Presence of coral-killing sponges in Okinawan mesophotic coral ecosystems DOI
Ritzelle L. Albelda, Frédéric Sinniger,

Yuji Ise

et al.

Bulletin of Marine Science, Journal Year: 2024, Volume and Issue: 100(3), P. 503 - 518

Published: April 13, 2024

Shallow reefs worldwide are degrading due to multiple threats. Mesophotic coral ecosystems (MCEs; 30– 150 m depth) have been investigated for their diversity and potential serve as a refuge re-seed shallow reefs. However, recent studies showed that MCEs also disturbed by various factors, including diseases, pollution, storms, thermal-induced bleaching. Among the disturbances, coral-killing sponges known decimate many Indo-Pacific but rarely reported at mesophotic depths. Here, we report first comprehensive assessment of Chalinula nematifera (de Laubenfels, 1954) Terpios hoshinota Rützler Muzik, 1993 in MCEs. Specifically, (1) prevalence, (2) sponge-affected corals, (3) coral-sponge interaction types 40 depth Okinawa, southern Japan. We found C. T. were present low prevalences, with highest mean cover 3.8% 1.8%, respectively. Although both species appeared be substrate- generalists, they mainly affected dominant taxa, such branching corals Acropora tenella Seriatopora sp. Both interacted overgrowth, followed tissue peripheral contact. Due lack prior knowledge, it is unclear whether current observation captured expansion, decline, or steady state Okinawan Thus, this study provides unprecedented insights about depths which highlights need monitor more globally, prioritizing regions already threatened these sponges.

Language: Английский

Sponge abundance and diversity patterns in the shallow and mesophotic reefs of the northern Red Sea DOI Creative Commons
Lilach Raijman-Nagar, Liron Goren,

Sigal Shefer

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: April 30, 2024

Accumulating data on the increasing degradation of coral reefs worldwide has led to a focus unique mesophotic ecosystem (MCE) as potential refuge for threatened shallow-water species (i.e., deep reef refugia hypothesis: DRRH). Sponges play crucial role in coral-reef functioning but are often overlooked benthic surveys. This knowledge gap is especially true Red Sea, where sponge abundance, coverage and composition scarce. Furthermore, date, no study examined sponges Sea. Here we compared abundance diversity metrics between shallow at two sites Gulf Aqaba, northern We also biotic abiotic parameters determining variability depths. Sponge significantly varied with depth sites. differed However, measured water column, that is, Total Organic Carbon (TOC), Particulate (POC), NOx, etc., did not differ depths sites, except Synechococcus Prochlorococcus concentration, which did. The findings indicated site characteristics interactions may an essential community composition. Between-site differences fauna revealed highlight importance considering communities factors controlling it when designing management tools reefs, particularly

Language: Английский

Citations

3
Exploring the microorganisms biodiversity associated with sponge species in the red sea through 18S ribosomal RNA gene sequencing DOI Creative Commons
Samah Sulaiman Abuzahrah

AMB Express, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 2, 2025

Language: Английский

Citations

0
Warm‐adapted sponges resist thermal stress by reallocating carbon and nitrogen resources from cell turnover to somatic growth DOI Creative Commons
Federica Maggioni, Patrick Raimbault, Olivier Château

et al.

Limnology and Oceanography, Journal Year: 2024, Volume and Issue: 69(4), P. 976 - 991

Published: March 6, 2024

Abstract Ocean warming will affect the functioning of coral reef ecosystems with unknown cascading effects. Any perturbation in ability sponges to recycle dissolved organic matter released by primary producers and make it available higher trophic levels, might have consequences for chain. Biogeochemical processes were measured sponge Rhabdastrella globostellata from semi‐enclosed lagoon Bouraké, where temperatures reach 33.8°C fluctuates 6.5°C on a daily basis, control (28°C). Using 13 C‐ 15 N‐labeled mucus, we experimentally investigated what extent high temperature affected carbon (C) nitrogen (N) resources allocation tissue detritus. Sponges Bouraké maintained at 32°C incorporated more mucus showed less detritus release when compared 28°C. In contrast, lower incorporation Our results suggest that adapted extreme able reallocate C N cell turnover somatic growth reduce damage. non‐adapted lack this mechanism underwent disintegration, highlighting lethal effect future warming. The change suggests potential adaptation allows R. survive under thermal stress, but could alter availability essential sources energy interactions.

Language: Английский

Citations

1
Presence of coral-killing sponges in Okinawan mesophotic coral ecosystems DOI
Ritzelle L. Albelda, Frédéric Sinniger,

Yuji Ise

et al.

Bulletin of Marine Science, Journal Year: 2024, Volume and Issue: 100(3), P. 503 - 518

Published: April 13, 2024

Shallow reefs worldwide are degrading due to multiple threats. Mesophotic coral ecosystems (MCEs; 30– 150 m depth) have been investigated for their diversity and potential serve as a refuge re-seed shallow reefs. However, recent studies showed that MCEs also disturbed by various factors, including diseases, pollution, storms, thermal-induced bleaching. Among the disturbances, coral-killing sponges known decimate many Indo-Pacific but rarely reported at mesophotic depths. Here, we report first comprehensive assessment of Chalinula nematifera (de Laubenfels, 1954) Terpios hoshinota Rützler Muzik, 1993 in MCEs. Specifically, (1) prevalence, (2) sponge-affected corals, (3) coral-sponge interaction types 40 depth Okinawa, southern Japan. We found C. T. were present low prevalences, with highest mean cover 3.8% 1.8%, respectively. Although both species appeared be substrate- generalists, they mainly affected dominant taxa, such branching corals Acropora tenella Seriatopora sp. Both interacted overgrowth, followed tissue peripheral contact. Due lack prior knowledge, it is unclear whether current observation captured expansion, decline, or steady state Okinawan Thus, this study provides unprecedented insights about depths which highlights need monitor more globally, prioritizing regions already threatened these sponges.

Language: Английский

Citations

0