Contemporary white-band disease in Caribbean corals driven by climate change

2015 ◽  
Vol 5 (4) ◽  
pp. 375-379 ◽  
Author(s):  
C. J. Randall ◽  
R. van Woesik
Keyword(s):  
Climate Change ◽  
White Band ◽  
White Band Disease

scholarly journals Experimental antibiotic treatment identifies potential pathogens of white band disease in the endangered Caribbean coral Acropora cervicornis

2014 ◽  
Vol 281 (1788) ◽  
pp. 20140094 ◽  
Author(s):  
M. J. Sweet ◽  
A. Croquer ◽  
J. C. Bythell
Keyword(s):  
Coral Disease ◽  
Causal Agent ◽  
Acropora Palmata ◽  
Acropora Cervicornis ◽  
Coral Diseases ◽  
White Band ◽  
Disease Causation ◽  
Community Shifts ◽  
White Band Disease ◽  
Experimental Treatments

Coral diseases have been increasingly reported over the past few decades and are a major contributor to coral decline worldwide. The Caribbean, in particular, has been noted as a hotspot for coral disease, and the aptly named white syndromes have caused the decline of the dominant reef building corals throughout their range. White band disease (WBD) has been implicated in the dramatic loss of Acropora cervicornis and Acropora palmata since the 1970s, resulting in both species being listed as critically endangered on the International Union for Conservation of Nature Red list. The causal agent of WBD remains unknown, although recent studies based on challenge experiments with filtrate from infected hosts concluded that the disease is probably caused by bacteria. Here, we report an experiment using four different antibiotic treatments, targeting different members of the disease-associated microbial community. Two antibiotics, ampicillin and paromomycin, arrested the disease completely, and by comparing with community shifts brought about by treatments that did not arrest the disease, we have identified the likely candidate causal agent or agents of WBD. Our interpretation of the experimental treatments is that one or a combination of up to three specific bacterial types, detected consistently in diseased corals but not detectable in healthy corals, are likely causal agents of WBD. In addition, a histophagous ciliate ( Philaster lucinda ) identical to that found consistently in association with white syndrome in Indo-Pacific acroporas was also consistently detected in all WBD samples and absent in healthy coral. Treatment with metronidazole reduced it to below detection limits, but did not arrest the disease. However, the microscopic disease signs changed, suggesting a secondary role in disease causation for this ciliate. In future studies to identify a causal agent of WBD via tests of Henle–Koch's postulates, it will be vital to experimentally control for populations of the other potential pathogens identified in this study.

PREVALENSI DAN KELIMPAHAN PENYAKIT KARANG DI PERAIRAN DESA BUTON KABUPATEN MOROWALI SULAWESI TENGAH

2021 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Ayu Safitri ◽  
Ratna Diyah Palupi ◽  
. Rahmadani
Keyword(s):  
White Spot ◽  
Black Band Disease ◽  
White Band ◽  
Brown Band ◽  
Black Band ◽  
Belt Transect ◽  
White Band Disease ◽  
Brown Band Disease

Penyakit karang sekarang ini sudah menjadi perhatian utama para peneliti karang. Banyak kasus dilaporkan penyakit karang menjadi penyumbang terbesar kematian karang di sebuah perairan. Penelitian ini bertujuan untuk mengetahui prevalensi dan kelimpahan penyakit karang di Perairan Desa Buton, Kabupaten Morowali, Sulawesi Tengah. Metode pengambilan data prevalensi dan kelimpahan penyakit karang menggunkan belt transect (transek sabuk) dengan luas 180m2 yang ditarik sejajar garis pantai pada 3 (tiga) titik stasiun. Hasil penelitian menunjukan ditemukan sebanyak 5 (lima) jenis penyakit karang (White Band Disease, Brown Band Disease, Ulcerative White Spot, Bleaching, dan Black Band Disease dan 3 (tiga) jenis gangguan kesehatan karang (Fish bites, Crown-of-Thorn-Starfish (COTS), dan Tube formers). Secara umum total prevalensi penyakit karang di lokasi penelitian sebesar 78,7% (52,3% penyakit karang dan 26,4% berupa gangguan kesehatan karang) dengan kasus tertinggi terdapat di stasiun 1 (satu). lebih lanjut kelimpahan rata-rata penyakit karang sebesar 0,65 koloni/m2. Kelimpahan penyakit karang tertinggi ditemukan pada stasiun I yaitu sebesar 0,32 koloni/m2.Kata Kunci: Penyakit Karang, Prevalensi, Kelimpahan, Perairan Desa Buton

Possible causal agent of “white band disease” in caribbean acroporid corals

1983 ◽  
Vol 41 (3) ◽  
pp. 394-396 ◽  
Author(s):  
Esther C. Peters ◽  
John J. Oprandy ◽  
Paul P. Yevich
Keyword(s):  
Causal Agent ◽  
White Band ◽  
White Band Disease

scholarly journals KELIMPAHAN DAN PREVALENSI PENYAKIT KARANG DI PERAIRAN LANGARA, KONAWA KEPULAUAN, SULAWESI TENGGARA

2019 ◽  
Vol 4 (2) ◽  
pp. 99
Author(s):  
Siti Hasma ◽  
Baru Sadarun ◽  
Ratna Diyah Palupi
Keyword(s):  
Black Band Disease ◽  
Yellow Band ◽  
Growth Anomalies ◽  
White Spots ◽  
White Band ◽  
Black Band ◽  
Belt Transect ◽  
Yellow Band Disease ◽  
White Band Disease

Penyakit karang adalah gangguan terhadap kesehatan karang yang menyebabkan hilang atau rusaknya jaringan karang. Biota karang yang terinfeksi penyakit telah diidentifikasikan sebagai salah satu faktor utama yang memperburuk tutupan terumbu karang secara global. Tujuan dari penelitian ini untuk mengetahui kelimpahan dan prevalensi penyakit karang di Perairan Langara, Konawe Kepulauan, Sulawesi Tenggara. Pengambilan data dilakukan di bulan April 2018 pada tiga stasiun penelitian. Metode pengambilan data kelimpahan dan prevalensi penyakit karang menggunakan metode belt transect (transek sabuk) dengan luas area transek 350 m2, yang ditarik sejajar garis pantai. Hasil penelitian menyebutkan bahwa penyakit karang yang ditemukan di lokasi penelitian sebanyak 8 jenis [Black Band Disease (BBD), Dark Spots Disease (DSD), Ulcerative White Spots (UWS), White Band Disease (WBD), Explained Growth Anomalies (EGA), White Syndrom (WS), Bleacing (BL) dan Yellow Band Disease (YBD)]. Kelimpahan dan prevalensi penyakit karang yang tertinggi terdapat di stasiun II, dimana nilai kelimpahan yaitu 0.063 koloni/m2 dan nilai prevalensi yaitu 92.187%. Jenis penyakit karang yang mendominasi di lokasi penelitian secara berturut-turut adalah UWS, BBD dan WS.Kata Kunci: Kelimpahan; Penyakit Karang; Perairan Langara; Prevalensi

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