Sekelompok Monyet Panama Masuki Zaman Batu

BERITA RAKYAT– Para peneliti menemukan kejutan luar biasa di panama. Sekelompok monyet capuchin berkepala putih (Cebus capunicus) beru saja memasuki Zaman Batu seperti leluhur kita dulu.

Mereka menjadi spesies pertama di dalam genusnya dan primata no-manusia keempat yang menggunakan alat-alat batu untuk memecah kelapa, kacang-kacangan dan hewan laut bercangkang, mulai dari siput sampai kepiting.

Temuan ini membuat para peneliti merasa gatal untuk mengetahui apa yang menyebabkan sebuah spesies memasuki zaman batu, yang mungkin akan menjelaskan bagaimana dan mengapa leluhur kita mulai menggunakan alat-alat dari batusekitar 2 juta tahun yang lalu.

Menarinya, seperti  yang silaporkan dalam makalah diBioArXiv, hanya monyet-monyet yang hidup dalam jarak 1,6 kilometer di persisir Jicaron, sebuah pulau kecil di lepas pantai panama yang merupakan bagian dari Taman Nasional Coiba, yang menggunakan alat-alat daribaru.

hal ini membuat peneliti utama, Brenden barett dari Max Plack Institute for Omithology, bertanya-tanya. Mengapa perilaku ini tidak menyebar ke seluruh Jicalon? Dan, apa yang spesial dari kelompok ini?

Para peneliti punya beberapa dugaan. salah satunya mungkin ada individu yang lebih pintar mulai menggunakan alat untuk meningkatkan ketahan hidupnya, dan pelaku ini menyebar di kelompoknya.

Akan ada tetapi, semakin para peneliti menyelidiki, semakin banyak pertanyaan baru yang juga muncul.Soal enis kelamin, misalnya para penelti mendapati bahwa hanya pejantan saja yang menggunakan alat-alat dari batu, meskipun betina-betina berkeliaran di sekitar mereka dan mengumpulkan makanan.

Jika melihat bagaimana pejatan yang masih anak-anak saja bisa memegang dan menggunakan alat, maka persoalannya bukan karena ukuran betina yang lebih kecil daripada pejantan.

Untuk itu,para peneliti berharap untuk dapat melakukan penelitian dan observasi lebih lanjt untuk mempelajari kelompok ini.

(AL)

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