Karakter Morfologi Fungiasp. Di Pulau Mamburit,Kabupaten Sumenep, Jawa Timur, Indonesia

Fungia sp. merupakan genus dari famili Fungiidae yang sebagian besar terumbu karang soliter, melekat dan hidup bebas, serta dapat berpindah ke tempat lain. Tujuan penelitian ini adalah menganalisis karakter morfologi jamur Fungia sp. yang ditemukan di Pulau Mamburit, Kabupaten Sumenep, Jawa Timur, Indonesia. Metode survei diperoleh dalam penelitian ini dengan cara random sampling. Jumlah sampel dilakukan dua spesies berbeda dengan dua kali pengulangan di setiap stasiun. Stasiun yang dipilih dalam penelitian ini adalah Leeward I, Leeward II, Windward I, Windward II. Data dianalisis secara deskriptif. Berdasarkan pengulangan, terumbu karang yang dipilih memiliki kemiripan yang besar dengan karakteristik morfologi di semua stasiun pengambilan sampel. Jamur Fungia (karang kelompok "a") dan Fungia scutaria (karang kelompok "b") adalah jenis spesiesFungia sp. yang diperoleh dari hasil analisis prediksi morfologi karang.

Potential bleaching effects on coral reproduction

Bleaching profoundly impacts coral reproduction, often for years after an event. However, detailed reproductive characteristics of coral after bleaching have not been broadly described, especially as they relate to cryopreservation. Therefore, in the present study we measured several reproductive characteristics in coral in Kaneohe Bay, Hawaii, for two species, namely Fungia scutaria and Montipora capitata, during the bleaching period of 2014 and 2015. We examined spawning periods, egg morphometry, sperm concentration, fresh and cryopreserved sperm motility exposed to different concentrations of dimethyl sulfoxide, time of first cleavage, larval survival with fresh and cryopreserved spermatozoa, infection success and settlement success. Many of these reproductive parameters were reduced in 2015, especially sperm motility. Once the reduced-motility spermatozoa from 2015 post-bleach were cryopreserved, there was a steep decline in post-thaw viability and this would prevent any substantive further use of these samples in reproduction for conservation benefit. Worldwide, as bleaching events become more frequent, the ability to bank and conserve coral ex situ may be significantly reduced. Thus, it is imperative that while genetic diversity is still high in these populations, intensive efforts are made to bank coral species during non-bleaching periods.