Abundance of thraustochytrids on fallen decaying leaves of Kandelia candel and mangrove sediments in Futian National Nature Reserve, China
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Michelle K.M. Wong
Abstract
Thraustochytrids are important mangrove decomposers on decaying cellulose-rich materials such as macroalgae and mangrove leaves, yet their distribution patterns on decaying mangrove leaves and in surface sediments have never been analyzed systematically. The current study investigates the possible correlation between thraustochytrid abundance on fallen decaying leaves and sediments in mangroves, and seasonal factors, i.e., air temperature and seawater salinity. Fallen decaying leaves of Kandelia candel and surface sediments were collected in April, July, October 2004, and February 2005. Homogenates of both leaves and sediments were plated onto yeast extract peptone agar for the enumeration of thraustochytrid colonies. Both the abundance and frequency of occurrence of thraustochytrids on decaying leaves were consistently higher than that of the sediments. However, thraustochytrid abundance on decaying leaves and in sediments were not correlated, and their abundance was not influenced by changes of air temperature or seawater salinity. The very high abundance of thraustochytrids found in mangrove plant detritus (4.8×103–5.6×105 CFU g-1) and sediment (1.0×102–1.6×103 CFU g-1) support the notion that they are an important mangrove decomposer and possibly a vital food source for filter-/detritus-feeders in mangrove food webs.
References
Bowles, R.D., A.E. Hunt, G.B. Bremer, M.G. Duchars and R.A. Eaton. 1999. Long-chain n-3 polyunsaturated fatty acid production by members of the marine protistan group the thraustochytrids: screening of isolates and optimisation of docosahexaenoic acid production. J. Biotechnol. 70: 193–202.10.1016/S0079-6352(99)80112-XSearch in Google Scholar
Bremer, G.B. 1995. Lower marine fungi (Labyrinthulomycetes) and the decay of mangrove leaf litter. Hydrobiologia295: 89–95.10.1007/978-94-011-0289-6_12Search in Google Scholar
Bremer, G.B. and G. Talbot. 1995. Cellulolytic enzyme activity in the marine protist Schizochytrium aggregatum. Bot. Mar.38: 37–41.10.1515/botm.1995.38.1-6.37Search in Google Scholar
Fan, K.W., F. Chen, E.B.G. Jones and L.L.P. Vrijmoed. 2001. Eicosapentaenoic and docosahexaenoic acids production by and okara-utilizing potential of thraustochytrids. J. Ind. Microbiol. Biotechnol. 27: 199–202.10.1038/sj.jim.7000169Search in Google Scholar
Fan, K.W., L.L.P. Vrijmoed and E.B.G. Jones. 2002a. Physiological studies of subtropical mangrove thraustochytrids. Bot. Mar.45: 50–57.10.1515/BOT.2002.006Search in Google Scholar
Fan, K.W., L.L.P. Vrijmoed and E.B.G. Jones. 2002b. Zoospore chemotaxis of mangrove thraustochytrids from Hong Kong. Mycologia94: 569–578.10.1080/15572536.2003.11833185Search in Google Scholar
Kimura, H., F. Tatsuhiro and T. Naganuma. 1999. Biomass of thraustochytrid protoctists in coastal water. Mar. Ecol. Prog. Ser.189: 27–33.10.3354/meps189027Search in Google Scholar
Lee, S.Y. 1989. Litter production and turnover of mangrove Kandelia candel (L.) Druce in a Hong Kong tidal shrimp pond. Estuar. Coast. ShelfSci.29: 75–87.10.1016/0272-7714(89)90074-7Search in Google Scholar
Lee, S.Y. and P.W. Kwok. 2002. The importance of mangrove species association to the population biology of the sesarmine crabs Parasesarma affinis and Perisesarma bidens. Wetlands Ecol. Manag.10: 215–226.Search in Google Scholar
Naganuma, T., H. Takasugi and H. Kimura. 1998. Abundance of thraustochytrids in coastal plankton. Mar. Ecol. Prog. Ser.165: 105–110.10.3354/meps162105Search in Google Scholar
Raghukumar, S. 1988. Schizochytrium mangrovei sp. nov., a thraustochytrid from mangroves in India. Trans. Brit. Mycol. Soc.90: 627–631.Search in Google Scholar
Raghukumar, S. 2002. Ecology of the marine protists, the Labyrinthulomycetes (Thraustochytrids and Labyrinthulids). Eur. J. Protistol.38: 127–145.Search in Google Scholar
Raghukumar, S. and R. Balasubramanian. 1991. Occurrence of thraustochytrid fungi in corals and coral mucus. Indian J. Mar. Sci.20: 176–181.Search in Google Scholar
Raghukumar, S. and A. Gaertner. 1980. Ecology of the thraustochytrids (lower marine fungi) in the Fladen Ground and other parts of the North Sea II. Veröff. Inst. Meeresforsch. Bremerhaven18: 289–308.Search in Google Scholar
Raghukumar, S., S. Sharma, C. Raghukumar, V. Sathe-Pathak and D. Chandramohan. 1994. Thraustochytrid and fungal component of marine detritus. IV. Laboratory studies on decomposition of leaves of the mangrove Rhizophora apiculata Blume. J. Exp. Mar. Biol. Ecol.183: 113–131.10.1016/0022-0981(94)90160-0Search in Google Scholar
Raghukumar, S., V. Sathe-Pathak, S. Sharma and C. Raghukumar. 1995. Thraustochytrid and fungal component of marine detritus. III. Field studies on decomposition of leaves of the mangrove Rhizophora apiculata Blume. Aquat. Microb. Ecol.9: 117–125.10.3354/ame009117Search in Google Scholar
Raghukumar, S., N. Ramaiah and C. Raghukumar. 2001. Dynamics of thraustochytrid protists in the water column of the Arabian Sea. Aquat. Microb. Ecol.24: 175–186.10.3354/ame024175Search in Google Scholar
Santangelo, G., L. Giorni and L. Pignataro. 2000. Abundance of thraustochytrids and ciliated protozoans in a Mediterranean sandy shore determined by an improved, direct method. Aquat. Microb. Ecol.23: 55–61.10.3354/ame023055Search in Google Scholar
Sathe-Pathak, V., S. Raghukumar, C. Raghukumar and S. Sharma. 1993. Thraustochytrids and fungal component of marine detritus. I. Field studies on decomposition of brown alga Sargassum cinereumJ. Ag. Indian J. Mar. Sci.22: 159–167.Search in Google Scholar
Sharma, S., C. Raghukumar, S. Raghukumar, V. Sathe-Pathak and D. Chandramohan. 1994. Thraustochytrid and fungal component of marine detritus II. Laboratory studies on decomposition of the brown alga Sargassum cinereum J. Ag. J. Exp. Mar. Biol. Ecol.175: 227–242.10.1016/0022-0981(94)90028-0Search in Google Scholar
Ulken, A. 1986. Estimation of thraustochytrids propagules in two mangrove swamps. Bot. Mar.29: 85–89.10.1515/botm.1986.29.2.85Search in Google Scholar
Yokochi, T., D. Honda, T. Higashihara and T. Nakahara. 1998. Optimization of docosahexaenoic acid production by Schizochytrium limacinum SR21. Appl. Microbiol. Biotechnol.49: 72–76.10.1007/s002530051139Search in Google Scholar
Zar, J.H. 1999. Biostatistical analysis. 3rd edition. Prentice Hall International, Inc. New Jersey, USA. pp. 217.Search in Google Scholar
Zhukova, N.V. and V.I. Kharlamenko. 1999. Sources of essential fatty acids in the marine microbial loop. Aquat. Microb. Ecol.17: 153–157.10.3354/ame017153Search in Google Scholar
©2005 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Author index volume 48 (2005)
- Contents volume 48 (2005)
- Genus/Species index volume 48 (2005)
- Special Issues of Botanica Marina
- 5th Asia Mycological Congress and 9th International Marine and Freshwater Mycology Symposium, Chiang Mai, Thailand, 14–19 November 2004
- Molecular approaches for assessing fungal diversity in marine substrata
- Diversity of marine fungi from Egyptian Red Sea mangroves
- Marine fungi from the Bahamas Islands
- Marine fungi on Nypa fruticans in Thailand
- Abundance of thraustochytrids on fallen decaying leaves of Kandelia candel and mangrove sediments in Futian National Nature Reserve, China
- Screening of marine fungi for lignocellulose-degrading enzyme activities
- Properties of the docosahexaenoic acid-producer Schizochytrium mangrovei Sk-02: effects of glucose, temperature and salinity and their interaction
- A systematic reassessment of the marine ascomycetes Torpedospora and Swampomyces
- Long-term acclimation to UV radiation: effects on growth, photosynthesis and carbonic anhydrase activity in marine diatoms
- Histioneis (Dinophysiales, Dinophyceae) from the western Pacific Ocean
- Molecular investigation reveals epi/endophytic extrageneric kelp (Laminariales, Phaeophyceae) gametophytes colonizing Lessoniopsis littoralis thalli
- Total dietary fiber content in Hawaiian marine algae
- The antibacterial compound sulphoglycerolipid 1-0 palmitoyl-3-0(6′-sulpho-α-quinovopyranosyl)-glycerol from Sargassum wightii Greville (Phaeophyceae)
- Evidence for vertical growth in Zostera noltii Hornem.
- Acknowledgement volume 48 (2005)
Articles in the same Issue
- Author index volume 48 (2005)
- Contents volume 48 (2005)
- Genus/Species index volume 48 (2005)
- Special Issues of Botanica Marina
- 5th Asia Mycological Congress and 9th International Marine and Freshwater Mycology Symposium, Chiang Mai, Thailand, 14–19 November 2004
- Molecular approaches for assessing fungal diversity in marine substrata
- Diversity of marine fungi from Egyptian Red Sea mangroves
- Marine fungi from the Bahamas Islands
- Marine fungi on Nypa fruticans in Thailand
- Abundance of thraustochytrids on fallen decaying leaves of Kandelia candel and mangrove sediments in Futian National Nature Reserve, China
- Screening of marine fungi for lignocellulose-degrading enzyme activities
- Properties of the docosahexaenoic acid-producer Schizochytrium mangrovei Sk-02: effects of glucose, temperature and salinity and their interaction
- A systematic reassessment of the marine ascomycetes Torpedospora and Swampomyces
- Long-term acclimation to UV radiation: effects on growth, photosynthesis and carbonic anhydrase activity in marine diatoms
- Histioneis (Dinophysiales, Dinophyceae) from the western Pacific Ocean
- Molecular investigation reveals epi/endophytic extrageneric kelp (Laminariales, Phaeophyceae) gametophytes colonizing Lessoniopsis littoralis thalli
- Total dietary fiber content in Hawaiian marine algae
- The antibacterial compound sulphoglycerolipid 1-0 palmitoyl-3-0(6′-sulpho-α-quinovopyranosyl)-glycerol from Sargassum wightii Greville (Phaeophyceae)
- Evidence for vertical growth in Zostera noltii Hornem.
- Acknowledgement volume 48 (2005)
