Results 11 to 20 of about 20,226 (142)

Explosive exhalations by common bottlenose dolphins during Karenia brevis red tides [PDF]

Heliyon, 2020
Harmful algal blooms (HABs) such as those produced by Karenia brevis have acute negative impacts on common bottlenose dolphins (Tursiops truncatus) in Florida coastal waters, frequently causing illness and death. However, much less is known about chronic,
Spencer E. Fire, Glenn A. Miller, Randall S. Wells   +2 more
doaj   +2 more sources

HABscope: A tool for use by citizen scientists to facilitate early warning of respiratory irritation caused by toxic blooms of Karenia brevis. [PDF]

PLoS ONE, 2019
Blooms of the toxic microalga Karenia brevis occur seasonally in Florida, Texas and other portions of the Gulf of Mexico. Brevetoxins produced during Karenia blooms can cause neurotoxic shellfish poisoning in humans, massive fish kills, and the death of ...
D Ransom Hardison, William C Holland, Robert D Currier, Barbara Kirkpatrick, Richard Stumpf, Tracy Fanara, Devin Burris, Andrew Reich, Gary J Kirkpatrick, R Wayne Litaker   +9 more
doaj   +2 more sources

Comparative Quantitative Proteomic Analysis of High and Low Toxin-Producing Karenia brevis Strains Reveals Differences in Polyketide Synthase Abundance and Redox Status of the Proteome [PDF]

Marine Drugs
To identify differentially abundant polyketide synthases (PKSs) and to characterize the biochemical consequences of brevetoxin biosynthesis, bottom-up, TMT-based quantitative proteomics and redox proteomics were conducted to compare two strains of the ...
Kathleen S. Rein, Ricardo Colon, Carlos R. Romagosa, Nicholas R. Ohnikian, Kirstie T. Francis, Samuel R. Rein   +5 more
doaj   +2 more sources

Exposure to the Florida red tide dinoflagellate, Karenia brevis, and its associated brevetoxins induces ecophysiological and proteomic alterations in Porites astreoides. [PDF]

PLoS ONE, 2020
As reef-building corals are increasingly being exposed to persistent threats that operate on both regional and global scales, there is a pressing need to better understand the complex processes that diminish coral populations. This study investigated the
David A Reynolds, Mi-Jeong Yoo, Danielle L Dixson, Cliff Ross   +3 more
doaj   +2 more sources

Brevetoxin Dynamics and Bioavailability from Floc Following PAC-Modified Clay Treatment of Karenia brevis Blooms [PDF]

Toxins
Harmful algal blooms (HABs) caused by the dinoflagellate Karenia brevis present serious ecological and public health concerns due to the production of brevetoxins (BTX).
Nicholas R. Ohnikian, Christopher D. Sibley, R. Ben Freiberger, Kristen N. Buck, Alyssa Myers, Samantha Harlow, Donald M. Anderson, Richard Pierce, Jennifer H. Toyoda   +8 more
doaj   +2 more sources

Brevetoxin-Producing Spherical Cells Present in Karenia brevis Bloom: Evidence of Morphological Plasticity?

Journal of Marine Science and Engineering, 2019
Spherical cells were detected in low salinity waters during a bloom of Karenia brevis in Alabama coastal waters. These balls resembled K. brevis in size and organelle appearance, contained similar concentration of brevetoxin, and occurred during ongoing ...
Alison Robertson, Lucie Novoveská
exaly   +3 more sources

Increased toxicity of Karenia brevis during phosphate limited growth: ecological and evolutionary implications. [PDF]

PLoS ONE, 2013
Karenia brevis is the dominant toxic red tide algal species in the Gulf of Mexico. It produces potent neurotoxins (brevetoxins [PbTxs]), which negatively impact human and animal health, local economies, and ecosystem function.
Donnie Ransom Hardison, William G Sunda, Damian Shea, Richard Wayne Litaker   +3 more
doaj   +2 more sources

Distinct, Depth-Stratified Communities of Heterotrophic, Mixotrophic, and Parasitic Dinoflagellates and Ciliates in the Subarctic Northeast Pacific Euphotic Zone. [PDF]

J Eukaryot Microbiol
ABSTRACT Dinoflagellates and ciliates are important grazers of primary production in the Northeast Pacific but knowledge of their taxonomic composition and depth‐distribution is limited. These organisms also display a variety of heterotrophic feeding modes including heterotrophy, mixotrophy, and parasitism.
Jones EL, Rubin E, Rettig M, McNair H, Menden-Deuer S, Rynearson TA.   +5 more
europepmc   +2 more sources

Global analysis of mRNA half-lives and de novo transcription in a dinoflagellate, Karenia brevis. [PDF]

PLoS ONE, 2013
Dinoflagellates possess many physiological processes that appear to be under post-transcriptional control. However, the extent to which their genes are regulated post-transcriptionally remains unresolved.
Jeanine S Morey, Frances M Van Dolah
doaj   +2 more sources

Examination of the toxicity of a new group of Karenia papilionacea isolated from the Yellow Sea, China, to multiple species of marine aquatic animals [PDF]

Frontiers in Microbiology
IntroductionThe dinoflagellate genus Karenia G. Hansen and Moestrup is notorious for forming harmful algal blooms (HABs), most of which can produce a variety of potent toxins (e.g., brevetoxins), killing fish and other aquatic animals above a certain ...
Qiantong Chen, Menghan Gao, Ning Zhang, Lang Li, Yingyi Fan, Jiali Zhao, Xintong Xu, Zhe Tao, Yunyan Deng, Yulei Zhang, Feng Li, Siheng Lin, Ying Zhong Tang, Zhangxi Hu   +13 more
doaj   +2 more sources