한국산 갈조식물 지충이의 지리적 형태변이
Geographical Variations of Sargassum thunbergii Morphology in Korea
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In this study, we investigated the effect of geographical variations on Sargassum thunbergiimorphology to make a taxonomic reconsideration about infraspecific taxa in this species. Inorder to examine the morphological characteristics of S. thunbergii, total 27 matured and morphologicallyintact 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, thinand coarse thallus, and soft texture. However, the populations on the east coast showed thickerthallus, larger leaf and vesicle, and tougher texture. Thallus height of S. thunbergii was found tobe similar at both east and west coast. Further, the height of the thallus and lateral branch of thespecies 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 thenorth 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 infraspecificform in this species. In contrast, morphological variations may signify the adaptation of thisspecies to local environmental factors. Thus, we recommend that intraspecific morphologicalvariation of S. thunbergii should be carefully used to identify infraspecific taxa.
Abstract
In this study, we investigated the effect of geographical variations on Sargassum thunbergiimorphology to make a taxonomic reconsideration about infraspecific taxa in this species. Inorder to examine the morphological characteristics of S. thunbergii, total 27 matured and morphologicallyintact 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, thinand coarse thallus, and soft texture. However, the populations on the east coast showed thickerthallus, larger leaf and vesicle, and tougher texture. Thallus height of S. thunbergii was found tobe similar at both east and west coast. Further, the height of the thallus and lateral branch of thespecies 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 thenorth 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 infraspecificform in this species. In contrast, morphological variations may signify the adaptation of thisspecies to local environmental factors. Thus, we recommend that intraspecific morphologicalvariation of S. thunbergii should be carefully used to identify infraspecific taxa.
참고문헌 (26)
- Cho TH, "Marine flora of Oeyondo Islands on the Yellow Sea, Korea: II. Brown Algae", Algae, 13, pp.13~27 (1998)
- Chu S, "Trade-off between vegetative regeneration and sexual reproduction of Sargassum thunbergii", Hydrobiologia, 678, pp.127~135 (2011)
- Chu S, "Tolerance of Sargassum thunbergii germlings to thermal, osmotic and desiccation stress", Aquat. Bot, 96, pp.1~6 (2012)
- D’Amours O, "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, pp.129~142 (2007)
- de Paula EJ, "Wave exposure and ecotypical differentiation in Sargassum cymosum(Phaeophyta-Fucales)", Phycologia, 21, pp.145~153 (1982)
- Fowler-Walker M, "Differences in kelp morphology between wave sheltered and exposed localities: morphologically plastic or fixed traits?", Mar. Biol, 148, pp.755~767 (2006)
- Ganzon-Fortes ET., "Influence of tidal location on morphology, photosynthesis and pigments of the agarophyte, Gelidiella acerosa, from northern Philippines", J. Appl. Phycol, 9, pp.525~532 (1997)
- Gerard VA, "Growth production of Laminaria longicruris (Phaeophyta) populations exposed to different intensities of water movement", J. Phycol, 15, pp.33~41 (1979)
- Kalvas A, "Morphological variation in Fucus Vesiculosus populations along temperature and salinity gradients in Iceland", J. Mar. Biol. Ass. U.K, 78, pp.985~1001 (1998)
- Kawamata S., "Adaptive mechanical tolerance and dislodgement velocity of the kelp Laminaria japonica in waveinduced water motion", Mar. Ecol. Prog. Ser, 211, pp.89~104 (2001)
- Kim YH, "Patterns of Algal Succession in a Sargassum thunbergii (Phaeophyta) Dominated Rocky Intertidal Community", Algae, 9, pp.59~65 (1994)
- Kim YH, "Two new monogalactosyl diacylglycerols from brown alga Sargassum thunbergii", Lipids, 42, pp.395~399 (2007)
- Koh CH, "Size distribution, growth and production of Sargassum thunbergii in an intertidal zone of Padori, west coasts of Korea", Hydrobiologia, 260, pp.261 (1993), 207~214
- Kübler JE, "Temperature dependent change in the complexity of form of Chondrus crispus fronds", J. Exp. Mar. Biol. Ecol, 207, pp.15~24 (1996)
- Li XM, "Highly efficient photoprotective responses to high light stress in Sargassum thunbergii germlings, a representative brown macroalga of intertidal zone", J. Sea. Res, 85, pp.491~498 (2014)
- Lobban CS, "Seaweed ecology and physiology" (1994), Cambridge University Press
- 옥정현, "한국산 갈조식물 모자반속(Sarassum)의 분류 Ⅰ. Bactrophycus 아속 Teretia절", ALGAE, 20(2), pp.77~90 (2005), 한국조류학회I
- Okamura K., "Icones of Japanese Algae (5)" (1923), Kazamashobo
- Park PJ, "Reactive oxygen scavenging effect of enzymatic extracts from Sargassum thunbergii", J. Agr. Food Chem, 53, pp.6666~6672 (2005)
- Ralph PJ, "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, pp.285~300 (1998)
- Umezaki I, "Ecological studies of Sargassum thunbergii (Mertens) O. Kuntze in Maizuru Bay, Japan Sea", Biol. Mag. Tokyo, 87, pp.285~292 (1974)
- Yendo K., "The Fucaceae of Japan", J. Coll. Sci. Tokyo Imp. Univ, 21, pp.1~174 (1907)
- Yoo SA., "Some members of the Fucales (Phaeophyta) in Korea", 석사, pp.1975
- Yoshida T., "Japanese species of Sargassum subgenus Bactrophycus (Phaeophyta, Fucales)", J. Fac. Sci. Hokkaido Univ. Ser. 5 (Botany), 13, pp.142~148 (1983)
- Yu Y, "Smallscale 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, pp.280~286 (2012)
- Zhang QS, "Size-dependence of reproductive allocation of Sargassum thunbergii (Sargassaceae, Phaeophyta) in Bohai Bay, China", Aquat. Bot, 91, pp.194~198 (2009)