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Jumat, 22 Juni 2012

Adu Kepala Bumphead Bolbometopon muricatum

Jurnal KeSimpulan.com - Ritual adu kepala raksasa terumbu karang Bumphead Parrotfish (Bolbometopon muricatum) untuk merebutkan kencan perempuan.

Novel lain epik seleksi seksual Charles Darwin dari laut. Pertama kali dokumentasi penampakan serudukan perilaku Bumphead Parrotfish (Bolbometopon muricatum) selama kompetisi seksual. Penyusup dengan alasan kawin belajar kehidupan keras.

Ikan karang menangkis laki-laki pesaing yang mencoba menyusup menggunakan serudukan kepala agresif.

Bentuk perilaku yang belum pernah terlihat pada spesies habitat karang yang ganas.

Tumbuh dengan berat lebih dari 75 kilogram dan panjang 1,5 meter, raksasa kepala baja salah satu ikan karang paling prima di dunia.

"Mereka benar-benar kerbau bawah air, raksasa lemban yang memainkan peran penting dalam ekologi terumbu karang. Tapi ketika reproduksi saatnya untuk berjuang," kata David Bellwood, oseanografer James Cook University di Townsville, Australia.

Dahi menjadi punggung menonjol. Laki-laki diperkuat pelat bertulang tebal. Mereka makan 5 ton karang dalam 1 tahun. Para ilmuwan lama berpikir Bolbometopon muricatum menggunakan baju besi untuk bertempur tapi tak seorang pun pernah melihat mereka melakukannya.

Roldan Muñoz, biooseanografer US National Marine Fisheries Service di Beaufort, North Carolina, dan tim menemukan secara kebetulan ketika mengamati perilaku kawin Bolbometopon muricatum di terumbu Atoll Wake. Pulau terpencil di Pasifik bekas fasilitas rudal AS yang terlarang bagi pengunjung.

"Kami bingung berada di air, cahaya rendah dan semua tiba-tiba terdengar 'pow-pow'. Letusan speargun di dekatnya. Kami datang, mereka seperti domba Bighorn," kata Muñoz.

Mamalia domba Bighorn dan rusa merah menggunakan tanduk sebagai seleksi seksual dan berhak mengencani perempuan. Jika demikian evolusi kepala mengambil tempat, laki-laki berkepala keras harus sering terpilih kawin dengan perempuan. Ini pertanyaan yang perlu dijawab.
Extraordinary Aggressive Behavior from the Giant Coral Reef Fish, Bolbometopon muricatum, in a Remote Marine Reserve

Roldan C. Muñoz1, Brian J. Zgliczynski2, Joseph L. Laughlin3, Bradford Z. Teer1
  1. National Marine Fisheries Service, Beaufort Laboratory, National Oceanic and Atmospheric Administration, Beaufort, North Carolina, United States of America
  2. Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, California, United States of America
  3. Mariculture Hawaii LLC, Ashland, Oregon, United States of America
PLoS ONE 7(6): e38120, June 6, 2012

Akses : DOI:10.1371/journal.pone.0038120
Video : NatureNewsteam

1 komentar :

  1. makasih banyak informasinya
    kira kira di dasr laut sana masih ada gak yah yag kya gtu

    BalasHapus