Spatial distribution of meiobenthic community in Tha Len seagrass bed, Krabi Province, Thailand

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概要

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• In the mixed species of seagrass bed, the meiobenthic community was studied in the Tha Len Bay, Krabi Province, Thailand. The bed in the shallow water mainly consisted of three species of seagrasses, namely Halophila ovalis, Thalassia hemprichii and Halodule uninervis. From four monospecific patches of each seagrass species and adjacent barren area, sediment samples were sampled randomly for collecting meiofauna and measuring environmental factors. Free-living nematodes were the most dominant group in terms of abundance and that accounted for 75-85% of the total meiobenthos. From nematodes samples, 329 putative species, belonging to 125 genera and 25 families, were found. The average density was highest (714ind./10cm^2) in H. ovalis and lowest (332ind./10cm^2) in the barren area. Regarding the result of multidimensional scaling analysis, there were differences in nematode communities among area covered by different seagrass species. The nematode communities in the smallest seagrass species (H. ovalis) and barren area were similar that Metalinhomoeus sp. 1 and Gomphionema sp. were dominant. On the other hand, Paralongicyatholaimus sp. 2, Perspiria sp. 1, and Desmodora sp. 3 were dominant species in H. uninervis area, and Paralongicyatholaimus sp. 2 and Praeacanthonchus sp. 1 in T. hemprichii area. The study implies that the difference in complexity of seagrass root and leaf morphology among seagrasses species causes the differences in nematode communities.

• 東京大学の論文
• 2006-04-28

著者

• Aryuthaka Chittima

  Department Of Marine Science Faculty Of Fisheries Kasetsart University

• MONTHUM Yaowaluk

  Department of Marine Science, Faculty of Fisheries, Kasetsart University

• Monthum Yaowaluk

  Department Of Marine Science Faculty Of Fisheries Kasetsart University

関連論文

• AN UNKNOWN MOUTHLESS NEMATODE FOUND FROM A MANGROVE FOREST IN THAILAND(Taxonomy and Systematics,Abstracts of papers presented at the 74^ Annual Meeting of the Zoological Society of Japan)
• Spatial distribution of meiobenthic community in Tha Len seagrass bed, Krabi Province, Thailand

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