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Keywords = Sanderia malayensis

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18 pages, 5036 KiB  
Article
The Effects of Salinity on the Growth, Survival, and Feeding of Sanderia malayensis (Cnidaria: Scyphozoa) Ephyrae
by Kyong-Ho Shin and Keun-Hyung Choi
Diversity 2025, 17(4), 239; https://doi.org/10.3390/d17040239 - 27 Mar 2025
Viewed by 612
Abstract
Sanderia malayensis is a species from the phylum Cnidaria, class Scyphozoa, and order Semaeostomeae, found in tropical waters, including the Red Sea, Indian Ocean, and Malaysian waters. Its distribution extends to the waters of Australia and Japan. This study aimed to evaluate the [...] Read more.
Sanderia malayensis is a species from the phylum Cnidaria, class Scyphozoa, and order Semaeostomeae, found in tropical waters, including the Red Sea, Indian Ocean, and Malaysian waters. Its distribution extends to the waters of Australia and Japan. This study aimed to evaluate the effects of salinity on the growth and survival of Sanderia malayensis ephyrae and to determine its optimal salinity range. The experimental design included two temperature conditions (20 °C and 24 °C) and three salinity levels (21 PSU, 24 PSU, and 27 PSU). The results indicated that growth and feeding abilities were significantly higher in 24 PSU and 27 PSU environments compared to 21 PSU, with the best results observed at both temperatures. Survival rates were higher at 24 PSU (20 °C: 90%, 24 °C: 79%) and 27 PSU (20 °C: 87%, 24 °C: 86%) compared to 21 PSU (20 °C: 70%, 24 °C: 55%). Despite lower survival at 21 PSU, the species demonstrated wide environmental adaptability. These findings suggest that Sanderia malayensis ephyrae are highly adaptable to varying salinity conditions, indicating the potential for the species to expand its distribution into South Korean waters and other East Asian marine ecosystems, including China and Japan, which are impacted by climate change. Full article
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13 pages, 2262 KiB  
Article
Asexual Reproduction and Strobilation of Sanderia malayensis (Scyphozoa, Pelagiidae) in Relation to Temperature: Experimental Evidence and Implications
by Massimo Avian, Gregorio Motta, Mattia Prodan, Enrico Tordoni, Vanessa Macaluso, Alfred Beran, Alenka Goruppi, Giovanni Bacaro and Valentina Tirelli
Diversity 2021, 13(2), 37; https://doi.org/10.3390/d13020037 - 21 Jan 2021
Cited by 5 | Viewed by 5571
Abstract
Sanderia malayensis is a scyphozoan species present in the Indian and Pacific Oceans, ranging from the Suez Canal to Japan. Although this jellyfish is commonly kept in aquariums around the world, there is a knowledge gap regarding its biology and ecology, especially at [...] Read more.
Sanderia malayensis is a scyphozoan species present in the Indian and Pacific Oceans, ranging from the Suez Canal to Japan. Although this jellyfish is commonly kept in aquariums around the world, there is a knowledge gap regarding its biology and ecology, especially at the polyp stage. In this study, we tested the asexual reproductive activity of S. malayensis at three different temperatures: 10, 15 and 20 °C. Results showed significant increases of polyps at 15 and 20 °C, and a minimum at 10 °C, corresponding with daily budding rates of 6.61% ± 0.92%, 5.85% ± 2.36% and 0.66% ± 0.24%, respectively. Moreover, a second experiment was carried out to report about the ability of S. malayensis to prey on Aurelia solida at the ephyra stage. Unidirectional predation of S. malayensis ephyrae on A. solida and an absence of inverse predation was observed. These results could give new insights on the potential fitness and survival of this species if it will ever invade the Mediterranean Sea. Full article
(This article belongs to the Special Issue Patterns and Ecology of Jellyfish in Marine Environment)
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18 pages, 3011 KiB  
Article
Proteomic Analysis of the Venom of Jellyfishes Rhopilema esculentum and Sanderia malayensis
by Thomas C. N. Leung, Zhe Qu, Wenyan Nong, Jerome H. L. Hui and Sai Ming Ngai
Mar. Drugs 2020, 18(12), 655; https://doi.org/10.3390/md18120655 - 21 Dec 2020
Cited by 18 | Viewed by 4991
Abstract
Venomics, the study of biological venoms, could potentially provide a new source of therapeutic compounds, yet information on the venoms from marine organisms, including cnidarians (sea anemones, corals, and jellyfish), is limited. This study identified the putative toxins of two species of jellyfish—edible [...] Read more.
Venomics, the study of biological venoms, could potentially provide a new source of therapeutic compounds, yet information on the venoms from marine organisms, including cnidarians (sea anemones, corals, and jellyfish), is limited. This study identified the putative toxins of two species of jellyfish—edible jellyfish Rhopilema esculentum Kishinouye, 1891, also known as flame jellyfish, and Amuska jellyfish Sanderia malayensis Goette, 1886. Utilizing nano-flow liquid chromatography tandem mass spectrometry (nLC–MS/MS), 3000 proteins were identified from the nematocysts in each of the above two jellyfish species. Forty and fifty-one putative toxins were identified in R. esculentum and S. malayensis, respectively, which were further classified into eight toxin families according to their predicted functions. Amongst the identified putative toxins, hemostasis-impairing toxins and proteases were found to be the most dominant members (>60%). The present study demonstrates the first proteomes of nematocysts from two jellyfish species with economic and environmental importance, and expands the foundation and understanding of cnidarian toxins. Full article
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