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Journal articles on the topic 'Sea urchins'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Karnila, R., D. Iriani, S. Md Shaarani, A. A. Yunus, and R. Salma. "Nutritional characteristics of sea urchin (Diadema setosum) in Bungus, West Sumatera Province." IOP Conference Series: Earth and Environmental Science 1118, no. 1 (2022): 012037. http://dx.doi.org/10.1088/1755-1315/1118/1/012037.

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Abstract Sea urchin is a food that has high nutrition for consumption and sale. Utilization of the gonad Diadema setosum as a food ingredient because it has high nutritional value, such as food additives, fermented products, and body health. Sea urchin gonad components consist of amino acids that are beneficial in various fields of health, especially in increasing the immune system. This study aims to obtain the value of the proportion and chemical composition of sea urchins gonad. The research method consisted of two stages, namely: 1) Preparation of sea urchin gonadal flour and 2) Proximate

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Yu, Yushi, Jiangnan Sun, Yaqing Chang, and Chong Zhao. "High fitness areas drive the aggregation of the sea urchin Mesocentrotus nudus." PeerJ 10 (January 19, 2022): e12820. http://dx.doi.org/10.7717/peerj.12820.

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Sea urchin aggregation is a common phenomenon in coastlines. However, it remains controversial whether sea urchins form resource aggregations or behavioral aggregations in a non-spawning season. To clarify, we studied the aggregative responses to food and predators in the sea urchin Mesocentrotus nudus when high fitness areas (HFAs) were scarce versus sufficient. By taking the occupied area of each sea urchin (test diameter + spines = 4.5 cm) as a square (4.5 cm × 4.5 cm), we set scarce HFAs for the sea urchins in Experiment 1 (the squares of HFAs: the area occupied by experimental sea urchins

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Tamti, Hartati, Rohani Ambo-Rappe, Sharifuddin Bin Andy Omar, Budimawan Pagalay, Muhammad Iqram, and Abigail Mary Moore. "Sea urchin utilisation in Eastern Indonesia." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 28, no. 3 (2023): 231–40. http://dx.doi.org/10.14710/ik.ijms.28.3.231-240.

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Sea urchins have long been an important component of gleaning invertebrate fisheries and are valued for their highly nutritious gonads. Sea urchin fisheries are often unreported and unregulated, despite increasing indications of overexploitation. Data on the post-harvest utilization of sea urchins are limited, particularly in the Indo-Pacific region. This study at 12 sites across four regions in Indonesia (Sulawesi, Moluccas, Nusa Tenggara, Papua) aimed to provide an overview of sea urchin utilization in eastern Indonesia. Data were collected from July to September 2020 using a questionnaire w

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Smith, Joshua G., and Sabrina C. Garcia. "Variation in purple sea urchin (Strongylocentrotus purpuratus) morphological traits in relation to resource availability." PeerJ 9 (April 27, 2021): e11352. http://dx.doi.org/10.7717/peerj.11352.

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Flexible resource investment is a risk sensitive reproductive strategy where individuals trade resources spent on reproduction for basic metabolic maintenance and survival. This study examined morphological variation in herbivorous sea urchin grazers across a mosaic landscape of macroalgae dominated habitats interspersed with patches of sea urchin barrens to determine whether sea urchins shift energy allocation in response to food limitation. Extensive underwater surveys of habitat attributes (e.g., sea urchin density, algae cover) were paired with detailed laboratory assays (e.g., sea urchin

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James, Philip, Tor Evensen, and Alexandra Kinnby. "Seasonal Variation in the Element Composition of Dried, Powdered Green Sea Urchin (Strongylocentrotus droebachiensis) from Northern Norway." Sustainability 16, no. 16 (2024): 6727. http://dx.doi.org/10.3390/su16166727.

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In many countries, such as Norway, there are vast quantities of sea urchins that have formed barrens over large areas of the coastline. Research has shown that removal of sufficient quantities of sea urchins from these barrens can lead to them reverting to a macroalgae forest. Identifying the chemical composition of sea urchins for various uses, such as agricultural fertiliser, would incentivise this sea urchin removal. This study investigates the composition of sea urchins and whether the composition varies when sea urchin collection sites vary both geographically and temporally. Sea urchins

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Kadir, Wiyanti Abd, Sri Nuryatin Hamzah, and La Nane. "The abundance and distribution patterns of sea urchins in Botubarani waters, Tomini Bay, Indonesia." Tomini Journal of Aquatic Science 2, no. 1 (2021): 14–23. http://dx.doi.org/10.37905/tjas.v2i1.11237.

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This study aims to determine the abundance and distribution patterns of sea urchins in Botubarani Waters, Kabila Bone District, Bone Bolango Regency. This research was conducted from July to August 2020. A total of three research stations were established, namely West Tamboa, Central Tamboa and East Tamboa. The abundance of sea urchins was calculated using a quadrant transect measuring 1 × 1 m, which was laid 25 m perpendicular to the coastline using a line transect. Sea urchin species found were identified in situ and the distribution pattern of sea urchins was calculated using the morista di

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Tian, Wenzhuo, Zhong Wang, Xiaofei Leng, et al. "Comparison of Immune Indicators Related to Phagocytosis of Five Species of Sea Urchins under Artificial Infection with the Pathogenic Bacterium of Black Mouth Disease." Biology 13, no. 7 (2024): 495. http://dx.doi.org/10.3390/biology13070495.

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To screen for immune indicators closely related to disease resistance, two species of sea urchin susceptible to black mouth disease (Strongylocentrotus intermedius, S. intermedius ♀ × Heliocidaris crassispina ♂) and three species of sea urchin resistant to black mouth disease (H. crassispina, H. crassispina ♀ × S. intermedius ♂ and Mesocentrotus nudus) were artificially infected with the black mouth pathogen Vibrio echinoideorum. The phagocytosis-related immune indices of the five sea urchin species were compared at different time points post-infection. The results demonstrated that the parame

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8

Snellen, C. L., P. J. Hodum, and E. Fernández-Juricic. "Assessing western gull predation on purple sea urchins in the rocky intertidal using optimal foraging theory." Canadian Journal of Zoology 85, no. 2 (2007): 221–31. http://dx.doi.org/10.1139/z06-203.

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Purple sea urchins ( Strongylocentrotus purpuratus (Stimpson, 1857)) are abundant grazing invertebrates that can have a major impact on the rocky intertidal community. Predators can control the urchin population and indirectly reduce grazing activity. We determined the effects of western gull ( Larus occidentalis Audubon, 1839) predation on purple sea urchins in the rocky intertidal using the framework of optimal foraging theory and taking into account different prey-handling techniques. We recorded the foraging behavior of gulls, measured urchin availability, and estimated prey caloric conten

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CVITKOVIĆ, IVAN, MARIJA DESPALATOVIĆ, ANTE ŽULJEVIĆ, IVAN VUČIĆ, PETRA LUČIĆ, and JELENA NEJAŠMIĆ. "Distribution of sea urchin barrens in shallow algal communities along the eastern Adriatic coast." Mediterranean Marine Science 25, no. 1 (2024): 213–19. http://dx.doi.org/10.12681/mms.33553.

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The sea urchins Paracentrotus lividus and Arbacia lixula are important herbivores in algal communities of the infralittoral rocky bottoms in the Mediterranean Sea. However, grazing by sea urchins that outweighs natural algal recruitment processes might result in the formation of barrens, which are areas dominated by urchins and coralline algae. We present the results of the first large-scale mapping of sea urchin barrens and analyses of sea urchins’ impact on the main algal communities across 1955.5 km of rocky coastline on the eastern side of the Adriatic Sea (Croatia). Since mapping was perf

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Rossetto, André Luiz, Jamesson de Macedo Mora, and Vidal Haddad Junior. "Sea urchin granuloma." Revista do Instituto de Medicina Tropical de São Paulo 48, no. 5 (2006): 303–6. http://dx.doi.org/10.1590/s0036-46652006000500013.

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Injuries caused by venomous and poisonous aquatic animals may provoke important morbidity in humans. The phylum Echinoderma include more than 6000 species of starfish, sea urchins, sand dollars, and sea cucumbers some of which have been found responsible for injuries to humans. Initial injuries by sea urchins are associated with trauma and envenomation, but later effects can be observed. Sea urchin granuloma is a chronic granulomatous skin disease caused by frequent and successive penetration of sea urchin spines which have not been removed from wounds. The authors report a typical case of sea

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Morse, Bryan L., and Heather L. Hunt. "Effect of unidirectional water currents on displacement behaviour of the green sea urchin Strongylocentrous droebachiensis." Journal of the Marine Biological Association of the United Kingdom 93, no. 7 (2013): 1923–28. http://dx.doi.org/10.1017/s002531541300060x.

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Sea urchins can have important ecological effects on benthic communities through their aggregation and feeding behaviour. Urchin movement has been demonstrated to be negatively affected by wave action, but the impact of unidirectional tidal currents on urchin movement has not been investigated. This study examines the effect of unidirectional water velocity on the direction of displacement and movement rate of the green sea urchin, Strongylocentrotus droebachiensis. In laboratory flume experiments there was a clear effect of water currents on the displacement of sea urchins. At speeds ≤30 cm s

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12

Pederson, Hugh G., and Craig R. Johnson. "Growth and age structure of sea urchins (Heliocidaris erythrogramma) in complex barrens and native macroalgal beds in eastern Tasmania." ICES Journal of Marine Science 65, no. 1 (2007): 1–11. http://dx.doi.org/10.1093/icesjms/fsm168.

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Abstract Pederson, H. G., and Johnson, C. R. 2008. Growth and age structure of sea urchins (Heliocidaris erythrogramma) in complex barrens and native macroalgal beds in eastern Tasmania. – ICES Journal of Marine Science, 65: 1–11. The formation of small-scale barrens of sea urchins on the east coast of Tasmania allows for direct comparison of the growth rates and age structures of sea urchin populations in barrens and habitats dominated by native macroalgae. However, such barrens are atypical of any previously described in temperate regions worldwide mainly because of the establishment and sea

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Roem, Muhamad, Retno Setianingrum, and Encik Weliyadi. "ASSOCIATION BETWEEN ECHINOID AND SEAGRASS COMMUNITY IN DERAWAN ISLAND WATERS." Journal of Aquatropica Asia 7, no. 2 (2022): 104–16. http://dx.doi.org/10.33019/joaa.v7i2.3608.

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Sea urchins a biota that is often associated with seagrasses were often found in seagrass beds. The objectives of this research were to discover the condition of sea urchins and seagrass, such as diversity, uniformity, dominance in sea urchins, density, and cover on seagrass, and related to variables in this research. This research was conducted on Derawan Island. The research method that was used is a 5m x 5m (sea urchin) quadrate and 0.5m x 0.5m (seagrass) placed intentionally on 2 stations with a total of 30 quadrats. The results found 3 species of sea urchins and 4 species of seagrass. At

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Sabilu, Yusuf, Jafriati, and Ruslan Madjid. "TEST OF BIOACTITVITY AND ANTIOXIDANT ACTIVITY OF SEA URCHIN (DIADEMA SETOSUM) GONADS AS MEDICINAL INGREDIENTS BASED ON MARINE BIODIVERSITY." Journal of Southwest Jiaotong University 57, no. 1 (2022): 147–53. http://dx.doi.org/10.35741/issn.0258-2724.57.1.13.

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Sea urchins (Diadema setosum) are marine animals belonging to phylum Echinodermata which are often found in the Wakatobi's waters. Although Indonesia is one of the exporters of sea urchins, the use of sea urchins as medicinal and health food products has not been widely used. This is due to the limited information about the potential active compounds contained in sea urchins from Indonesian waters. This study aimed to determine the bioactivity and antioxidant activity of gonad extract of sea urchin (Diadema setosum). The sample test consisted of several stages, namely extraction by maceration

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Moningkey, Ruddy D. "PERAN EKOLOGI BULU BABI DALAM KOMUNITAS RUMPUT LAUT DI PERAIRAN PESISIR KEMA KABUPATEN MINAHASA UTARA." JURNAL PERIKANAN DAN KELAUTAN TROPIS 7, no. 1 (2011): 1. http://dx.doi.org/10.35800/jpkt.7.1.2011.18.

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A study on the functional role of the sea urchin, Salmacis belli, on seagrass bed near the coast of Kema, North Minahasa Regency, was done by analyzing the gut contents, the food preference, and the feeding periodicity. Sea urchins and plants were collected from the seagrass bed by snorkeling along a 100 M transect line with 30 quadrates randomly placed. The feeding periodicity was determined from the gut index in 24 hours with 3 hour intervals. The results showed that the sea urchin S. belli fed mainly on seagrass Thallasia hemprichii, Enhalus acoroides and Halimeda opuntioa. The feeding peri

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Spyksma, AJP, NT Shears, and RB Taylor. "Injured conspecifics as an alarm cue for the sea urchin Evechinus chloroticus." Marine Ecology Progress Series 641 (May 7, 2020): 135–44. http://dx.doi.org/10.3354/meps13301.

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Predator mediation of sea urchin grazing pressure may occur via lethal removal of individual sea urchins or non-lethal modification of sea urchin behaviour. Several studies have shown that predation-related cues can affect sea urchin movement and grazing rates, but generalisations about the types of cues that prompt responses and the magnitude of those responses will require further research on a wider variety of species. We examined the effects of potential alarm cues on behaviour of the habitat-forming sea urchin Evechinus chloroticus (Echinometridae) on fished rocky reefs in northeastern Ne

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Lachnit, Catherine, Emily Esplandiu, Joshua Patterson, and Diego Lirman. "Tandem reef restoration using corals and sea urchins: Building complex habitat for herbivores." PLOS One 20, no. 6 (2025): e0325468. https://doi.org/10.1371/journal.pone.0325468.

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Amidst the decline of coral reef ecosystems, restoration practitioners are expanding their focus to incorporate key reef community components, such as grazers, to improve site conditions and the long-term survivorship of restored corals. We investigated the use of hatchery-propagated Diadema antillarum as well as two other locally abundant urchin species, Lytechinus variegatus and Echinometra viridis, for coral-urchin tandem reef restoration in Florida, USA. Urchins were deployed onto reef plots at various stages of Acropora cervicornis restoration and provided artificial cement refuges to eva

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Sonnenholzner, Jorge, Gema Alcivar, Adrián Marquez, and César Lodeiros. "Los erizos Arbacia incisa y Eucidaris thouarsii (Echinodermata) como agentes de biocontrol del “fouling” en canastas de cultivo de Crassostrea gigas (Mollusca: Ostreidae)." Revista de Biología Tropical 65, no. 1-1 (2017): 35. http://dx.doi.org/10.15517/rbt.v65i1-1.31665.

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The sea urchins Arbacia incisa and Eucidaris thouarsii (Echinodermata) as fouling biocontrol agents in culture cages of Crassostrea gigas (Mollusca: Ostreidae).Fouling clogs cultivation cages of bivalves afecting their growth. We tested biocontrol with sea urchins in the suspended culture of C. gigas during one month. The experimental design included: 1) oysters without sea urchins, 2) oysters with the black sea urchin Arbacia incisa (50.5 ± 0.43 mm of diameter testa-DT), 3) oysters with the pencil sea urchin E. thouarsii (34. 2 ± 2.13 mm DT) and 4) oysters without sea urchins with a pearl net

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Farina, Simone, Maura Baroli, Roberto Brundu, et al. "The challenge of managing the commercial harvesting of the sea urchin Paracentrotus lividus: advanced approaches are required." PeerJ 8 (October 8, 2020): e10093. http://dx.doi.org/10.7717/peerj.10093.

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Sea urchins act as a keystone herbivore in marine coastal ecosystems, regulating macrophyte density, which offers refuge for multiple species. In the Mediterranean Sea, both the sea urchin Paracentrotus lividus and fish preying on it are highly valuable target species for artisanal fisheries. As a consequence of the interactions between fish, sea urchins and macrophyte, fishing leads to trophic disorders with detrimental consequences for biodiversity and fisheries. In Sardinia (Western Mediterranean Sea), regulations for sea urchin harvesting have been in place since the mid 90s. However, give

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Liu, Zerui, Yu Guo, Chuanxin Qin, Xiaohui Mu, and Jia Zhang. "High-Throughput Sequencing Analysis Revealed a Preference for Animal-Based Food in Purple Sea Urchins." Biology 13, no. 8 (2024): 623. http://dx.doi.org/10.3390/biology13080623.

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Sea urchins play an important role in marine ecosystems. Owing to limitations in previous research methods, there has been insufficient understanding of the food sources and ecological functional value of purple sea urchins, leading to considerable controversy regarding their functional positioning. We focused on Daya Bay as the research area, utilizing stable isotope technology and high-throughput sequencing of 16S rDNA and 18S rDNA to analyze sea urchins and their potential food sources in stone and algae areas. The results showed that the δ13C range of purple sea urchins in the stone area i

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Amir, Yam, Maayan Insler, Abram Giller, Danielle Gutman, and Gil Atzmon. "Senescence and Longevity of Sea Urchins." Genes 11, no. 5 (2020): 573. http://dx.doi.org/10.3390/genes11050573.

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Sea urchins are a minor class of marine invertebrates that share genetic similarities with humans. For example, the sea urchin species Strongylocentrotus purpuratus is estimated to have 23,300 genes in which the majority of vertebrate gene families are enveloped. Some of the sea urchin species can demonstrate extreme longevity, such as Mesocentrotus franciscanus, living for well over 100 years. Comparing human to sea urchin aging suggests that the latter do not fit within the classic understanding of biological aging, as both long- and short-lived sea urchin species demonstrate negligible sene

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Belleza, Dominic Franco C., Takeshi Urae, Shin-ichiro Tanimae, Kento Toyama, Akari Isoda, and Gregory N. Nishihara. "The behavior of sympatric sea urchin species across an ecosystem state gradient." PeerJ 11 (June 13, 2023): e15511. http://dx.doi.org/10.7717/peerj.15511.

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Background In temperate macroalgal forests, sea urchins are considered as a keystone species due to their grazing ability. Given their potential to shape benthic communities, we monitored the habitat use by three sympatric sea urchin species and compared their behaviors in a vegetated habitat (VH) and an adjacent isoyake habitat (IH). Methods We monitored the environmental conditions and sea urchin density along deep and shallow transects of the VH and IH for over a year. The benthic rugosity at both sites were also surveyed. A mark-recapture experiment was conducted on the two most abundant s

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Adni, Nainul, Aras Mulyadi, and Thamrin Thamrin. "POPULATION CONDITIONS OF ECHINOIDEA AND CORAL REEF COVERS IN PONCAN GODANG ISLAND, SIBOLGA, NORTH SUMATERA." Asian Journal of Aquatic Sciences 4, no. 2 (2021): 112–16. http://dx.doi.org/10.31258/ajoas.4.2.112-116.

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Poncan Godang Island is included in the appropriate category based on the suitability of land for the Sibolga tourist area, with the presence of tourism activities that can also affect the amount of biodiversity in it. Considering the importance of coral reefs for biodiversity and sea urchins which also have a role in coral reef ecosystems, it is necessary to conduct research on the condition of sea urchins population and the percentage of coral reefs on Poncan Godang Island. Sea urchin and coral reef data were collected using the Line Intercept Transect (LIT) method by monitoring directly on

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Yamamori, Luna, and Makoto Kato. "Effect of a cold event on population and community of pit-inhabiting sea urchins in Western Pacific coasts." Journal of the Marine Biological Association of the United Kingdom 101, no. 5 (2021): 819–26. http://dx.doi.org/10.1017/s0025315421000680.

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AbstractCoastal tide pools in southern Japan are inhabited by the rock-boring sea urchin Echinostrephus molaris, which excavate pits in the substrate. These pits are subsequently used by non-boring sea urchins such as Anthocidaris crassispina and Echinometra sp. B, and the recolonized pits are often inhabited by a commensal limpet-like trochid snail species, Broderipia iridescens. We explored the population and community dynamics of these sea urchins and the limpet-like snail by monitoring occupancy of 512 pits in tide pools in Shirahama, Japan from May 2017–May 2019. Initially, nearly all pit

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Dajka, Jan-Claas, Victoria Beasley, Gilberte Gendron, and Nicholas AJ Graham. "Investigating sea urchin densities critical to macroalgal control on degraded coral reefs." Environmental Conservation 48, no. 2 (2021): 136–41. http://dx.doi.org/10.1017/s037689292000051x.

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SummaryThere is an assumption that tropical sea urchins are macroalgal grazers with the ability to control macroalgal expansion on degraded coral reefs. We surveyed abundances of Echinothrix calamaris, an urchin species common in the western Indian Ocean on 21 reefs of the inner Seychelles and predicted their density using habitat predictors in a modelling approach. Urchin densities were greatest on patch reef habitat types and declined with increasing macroalgal cover. Next, we experimentally investigated the macroalgae-urchin relationship by penning two sea urchin densities on macroalgal fie

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Keats, D. W., D. H. Steele, and G. R. South. "Atlantic wolffish (Anarhichas lupus L.; Pisces: Anarhichidae) predation on green sea urchins (Strongylocentrotus droebachiensis (O.F. Mull.); Echinodermata: Echinoidea) in eastern Newfoundland." Canadian Journal of Zoology 64, no. 9 (1986): 1920–25. http://dx.doi.org/10.1139/z86-288.

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The diet of the Atlantic wolffish was studied by examining the contents of the gastrointestinal tracts of 90 individuals collected from the sea urchin dominated rocky subtidal in eastern Newfoundland. Green sea urchins comprised 75% of the overall diet by weight. Horse mussels ranked second but comprised only 9.5% of the diet. The remainder of the diet consisted of several species of invertebrates and fish. The average (over the whole season) wolffish contained 120 g of urchins, equivalent to the biomass of urchins on 0.23 m2 in the middle of the urchin-dominated zone. During April–September,

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Sari, Tiara Permata, Abd Rahman As-syakur, Yulianto Suteja, and Dwi Budi Wiyanto. "Hubungan Kepadatan Bulu Babi (Echinoidea) dan Tutupan Terumbu Karang pada Kawasan Intertidal Pantai Sanur." Journal of Marine and Aquatic Sciences 3, no. 2 (2017): 134. http://dx.doi.org/10.24843/jmas.2017.v3.i02.134-141.

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Marine intertidal region is an area that is affected by the mainland. One of the ecosystems found in the intertidal area is the coral reef ecosystem. Urchin is one that lives on these ecosystems. Sanur Beach area has coral reefs and the intertidal zone is quite extensive. The many activities and cruise tourism in Sanur Beach will indirectly affect the life of coral reefs and associated animal in it in this case urchins. The purpose of this study was to determine the relationship density of sea urchins and coral reefs cover percentage in the intertidal area on Sanur Beach. Research done during

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Stien, Audun. "Effects of the parasitic nematode Echinomermella matsi on growth and survival of its host, the sea urchin Strongylocentrotus droebachiensis." Canadian Journal of Zoology 77, no. 1 (1999): 139–47. http://dx.doi.org/10.1139/z98-159.

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It has been suggested that the parasitic nematode Echinomermella matsi significantly affects the population dynamics of its host, the sea urchin Strongylocentrotus droebachiensis. The effects of infection on both host fecundity and host survival may be of importance. The fecundity of sea urchins is related to their size. Negative effects of infection on host growth will therefore reduce reproductive rates. I estimated the effect of infection on host growth and survival in two naturally infected wild sea urchin populations using a capture-mark-recapture approach. Infected and uninfected sea urc

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Ristanto, Andi, Ari Hepi Yanti, and Tri Rima Setyawati. "Sea Urchin (Echinoidea) Distribution and Abundance in the Intertidal Zone of Bengkayang Regency." Biosaintifika: Journal of Biology & Biology Education 10, no. 1 (2018): 32–40. http://dx.doi.org/10.15294/biosaintifika.v10i1.9763.

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Sea urchins is the member of Echinoidea. This species can be found in tropical marine water to the poles. The study aimed to know the types, the abundance and spread of sea urchins in Bengkayang Regency. The research, used the transect method. Each station consisted of 3 transects with a length of 50 meters from the shore into the sea with the distance of 10 meters among the transects. This research obtained five species consisting of three species of the Diadema (genus) and two species of the Echinotrix (genus) i.e. Diadema antillarium, D. savignyi, D. setosum, Echinotrix calamaris and E. dea

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Aulia Debby Pelu, Risman Tunny, and Bilkis Latuconsina. "SKRINING FITOKIMIA DAN UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL BULU BABI (Diadema setosum) TERHADAP PERTUMBUHAN Staphylococcus aureus DI PERAIRAN DESA PELAUW." Jurnal Sains dan Kesehatan 4, no. 2 (2020): 01–15. http://dx.doi.org/10.57214/jusika.v4i2.133.

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Sea urchin (Diadema setosum) is an aquatic biota that has high nutritional value. Bioactive compounds produced by sea urchins have the potential to be used as natural antibacterial compounds. This study aims to identify chemical compounds and determine the antibacterial activity of ethanol extract of sea urchins (Diadema setosum) against the growth of Staphylococcus aureus bacteria. The research method used is the agar diffusion method. The results of phytochemical screening of sea urchin extract (Diadema setosum) showed the presence of alkaloids and saponins. By using variations in the concen

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Fitriyani, Fitriyani, Didik Santoso, and Karnan Karnan. "Abundance and Distribution Patterns of Sea Urchins (Echinoidea) at Lakey Beach, Hu'u District, Dompu Regency." Jurnal Biologi Tropis 22, no. 1 (2022): 277–88. http://dx.doi.org/10.29303/jbt.v22i1.3119.

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Sea urchins are marine biota that have many benefits for life, so there is a need for information about the existence of sea urchins. The existence of sea urchins in marine ecosystems has a significant influence on the ecological balance, one of which is for coral reefs, because sea urchins are one of the control of macroalgae populations. The purpose of this study was to determine the species abundance, diversity index, dominance index and distribution pattern of sea urchins (Echinoidea) at Lakey Beach, Hu'u District, Dompu Regency. This type of research is descriptive exploratory using purpo

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Schuster, Jasmin M., A. Kurt Gamperl, Patrick Gagnon, and Amanda E. Bates. "Distinct realized physiologies in green sea urchin (Strongylocentrotus droebachiensis) populations from barren and kelp habitats." FACETS 7 (January 1, 2022): 822–42. http://dx.doi.org/10.1139/facets-2021-0125.

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Overgrazing of habitat-forming kelps by sea urchins is reshaping reef seascapes in many temperate regions. Loss of kelp, in particular as a food source, may alter individual consumer physiology, which in turn may impair their ability to respond to climate warming. Here, we measured the temperature dependence of absolute and mass-independent oxygen consumption ([Formula: see text]) using two different exposure protocols (acute exposure and temperature “ramping”), as proxies of realized physiology, between green sea urchin ( Strongylocentrotus droebachiensis) populations from neighbouring barren

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Kresnamurti, Angelica, Farizah Izazi, and Dwi Kurniawati. "STANDARDISASI EKSTRAK ETANOL 96% BULU BABI Echinometra mathaei DARI PERAIRAN BANGKALAN." Journal of Herbal, Clinical and Pharmaceutical Science (HERCLIPS) 2, no. 1 (2021): 21. http://dx.doi.org/10.30587/herclips.v2i1.2211.

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Echinometra mathaei sea urchins are known to contain chemical compounds that can be used to overcome health problems, one of which has antioxidant activity. Some previous studies have explained the benefits of sea urchins but to ensure the quality assurance of sea urchins extracts, efforts should be made to determine the quality standards of sea urchins extract. This study aims to standardize specific parameters and non-specific parameters on Echinometra mathaei sea urchins extract to ensure the quality of 96% ethanol extract. Samples were obtained from Rongkang Beach, Kwanyar District, Bangka

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Milla, Mordekhai Rahenri, and Firat Meiyasa. "KARAKTERISTIK KIMIAWI KECAP BULU BABI (Diadema setosum) DENGAN LAMA FERMENTASI YANG BERBEDA." Marinade 5, no. 01 (2022): 10–18. http://dx.doi.org/10.31629/marinade.v5i01.4128.

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Sea urchin (Diadema setosum) is one type of marine biota that can be used as a food source. The processing of sea urchins as fermented food, especially soy sauce products, has not been reported until now, while it is known that sea urchins have good nutrition. The purpose of this study was to evaluate chemical compositions such as pH, moisture content, ash content, fat content, protein content, carbohydrates in sea urchin soy sauce with different fermentation times. The results showed that the chemical composition of sea urchin (Diadema setosum) with different fermentation time had a pH value

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Amai, Sahana, Kisara Yuki, Siddabasave Gowda B. Gowda, Divyavani Gowda, and Shu-Ping Hui. "Lipidomic Profiling of Edible Japanese Sea Urchins by LC–MS." Foods 14, no. 13 (2025): 2268. https://doi.org/10.3390/foods14132268.

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Sea urchins (Echinoidea) are marine echinoderms commonly consumed as seafood in East Asia. To date, various metabolic components of sea urchins have been analyzed, and their health benefits for humans have also been attracting attention. Lipids are the major biomolecules present in sea urchins. However, the comprehensive lipid profiling of sea urchins is limited. In this study, we aimed to perform the comprehensive lipid profiling of six types of sea urchins using liquid chromatography–mass spectrometry (LC/MS). The application of untargeted lipidomics led to the identification of 281 lipid mo

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Rechsteiner, Erin, and Angeleen Olson. "Harlequin Ducks (Histrionicus histrionicus) Scavenge Sea Urchin Fragments from Foraging Sea Otters (Enhydra lutris)." Canadian Field-Naturalist 130, no. 2 (2016): 91. http://dx.doi.org/10.22621/cfn.v130i2.1832.

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Foraging animals may risk association with potential predators to obtain otherwise inaccessible prey. We observed this strategy in wintering Harlequin Ducks (Histrionicus histrionicus) scavenging fragments of Red Sea Urchins (Mesocentrotus franciscanus) from foraging Sea Otters (Enhydra lutris) that were re-occupying an area from which they had been ecologically absent since about 1850. Harlequin Ducks, like other sea ducks, have not previously been reported scavenging from other birds or mammals. In British columbia, Red Sea Urchins have reached large sizes and densities since the removal of

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Stark, Alyssa Y., Carla A. Narvaez, and Michael P. Russell. "Adhesive plasticity among populations of purple sea urchin (Strongylocentrotus purpuratus)." Journal of Experimental Biology 223, no. 15 (2020): jeb228544. http://dx.doi.org/10.1242/jeb.228544.

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ABSTRACTSea urchins native to the nearshore open coast experience periods of high, repeated wave forces that can result in dislodgement. To remain attached while clinging and locomoting across rocky substrates, sea urchins use adhesive tube feet. Purple sea urchins (Strongylocentrotus purpuratus) adhere to a variety of rock substrates (e.g. sandstone, mudstone, granite), and display morphological plasticity (skeletal morphology) to native substrate. We tested the hypothesis that their adhesive system is also plastic and varies as a function of native population and substrate. The results of ou

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Rodríguez, Sebastián R., and José M. Fariña. "Effect of drift kelp on the spatial distribution pattern of the sea urchin Tetrapygus niger: a geostatistical approach." Journal of the Marine Biological Association of the United Kingdom 81, no. 1 (2001): 179–80. http://dx.doi.org/10.1017/s0025315401003587.

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Geostatistical analysis was used to investigate the effect of drift kelp on the spatial distribution of the sea urchin Tetrapygus niger. The positions of all sea urchins were mapped in four experimental plots in the rocky intertidal zone of the central Chilean coast. When drift macroalgae were added, the sea urchins left the substratum irregularities, increased in number inside the experimental plots, and tended to form a dense aggregation around the kelp. After the drift macroalgae was removed, the aggregations disappeared and the sea urchins returned to the depressions and/or interstices of

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Sanderson, J. C., S. D. Ling, J. G. Dominguez, and C. R. Johnson. "Limited effectiveness of divers to mitigate ‘barrens’ formation by culling sea urchins while fishing for abalone." Marine and Freshwater Research 67, no. 1 (2016): 84. http://dx.doi.org/10.1071/mf14255.

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Climate-driven incursion of the long-spined sea urchin (Centrostephanus rodgersii) in eastern Tasmania has prompted calls for strong management intervention given the urchins’ capacity to overgraze kelp beds and cause local collapse of valuable reef fisheries. We examined the effectiveness of commercial divers culling C. rodgersii while undertaking otherwise normal fishing for black-lip abalone (Haliotis rubra). Diver effort appears to be driven by fishing yield and not the opportunity to maximise numbers of urchins culled; the greatest culls occurred on shorter dives when abalone fishing was

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Brady, Sheanna M., and Robert E. Scheibling. "Repopulation of the shallow subtidal zone by green sea urchins (Strongylocentrotus droebachiensis) following mass mortality in Nova Scotia, Canada." Journal of the Marine Biological Association of the United Kingdom 85, no. 6 (2005): 1511–17. http://dx.doi.org/10.1017/s0025315405012713.

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Repopulation by green sea urchins Strongylocentrotus droebachiensis of a steeply sloping rock bottom was monitored at a wave-exposed headland (Chebucto Head) following a disease outbreak that caused mass mortality in September 1999. Density and size of urchins were sampled in four depth strata: at 8–10 m in an urchin grazing aggregation (front) along the lower margin of a kelp bed, at 12 m and 16 m on a bedrock ramp, and at 24 m on a cobble and boulder field where urchins were unaffected by the disease. Shoreward migration of adults along the ramp from the surviving population at 24 m was the

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Keats, D. W., D. H. Steele, and G. R. South. "Ocean pout (Macrozoarces americanus (Bloch and Schneider) (Pisces: Zoarcidae)) predation on green sea urchins (Strongylocentrotus droebachiensis (O.F. Mull.) (Echinodermata: Echinoidea)) in eastern Newfoundland." Canadian Journal of Zoology 65, no. 6 (1987): 1515–21. http://dx.doi.org/10.1139/z87-234.

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The diet of ocean pout was studied by analysis of the contents of the gastrointestinal tracts of 151 individuals collected from the green sea urchin dominated rocky subtidal in eastern Newfoundland. Green sea urchins constituted 62% of the overall diet by weight. The brittle star, Ophiopholus aculeata, constituted 7% of the diet, while the remainder was miscellaneous invertebrates and fish (mainly capelin and billfish). From April to July, when the fish are inshore and feeding, before breeding, the average ocean pout contained 56.3 g of urchins. This is a biomass of urchins equivalent to that

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Narvaez, CA, B. Sainte-Marie, and LE Johnson. "Intraspecific competition in size-structured populations: ontogenetic shift in the importance of interference competition in a key marine herbivore." Marine Ecology Progress Series 649 (September 10, 2020): 97–110. http://dx.doi.org/10.3354/meps13435.

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Individuals rarely have equal competitive abilities, with body size being one of the most important attributes affecting the mechanism (i.e. exploitative and interference) and consequences of competition. Competitive interactions within size-structured populations are complex and can have major implications for population dynamics, community structure and evolutionary processes. Destructive grazing of kelp beds by the green urchin Strongylocentrotus droebachiensis creates barrens where high-quality food is scarce and intraspecific competition may have an important role in structuring populatio

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James, Philip, Tor Evensen, and Gunhild Johansson. "Effect of Season and Increased Temperature on Survival, Roe Enhancement, and Reproductive Cycle of the Green Sea Urchin (Strongylocentrotus droebachiensis) Collected from Four Relatively Close Sites in Northern Norway." Aquaculture Research 2023 (April 17, 2023): 1–10. http://dx.doi.org/10.1155/2023/6360865.

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A series of three trials were conducted in the North of Norway at different times of the year. The trials consisted of harvesting sea urchins from four sites, situated within 5 km of each other and then holding them in land-based enhancement facilities. They were held at ambient seawater temperatures as well as ambient plus 3.0°C. Samples were taken from the wild at the time of collection and at the end of the enhancement period as well as from the enhanced sea urchins from each site. Results showed that utilising the sea urchins from a variety of sites, even from areas where there is an abund

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Belleza, DFC, Y. Kawabata, T. Toda, and GN Nishihara. "Effects of dead conspecifics, hunger states, and seasons on the foraging behavior of the purple urchin Heliocidaris crassispina." Marine Ecology Progress Series 664 (April 15, 2021): 133–48. http://dx.doi.org/10.3354/meps13653.

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Trophic cascades are a powerful result of predator-prey relationships in an ecosystem. In aquatic environments, the signals associated with predators and predation are used by prey as a cue to avoid encountering predators when foraging for food. These behavioral cues can be powerful enough to control prey populations and indirectly protect primary producers. Here, we evaluated the effects of cues associated with predation on the purple urchin Heliocidaris crassispina and examined effects of hunger state and season, using time-lapse photography. A series of laboratory and in situ manipulative e

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Ye, Qi, Chuang Gao, Haoran Xiao, et al. "Feeding Behavior, Gut Microbiota, and Transcriptome Analysis Reveal Individual Growth Differences in the Sea Urchin Strongylocentrotus intermedius." Biology 13, no. 9 (2024): 705. http://dx.doi.org/10.3390/biology13090705.

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Growth differentiation among farmed sea urchins (Strongylocentrotus intermedius) poses a significant challenge to aquaculture, with there being a limited understanding of the underlying molecular mechanisms. In this study, sea urchins with varying growth rates, reared under identical conditions, were analyzed for feeding behavior, gut microbiota, and transcriptomes. Large-sized sea urchins demonstrated significantly higher feeding ability and longer duration than smaller ones. The dominant phyla across all size groups were Campylobacterota, Proteobacteria, and Firmicutes, with Campylobacterota

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Guillou, Monique, Jacques Grall, and Solène Connan. "Can low sea urchin densities control macro-epiphytic biomass in a north-east Atlantic maerl bed ecosystem (Bay of Brest, Brittany, France)?" Journal of the Marine Biological Association of the United Kingdom 82, no. 5 (2002): 867–76. http://dx.doi.org/10.1017/s0025315402006276.

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The distribution, abundance and feeding behaviour of sea urchins (Paracentrotus lividus, Psammechinus miliaris, Sphaerechinus granularis) and the macro-algal biomass were assessed in two maerl beds within a north-east Atlantic coastal ecosystem (Bay of Brest, Brittany, France). To study the possible control of herbivorous sea urchins on the macrophytic algae, one maerl bed under the influence of urban sewage (northern site) was compared to one less influenced by urban and industrial outlets (southern site). Macrophytic biomass in the northern site was estimated as 40-fold higher than in the so

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Wakano, Deli, and Laury Marcia Chara Huwae. "Struktur Komunitas Bulu Babi Di Perairan Pantai Kampung Baru Pulau Banda Kabupaten Maluku Tengah." Biosel: Biology Science and Education 9, no. 2 (2020): 122. http://dx.doi.org/10.33477/bs.v9i2.1628.

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The waters of Kampung Baru Village are one of the waters in Banda Island, Central Maluku Regency, which has an abundance of marine life. The substrate conditions in these waters are rocky, rocky and sandy, surrounded by seagrass. On the coast of Kampung Baru Village, there are many marine biota, including crustaceans, gastropods, bivalves, echinoderms, sea cucumbers, starfish and others. Sea urchins are one of the most important biota because people in Kampung Baru Village use their gonads for daily consumption. The existence of sea urchins in coral reef ecosystems has a significant effect on

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Chu, Yiru, De-Sing Ding, Wei-Ting Sun, Cyril Glenn Satuito, and Chih-Hung Pan. "Effects of Marine Microalgae on the Developmental Growth of the Sea Urchin Larviculture Anthocidaris crassipina." Fishes 8, no. 6 (2023): 278. http://dx.doi.org/10.3390/fishes8060278.

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The sea urchin is a very important aquatic economic organism in many countries and has high food value. However, it has recently been heavily fished, and it would be of great importance to the sustainable development of coral reefs to develop large-scale aquaculture of sea urchins. Sea urchins are prone to death during larval development. Therefore, in this study, three kinds of microalgae were used as the initial food for sea urchins to evaluate whether different kinds of microalgae can improve their survival and growth rates. Chaetoceros muelleri (C), Isochrysis galbana tml (I), and Dunaliel

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Mao, Chai-An, Cavit Agca, Julie A. Mocko-Strand, et al. "Substituting mouse transcription factor Pou4f2 with a sea urchin orthologue restores retinal ganglion cell development." Proceedings of the Royal Society B: Biological Sciences 283, no. 1826 (2016): 20152978. http://dx.doi.org/10.1098/rspb.2015.2978.

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Pou domain transcription factor Pou4f2 is essential for the development of retinal ganglion cells (RGCs) in the vertebrate retina. A distant orthologue of Pou4f2 exists in the genome of the sea urchin (class Echinoidea) Strongylocentrotus purpuratus ( SpPou4f1/2 ), yet the photosensory structure of sea urchins is strikingly different from that of the mammalian retina. Sea urchins have no obvious eyes, but have photoreceptors clustered around their tube feet disc. The mechanisms that are associated with the development and function of photoreception in sea urchins are largely unexplored. As an

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Solari, Paolo, Giorgia Sollai, Viviana Pasquini, Angelica Giglioli, Roberto Crnjar, and Piero Addis. "Blue-Green Algae as Stimulating and Attractive Feeding Substrates for a Mediterranean Commercial Sea Urchin Species, Paracentrotus lividus." Life 13, no. 7 (2023): 1510. http://dx.doi.org/10.3390/life13071510.

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Sea urchins rely on chemical senses to localize suitable food resources, therefore representing model species for chemosensory studies. In the present study, we investigated the chemical sensitivity of the Mediterranean sea urchin Paracentrotus lividus to the blue-green alga Aphanizomenon flos-aquae, namely “Klamath”, and to a few amino acids chosen from the biochemical composition of the same algae. To this end, we used the “urchinogram” method, which estimates the movement rate of the sea urchins in response to chemicals. Our results showed that Klamath represents a strong chemical stimulus

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