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http://dx.doi.org/10.11626/KJEB.2014.32.4.353

Geographical Variations of Sargassum thunbergii Morphology in Korea  

Kim, Sangil (Department of Marine Life Sciences, Jeju National University)
Oh, Yoon Sik (Department of Biology, Gyeongsang National University)
Won, Nam-Il (K-Water Research Institute, Korea Water Resources Corporation)
Park, Sang Rul (Department of Marine Life Sciences, Jeju National University)
Publication Information
Korean Journal of Environmental Biology / v.32, no.4, 2014 , pp. 353-362 More about this Journal
Abstract
In this study, we investigated the effect of geographical variations on Sargassum thunbergii morphology to make a taxonomic reconsideration about infraspecific taxa in this species. In order to examine the morphological characteristics of S. thunbergii, total 27 matured and morphologically intact thalli were collected from the east, west and south coast in spring 2011. Interestingly, it was observed that the species populations on the west coast were characterized by short, thin and coarse thallus, and soft texture. However, the populations on the east coast showed thicker thallus, larger leaf and vesicle, and tougher texture. Thallus height of S. thunbergii was found to be similar at both east and west coast. Further, the height of the thallus and lateral branch of the species populations residing south coast were highest whereas the size of leaf and vesicle are shortest, in comparison with east and west coast species. Although morphological characteristics of the north east coast populations corresponded to the original description of S. thunbergii f. latifolium, we could not find exact morphological features and diagnostic characters to distinguish form in S. thunbergii. These results indicated that it is not the optimal characteristics to identify infraspecific form in this species. In contrast, morphological variations may signify the adaptation of this species to local environmental factors. Thus, we recommend that intraspecific morphological variation of S. thunbergii should be carefully used to identify infraspecific taxa.
Keywords
Sargassum thunbergii; morphological characteristics; geographical variation; infraspecific taxa;
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1 Kubler JE and SR Dudgeon. 1996. Temperature dependent change in the complexity of form of Chondrus crispus fronds. J. Exp. Mar. Biol. Ecol. 207:15-24.   DOI   ScienceOn
2 Li XM, Q Zhang, YZ Tang, YQ Yu, HL Liu and LX Li. 2014. Highly efficient photoprotective responses to high light stress in Sargassum thunbergii germlings, a representative brown macroalga of intertidal zone. J. Sea. Res. 85:491-498.   DOI   ScienceOn
3 Lobban CS and PJ Harrison. 1994. Seaweed ecology and physiology. Cambridge University Press, Cambridge.
4 Oak JH and IK Lee. 2005. Taxonomy of the Genus Sargassum (Fucales, Phaeophyceae) from Korea-1. Subgenus Bactrophycus Section Teretia. Algae 20:77-90.   DOI
5 Okamura K. 1923. Icones of Japanese Algae (5). Kazamashobo, Tokyo.
6 Park PJ, SJ Heo, EJ Park, SK Kim, HG Byun, BT Jeon and YJ Jeon. 2005. Reactive oxygen scavenging effect of enzymatic extracts from Sargassum thunbergii. J. Agr. Food Chem. 53:6666-6672.   DOI   ScienceOn
7 Ralph PJ, DA Morrison and A Addison. 1998. A quantitative study of the patterns of morphological variation within Hormosira banksii (Turner) Decaisne (Fucales: Phaeophyta) in south-eastern Australia. J. Exp. Mar. Biol. Ecol. 225:285-300.   DOI   ScienceOn
8 Yoshida T. 1983. Japanese species of Sargassum subgenus Bactrophycus (Phaeophyta, Fucales). J. Fac. Sci. Hokkaido Univ. Ser. 5 (Botany). 13:142-148.
9 Umezaki I. 1974. Ecological studies of Sargassum thunbergii (Mertens) O. Kuntze in Maizuru Bay, Japan Sea. Biol. Mag. Tokyo 87: 285-292.   DOI
10 Yendo K. 1907. The Fucaceae of Japan. J. Coll. Sci. Tokyo Imp. Univ. 21:1-174.
11 Yoo SA. 1975. Some members of the Fucales (Phaeophyta) in Korea. Thesis MS Seoul National Univ. 145 pp. pls. 26. Seoul.
12 Yu Y, Q Zhang, Z Lu, Y Tang, S Zhang and S Chu. 2012. Small-scale spatial and temporal reproductive variability of the brown macroalga Sargassum thunbergii in contrasting habitats: A study on the island of Xiaoheishan, Changdao Archipelago, China. Estuar. Coast. Shelf. Sci., 112:280-286.   DOI   ScienceOn
13 Zhang QS, W Li, S Liu and JH Pan. 2009. Size-dependence of reproductive allocation of Sargassum thunbergii (Sargassaceae, Phaeophyta) in Bohai Bay, China. Aquat. Bot. 91:194-198.   DOI   ScienceOn
14 Cho TH and SM Boo. 1998. Marine flora of Oeyondo Islands on the Yellow Sea, Korea: II. Brown Algae. Algae 13:13-27.
15 Chu S, Q Zhang, S Liu, S Zhang, Y Tang, Z Lu and Y Yu. 2011. Trade-off between vegetative regeneration and sexual reproduction of Sargassum thunbergii. Hydrobiologia 678:127-135.   DOI
16 Chu S, QS Zhang, SK Liu, YZ Tang, SB Zhang, ZC Lu and YQ Yu. 2012. Tolerance of Sargassum thunbergii germlings to thermal, osmotic and desiccation stress. Aquat. Bot. 96:1-6.   DOI   ScienceOn
17 D'Amours O and RE Scheibling. 2007. Effect of wave exposure on morphology, attachment strength and survival of the invasive green alga Codium fragile ssp. tomentosoides. J. Exp. Mar. Biol. Ecol. 351:129-142.   DOI   ScienceOn
18 de Paula EJ and EC de Oliveira F. 1982. Wave exposure and ecotypical differentiation in Sargassum cymosum (Phaeophyta-Fucales). Phycologia 21:145-153.   DOI
19 Ganzon-Fortes ET. 1997. Influence of tidal location on morphology, photosynthesis and pigments of the agarophyte, Gelidiella acerosa, from northern Philippines. J. Appl. Phycol. 9:525-32.
20 Fowler-Walker M, T Wernberg and S. Connell. 2006. Differences in kelp morphology between wave sheltered and exposed localities: morphologically plastic or fixed traits? Mar. Biol. 148:755-767.   DOI
21 Kim YH and JS Yoo. 1994. Patterns of Algal Succession in a Sargassum thunbergii (Phaeophyta) Dominated Rocky Intertidal Community. Algae 9:59-65.
22 Gerard VA and KH Mann. 1979. Growth production of Laminaria longicruris (Phaeophyta) populations exposed to different intensities of water movement. J. Phycol. 15:33-41.   DOI
23 Kalvas A and L Kautsky. 1998. Morphological variation in Fucus Vesiculosus populations along temperature and salinity gradients in Iceland. J. Mar. Biol. Ass. U.K. 78:985-1001.   DOI   ScienceOn
24 Kawamata S. 2001. Adaptive mechanical tolerance and dislodgement velocity of the kelp Laminaria japonica in wave-induced water motion. Mar. Ecol. Prog. Ser. 211:89-104.   DOI
25 Kim YH, EH Kim, C Lee, MH Kim and JR Rho. 2007. Two new monogalactosyl diacylglycerols from brown alga Sargassum thunbergii. Lipids 42:395-399.   DOI   ScienceOn
26 Koh CH, Y Kim and SG Kang. 1993. Size distribution, growth and production of Sargassum thunbergii in an intertidal zone of Padori, west coasts of Korea. Hydrobiologia 260/261:207-214.   DOI