Relevant bibliographies by topics / Hexacorallia

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Academic literature on the topic 'Hexacorallia'

Author: Grafiati
Published: 25 May 2024

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Journal articles on the topic "Hexacorallia"

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Rosental, Benyamin. "Exploring hexacorallian models to aid corals affected by climate change." Open Access Government 38, no. 1 (April 13, 2023): 446–47. http://dx.doi.org/10.56367/oag-038-10078.

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Exploring hexacorallian models to aid corals affected by climate change In this interview, Benyamin Rosental, PhD, from the Shraga Segal Department of Microbiology, Immunology, and Genetics, looks toward hexacorallian models to transplant stem cells to corals affected by global warming. Why are you researching stem cell transplantation on hexacorallian models? The first step of our research is with our model sea anemones, which are part of the hexacorallia subclass along with stony corals. The purpose of the tool that we are developing is to develop stem cell-based therapies for corals.
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RYLAND, JOHN S. "Reproduction in Zoanthidea (Anthozoa: Hexacorallia)." Invertebrate Reproduction & Development 31, no. 1-3 (January 1997): 177–88. http://dx.doi.org/10.1080/07924259.1997.9672575.

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Wagner, Daniel, Xavier Pochon, Leslie Irwin, Robert J. Toonen, and Ruth D. Gates. "Azooxanthellate? Most Hawaiian black corals contain Symbiodinium." Proceedings of the Royal Society B: Biological Sciences 278, no. 1710 (October 20, 2010): 1323–28. http://dx.doi.org/10.1098/rspb.2010.1681.

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The ecological success of shallow-water reef-building corals (Hexacorallia: Scleractinia) is framed by their intimate endosymbiosis with photosynthetic dinoflagellates in the genus Symbiodinium (zooxanthellae). In contrast, the closely related black corals (Hexacorallia: Anthipatharia) are described as azooxanthellate (lacking Symbiodinium ), a trait thought to reflect their preference for low-light environments that do not support photosynthesis. We examined 14 antipatharian species collected between 10 and 396 m from Hawai'i and Johnston Atoll for the presence of Symbiodinium using molecular typing and histology. Symbiodinium internal transcribed spacer-2 (ITS-2) region sequences were retrieved from 43 per cent of the antipatharian samples and 71 per cent of the examined species, and across the entire depth range. The ITS-2 sequences were identical or very similar to those commonly found in shallow-water scleractinian corals throughout the Pacific. Histological analyses revealed low densities of Symbiodinium cells inside antipatharian gastrodermal tissues (0–92 cells mm −3 ), suggesting that the Symbiodinium are endosymbiotic. These findings confirm that the capacity to engage in endosymbiosis with Symbiodinium is evolutionarily conserved across the cnidarian subclass Hexacorallia, and that antipatharians associate with Symbiodinium types found in shallow-water scleractinians. This study represents the deepest record for Symbiodinium to date, and suggests that some members of this dinoflagellate genus have extremely diverse habitat preferences and broad environmental ranges.
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DALY, MARYMEGAN, DAPHNE G. FAUTIN, and VALERIE A. CAPPOLA. "Systematics of the Hexacorallia (Cnidaria: Anthozoa)." Zoological Journal of the Linnean Society 139, no. 3 (November 2003): 419–37. http://dx.doi.org/10.1046/j.1096-3642.2003.00084.x.

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TURAK, EMRE, LYNDON DEVANTIER, and MARK ERDMANN. "Euphyllia baliensis sp. nov. (Cnidaria: Anthozoa: Scleractinia: Euphylliidae): a new species of reef coral from Indonesia." Zootaxa 3422, no. 1 (August 14, 2012): 52. http://dx.doi.org/10.11646/zootaxa.3422.1.3.

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Euphyllia baliensis sp. nov. (Hexacorallia: Scleractinia: Euphylliidae) is described from 10 specimens from Bali, Indone-sia. This species forms phaceloid colonies, and is distinguished morphologically from others in its genus by its compara-tively very small corallites (averaging 3 mm diameter) and much shorter, thinner, lightly calcified branches. It also exhibitsan unusual pattern for Hexacorallia in having four or eight primary and secondary septa. Living corals typically havefleshy polyps extended during the day. Tentacles are ‘anchor’, ‘kidney’ or ‘hammer’ shaped at their tips, occasionally withadditional smaller bulbous protuberances, the latter resembling ‘mittens’ or ‘gloves’. Tentacles are dull to dark reddish-brown with lime green bases and cream tips, becoming bluish on retraction. Type specimens were collected from 27-37 m depth off the central eastern coast of Bali, Indonesia. To date the species has not been reported from any other locality.
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Santos, Thaís Barbosa, James D. Reimer, Fabián H. Acuña, and Sérgio N. Stampar. "Diversity of Feeding in Anthozoa (Cnidaria): A Systematic Review." Diversity 12, no. 10 (October 20, 2020): 405. http://dx.doi.org/10.3390/d12100405.

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In this study, we performed a bibliographical review examining the scientific literature on “feeding in Anthozoa” for the period from 1890 to 2019, using the scientific database Google Scholar, supplemented with additional literature. This study categorized published scientific papers on this topic by decade of publication, target taxa, variability of species studied in each order and main themes studied. As a result, 153 studies were found, and based on their content, it was observed that within Anthozoa, there has been a concentration of feeding studies on species in the orders Actiniaria (Hexacorallia), Scleractinia (Hexacorallia), and Alcyonacea (Octocorallia). This indicates that the other remaining orders of the group have been comparatively neglected with regards to their feeding aspects. Therefore, as data on feeding in some groups of Anthozoa are scarce, studies need to be carried out to fill the gaps that permeate this important benthic group, in order to better understand their ecology.
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Talice, Shani, Shany K. Barkan, Grace A. Snyder, Aner Ottolenghi, Shir Eliachar, Ronit Ben-Romano, Shelly Oisher, et al. "Candidate stem cell isolation and transplantation in Hexacorallia." Developmental & Comparative Immunology 148 (November 2023): 105012. http://dx.doi.org/10.1016/j.dci.2023.105012.

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Fujii, Takuma, and James Davis Reimer. "A new family of diminutive zooxanthellate zoanthids (Hexacorallia: Zoantharia)." Zoological Journal of the Linnean Society 169, no. 3 (October 29, 2013): 509–22. http://dx.doi.org/10.1111/zoj.12075.

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Reimer, James, Angelo Poliseno, and Bert Hoeksema. "Shallow-water zoantharians (Cnidaria, Hexacorallia) from the Central Indo-Pacific." ZooKeys 444 (October 7, 2014): 1–57. http://dx.doi.org/10.3897/zookeys.444.7537.

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Reimer, James Davis, Kiyotaka Takishita, Shusuke Ono, Junzo Tsukahara, and Tadashi Maruyama. "Molecular Evidence Suggesting Interspecific Hybridization in Zoanthus spp. (Anthozoa: Hexacorallia)." Zoological Science 24, no. 4 (April 2007): 346–59. http://dx.doi.org/10.2108/zsj.24.346.

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Dissertations / Theses on the topic "Hexacorallia"

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Sinniger, Frédéric [Alain]. "Phylogénie et écologie moléculaires de l'ordre Zoantharia (Cnidaria : Hexacorallia)." Aix-Marseille 2, 2007. http://www.theses.fr/2007AIX22036.

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Cette thèse explore de nouvelles méthodes pour clarifier la position phylogénétique de l'ordre Zoantharia au sein des anthozoaires hexacoralliaires. En plus de s'intéresser à la position de cet ordre, ce travail cherche aussi à améliorer les connaissances taxonomiques sur les zoanthaires. Le séquençage de génomes mitochondriaux a permis de définir les relations phylogénétiques entre les différents ordres d'hexacoralliaires. Cette étude démontre aussi l'importance relative des réarrangements génomiques à des niveaux taxonomiques élevés chez ces anthozoaires. Différents marqueurs moléculaires ont été utilisés afin de clarifier la taxonomie de ce groupe et réexaminer la validité des caractères morphologiques et écologiques. Une méthode basée sur une combinaison de caractères moléculaires, écologiques et géographique est proposée pour identifier les zoanthaires au niveau spécifique. Ces différents caractères sont aussi utilisés pour décrire deux nouvelles espèces et proposer un nouveau genre
The purpose of this study was to explore new methods to solve the position of the order Zoantharia among the anthozoan subclass Hexacorallia and to clarify the taxonomic situation within the Zoantharia. The sequencing of complete mitochondrial genomes had the objective to test the use of these genomes to reconstruct the phylogeny of the Hexacorallia. We showed that the order of the genes and amino-acid sequences allowed a robust construction of phylogenetic hypotheses concerning the evolution of hexacorallians orders. Within the order, we used different molecular markers to reassess morphological and ecological characters and clarify the taxonomy of this group. Our results showed the importance of substrate specificity among epizoic genera. We proposed a simple method to identify zoanthids using two molecular markers combined to geographical and ecological parameters. Based on those characters we also proposed the creation of new genera and we described two new species
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Häussermann, Verena. "Neue integrative Ansätze für das Sammeln, Bearbeiten und Beschreiben skelettloser Hexacorallia am Beispiel chilenischer Seeanemonen." Diss., lmu, 2004. http://nbn-resolving.de/urn:nbn:de:bvb:19-21624.

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LAPIAN, HAPRY FRED NICO. "Systematic study of some black corals species (Antipatharia, Hexacorallia) based on RDNA internal transcribed spacers sequences." Doctoral thesis, Università Politecnica delle Marche, 2008. http://hdl.handle.net/11566/242600.

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Capasso, Laura. "Molecular insight into ion transport for calcification in symbiotic and non-symbiotic corals." Electronic Thesis or Diss., Sorbonne université, 2021. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2021SORUS258.pdf.

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La construction et le maintien des récifs coralliens dépendent essentiellement de la calcification des coraux, organismes qui produisent un squelette rigide fait de CaCO3, sous la forme cristalline d'aragonite. La plupart de ces coraux vivent en symbiose avec des dinoflagellés photosynthétiques de la famille des Symbiodiniaceae, qui fournissent de l'énergie et des nutriments à l'hôte corallien. Compte tenu de l'importance écologique des coraux constructeurs de récifs, de nombreux progrès ont été réalisés dans l'identification des mécanismes à la base de la calcification des coraux. Néanmoins, il existe encore des lacunes importantes dans la compréhension de ce processus, dont la caractérisation des transporteurs d'ions, utilisés par les cellules calcifiantes pour promouvoir la calcification. Pour contribuer à ce manque de connaissances, des approches ciblées et générales, couplées à des outils moléculaires et bioinformatiques, ont été utilisées tout au long de cette thèse. En utilisant l'approche ciblée, j'ai recherché, dans le génome et le transcriptome du corail symbiotique Stylophora pistillata, des protéines de transport d'ions, précédemment rapportées comme étant impliquées dans la calcification d'autres espèces calcifiantes. En utilisant une approche générale, j'ai étendu la recherche de gènes candidats chez le corail non symbiotique Tubastraea spp. Les deux approches ont contribué à une meilleure compréhension des mécanismes de transport d'ions utilisés par les cellules calcifiantes du corail pour favoriser la calcification dans ce groupe d'animaux marins écologiquement important
The construction and maintenance of coral reefs primarily depends on the calcification of corals, which produce a rigid skeleton made of CaCO3 in the crystalline form of aragonite. Most reef-building corals live in symbiosis with photosynthetic dinoflagellates of the Symbiodiniaceae family, which provide the coral host with energy and nutrients. Given their ecological importance, much progress has been made in identifying key elements of the mechanisms underlying coral calcification. Nevertheless, there are still significant gaps in our understanding. Foremost is the characterization of ion transporters, used by the coral calcifying cells to promote calcification. To contribute to this lack of knowledge, targeted and broad approaches, coupled with molecular and bioinformatics tools, have been used throughout this thesis. Using the targeted approach, ion transporter proteins, previously reported to be involved in calcification of other calcifying species, have been identified for the first time in the genome and transcriptome of the symbiotic coral Stylophora pistillata. Whereas, using a broad approach, novel candidate genes for roles in calcification have been identified in the non-symbiotic coral Tubastraea spp. Overall, both approaches contributed to a better understanding of the ion transporting mechanisms used by the coral calcifying cells to promote calcification in this ecologically important group of marine animals
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Lin, Mei-Fang. "Corallimorpharian transcriptomes and their use to understand phylogeny and symbiosis in the Hexacorallia." Thesis, 2016. https://researchonline.jcu.edu.au/48579/1/48579-lin-2016-thesis.pdf.

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Corallimorpharia, also known as coral-like anemones, belong to the sub-order Hexacorallia, the class Anthozoa, the phylum Cnidaria. Cnidaria is a group of the simplest animals at the tissue level of organization, which reflect ancestral characteristics and hence are important for understanding the evolution of metazoan genomes and developmental mechanisms. Morphologically, corallimorpharians resemble actinarians in the absence of a calcareous skeleton, but have internal anatomy more similar to scleractinians (corals) than to actinarians (sea anemones). Corallimorpharia comprises about 46 nominal species and generally these are minor components of the benthos in a wide range of habitats, which has led to corallimorpharian taxonomy and phylogeny being largely ignored in favor of their more obvious relatives. Corallimorpharians are typical hexacorallians in several respects, e.g. 48.2% of corallimorpharians harbor endosymbiotic dinoflagellate algae (zooxanthellae) belonging to the genus Symbiodinium, there are both shallow water and deep-sea species (Append A), and they have similar overall symmetry of body structure. Phylogenetic relationships between corallimorpharians and scleractinians remain particularly controversial and, on the basis of mitochondrial genome data, two main hypotheses have been proposed for their evolution. The "naked coral" hypothesis states that scleractinians were skeleton-less in the early Triassic, a time when carbonate deposition was suppressed globally, and corallimorpharians arose by skeleton loss from a scleractinian ancestor at a later time (during the mid-Cretaceous) when the oceans had higher CO₂ levels. By contrast, the "scleractinian monophyly" hypothesis has corals as a monophylic lineage, with the Corallimorpharia as a close sister clade. According to Kitahara et al. (2014), the fundamental disagreement between the phylogenies based on nucleotide and amino acid sequences for mt proteins stems from the fact that none of the available models for sequence evolution adequately account for the observed data. Comparison of corallimorpharian and scleractinian mt genome architectures has shown that gene order in one species of corallimorpharian, Corallimorphus profundus (Moseley, 1877), is very similar to the canonical organization in scleractinians, indicating that this organism most closely reflects the coral <-> corallimorpharian transition (Lin et al., 2014). In this study, three corallimorpharian transcriptomes were generated, and phylogenomic analyses of these used to provide insights into evolutionary relationships between scleractinians and corallimorpharians. The results strongly support scleractinian monophyly. Moreover, surveying the corallimorpharian transcriptomes led to the identification of homolologs of some skeletal organic matrix proteins (SOMPs) that were previously considered to be restricted to scleractinians; this is particularly significant given that surprisingly few of the proteins identified in the skeletal proteome are scleractinian-specific. Comparison of the carbonic anhydrase (CA) inventories of corallimorpharians with those of corals indicates that scleractinians have specifically expanded the secreted and membrane-associated type CAs, whereas similar complexity is observed in the two groups with respect to other CA types. Additionally the similar numbers and distribution of the various CA types between the non-symbiotic corallimorpharians Corynactis and Ricordea, which normally host Symbiodinium, suggest that, whereas an expansion of the CA repertoire has been necessary to enable calcification, it may not be a requirement to enable symbiosis. These data also indicated that the evolution of calcification in scleractinians required relatively few completely new genes. Prior to the present work, little was known about corallimorpharian-algal symbioses. This study investigated gene expression profiles of a tropical corallimorpharian during the re-establishment of symbiosis, providing the first large-scale dataset of this kind. The comparison of corallimorpharian transcriptomes under the symbiotic and aposymbiotic states indicated the similar responses of those shown in the scleractinians and anemones. The comprehensive comparison of genomic data from symbiotic, aposymbiotic and nonsymbiotic cnidarians supports the previous idea that host genes involved in symbiosis recognition and innate immune response for Symbiodinium tolerance play important roles in the establishment of symbiosis. Finally, the transcriptomic data indicate that glycogen biosynthesis occurs during the re-establishment of symbiosis in corallimorpharians, and that glycogen synthesis is likely to be more active during re-infection with a homologous rather than heterologous Symbiodinium strains. An additional interesting finding was the identification of a suite of genes unique to symbiotic corallimorpharians that were upregulated during the establishment of symbiosis. Although the functions of these genes remain to be explored, it is tempting to speculate to interpret this as evidence for the independent evolution of symbiosis in corallimorpharians.
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Masse, Lola Melody. "Sexual reproduction of Pocillopora damicornis (Cnidaria : hexacorallia) at high latitude off Durban, South Africa." Thesis, 2009. http://hdl.handle.net/10413/8309.

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Pocillopora damicornis is one of the best-studied and most widespread of corals. Previous studies on its sexual reproduction have yielded a diverse and contradictory view of its reproductive strategy. This coral has long been considered a typical hermaphroditic brooder. However, recent studies have demonstrated that its dispersal may also occur through broadcast spawning of gametes. Since both modes of reproduction have advantages for dispersal, P. damicornis reproductive traits are probably driven by environmental pressures. High-latitude habitats are considered marginal for corals since they fall beyond the “normal” limits of coral development. They provide, therefore, a good opportunity to study reproductive strategies that have evolved under different environmental pressures. The pattern and timing of reproduction were studied in P. damicornis on the high-latitude reefs of Durban, KwaZulu-Natal, South Africa (29°S). Branches were randomly selected from colonies on a monthly basis from October 2007 to April 2008. After fixation and decalcification, the coral tissues were processed for histology and cross-sectioned to reveal the presence and stages of gametes within the polyps. The number and size of gametes were estimated using image analysis. P. damicornis in Durban is hermaphroditic and all polyps contained oocytes and spermaries at the end of the breeding season. Since no brooding of embryos or planulae was found in the 175 polyps analysed during the seven-month study period, this coral is presumed to be a broadcast spawner in South African waters. P. damicornis invested seven to eight months in gametogenesis and oogenesis was initiated one month before spermatogenesis. Gametogenesis was confined to the warmer months of the year, commencing during the increase in seawater temperature at the onset of summer. Gamete development was poorly synchronised between colonies during the initial months of breeding, but mature oocyte stages were dominant in all polyps at the end of the breeding season. Spawning was inferred from the disappearance of gametes in April 2008, and may have occurred during full moon in March 2008. This happened before the drop in temperature at the end of summer. P. damicornis in KwaZulu-Natal exhibited a pattern and timing in its reproduction similar to that found in south Western Australia at 32°S. Keywords: coral; Scleractinia; Pocillopora damicornis; high latitude; sexual reproduction; South Africa.
Thesis (M.Sc.)-University of KwaZulu-Natal, 2009.
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Häussermann, Verena [Verfasser]. "Neue integrative Ansätze für das Sammeln, Bearbeiten und Beschreiben skelettloser Hexacorallia am Beispiel chilenischer Seeanemonen / Verena Häussermann." 2004. http://d-nb.info/971454736/34.

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Books on the topic "Hexacorallia"

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London, Linnean Society of, and Estuarine and Brackish-water Sciences Association., eds. British Anthozoa (Coelenterata:Octocorallia & Hexacorallia): Keys and notes for the identification of the species. London: Published for the Linnean Society of London and the Estuarine and Brackish-water Sciences Association by E.J. Brill/Dr. W. Backhuys, 1988.

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Book chapters on the topic "Hexacorallia"

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Queiroz, Kevin de, Philip D. Cantino, and Jacques A. Gauthier. "Hexacorallia E. Haeckel 1866 [M. Daly], converted clade name." In Phylonyms, 465–68. Boca Raton : CRC Press, [2019]: CRC Press, 2020. http://dx.doi.org/10.1201/9780429446276-121.

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Reimer, James Davis, and Takuma Fujii. "Zoantharia (Cnidaria: Anthozoa: Hexacorallia) Diversity Research in Japan: Current State and Future Trends." In Species Diversity of Animals in Japan, 383–99. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56432-4_14.

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Manuel, R. L. "Index of Families, Genera and Species." In British Anthozoa (Coelenterata: Octocorallia and Hexacorallia), 237–41. BRILL, 1988. http://dx.doi.org/10.1163/9789004627543_003.

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Manuel, R. L. "A Synopsis of the British Anthozoa." In British Anthozoa (Coelenterata: Octocorallia and Hexacorallia), 1–236. BRILL, 1988. http://dx.doi.org/10.1163/9789004627543_002.

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Manuel, R. L. "Preliminary Material." In British Anthozoa (Coelenterata: Octocorallia and Hexacorallia), i—vii. BRILL, 1988. http://dx.doi.org/10.1163/9789004627543_001.

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Santos, Maria E. A., and James D. Reimer. "Biology and Ecology of Zoantharians (Cnidaria: Hexacorallia: Zoantharia)." In Encyclopedia of the World's Biomes, 619–28. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-409548-9.12430-3.

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Wagner, Daniel, Daniel G. Luck, and Robert J. Toonen. "The Biology and Ecology of Black Corals (Cnidaria: Anthozoa: Hexacorallia: Antipatharia)." In Advances in Marine Biology, 67–132. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-12-394282-1.00002-8.

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