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Preliminary report on the occurrence of lethal crustose (non-geniculate) coralline algae white band and white patch diseases in the coral reefs of Gulf of Kachchh, India

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Title Preliminary report on the occurrence of lethal crustose (non-geniculate) coralline algae white band and white patch diseases in the coral reefs of Gulf of Kachchh, India
 
Creator Bharath, M S
Chandran, R
Senthilkumaran, R
Ramkumaran, K
Thanappan, V P P
Chaudhury, N R
Palanisamy, M
Rajan, R
Satyanarayana, C
 
Subject Coralline algae
Growth forms
Gulf of Kachchh
White band disease
White patch disease
 
Description 255-260
This is the first report on Crustose (non-geniculate) Coralline Algae (CCA) diseases in the Gulf of Kachchh, Western
India. The observation of CCA diseases was conducted in the intertidal reefs of Narara coast during August to November
2021. Two CCA diseases were identified: CCA white band disease and CCA white patch disease. Five sites were selected
along the Narara intertidal reef; each site covering 200 m² area with 5 belt transects. CCA colonies intercepted within the
transects were identified based on their growth form, and lesions were counted and recorded. CCA were classified into six
different growth forms: encrusting, fruticose, foliose, layered, lumpy, and warty. A total of 704 CCA colonies were
encountered, of which 18±2.9 % (n = 127) were identified with white band disease and 6±1.9 % (n = 42) were identified
with CCA white patch disease. The encrusting growth form was predominantly affected by both CCA white band and white
patch disease. CCA white band disease causes tissue loss, typically resulting in the death of CCA, subsequently colonized
by endophytic green algae; whereas algal colonization was absent in the white patches. CCA white band disease was
observed with a high frequency of disease occurrence (FOC) at 80 %, and white patch disease at 44 %. The spatial
distribution patterns of CCA white band disease (χ² = 30.03; p < 0.00001) and CCA white patch disease (χ² = 7.98;
p < 0.005) significantly differed among the growth forms of coralline algae. Present account provides baseline information
on CCA growth form density and CCA disease, which would be valuable for future investigations.
 
Date 2024-02-27T06:49:39Z
2024-02-27T06:49:39Z
2024-02
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscpr.res.in/handle/123456789/63457
https://doi.org/10.56042/ijms.v52i05.8010
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJMS Vol.52(05) [May 2023]