Influence of temperature on growth, toxicity and carbohydrate production of a Japanese Ostreopsis ovata strain, a toxic-bloom-forming dinoflagellate
(2011) In Aquatic Microbial Ecology 65(3). p.261-270- Abstract
- Ostreopsis ovata is a benthic dinoflagellate that produces palytoxin and its analogues. Since the end of the 1990s, toxic blooms of O. ovata have been recorded in many tropical and temperate marine waters. These blooms often kill benthic invertebrates and cause health problems for humans. We hypothesize that increases in seawater temperature might induce these blooms. A strain of O. ovata isolated from the southern coast of Japan was selected for study. O. ovata cells were exposed to 7 different temperatures from 24 to 30 degrees C for 30 d, and growth rates were noted. The specific growth rate was found to be highest at 25 degrees C, next highest at 24 degrees C and lower at 26, 28, 27, 30 and 29 degrees C, in that order. The hypothesis... (More)
- Ostreopsis ovata is a benthic dinoflagellate that produces palytoxin and its analogues. Since the end of the 1990s, toxic blooms of O. ovata have been recorded in many tropical and temperate marine waters. These blooms often kill benthic invertebrates and cause health problems for humans. We hypothesize that increases in seawater temperature might induce these blooms. A strain of O. ovata isolated from the southern coast of Japan was selected for study. O. ovata cells were exposed to 7 different temperatures from 24 to 30 degrees C for 30 d, and growth rates were noted. The specific growth rate was found to be highest at 25 degrees C, next highest at 24 degrees C and lower at 26, 28, 27, 30 and 29 degrees C, in that order. The hypothesis that increased seawater temperature causes increases in growth rate was thus not supported. The cell toxicity and car bohydrate production of O. ovata were highest at the temperature range that is optimal for cell growth. Increasesing sea surface temperature, as a result of global warming, is therefore not likely to have a substantial effect on the bloom formation and toxicity of this Japanese strain of O. ovata. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7994209
- author
- Vidyarathna, N. K. and Graneli, Edna LU
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- categories
- Higher Education
- in
- Aquatic Microbial Ecology
- volume
- 65
- issue
- 3
- pages
- 261 - 270
- publisher
- Inter-Research
- ISSN
- 0948-3055
- DOI
- 10.3354/ame01555
- language
- English
- LU publication?
- no
- id
- 595b239c-9098-4f60-9439-415cebafef90 (old id 7994209)
- date added to LUP
- 2016-04-01 14:10:57
- date last changed
- 2018-11-21 20:24:15
@article{595b239c-9098-4f60-9439-415cebafef90, abstract = {{Ostreopsis ovata is a benthic dinoflagellate that produces palytoxin and its analogues. Since the end of the 1990s, toxic blooms of O. ovata have been recorded in many tropical and temperate marine waters. These blooms often kill benthic invertebrates and cause health problems for humans. We hypothesize that increases in seawater temperature might induce these blooms. A strain of O. ovata isolated from the southern coast of Japan was selected for study. O. ovata cells were exposed to 7 different temperatures from 24 to 30 degrees C for 30 d, and growth rates were noted. The specific growth rate was found to be highest at 25 degrees C, next highest at 24 degrees C and lower at 26, 28, 27, 30 and 29 degrees C, in that order. The hypothesis that increased seawater temperature causes increases in growth rate was thus not supported. The cell toxicity and car bohydrate production of O. ovata were highest at the temperature range that is optimal for cell growth. Increasesing sea surface temperature, as a result of global warming, is therefore not likely to have a substantial effect on the bloom formation and toxicity of this Japanese strain of O. ovata.}}, author = {{Vidyarathna, N. K. and Graneli, Edna}}, issn = {{0948-3055}}, language = {{eng}}, number = {{3}}, pages = {{261--270}}, publisher = {{Inter-Research}}, series = {{Aquatic Microbial Ecology}}, title = {{Influence of temperature on growth, toxicity and carbohydrate production of a Japanese Ostreopsis ovata strain, a toxic-bloom-forming dinoflagellate}}, url = {{http://dx.doi.org/10.3354/ame01555}}, doi = {{10.3354/ame01555}}, volume = {{65}}, year = {{2011}}, }