STATUS AND RECOMMENDATIONS FOR IN SITU ANOA (Bubalus sp.) WITH SUGGESTED IMPLICATIONS FOR THE CONSERVATION BREEDING POPULATION (Status dan Rekomendasi Anoa (Bubalus sp.) In Situ dengan Implikasi untuk Konservasi Populasi Berbiak)

Ringkasan ini menguraikan status konservasi in situ kerbau kerdil Sulawesi. Trend populasi yang dilaporkan dalam dua belas tahun terakhir mengarahkan penulis dalam menyoroti arti penting konservasi populasi berbiak di lokasi ex situ pada masa mendatang. Anoa terdiri dari dua jenis kerbau kerdil Bubalus depressicornis & B. quarlesi endemik Pulau Sulawesi, Indonesia. Kajian distribusi anoa berdasarkan laporan historis dan sebagai hasil data lapang terbaru (1990-an sampai 2002) menyoroti terjadinya penurunan di keseluruhan pulau, terutama di semenanjung selatan dan timur laut. Penurunan terjadi akibat perburuan lokal untuk daging dan kehilangan habitat. Sebagian besar populasi secara cepat mengalami fragmentasi. Konservasi populasi viable pada akhirnya akan membutuhkan pengelolaan metapopulasi dan peran yang lebih besar dari populasi di kebun binatang.Kata Kunci: in situ, anoa, konservasi, populasi berbiak

Synchronous diversification of Sulawesi's iconic artiodactyls driven by recent geological events

The high degree of endemism on Sulawesi has previously been suggested to have vicariant origins, dating back to 40 Ma. Recent studies, however, suggest that much of Sulawesi's fauna assembled over the last 15 Myr. Here, we test the hypothesis that more recent uplift of previously submerged portions of land on Sulawesi promoted diversification and that much of its faunal assemblage is much younger than the island itself. To do so, we combined palaeogeographical reconstructions with genetic and morphometric datasets derived from Sulawesi's three largest mammals: the babirusa, anoa and Sulawesi warty pig. Our results indicate that although these species most likely colonized the area that is now Sulawesi at different times (14 Ma to 2-3 Ma), they experienced an almost synchronous expansion from the central part of the island. Geological reconstructions indicate that this area was above sea level for most of the last 4 Myr, unlike most parts of the island. We conclude that emergence of land on Sulawesi (approx. 1-2 Myr) may have allowed species to expand synchronously. Altogether, our results indicate that the establishment of the highly endemic faunal assemblage on Sulawesi was driven by geological events over the last few million years

Synchronous diversification of Sulawesi's iconic artiodactyls driven by recent geological events

The high degree of endemism on Sulawesi has previously been suggested to have vicariant origins, dating back to 40 Ma. Recent studies, however, suggest that much of Sulawesi's fauna assembled over the last 15 Myr. Here, we test the hypothesis that more recent uplift of previously submerged portions of land on Sulawesi promoted diversification and that much of its faunal assemblage is much younger than the island itself. To do so, we combined palaeogeographical reconstructions with genetic and morphometric datasets derived from Sulawesi's three largest mammals: the babirusa, anoa and Sulawesi warty pig. Our results indicate that although these species most likely colonized the area that is now Sulawesi at different times (14 Ma to 2-3 Ma), they experienced an almost synchronous expansion from the central part of the island. Geological reconstructions indicate that this area was above sea level for most of the last 4 Myr, unlike most parts of the island. We conclude that emergence of land on Sulawesi (approx. 1-2 Myr) may have allowed species to expand synchronously. Altogether, our results indicate that the establishment of the highly endemic faunal assemblage on Sulawesi was driven by geological events over the last few million years