karenia brevis morphology

2019) Both Karenia spp. Landsberg. Taxonomy, the science of identification and classification, is a dynamic discipline in which conclusions change as advances in technology result in new information. nov. (Dinophyceae): A new toxic dinoflagellate from the Gulf of Mexico coastal waters exhibiting two distinct morphologies. A recent HAB dominated by the toxin-producing dinoflagellate Karenia brevis in the northeastern Gulf of Mexico, offshore of Florida’s Big Bend region, allowed for comparison of the capacities of VIIRS and Moderate Resolution Imaging Spectroradiometer (MODIS) to detect blooms in CDOM-rich waters. The genus Gonyaulax in Florida waters. 2011 Expand/Collapse 2011. 4) Steidinger K.A., J.T. nov. (Dinophyceae): A new toxic dinoflagellate from the Gulf of Mexico coastal waters exhibiting two distinct morphologies. Three new dinoflagellate species, Karenia papilionacea sp. Karenia are well known for their toxic blooms that kill fish, marine organisms, and other animals. Morphology and behaviour of dinoflagellate chromosomes during the cell cycle and mitosis. The Journal of Phycology was founded in 1965 by the Phycological Society of America. Distinguishing morphological characters for the genus Karenia included a smooth theca and a linear apical groove. These blooms, also called red tides, cause extensive ecological and economic damage. Neurotoxic shellfish poisoning (NSP) is caused by consumption of molluscan shellfish contaminated with brevetoxins primarily produced by the dinoflagellate, Karenia brevis. In 1979 it was categorized under the genus Ptychodiscus and named Ptychodiscus brevis as new research showed it fit better under this genus because of its morphology, biochemistry, and … Journal of Phycology 49: 143-155. - Relationship between Karenia and Karlodinium/Takayama is not highly supported in phylogenetic tree SSU rDNA. Lab. Karenia brevis Published by Elsevier Ltd. Brevetoxin Toxin isolation HAB Osmotic stress 1. Ventral (1, 2, 4, 5, 7, and 8) and dorsal (3, 6, and 9) views of each strain are shown: KpURN1Y (A1–3), KpURN7Y (A4–6), KpURN9Y (A7–9), KspNOM1H (B1–3), KspNOM4H (B4–6), KspNOM6H (B7–9), and KmURN6Y (C1–3). 1995). Consequently lit-tle is known on the morphology and the life cycle of species such as K. papilionacea under natural conditions. The new species can be … nov., Karenia selliformis sp. Karenia brevis （as Gymnodinium breve） Karlodinium micrum (as Gymnodinium galatheanum) Karenia brevis （as Gymnodinium breve） 72 100 93 95 - Apical groove is strait or sigmoid, containing chloroplast derived from a haptophyte. B., Henry, M., & Paul, V. J. However, species diversity of the genus is generally overlooked owing to the difficulty of identifying small unarmored dinoflagellates. Journal of Phycology 49:143-155. Journal of Phycology, 40(1), 165-179. Botanica Marina 55(1):31-37. Keywords: Karenia brevis; morphology; plasticity; sphere-shape cell; salinity; cryptic species; regulatory monitoring; shellfish harvest area Karenia brevis is a marine dinoflagellate which naturally produces a suite of neurotoxins known as brevetoxins. Toxicity. The eukaryotic cell cycle is driven by a set of cyclin-dependent kinases associated with their regulatory partners, the cyclins, which confer activity, substrate specificities and proper localization of the kinase activity. Population-genetic structure of the toxic dinoflagellateKarenia brevis from the Gulf of Mexico. The dinoflagellate genus Karenia is known for recurrent harmful blooms worldwide. nov., and Karenia bidigitata sp. ⓘ Karenia papilionacea. Morphology and phylogeny ofProrocentrum texanum sp. Karenia brevis, the Florida red tide dinoflagellate, has been studied extensively, but very little attention has been paid to its sexual life cycle.We found that the life cycle of K. brevis is heterothallic, most probably not resting cyst-producing, but with life stages of different morphology. Mar. A spatially explicit individual-based model to identify origins of blooms of the toxic dinoflagellate Karenia brevis ... Morphology and phylogeny of Prorocentrum texanum sp. Journal of Phycology. I. Morphology and thecal development in Gonyaulax polygramma Stein, 1883. An abnormal, rounded, cell morphology was produced in K. brevis cultures acclimated to 28° C and persisted in cultures acclimated through 28° C to 31° C. As well, specific growth rates of cultures growing at 25° C and acclimated to 30° C differed depending on whether the average growth rates were derived from culture cell density or RFU measurements. Department of Molecular Sciences; Research output: Contribution to journal › Article. Harmful algae. 49:143-55 doi 10.1111/jpy.12030. 1, No.4. J.Cell Sci. Osmotic stress triggers toxin production by the dinoflagellate Karenia brevis. Morphology and phylogeny of Prorocentrum texanum sp. In fact, until K. papilionacea was formally identiﬁed as a separate species in 2004 (Haywood Although most HAB events are comprised of a single dominant et al. Flaherty, K.E., and J.H. Search: Add your article Home Years 2004 2004 in the environment Species described in 2004 Karenia papilionacea. Lefl. COMPARATIVE MORPHOLOGY AND MOLECULAR PHYLOGENETIC ANALYSIS OF THREE NEW SPECIES OF THE GENUS KARENIA (DINOPHYCEAE) FROM NEW ZEALAND 1. species of Karenia were described based on abundant materials cultured under optimal conditions for growth that does not reproduce the low turbulence and olig-otrophic conditions of the open ocean. 2013. Karenia brevis (Davis) G. Hansen & Moestrup is the new name for Florida's red tide organism.The genus Karenia was created to honor Dr. Karen Steidinger of the Fish and Wildlife Research Institute. Morphology of Karenia papilionacea (A), K. papilionacea phylotype-I (B), and Karenia mikimotoi (C) strains isolated from Uranouchi Inlet and Nomi Inlet. Allison J. Haywood, Karen A. Steidinger, Earnest W. Truby, Patricia R. Bergquist, Peter L. Bergquist, Janet Adamson, Lincoln MacKenzie . Comparative morphology and molecular phylogenetic analysis of three new species of the genus karenia (Dinophyceae) from New Zealand. nov., and Karenia bidigitata sp. 5 pp. 1). Ross, C., Ritson-Williams, R., Pierce, R., Bullington, J. Eng. Sci. Holland). Spherical cells were detected in low salinity waters during a bloom of Karenia brevis in Alabama coastal waters. 1, Pt. The genome of Karenia brevis is estimated to be about 1 x 10^11 bp, although the genome has not been sequenced in any members of this genus. Henrichs, D.W., M.A. 102) Steidinger K.A. Three new dinoflagellate species, Karenia papilionacea sp. nov., and Karenia bidigitata sp. Karenia brevis Most common in Gulf of Mexico and often confused for K. mikimotoi photo credit: J. Mar. 129 Citations (Scopus) Abstract. (J. Mar. nov. (Dinophyceae): a new dinoflagellate from Gulf of Mexico coastal waters exhibiting two distinct morphologies. Conserv. A .. Add an external link to your content for free. nov., were compared with the toxic species Karenia mikimotoi (Miyake & Kominami ex Oda) G. Hansen & Moestrup, Karenia brevis (Davis) G. Hansen & Moestrup, and Karenia brevisulcata (Chang) G. Hansen & Moestrup using the same fixative. : +64 3 548 2319; fax: +64 3 546 9464. produced ‘brevetoxin-like’ lipid soluble toxins (MacKenzie et al., E-mail address: patrick.holland@cawthron.org.nz (P.T. COMPARATIVE MORPHOLOGY AND MOLECULAR PHYLOGENETIC ANALYSIS OF THREE NEW SPECIES OF THE GENUS KARENIA ... Karenia brevis (Davis) G. Hansen & Moestrup, and Karenia brevisulcata (Chang) G. Hansen & Moestrup using the same fixative. INTRODUCTION. Brevetoxin-Producing Spherical Cells Present in Karenia brevis Bloom: Evidence of Morphological Plasticity? The Florida red tide dinoflagellate Karenia brevis… (2009) Historical perspective on Karenia brevis red tide research in the Gulf of Mexico. nov., Karenia selliformis sp. دانلود مقالات isi انگلیسی درباره برویس Karenia با ترجمه فارسی - مقالات الزویر ساینس دایرکت Science Direct Fla. Bd. 2004), it was often mistakenly identiﬁed as K. brevis. Morphology and phylogeny of Prorocentrum texanum sp. . Eng. Errera, RM, Campbell, L. 2011. Effects of the Florida red tide … This alga was similar to other Karenia species (K. mikimotoi and K. brevis) in morphology, and * Corresponding author. nov., were compared with the toxic species Karenia mikimotoi (Miyake & Kominami ex Oda) G. Hansen & Moestrup, Karenia brevis (Davis) G. Hansen & Moestrup, and Karenia brevisulcata (Chang) G. Hansen & Moestrup using the same fixative. The morphology of the unarmored dinoflagellate K. brevis has been described in detail elsewhere (e.g., Gymnodinium breve in [], K. brevis in []).A typical description of K. brevis addresses the cell shape as dorso-ventrally flattened, ventrally concave, with a straight apical groove. Comparison of swimming speed and photophysiological responses to different external conditions among three Karenia brevis strains Author MCKAY, Laurie 1; KAMYKOWSKI, Daniel 1; MILLIGAN, Ed 1; SCHAEFFER, Blake 1; SINCLAIR, Geoff 1 [1] Department of Marine, Earth, and Atmospheric Sciences, Jordan Hall, NC State University, Raleigh, NC, United States Source. Sci. (2010). Ser- Vol. 2011. Blooms of K. brevis, called Florida red tide, occur frequently along the Gulf of Mexico. The isogamous gametes were slightly smaller than vegetative cells and not as broad and flat. PDF | Spherical cells were detected in low salinity waters during a bloom of Karenia brevis in Alabama coastal waters. Tel. DW Henrichs, MA Renshaw, JR Gold, L Campbell. 2006, Vol 5, Num 6, … 2004) (Fig. Cells are wider than they are long (20–40 µm), with a round nucleus and consist of peripheral chloroplasts. Introduction K. brevis (Haywood et al. nov. (Dinophyceae): ... Karenia brevis red tides and brevetoxin-contaminated fish: a high risk factor for Florida’s scavenging shorebirds? nov., Karenia selliformis sp. Karenia brevis was first named Gymnodinium brevis in 1948, but later changed to Gymnodinium breve, which correlates with the guidelines of the International Code of Botanical Nomenclature. Three new dinoflagellate species, Karenia papilionacea sp. Output: Contribution to journal › Article a high risk factor for Florida s! Blooms that kill fish, marine organisms, and * Corresponding author › Article species of the genus is overlooked! 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