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High tolerance of Chaetomorpha sp. to salinity and water temperature enables survival and growth in stagnant waters of central Thailand
Author(s)
Tsutsui, Isao
Miyoshi, Tatsuo
Songphatkaew, Jaruwan
Meeanan, Chonlada
Klomkling, Sirimas
Sukchai, Halethichanok
Pinphoo, Piyarat
Yamaguchi, Iori
Maeno, Yukio
Hamano, Kaoru
Date Issued
March 1, 2015
Type
Article
Abstract
The effects of salinity and water temperature on growth and survival of Chaetomorpha sp., one of the green tidal filamentous algae, were investigated. Field surveys revealed that this alga was abundant throughout the year in stagnant coastal waters of central Thailand. Chaetomorpha sp. was found in salinities of 3.4–90.0 and water temperatures of 20.1–40.9 °C. Chaetomorpha sp. biomass fluctuated between 9.2 and 162 kg dry weight in a saline swamp, without significant differences among seasons. The highest mean specific growth rate of approximately, 60 % day−1 was observed in laboratory experimental trials at salinities of 20–30 at 30 °C. Salinity and water temperature significantly affected growth of this alga independently and interactively. Based on these results, Chaetomorpha sp. can easily grow, survive and monopolize in stagnant waters where the salinity and temperature greatly fluctuate because of their euryhaline and eurythermal nature as well as their high growth rate.
Citation
International Aquatic Research, 7(1), 47-62, 2015