Detrimental conditions affecting Xestospongia muta across shallow and mesophotic coral reefs off the southwest coast of Puerto Rico
Autor: | Nikolaos V. Schizas, Clark Sherman, J E García-Hernández, Ernesto Weil, E Tuohy, D A Toledo-Rodríguez |
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Rok vydání: | 2021 |
Předmět: |
geography
geography.geographical_feature_category biology Coral Reefs Puerto Rico Marine reserve Biodiversity Zoology Coral reef Aquatic Science Anthozoa biology.organism_classification medicine.disease Xestospongia Sponge Benthic zone medicine Animals Giant barrel sponge Ecosystem Ecology Evolution Behavior and Systematics Epizootic Panzootic |
Zdroj: | Diseases of Aquatic Organisms. 147:47-61 |
ISSN: | 1616-1580 0177-5103 |
DOI: | 10.3354/dao03633 |
Popis: | Sponges are fundamental components of coral reef communities and, unfortunately, like other major benthic members, they too have been impacted by epizootic and panzootic events. We report on the prevalence of disease-like conditions affecting populations of the giant barrel sponge Xestospongia muta across shallow and mesophotic coral reefs off La Parguera Natural Reserve (LPNR) and Mona Island Marine Reserve (MIMR) in Puerto Rico. Four different conditions affecting X. muta were observed during our surveys, of which 3 have been previously reported: cyclic spotted bleaching (CSB; apparently non-lethal), Xestospongia-tissue wasting disease (X-TWD; apparently lethal), and sponge orange band disease (SOB; sparsely associated with X-TWD infected individuals). Additionally, we describe a fourth condition, Xestospongia-tissue hardening condition (X-THC), a previously unreported disease recently observed along the insular shelf margin off LPNR and MIMR. Within LPNR, a total of 764 specimens of X. muta were inspected and measured. Of these, 590 sponges (72.2%) had CSB, 25 (3.27%) had signs of X-TWD, 7 (0.92%) had SOB, and the remaining 142 (18.6%) were apparently healthy. Three colonies inhabiting upper mesophotic depths on the LPNR insular shelf showed signs of CSB and X-TWD. At MIMR, video-transect surveys revealed a total of 514 colonies, of which 40 (7.78%) had signs of CSB and/or XTWD, 14 (2.72%) were affected by X-THC, while the remaining 460 (89.5%) showed no external signs of disease and appeared healthy. The presence of 4 concomitant disease-like conditions in barrel sponges of Puerto Rico is alarming, and indicative of the deteriorating status of Caribbean coral reefs. |
Databáze: | OpenAIRE |
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