkan Yaki, North
             Sulawesi, Indonesia
                                                                                                    range. Survey data from the National Park buffer zone
                                                                                                    were also collected, to inform a local NGO partner’s land
             RIVO RAHASIA and JENLY GAWINA Balai Konservasi Sumber Daya Alam, North
             Sulawesi, Indonesia                                                                    purchase scheme, which aims to secure unprotected
             Received  December . Revision requested  February .                        biodiversity-rich forest corridors, for which the Sulawesi
             Accepted  June . First published online  December .                        civet is one of several priority species.

                                                                                        Oryx, 2020, 54(6), 878–881 © 2019 Fauna & Flora International doi:10.1017/S0030605319000723
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https://doi.org/10.1017/S0030605319000723
New insights into Sulawesi's apex predator: the Sulawesi civet Macrogalidia musschenbroekii
Sulawesi’s apex predator                879

               Camera traps were employed on a  km grid cell system                             , generating , trap nights over . km from altitudes
           with single cameras, set by four-person teams from the                                 of –, m. Forty-nine camera stations were set in forest
           Wildlife Conservation Society, Selamatkan Yaki, Ministry                               patches between the National Park and Tangkoko Nature
           of Environment and Forestry, and the community. The                                    Reserve during March–July , generating , trap nights
           placement of cameras was systematic random in a checker-                               over  km from altitudes of –, m. Field teams
           board pattern in the National Park and Nature Reserve, and                             checked cameras and retrieved data monthly. Eleven cameras
           random in patches of potentially suitable habitat elsewhere,                           malfunctioned or disappeared and were not included in the
           including in the small Nature Reserve of Gunung Ambang                                 analysis. The data for the Sulawesi civet from the National
           (c.  m). The mean distance between cameras was                                      Park were supplemented by an opportunistic camera trap
            ± SD . km. Reconyx (Holmen, USA), Cuddleback (De                                   record, and subsequent release of a snared individual.
           Pere, USA) or Bushnell (Overland Park, USA) camera traps                                  Camera-trap data were compiled for all civet species,
           were fixed to a tree at c.  cm above ground and – m from                           with time, date and location recorded. ArcGIS . (ESRI,
           trails, without bait, and were continuously active. The land-                          Redlands, USA) was used to construct a geospatial database
           scape included the National Park and its buffer zone, with                             for the camera-trap stations. A land cover map was created
            camera stations set during September –April ,                               using government data for , onto which records of
           generating , trap nights over . km from altitudes                             the Sulawesi and Malay civets were overlain, and species
           of –, m. The entire  km Tangkoko Nature Reserve                               encounter rates were calculated (photographs separated by
           was surveyed with  camera stations set during July–October                           .  minutes per  trap nights).

           TABLE 1 Data collected on the Sulawesi civet Macrogalidia musschenbroekii and Malay civet Viverra tangalunga from Bogani Nani
           Wartabone National Park and Tangkoko Nature Reserve, and from forest patches between them (Fig. ). Asterisks indicate records
           from the same location.

                                                  No. of
                                                  independent          Relation to                                                          Altitude
           Species recorded                       records              protected area              Time                                     (m)           Land-use type
           Bogani Nani Wartabone National Park
           Sulawesi civet                1                             Inside                      05.34                                      454         Secondary forest
             (camera-trap study)         1                             Inside                      03.23                                    1,040         Secondary forest
                                         1                             Inside                      21.55                                      344         Farmland
                                         2                             Inside                      19.10, 01.35                               324         Farmland
                                         2                             Inside                      10.45, 20.55                             1,069         Primary forest
                                         1                             Outside                     04.46                                      253         Primary forest
                                         2                             Outside                     05.33, 19.39                               505         Secondary forest
                                         3                             Outside                     18.23, 05.40, 21.45                        290         Primary forest
           Sulawesi civet                1                             Inside                                                                 452         Secondary forest
             (snared individual)
           Sulawesi civet                1                             Inside                      01.15                                    1,086         Secondary forest
             (opportunistic camera trap)
           Malay civet                   1                             Outside                     21.19                                        21        Farmland
           Tangkoko Nature Reserve
           Sulawesi civet                1                             Inside*                     20.11                                      544*        Farmland*
                                         1                             Inside                      18.19                                      458         Farmland
           Malay civet                   1                             Inside                      00.19                                       74         Secondary forest
                                         1                             Inside                      02.12                                      126         Secondary forest
                                         2                             Inside                      04.27, 19.17                               180         Open land
                                         4                             Inside*                     20.03, 19.06, 19.56, 18.25                 544*        Farmland*
                                         1                             Inside                      20.47                                      575         Secondary forest
           Other forest patches
           Sulawesi civet                1                             Outside                     21.56                                      830         Primary forest
                                         1                             Inside (Gunung              18.16                                    1,515         Secondary forest
                                                                       Ambang Nature
                                                                       Reserve)
           Malay civet                             1                   Outside                     00.28                                      475         Secondary forest
                                                  13                   Outside                     19.25, 19.55, 21.27, 03.33,                904         Secondary forest
                                                                                                   18.49, 19.57, 20.56, 01.10,
                                                                                                   19.09, 19.56, 21.11, 01.21, 23.09

           Oryx, 2020, 54(6), 878–881 © 2019 Fauna & Flora International doi:10.1017/S0030605319000723
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https://doi.org/10.1017/S0030605319000723
880         I. Hunowu et al.

                                                                                                                               FIG. 1 Locations of camera-trap records
                                                                                                                               of the Sulawesi civet Macrogalidia
                                                                                                                               musschenbroekii ( records in 
                                                                                                                               locations) and Malay civet Viverra
                                                                                                                               tangalunga ( records in  locations)
                                                                                                                               in Tangkoko Nature Reserve and Bogani
                                                                                                                               Nani Wartabone National Park, and areas
                                                                                                                               between, including in Gunung Ambang
                                                                                                                               Nature Reserve, North Sulawesi province,
                                                                                                                               Indonesia.

                The high trapping effort but low detection rate for the                             palm civets. Brodie et al. () did not record the Sulawesi
             Sulawesi civet (n = ) yielded a low encounter rate in the                            civet in , camera-trap nights in Tangkoko Nature
             National Park (. records per  trap nights), Tangkoko                             Reserve but did record the Malay civet. Thus the Sulawesi
             Nature Reserve (.) and other forest patches (., includ-                          civet may be rare and/or ground traps set for a semi-arboreal
             ing Gunung Ambang Nature Reserve). Malay civet detections                              civet may have a low detection probability.
             (n = ) yielded a higher encounter rate in the Tangkoko                                   We recorded the Sulawesi civet  times at eight stations
             Nature Reserve (.) and other forest patches (.), than                            in the National Park, and with two opportunistic records
             in the National Park (.). We recorded the Sulawesi civet                            from two locations. These records were from altitudes of
             in more locations () than the Malay civet ().                                       –, m, from primary forest (three of  stations), sec-
                From  camera trap nights, Lee et al. () captured                             ondary forest (/) and farmland (/; Table , Fig. ). From
             three Sulawesi civet images in Southeast Sulawesi province                             the Tangkoko Nature Reserve there were two Sulawesi civet
             (encounter rate = .), but none from Central (,                                  records from farmland (/ stations),  and  m from for-
             camera-trap nights and  km of transect surveys) or                                  est, including one recorded at the same station as a Malay
             North Sulawesi province (, trap nights and  km).                                civet. Our study is the first to confirm the presence of the
             Additionally, they recorded one Malay civet and no common                              Sulawesi civet with photographic records in both Bogani

                                                                                                                               PLATE 1 Camera-trapped (a) Sulawesi civet
                                                                                                                               Macrogalidia musschenbroekii in primary
                                                                                                                               forest in Bogani Nani Wartabone National
                                                                                                                               Park, showing its characteristic striped tail
                                                                                                                               (February ), and (b) Malay civet
                                                                                                                               Viverra tangalunga (August ) in
                                                                                                                               Tangkoko Natural Reserve, and (c) snared
                                                                                                                               Sulawesi civet found by a National Park
                                                                                                                               ranger patrol team (March ), and
                                                                                                                               (d) examples of bushmeat seen at a
                                                                                                                               road-block patrol for monitoring wildlife
                                                                                                                               trade in Maelang (from left to right
                                                                                                                               Sulawesi civet, black-crested macaque
                                                                                                                               Macaca nigra and babirusa Babyrousa
                                                                                                                               celebensis) in .

                                                                                        Oryx, 2020, 54(6), 878–881 © 2019 Fauna & Flora International doi:10.1017/S0030605319000723
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https://doi.org/10.1017/S0030605319000723
Sulawesi’s apex predator                  881

           Nani Wartabone National Park and Tangkoko Nature                                       Enhancing the Protected Area System in Sulawesi for supporting
           Reserve (previous records were from tracks and scats).                                 various parts of this work, and Jedediah Brodie for lending us camera
                                                                                                  traps.
           Amongst the other forest patches surveyed, the Sulawesi
           civet was recorded in primary (/) and secondary forest                              Author contributions Study design: WP, IH, CJ, HH, ML; field-
           (/) inside Gunung Ambang Nature Reserve, and the                                    work: AP, CJ, RR; data analysis: AP, AC; writing: WP, ID, ML, IH, CJ.
           Malay civet from secondary forest (/) and open land (/).
               Despite the relatively low number of records, our data re-                         Conflicts of interest None.
           veal diverse habitat use by the Sulawesi civet (Wemmer &
                                                                                                  Ethical standards The research involved no human subjects, experi-
           Watling, ; Plate ) and concur with Lee et al.’s ()                            mentation with animals and/or collection of specimens, and otherwise
           observation that the species is not restricted by elevation                            abided by the Oryx guidelines on ethical standards.
           or forest disturbance. Our results showed widespread pres-
           ence of the Sulawesi civet in Bogani Nani Wartabone
           National Park, with the single Malay civet record from a                               References
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           Oryx, 2020, 54(6), 878–881 © 2019 Fauna & Flora International doi:10.1017/S0030605319000723
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https://doi.org/10.1017/S0030605319000723
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