POPULASI KUPU-KUPU (LEPIDOPTERA ) DI PULAU MANTEHAGE, SULAWESI UTARA ABSTRAK Kupu-kupu berperan penting dalam ekosistem dan dapat membantu proses penyerbukan pada tumbuhan. Penelitian ini bertujuan untuk mengkaji populasi kupu-kupu di Pulau Mantehage, Sulawesi Utara. Pengambilan sampel kupu-kupu dilakukan dari Maret sampai Mei 2013 di Pulau Mantehage, Sulawesi Utara. Kupu-kupu dikoleksi dengan menggunakan metode sweeping yang diterapkan secara acak sepanjang 500m. Hasil penelitian menunjukkan bahwa kupu-kupu di Pulau Mantehage ada 19 spesies yang termasuk ke dalam 4 famili yaitu Nymphalidae, Papilionidae, Pieridae dan Riodinidae. Spesies kupu-kupu yang paling banyak ditemukan yaitu Catopsilia scylla asema. Famili yang paling banyak ditemukan yaitu Famili Nymphalidae dengan jumlah spesies sebanyak 11 spesies. Kupu-kupu yang paling sedikit yaitu Famili Riodinidae yang memiliki jumlah satu spesies. Kata kunci : Populasi kupu-kupu, Pulau Mantehage, Sulawesi Utara. POPULATION OF BUTTERFLY (LEPIDOPTERA) IN MANTEHAGE ISLAND, NORTH SULAWESI ABSTRACT Butterfly has ecological functions for pollination and as biodicator of ecosystem change. This study was conducted for studying butterfly population in Mantehage Island, North Sulawesi. Butterfly sampling conducted in March until May 2013 in Mantehage island, North Sulawesi. Butterfly were collected by using random sweeping along 500 m. The result showed there were 19 species in 4 families i.e. Nymphalidae, Papilionidae, Pieridae dan Riodinidae. The most commonly butterfly found was Catopsilia scylla asema. The most common family was Nymphalidae with numbers of species were 11 species. The least family was Riodinidae with only 1 species. Keywords: Butterfly population, Mantehage Island, North Sulawesi.
Keanekaragaman fauna banyak ditemukan di ekosistem pesisir. Salah satu Filum yang memiliki daya tarik tersendiri di lingkungan pesisir yaitu Echinodermata. Berdasarkan informasi dan data yang diperoleh, di Pantai Basaan Satu Kecamatan Ratatotok Sulawesi Utara belum pernah ada penelitian Echinodermata sebelumnya. Pengambilan sampel menggunakan metode Purposive Random Sampling dan metode kuadrat. Hasil Penelitian didapatkan 13 spesies Echinodermata yaitu kelas Asteroidea diwakili oleh Linckia laevigata, Protoreaster nodosus dan Nardoa tuberculata. Ophiomastix annulosa termasuk pada kelas Ophiuroidea. Kelas Echinoidea diwakili oleh Diadema setosum, Tripneustes gratilla, Echinometra mathaei, Echinothrix diadema dan Echinothrix calamaris. Kelas Holothuroidea diwakili oleh Synapta maculata, Holothuria atra, Holothuria scabra dan Bohadschia marmmota. Indeks keanekaragaman Echinodermata sedang ditemukan pada habitat mangrove yaitu H'=1,21 dan habitat terumbu karang H'=1,97, sedangkan pada habitat padang lamun indeks keanekaragamannya rendah dengan H'=0,88.The animal diversity can be found in beach-side ecosystem. One of animal phylum wich has its own uniqueness is Echinoderms. According to the information and data, in Basaan Satu beach, Ratatotok district, North Sulawesi, there’s no research related to Echinoderms has been done there yet. Method used in sampling was Purposive Random Sampling and square method. In this research, 13 species of Echinoderms were found. They are Linckia laevigata, Protoreaster nodosus and Nardoa tuberculata from Asteroidea class. Ophiomastix annulosa from Ophiuroidea class. Diadema setosum, Tripneustes gratilla, Echinometra mathaei, Echinothrix diadema and Echinothrix calamaris from Echinoidea class. Synapta maculata, Holothuria atra, Holothuria scabra and Bohadschia marmmota from Holothuroidea class. Diversity index of Echinoderms in mangrove habitat and coral habitat are moderate (H'=1,21 and H'=1,97, respectively), while in seagrass habitat it is low (H'=0,88).
Lamun adalah tumbuhan berbunga yang dapat tumbuh dengan baik pada lingkungan laut dangkal. Penelitian ini dilaksanakan di Pesisir Desa Lihunu dengan menggunakan metode purposive random sampling yang dilaksanakan pada bulan Agustus 2015 saat surut terendah. Analisis data meliputi perhitungan dengan menggunakan rumus menurut Shannon & Wienner dan buku identifikasi lamun. Berdasarkan hasil penelitian terdapat tujuh jenis lamun yang ditemukan yaitu, Enhalus acoroides (L.f.) Royle, Thalassia hemprichii (Ehrenberg) Ascherson, Cymodocea rotundata (Ehrenberg) Ascherson, Cymodocea serrulata (R. Brown) Ascherson, Halophila ovalis (R. Brwon) Hooker, Halodule pinifolia (Miki) den Hartog dan Syringodium isoetifolium (Ascherson) Dandy. Lamun Enhalus acoroides dan Thalassia hemprichii memiliki penyebaran terluas, karena ditemukan di seluruh transek pada lokasi penelitian. Jenis yang jarang dijumpai adalah Halophila ovalis dan Cymodocea serrulata. Jumlah individu lamun yang ditemukan adalah 2316 individu. Nilai indeks keanekaragaman di Pesisir Desa Lihunu memperlihatkan bahwa di wilayah ini keanekaragaman jenis lamun sedang dengan H’ = 1 ≤ H’ ≤ 3.Seagrass is flowering plants that can grow so well in shallow marine environments. This research was conducted in Seashore Lihunu Village on August 2015 using field observation with purposive random sampling when low withdraw. Data analysis was performed using the formula of Shannon-Wienner and identification of seagrass. Results obtained in this research showed that there are seven types of seagrass, namely Enhalus acoroides (L.f) Royle, Thalassia hemprichii (Ehrenberg) Ascherson, Cymodocea rotundata (Ehrenberg) Ascherson, Cymodocea serrulata (R. Brown) Ascherson, Halophila ovalis (R. Brwon) Hooker, Halodule pinifolia (Miki) den Hartog and Syringodium isoetifolium (Ascherson) Dandy. Enhalus acoroides and Thalassia hemprichii have wide distribution because they can be found in all transect line at research site. Species that are rarely found are Halophila ovalis and Cymodocea serrulata. Number of individual found was 2316 individuals. Value of diversity index at Seashore Lihunu Village showed that this area has moderate seagrass diversity with H’ = 1 ≤ H’ ≤ 3.
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