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Journal articles on the topic 'Zooxanthelles'

Author: Grafiati

Published: 6 April 2023

Last updated: 31 July 2025

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1

Suharsono. "ULTRASTRUCTURE OF THE ENDOSYMBIOTIC DINOFLAGELLATE Symbiodinium microadriaticum LIVING IN THE SEA ANEMONE Anemonia viridis." Marine Research in Indonesia 28 (May 11, 2018): 13–23. http://dx.doi.org/10.14203/mri.v28i0.412.

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The zooxanthella, Symbiodinum microadriaticum, an endosymbiotic dinoflagellate shows variation in its ultrastructure within its population in the sea anemone, Anemonia viridis. Such variation included the number of thylakoid, the structure of inclusions and the structure of amphiesma. The string-like structure was also found in the nucleoplasm. Some zooxanthellae have a branching or double pyrenoid with two or three stalks. Under certain condition, which are not clearly understood, two or three zooxanthellae are enclosed within one very thick membrane.

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Lohr, Jayme, Colin B. Munn, and William H. Wilson. "Characterization of a Latent Virus-Like Infection of Symbiotic Zooxanthellae." Applied and Environmental Microbiology 73, no. 9 (2007): 2976–81. http://dx.doi.org/10.1128/aem.02449-06.

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ABSTRACT A latent virus-like agent, which we designated zooxanthella filamentous virus 1 (ZFV1), was isolated from Symbiodinium sp. strain CCMP 2465 and characterized. Transmission electron microscopy and analytical flow cytometry revealed the presence of a new group of distinctive filamentous virus-like particles after exposure of the zooxanthellae to UV light. Examination of thin sections of the zooxanthellae revealed the formation and proliferation of filamentous virus-like particles in the UV-induced cells. Assessment of Symbiodinium sp. cultures was used here as a model to show the effect

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3

Ulstrup, Karin E., Michael Kühl, and David G. Bourne. "Zooxanthellae Harvested by Ciliates Associated with Brown Band Syndrome of Corals Remain Photosynthetically Competent." Applied and Environmental Microbiology 73, no. 6 (2007): 1968–75. http://dx.doi.org/10.1128/aem.02292-06.

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ABSTRACT Brown band syndrome is a new coral affliction characterized by a local accumulation of yet-unidentified ciliates migrating as a band along the branches of coral colonies. In the current study, morphologically intact zooxanthellae (= Symbiodinium) were observed in great numbers inside the ciliates (>50 dinoflagellates per ciliate). Microscale oxygen measurements and variable chlorophyll a fluorescence analysis along with microscopic observations demonstrated that zooxanthellae within the ciliates are photosynthetically competent and do not become compromised during the progression o

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4

Frankowiak, Katarzyna, Ewa Roniewicz, and Jarosław Stolarski. "Photosymbiosis in Late Triassic scleractinian corals from the Italian Dolomites." PeerJ 9 (March 16, 2021): e11062. http://dx.doi.org/10.7717/peerj.11062.

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During the Carnian, oligotrophic shallow-water regions of the western Tethys were occupied by small, coral-rich patch reefs. Scleractinian corals, which already contributed to the formation of the reef structure, owed their position most probably to the symbiosis with dinoflagellate algae (zooxanthellae). Using microstructural (regularity of growth increments) and geochemical (oxygen and carbon stable isotopes) criteria of zooxanthellae symbiosis, we investigated whether this partnership was widespread among Carnian scleractinians from the Italian Dolomites (locality Alpe di Specie). Although

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5

Ben-Haim, Yael, Maya Zicherman-Keren, and Eugene Rosenberg. "Temperature-Regulated Bleaching and Lysis of the Coral Pocillopora damicornis by the Novel Pathogen Vibrio coralliilyticus." Applied and Environmental Microbiology 69, no. 7 (2003): 4236–42. http://dx.doi.org/10.1128/aem.69.7.4236-4242.2003.

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ABSTRACT Coral bleaching is the disruption of symbioses between coral animals and their photosynthetic microalgal endosymbionts (zooxanthellae). It has been suggested that large-scale bleaching episodes are linked to global warming. The data presented here demonstrate that Vibrio coralliilyticus is an etiological agent of bleaching of the coral Pocillopora damicornis. This bacterium was present at high levels in bleached P. damicornis but absent from healthy corals. The bacterium was isolated in pure culture, characterized microbiologically, and shown to cause bleaching when it was inoculated

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6

Kitaya, Yoshiaki, Yasunori Iba, Toshio Shibuya, and Atsunori Masuda. "Effects of Temperature, Dissolved Oxygen Concentration, and Photosynthetic Photon Flux Density on the Growth of the Sea Bivalve Tridacna crocea in Combination with the Symbiotic Alga Zooxanthella." Hydrobiology 3, no. 4 (2024): 350–63. http://dx.doi.org/10.3390/hydrobiology3040022.

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The sea bivalve clam Tridacna crocea inhabiting the shallow sea of tropical and subtropical zones lives with the symbiotic alga zooxanthella in its mantle. Zooxanthellae algae perform photosynthesis and supply nutrients to T. crocea. Recently, the abundance of T. crocea has decreased rapidly due to overfishing in coastal areas in Okinawa, Japan. T. crocea culture systems for mass production will contribute to the conservation of T. crocea and thus marine ecosystems. Environmental control methods for T. crocea culture have not been established because of a lack of knowledge about the appropriat

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7

Lathuilière, Bernard. "Faune corallienne des récifs toarciens du Moyen Atlas marocain, première approche." Bulletin de la Société Géologique de France 182, no. 6 (2011): 533–44. http://dx.doi.org/10.2113/gssgfbull.182.6.533.

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Abstract Des récifs ont été décrits dans le Toarcien supérieur du Moyen Atlas Marocain [Elmi et al., 2002]. Ils sont localisés dans le synclinal de Awragh-Afennourir (Moyen Atlas occidental) immédiatement au sud du Moyen Atlas tabulaire. Ce sont des biohermes placés au sommet de blocs basculés. Leur épaisseur varie de 1 à 12 m. Ils reposent sur une formation datée de la zone à Levisoni, sous zone à Gemma et sont couverts par des sédiments appartenant à la partie supérieure de la zone à Meneghini. Leur paléolatitude était de 18°N. Un ensemble de 18 échantillons de coraux collectés par S. Elmi s

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8

Cervino, James M., Raymond L. Hayes, Shawn W. Polson, et al. "Relationship of Vibrio Species Infection and Elevated Temperatures to Yellow Blotch/Band Disease in Caribbean Corals." Applied and Environmental Microbiology 70, no. 11 (2004): 6855–64. http://dx.doi.org/10.1128/aem.70.11.6855-6864.2004.

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ABSTRACT The bacterial and temperature factors leading to yellow blotch/band disease (YBD), which affects the major reef-building Caribbean corals Montastrea spp., have been investigated. Groups of bacteria isolated from affected corals and inoculated onto healthy corals caused disease signs similar to those of YBD. The 16S rRNA genes from these bacteria were sequenced and found to correspond to four Vibrio spp. Elevating the water temperature notably increased the rate of spread of YBD on inoculated corals and induced greater coral mortality. YBD-infected corals held at elevated water tempera

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Garren, Melissa, and Farooq Azam. "New Method for Counting Bacteria Associated with Coral Mucus." Applied and Environmental Microbiology 76, no. 18 (2010): 6128–33. http://dx.doi.org/10.1128/aem.01100-10.

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ABSTRACT The ability to count bacteria associated with reef-building corals in a rapid, reliable, and cost-effective manner has been hindered by the viscous and highly autofluorescent nature of the coral mucus layer (CML) in which they live. We present a new method that disperses bacterial cells by trypsinization prior to 4′,6-diamidino-2-phenylindole (DAPI) staining and quantification by epifluorescence microscopy. We sampled seawater and coral mucus from Porites lobata from 6 reef sites influenced by wastewater intrusion and 2 reef sites unaffected by wastewater in Hawaii. Bacterial and zoox

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10

Purnomo, Pujiono Wahyu. "Zooxanthellae Life Model and Massalization Growth in the Artificial Environment Waters." Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology 6, no. 1 (2012): 46–54. http://dx.doi.org/10.14710/ijfst.6.1.46-54.

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Zooxanthellae are part of the phototropic dinoflagellates. This organism always live as symbiotically with several marine invertebrates. Relationship between zooxanthellae and coral are mutualistic with the transfer nutritif and phisiologis character. With this character, no coral can live without zooxanthellae. Zooxanthellae have vital control on the coral and sessile life. Model of relationship between zooxanthellae and coral are adopted in the artificial environment for take the massalization culture zooxanthellae in the artificial environment. This study was purposed to : (a) Evaluating of

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11

Fu, Jian-Rong, Jie Zhou, Yan-Ping Zhang, and Li Liu. "Effects of Caulerpa taxifolia on Physiological Processes and Gene Expression of Acropora hyacinthus during Thermal Stress." Biology 11, no. 12 (2022): 1792. http://dx.doi.org/10.3390/biology11121792.

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An increasing ecological phase shift from coral-dominated reefs to macroalgae-dominated reefs as a result of anthropogenic impacts, such as eutrophication, sedimentation, and overfishing, has been observed in many reef systems around the world. Ocean warming is a universal threat to both corals and macroalgae, which may alter the outcome of competition between them. Therefore, in order to explore the effects of indirect and direct exposure to macroalgae on the physiological, biochemical, and genetic expression of corals at elevated temperature, the coral Acropora hyacinthus and highly invasive

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12

Purnomo, Pujiono Wahyu. "Genetic Diversity of Zooxanthellae from Several Host in the Coral Reef Waters at Bokor Island Jepara." Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology 7, no. 1 (2011): 39–45. https://doi.org/10.14710/ijfst.7.1.39-45.

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In the life history of coral, which is almost no corals living without zooxanthellae. Some clade of zooxanthellae have been identified and found. Studies on clade of zooxanthellae contributes to the diversity of the information andexplanations which provides for the meaning of the phenomenon of fluctuations in coral reefs, include at around coral reef waters of Bokor Island Jepara. This study aims to evaluate the diversity of zooxanthellae derived from several types of hosts and distribution of its existence. Research was conducted at the Brackishwater Aquaculture Development Centre (BBPBAP) J

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13

Hirose, Mamiko, and Michio Hidaka. "Early Development of Zooxanthella-containing Eggs of the Corals Porites cylindrica and Montipora digitata: The Endodermal Localization of Zooxanthellae." Zoological Science 23, no. 10 (2006): 873–81. http://dx.doi.org/10.2108/zsj.23.873.

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14

LaJeunesse, Todd C. "Zooxanthellae." Current Biology 30, no. 19 (2020): R1110—R1113. http://dx.doi.org/10.1016/j.cub.2020.03.058.

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Salim, Resni Agustina, Ratna Diyah Palupi, and Ira. "DENSITAS ZOOXANTHELLAE KARANG FOLIOSE PADA KEDALAMAN BERBEDA (ZONA TERUMBU KARANG) DI PERAIRAN WAWORAHA KECAMATAN SOROPIA." Jurnal Sapa Laut (Jurnal Ilmu Kelautan) 5, no. 2 (2020): 139. http://dx.doi.org/10.33772/jsl.v5i2.12168.

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Zooxanthellae merupakan mikroalga yang berperan penting bagi pertumbuhan karang. Penelitian ini bertujuan untuk mengetahui densitas zooxanthellae karang foliose pada 3 zona terumbu karang yang berbeda (reef flat, reef crest, reef slope) di Perairan Waworaha kecamatan soropia, Konawe. Pengambilan data telah dilakukan pada April sampai Mei 2017 melalui dua tahapan yaitu pengambilan sampel jaringan karang foliose di perairan dan perhitungan zooxanthellae di laboratorium.. Pengambilan sampel karang foliose dilakukan dengan metode koleksi bebas (free handpicking) dengan mengunakan alat SCUBA sedang

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16

Pangaribuan, Tumpal Hasudungan, Prijadi Soedarsono, and Churun Ain. "HUBUNGAN KANDUNGAN NITRAT DAN FOSFAT DENGAN DENSITAS ZOOXANTHELLAE PADA POLIP KARANG Acropora sp. DI PERAIRAN TERUMBU KARANG PULAU MENJANGAN KECIL, KARIMUN JAWA." Management of Aquatic Resources Journal (MAQUARES) 2, no. 4 (2013): 136–45. http://dx.doi.org/10.14710/marj.v2i4.4277.

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Terumbu karang merupakan ekosistem pesisir yang memiliki produktivitas tinggi. Nutrien merupakan salah satu faktor penentu terpeliharanya produktivitas perairan. Adanya asumsi ketersediaan cahaya, keberadaan zooxanthellae dan nutrien menjadi faktor yang penting. Permasalahannya adalah, apakah dukungan ini didapatkan dari ketersediaan nutrien di lingkungan perairan atau di dalam polip karang. Terkait dengan hal tersebut, maka penelitian ini akan mempelajari dukungan nutrien di dalam polip karang dan pengaruhnya terhadap keberadaan zooxanthellae. Tujuan penelitian ini untuk mengetahui kondisi pe

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17

Ambariyanto, Ambariyanto, and Alferd Y. Ko'ou. "Are Zooxanthellae Really Sensitive? Response of Zooxanthellae Size Exposed to Several Pollutants." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 22, no. 4 (2017): 213. http://dx.doi.org/10.14710/ik.ijms.22.4.213-218.

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Pollution is one of the important issues faced by marine resources including zooxanthellae, which is known to be very sensitive to environmental changes. Some pollutants have been reported to have adverse effects on zooxanthellae, however, their sensitivity in regards to changes on cell size of these algae has not been widely explored. This study examined the effects of pollutants on the sensitivity of zooxanthellae through changes in size. Zooxanthellae were isolated from corals Porites lutea, Acropora aspera, and Montipora digitata collected from Panjang Island, Jepara, Indonesia. These alga

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18

Ambariyanto, Ambariyanto, Diah Permata Wijayanti, Munasik Munasik, et al. "Are Zooxanthellae Really Sensitive? Response of Zooxanthellae Size Exposed to Several Pollutants." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 23, no. 1 (2018): 19. http://dx.doi.org/10.14710/ik.ijms.23.1.19-24.

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Pollution is one of the important issues faced by marine resources including zooxanthellae, which is known to be very sensitive to environmental changes. Some pollutants have been reported to have adverse effects on zooxanthellae, however, their sensitivity in regards to changes on cell size of these algae has not been widely explored. This study examined the effects of pollutants on the sensitivity of zooxanthellae through changes in size. Zooxanthellae were isolated from corals Porites lutea, Acropora aspera, and Montipora digitata collected from Panjang Island, Jepara, Indonesia. These alga

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19

Kritiyasari, Dwi, Pujiono Wahyu Purnomo, and Suryanti Suryanti. "PERTUMBUHAN ZOOXANTHELLAE BERDASARKAN TIGA SPESIES KARANG BERBEDA DARI PERAIRAN PULAU PANJANG, JEPARA." Maspari Journal : Marine Science Research 13, no. 1 (2021): 11–24. http://dx.doi.org/10.56064/maspari.v13i1.13443.

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Terumbu karang merupakan salah satu ekosistem khas perairan pesisir tropik, yang ditandai dengan keanekaragaman jenis biota tinggi yang hidup di dalamnya. Zooxanthellae adalah salah satu penyusun karang yang paling penting. Penelitian ini bertujuan untuk mengetahui perbedaan laju pertumbuhan Zooxanthellae dari tiga jenis inang karang yang berbeda dan juga mengetahui faktor fisik yang mempengaruhi pertumbuhan Zooxanthellae. Metode yang digunakan dalam penelitian ini yaitu metode eksperimen. Penelitian ini dilaksanakan pada bulan November – Desember 2019 di Laboratorium Pengembangan Wilayah Pant

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20

Coates, Anthony G., and Jeremy B. C. Jackson. "Clonal growth, algal symbiosis, and reef formation by corals." Paleobiology 13, no. 4 (1987): 363–78. http://dx.doi.org/10.1017/s0094837300008988.

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The occurrence of zooxanthellae in Recent scleractinian corals is strongly correlated with their growth form, corallite size, and degree of morphological integration of corallites. The great majority of zooxanthellate corals are multiserial with small, highly integrated corallites, whereas most corals lacking zooxanthellae are solitary or uniserial colonial forms with large, poorly integrated corallites. Beginning in the Jurassic, fossil scleractinian faunas are morphologically similar to Recent faunas dominated by zooxanthellate species, strongly implying that most scleractinians contained zo

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Jones, Ross J., and D. Yellowlees. "Regulation and control of intracellular algae (= zooxanthellae) in hard corals." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 352, no. 1352 (1997): 457–68. http://dx.doi.org/10.1098/rstb.1997.0033.

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To examine algal (= zooxanthellae) regulation and control, and the factors determining algal densities in hard corals, the zooxanthellae mitotic index and release rates were regularly determined in branch tips from a colony of a staghorn coral, Acropora formosa , recovering from a coral ‘bleaching’ event (the stress–related dissociation of the coral–algal symbiosis). Mathematical models based upon density–dependent decreases in the algal division frequency and increases in algal release rates during the post–bleaching recovery period accurately predict the observed recovery period (≈ 20 weeks)

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Mulyani, Maya Sri, Pujiono Wahyu Purnomo, and Supriharyono Supriharyono. "PENGARUH BERBAGAI TEMPERATUR TERHADAP PELEPASAN DENSITAS ZOOXANTHELLAE PADA KARANG Acropora sp. DALAM SKALA LABORATORIUM." Jurnal Pasir Laut 4, no. 1 (2020): 36–41. http://dx.doi.org/10.14710/jpl.2020.30525.

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Terumbu karang adalah ekosistem yang struktur utamanya berupa karang keras, tersusun oleh polip-polip karang yang bersimbiosis dengan alga zooxanthellae. Keberadaan zooxanthellae di dalam polip karang dipengaruhi oleh temperature. Pada temperatur perairan yang tinggi menyebabkan kematian karang akibat lepasnya zooxanthellae dari jaringannya; dan sebaliknya pada temperatur rendah dapat mendukung pertumbuhan dan perkembangan karang melalui peran zooxanthellae. Tujuan penelitian ini adalah untuk mengetahui pengaruh berbagai tingkat temperatur terhadap pelepasan zooxanthellae dan kemampuan recover

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23

Lakastri, Lavia, Pujiono Wahyu Purnomo, and Max Rudolf Muskananfola. "PENGARUH KEDALAMAN TERHADAP PRODUKTIVITAS PRIMER DAN DENSITAS ZOOXANTHELLAE PADA KARANG DOMINAN DI PULAU CEMARA KECIL, KARIMUNJAWA." Management of Aquatic Resources Journal (MAQUARES) 7, no. 4 (2018): 440–46. http://dx.doi.org/10.14710/marj.v7i4.22667.

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Pulau Cemara Kecil merupakan salah satu pulau yang dijadikan tujuan wisata di Kepulauan Karimunjawa. Terumbu karang merupakan ekosistem pesisir yang memiliki produktivitas tinggi. Nitrat merupakan nutrien sebagai salah satu faktor penentu terpeliharanya produktivitas perairan. Penelitian ini mempelajari perbedaan jumlah sel zooxanthellae yang berpengaruh terhadap nilai produktivitas primernya dan kandungan nitrat yang diserap terhadap perbedaan kedalaman. Tujuan penelitian ini untuk mengetahui perbedaan produktivitas primer bersih (NPP) ekosistem terumbu karang, kandungan nitrat dan densitas z

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Muhammad, Fadel, Neviaty Putri Zamani, Meutia Samira Ismet, and Muhammad Irlan Assidiq Kusuma Ramadhan. "The Effect of Plastic Waste Attachment on Branching Coral to Zooxanthellae Abundance in the Kelapa Dua Island Waters, Seribu Islands." Jurnal Ilmiah Perikanan dan Kelautan 13, no. 1 (2021): 29. http://dx.doi.org/10.20473/jipk.v13i1.18146.

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HighlightLight intensity from plastic waste was positively correlated with the abundance of zooxanthellae in corals.The abundance of zooxanthellae between sack plastic and clear plastic treatment tended to be the same.The treatment of packaging plastic was treated with the lowest light intensity.The treatment of black plastic was the treatment that produced the lowest abundance of zooxanthellae. AbstractCoral growth in Indonesia was being disrupted due to the continued threat of environmental change, such as littering to the beach. This study aimed to analyze the effect of the attachment of di

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Rembet, Unstain N. W. J. "Simbiosis Zooxanthellae dan Karang Sebagai Indikator Kualitas Ekosistem Terumbu Karang." JURNAL ILMIAH PLATAX 1, no. 1 (2012): 37. http://dx.doi.org/10.35800/jip.1.1.2012.502.

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TINJAUAN TEORITIS SIMBIOSIS ZOOXANTHELLAE DAN KARANG SEBAGAI INDIKATOR KUALITAS EKOSISTEM TERUMBU KARANG Unstain NWJ Rembet1 ABSTRACT A symbiotic process between zooxanthellae and corals can support the adaptative factors in terms of natural vulnerability criteria. The proposed consideration are 1) the symbiosis between zooxanthellae and corals provides phenomenal contributions to coral evolutionary process and 2) the criteria used by Gomez and Yap have been merely based on live coral cover that is still becoming key tools for the evaluation of coral reef health status measure. These criteria

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Yang, Ziwei, Chuanliang Wu, Junying Zhu, et al. "Winter and Summer Variations in the Physiological Parameters of Two Scleractinian Corals in Sanya Bay." Water 15, no. 16 (2023): 2954. http://dx.doi.org/10.3390/w15162954.

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Coral reefs in Sanya Bay have been degrading in recent decades under climate change and human activities. To identify physiological changes of scleractinian corals and corresponding influencing factors, aquatic environmental factors and physiological parameters of Pocillopora damicornis, Porites pukoensis and their symbiotic zooxanthellae were examined in four Sanya Bay coral reef areas in December 2020 (winter) and July 2021 (summer). The density and chlorophyll a+c2 content of the symbiotic zooxanthellae were significantly high in winter and low in summer. Superoxide dismutase and caspase3 a

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Rizka, Raema Farah, Pujiono Wahyu Purnomo, and Aninditia Sabdaningsih. "PENGARUH TOTAL SUSPENDED SOLID (TSS) TERHADAP DENSITAS Zooxhanthellae PADA KARANG Acropora sp. DALAM SKALA LABORATORIUM." Jurnal Pasir Laut 4, no. 2 (2020): 95–101. http://dx.doi.org/10.14710/jpl.2020.33689.

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Sedimentasi merupakan faktor utama yang mengakibatkan kematian karang. Konsentrasi TSS yang tinggi cenderung menyebabkan sedimentasi yang tinggi. Pengaruh TSS pada perairan menyebabkan cahaya yang masuk kedalam perairan terhambat, sehingga dapat menurunkan aktivitas fotosintesis pada zooxanthellae. Sedimen yang terdeposit juga akan menutupi permukaan polip karang sehingga akan meningkatkan kebutuhan energy metabolic untuk menghilangkannya kembali. Tujuan penelitian untuk mengetahui pengaruh TSS terhadap densitas zooxanthellae dan hubungannya dengan fotosintesis dan respirasi. Penelitian dilaks

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28

Hirose, M., RA Kinzie, and M. Hidaka. "Early development of zooxanthella-containing eggs of the corals Pocillopora verrucosa and P. eydouxi with special reference to the distribution of zooxanthellae." Biological Bulletin 199, no. 1 (2000): 68–75. http://dx.doi.org/10.2307/1542708.

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29

Vorobyeva, O. A., I. A. Ekimova, and V. V. Malakhov. "MORPHOLOGICAL ORGANIZATION OF CERATA IN A NUDIBRANCH <i>PTERAEOLIDIA SEMPERI</i> (GASTROPODA, NUDIBRANCHIA)." Доклады Российской академии наук. Науки о жизни 508, no. 1 (2023): 68–72. http://dx.doi.org/10.31857/s2686738922600558.

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The morphology of cerata and cnidosacs of nudibibranch mollusc Pteraeolidia semperi (Bergh, 1870) has been studied. From gastrodermal channel of the digestive gland the fine tubules arise, which contains cells with symbiotic algae – zooxanthellae. The cnidosac stores large kleptocnides. Thus. P. semperi represents a unique example of symbiotrophic feeding specialization. Morphological organization of its cerata and the digestive gland demonstrates several adaptation for cultivation of zooxanthellae providing proper conditions for active photosynthesis of zooxanthellae.

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Guo, Zhuojun, Xin Liao, Tingyu Han, Junyuan Chen, Chunpeng He, and Zuhong Lu. "Full-Length Transcriptomics Reveal the Gene Expression Profiles of Reef-Building Coral Pocillopora damicornis and Symbiont Zooxanthellae." Diversity 13, no. 11 (2021): 543. http://dx.doi.org/10.3390/d13110543.

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Since the last century, episodes of coral reef bleaching and mortality have occurred almost annually in tropical or subtropical seas. When the temperature exceeds the tolerant limit of a coral–zooxanthellae holobiont, it induces physiological stress and disrupts the vulnerable fine-tuned balance between the two partners, leading to bleaching. The gene expression profiles of a scleractinian coral and its symbiotic zooxanthellae can offer important information with which to decipher this balanced relationship at the functional level of genes. Here, we sequence a full-length transcriptome of a we

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Lieng, Lieng, Efriyeldi, and Thamrin. "DENSITY ZOOXANTHELLA BASED ON THE LIFE FORM OF CORAL ON MARAK ISLAND WEST SUMATERA PROVINCE." Asian Journal of Aquatic Sciences 3, no. 3 (2020): 209–16. http://dx.doi.org/10.31258/ajoas.3.3.209-216.

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This study aims to determine differences in zooxanthella density based on the life forms of coral Acropora Branching, Submassive Acropora, Branching, Foliose, Heliopora and comparing zooxanthella densities between the forms of coral form. This study was conducted in January-February 2020 on Marak Island, Nagari Sungai Pinang, West Sumatera Province. Zooxanthella density was calculated at the Marine Biology Laboratory, Department of Marine Sciences, University of Riau. The survey methode was used in this study, where the data collected was primary data. Coral Sampling was done by free collectio

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Chaudhari, Lochan, and Charvi Trivedi. "Inducing Heat Tolerance in Corals Using Genetic Modification in Host and Symbiont Simultaneously." ECS Transactions 107, no. 1 (2022): 14655–63. http://dx.doi.org/10.1149/10701.14655ecst.

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Corals live in a symbiotic relationship with photosynthetic algae called zooxanthellae. Coral bleaching occurs when the zooxanthellae are expelled out of the corals, with as little as two degrees increase in water temperature. Our proposed hypothesis is that establishing a symbiotic relationship between genetically modified corals and genetically modified algae (zooxanthellae) can provide better heat tolerance towards the warming oceans. There is a lot of research underway in genetically modifying either corals or zooxanthellae. We propose to combine these various research into a single projec

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Hidayah, Nur, Pujiono Wahyu Purnomo, and Diah Ayuningrum. "Pengaruh Asidifikasi Terhadap Densitas Zooxanthellae dan Kelulushidupan Karang Acropora sp. dalam Skala Laboratorium." Management of Aquatic Resources Journal (MAQUARES) 11, no. 1 (2022): 36–42. https://doi.org/10.14710/marj.v11i1.29292.

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Asidifikasi atau pengasaman laut merupakan peristiwa menurunnya pH air laut disebabkan karena penyerapan karbondioksida ke atmosfer. Ketika karbondioksida di atmosfer meningkat, lautan akan menyerapnya dan mengubah menjadi asam karbon. pH air laut yang menurun akan mempengaruhi kelangsungan hidup karang dan dapat menyebabkan kematian hewan karang. Tujuan penelitian ini adalah untuk mengetahui pengaruh pH terhadap densitas zooxanthellae serta hubungannya dengan fotosintesis dan respirasi. Penelitian dilaksanakan pada November-Desember 2019 di Laboratorium Pengembangan Wilayah Pantai Universitas

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Hii, Yii-Siang, Abol Munafi Ambok Bolong, Teng-Teng Yang, and Hock-Chark Liew. "Effect of Elevated Carbon Dioxide on Two Scleractinian Corals:Porites cylindrica(Dana, 1846) andGalaxea fascicularis(Linnaeus, 1767)." Journal of Marine Biology 2009 (2009): 1–7. http://dx.doi.org/10.1155/2009/215196.

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This study reveals the effect of elevatedpCO2onPorites cylindricaandGalaxea fascicularis. The corals responded differently under elevatedpCO2. Zooxanthellae cell density, cell mitotic index, and photosynthesis rate ofP. cylindricadecreased drastically under the elevatedpCO2. At the end of the experiment,P. cylindricasuffered from a declining calcium carbonate precipitation rate.G. fascicularisincreased its respiration rate and expelled 71% of its symbiotic zooxanthellae algae under elevatedpCO2. Photosynthetic pigments in the remaining zooxanthellae algae increased from 1.85 to 11.5 times to s

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Hotmariyah, Hotmariyah, Munasik Munasik, and Puji Rahmadi. "Valuasi Ekosistem Terumbu Karang di Kawasan Konservasi Pulau Gili Matra menggunakan Analisis Emergy." Jurnal Kelautan Tropis 26, no. 1 (2023): 179–89. http://dx.doi.org/10.14710/jkt.v26i1.17134.

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The main problem in assessing coral reef ecosystems is selecting the right method to describe their ecological potential. The percentage of live coral cover has so far been used to indicate the condition of coral reefs. This assessment method is easy to apply but has not been able to describe the value of the ecosystem for the benefit of loss or damage to coral reef ecosystems. Further analysis based on energy use for the delivery of ecosystem services is needed, which is called Emergy analysis. This study aims to determine the value of coral reef ecosystems in the Pulau Gili Matra Marine Prot

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Liu, Yunqing, Xin Liao, Tingyu Han, et al. "Full-Length Transcriptome Sequencing of the Scleractinian Coral Montipora foliosa Reveals the Gene Expression Profile of Coral–Zooxanthellae Holobiont." Biology 10, no. 12 (2021): 1274. http://dx.doi.org/10.3390/biology10121274.

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Coral–zooxanthellae holobionts are one of the most productive ecosystems in the ocean. With global warming and ocean acidification, coral ecosystems are facing unprecedented challenges. To save the coral ecosystems, we need to understand the symbiosis of coral–zooxanthellae. Although some Scleractinia (stony corals) transcriptomes have been sequenced, the reliable full-length transcriptome is still lacking due to the short-read length of second-generation sequencing and the uncertainty of the assembly results. Herein, PacBio Sequel II sequencing technology polished with the Illumina RNA-seq pl

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Suryono, Chrisna Adhi. "Uji Lethal Concentration (LC) Senyawa Cyanida pada Karang Tingkat Laboratatorium dalam Kaitannya sebagai Bahan Penangkap Ikan Hias." Jurnal Kelautan Tropis 18, no. 3 (2016): 160. http://dx.doi.org/10.14710/jkt.v18i3.529.

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Salah satu cara menagkap ikan hias yang efektip adalah dengan cara membius dengan menggunakan cyanida. Tujuan dari penelitian ini adalah untuk mengetahui letathal concetration senyawa cyanida terhadap karang Porites lutea dan Galaxea fascicularis. Rancangan penelitian yang digunakan adalah split plot RAK dengan ulangan 3 kali. Jenis karang merupakan kelompok utama dan konsentrasi cyanida merupakan sub-kelompok. Pengamatan yang diamati adalah jumlah zooxanthellae dan prosentase kematian karang. Hasil penelitian menunjukan semakin tinggi konsentrasi cyanida menunjukan semakin tinggi prosentase k

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Khuzma, Nur Latifah, Agung Suryanto, and Pujiono Wahyu Purnomo. "HUBUNGAN KANDUNGAN NITRAT DENGAN DENSITAS ZOOXANTHELLAE PADA BEBERAPA JENIS KARANG DI REEF FLAT PULAU PARI KEPULAUAN SERIBU JAKARTA." Management of Aquatic Resources Journal (MAQUARES) 5, no. 4 (2016): 293–301. http://dx.doi.org/10.14710/marj.v5i4.14423.

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ABSTRAKPulau Pari merupakan salah satu pulau yang berada di tengah-tengah gugusan. Terumbu karang merupakan ekosistem pesisir yang memiliki produktivitas tinggi. Nitrat merupakan nutrien sebagai salah satu faktor penentu terpeliharanya produktivitas perairan, maka penelitian ini akan mempelajari dukungan nitrat di dalam polip karang dan pengaruhnya terhadap keberadaan zooxanthellae. Tujuan dari penelitian ini adalah untuk mengetahui keberagaman jenis karang, faktor lingkungan yang mempengaruhi karang, kandungan nitrat dan densitas zooxanthellae pada beberapa jenis karang di reef flat Pulau Par

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Patthanasiri, Kamonphon, Thaithaworn Lirdwitayaprasit, Thamasak Yeemin, Ing-on Thongcamdee, and Nantapak Potisarn. "Effects of Temperature and Salinity on Coral Bleaching in Laboratory." International Journal of Environmental Science and Development 13, no. 1 (2022): 21–25. http://dx.doi.org/10.18178/ijesd.2022.13.1.1367.

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Coral bleaching occurs when cell density or the concentration of photosynthetic pigments of the endosymbionts, zooxanthellae are decreased. This incident may possibly be caused by some environmental stresses, especially under conditions of elevated temperature, decrease in water salinity, or a combination of these factors. To determine the role of temperature and salinity on zooxanthellae and coral bleaching this study was conducted in aquariums under laboratory conditions on cauliflower coral Pocillopora damicornis. The samples were collected from three sites around Samaesan Island, Chonburi,

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Rifa’i, M. Ahsin, Ambo Tuwo, Budimawan Budimawan, and Andi Niartiningsih. "Densitas Simbion Alga Zooxanthellae pada Anemon Laut Stichodactyla gigantea Alam dan Hasil Reproduksi Aseksual." Jurnal Natur Indonesia 15, no. 1 (2014): 15. http://dx.doi.org/10.31258/jnat.15.1.15-23.

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The aims of this research were to discover the density of algae symbiont of zooxanthellae in the giant carpet anemone (Stichodactyla gigantea) from the nature and the asexual reproduction by longitudinal body fragmentation technique. The research was conducted from October 2007 to July 2008, in The Hatchery of University of Hasanuddin Marine Station in Barrang Lompo Island for seed production and coral reefs area of Barrang Lompo Island for the implementation of culture. The series of study was started with parental collection and acclimatization of anemones, fragmentation of the body, culturi

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Fine, Maoz, Laura Steindler, and Yossi Loya. "Endolithic algae photoacclimate to increased irradiance during coral bleaching." Marine and Freshwater Research 55, no. 1 (2004): 115. http://dx.doi.org/10.1071/mf03120.

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The photoacclimation of endolithic algae (of the genus Ostreobium) inhabiting the skeleton of the Mediterranean coral Oculina patagonica during a bleaching event was examined. Pulse amplitude modulated (PAM) chlorophyll fluorescence techniques in situ were used to assess the photosynthetic efficiency of endolithic algae in the coral skeleton and the symbiotic dinoflagellates (zooxanthellae) in the coral tissue. Relative photosynthetic electron transport rates (ETRs) of the endolithic algae under bleached areas of the colony were significantly higher than those of endolithic algae from a health

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Wooldridge, S. A. "Breakdown of the coral-algae symbiosis: towards formalising a linkage between warm-water bleaching thresholds and the growth rate of the intracellular zooxanthellae." Biogeosciences 10, no. 3 (2013): 1647–58. http://dx.doi.org/10.5194/bg-10-1647-2013.

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Abstract. Impairment of the photosynthetic machinery of the algal endosymbiont ("zooxanthellae") is the proximal driver of the thermal breakdown of the coral-algae symbiosis ("coral bleaching"). Yet, the initial site of damage, and early dynamics of the impairment are still not well resolved. In this perspective essay, I consider further a recent hypothesis which proposes an energetic disruption to the carbon-concentrating mechanisms (CCMs) of the coral host, and the resultant onset of CO2-limitation within the photosynthetic "dark reactions" as a unifying cellular mechanism. The hypothesis id

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Mien, Pham Thi, Nguyen Kim Hanh, Nguyen Minh Hieu, et al. "A study on bacteria associated with three hard coral species from Ninh Thuan waters by epifluorescence and most diluted culture method." Tạp chí Khoa học và Công nghệ biển 19, no. 2 (2019): 271–83. http://dx.doi.org/10.15625/1859-3097/19/2/10814.

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Coral associated bacteria and their host are currently one of the interested issues for research and scientists worldwide. The densities of zooxanthellae and bacteria associated with three most prevalent species Acropora hyacinthus, Acropora muricata and Acropora robusta in Hang Rai, Ninh Thuan was evaluated over time by staining with SYBR Gold and direct counting with epifluorescence method. The most dominant bacteria were isolated by culture dependent method. The densities of zooxanthellae and bacteria ranged from 0.39–1.83×107 cell/g, and 0.83–2.52×108 cell/g, respectively. Bacterial densit

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Banin, Ehud, Sanjay K. Khare, Fred Naider, and Eugene Rosenberg. "Proline-Rich Peptide from the Coral PathogenVibrio shiloi That Inhibits Photosynthesis of Zooxanthellae." Applied and Environmental Microbiology 67, no. 4 (2001): 1536–41. http://dx.doi.org/10.1128/aem.67.4.1536-1541.2001.

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ABSTRACT The coral-bleaching bacterium Vibrio shiloibiosynthesizes and secretes an extracellular peptide, referred to as toxin P, which inhibits photosynthesis of coral symbiotic algae (zooxanthellae). Toxin P was produced during the stationary phase when the bacterium was grown on peptone or Casamino Acids media at 29°C. Glycerol inhibited the production of toxin P. Toxin P was purified to homogeneity, yielding the following 12-residue peptide: PYPVYAPPPVVP (molecular weight, 1,295.54). The structure of toxin P was confirmed by chemical synthesis. In the presence of 12.5 mM NH4Cl, pure natura

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van Oppen, Madeleine J. H. "Mode of zooxanthella transmission does not affect zooxanthella diversity in acroporid corals." Marine Biology 144, no. 1 (2003): 1–7. http://dx.doi.org/10.1007/s00227-003-1187-4.

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Wooldridge, S. A. "Breakdown of the coral-algae symbiosis: towards formalising a linkage between warm-water bleaching thresholds and the growth rate of the intracellular zooxanthellae." Biogeosciences Discussions 9, no. 7 (2012): 8111–39. http://dx.doi.org/10.5194/bgd-9-8111-2012.

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Abstract. Impairment of the photosynthetic machinery of the algal endosymbiont ("zooxanthellae") is the proximal trigger for the thermal breakdown of the coral-algae symbiosis ("coral bleaching"). Yet, the primary site of thermal damage is not well resolved. In this perspective essay, I consider further a recent hypothesis which proposes an energetic disruption to the carbon-concentrating mechanisms (CCMs) of the coral host, and the resultant onset of CO2-limitation within the photosynthetic "dark reactions", as a unifying cellular mechanism. The hypothesis identifies the enhanced retention of

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Bedwell-Ivers, Hayley E., Marguerite S. Koch, Katherine E. Peach, Luke Joles, Elizabeth Dutra, and Carrie Manfrino. "The role of in hospite zooxanthellae photophysiology and reef chemistry on elevated pCO2 effects in two branching Caribbean corals: Acropora cervicornis and Porites divaricata." ICES Journal of Marine Science 74, no. 4 (2016): 1103–12. http://dx.doi.org/10.1093/icesjms/fsw026.

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Previous studies suggest uniform reductions in coral calcification under ocean acidification (OA); however, greater tolerance has been observed under natural diel metabolic signals present on reefs. In addition, few studies have examined the role of in hospite zooxanthellae energetics on coral OA tolerance. In this study, we examined zooxanthellae photosynthesis and coral calcification responses using seawater with natural metabolic dissolved inorganic carbon (DIC) dynamics from a fringing back reef on Little Cayman Island, Caribbean. The experimental design included Acropora cervicornis and P

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Lau, Yee Wah, Frank R. Stokvis, Yukimitsu Imahara, and James D. Reimer. "The stoloniferous octocoral, Hanabira yukibana, gen. nov., sp. nov., of the southern Ryukyus has morphological and symbiont variation." Contributions to Zoology 88, no. 1 (2019): 54–77. http://dx.doi.org/10.1163/18759866-20191355.

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Stoloniferan octocorals (Cnidaria: Anthozoa: Octocorallia: Alcyonacea) are a relatively unexplored fauna in the Ryukyus (southern Japan), known to be a tropical marine region of high biodiversity and endemism of species. Specimens of stoloniferous octocorals were collected during fieldwork along the coasts of two islands (Okinawa and Iriomote) in the Okinawa Prefecture. Despite their phenotypic polyp variation, this study shows their morphological and molecular uniqueness, leading to the description of a new genus with a single species: Hanabira yukibana, gen. nov., sp. nov. They are placed wi

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BLANK, R. J. "Evolutionary Differentiation in Gymnodinioid Zooxanthellae." Annals of the New York Academy of Sciences 503, no. 1 Endocytobiolo (1987): 530–33. http://dx.doi.org/10.1111/j.1749-6632.1987.tb40635.x.

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Wooldridge, S. A. "A hypothesis linking sub-optimal seawater <i>p</i>CO<sub>2</sub> conditions for cnidarian-<i>Symbiodinium</i> symbioses with the exceedence of the interglacial threshold (> 260 ppmv)." Biogeosciences Discussions 8, no. 6 (2011): 11215–53. http://dx.doi.org/10.5194/bgd-8-11215-2011.

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Abstract. Most scleractinian corals and many other cnidarians host intracellular photosynthetic dinoflagellate symbionts ("zooxanthellae"). The zooxanthellae contribute to host metabolism and skeletogenesis to such an extent that this symbiosis is well recognised for its contribution in creating the coral reef ecosystem. The stable functioning of cnidarian symbioses is however dependent upon the host's ability to maintain demographic control of its algal partner. In this review, I explain how the modern envelope of seawater conditions found within many coral reef ecosystems (characterised by e

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