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1 45 2 Vol.45, No OCEANOLOGIA ET LIMNOLOGIA SINICA Mar., 2014 Sargassum leizhouense(fucales, Phaeophyta) * ( ; ) (Sargassum leizhouense),, 3,,, ; (S. vachellianum) (S. bulbiferum) (S. henslowianum), 3, ; ; ; Q doi: /hyhz (Phaeophyta), (Phaeophyceae), (Fucales), (Sargassaceae), (Sargassum) Agardh(1820), 1000 ( ), 300 (Mattio et al, 2011;, 2012) Agardh(1848, 1889) 5 : (Phyllotrichia) (Schizophycus) (Bactrophycus) (Arthrophycus) (Sargassum), Womersley(1954) (Phyllotrichia) (Schizophycus),, (Phyllotrichia) (Bactrophycus), (Arthrophycus) (Tseng, 1985;, 2000), (, 2010), (, 1997;, 2006a; Ye et al, 2009),,,, (Sun et al, 2010),, (, 2006b; Xie et al, 2013) (, 1959, 2000),,,, (, 2006),,,,,, *, 2009B ;, ,, sufzhao@126.com :,, dongchaoliu696@hotmail.com : , :

2 292 45,,,, ( N, E), 1 5m 30 50, , : 20 C, 33, μmol/(m 2 s), 12L.. 12D, ,, 30 50,,,, , 30, 10cm,, L1100A ; 10 ( (2.71± 0.70)mm, (3.68±1.21)mm) ( (4.57± 0.80)mm, (6.64±1.85)mm) ( (5.78± 1.27)mm, (15.71±4.62)mm), 30 50,, (OLYMPUS BH-2), 1cm SPSS 13.0, ± 1.2.4, (, 2000),, , 1 2m ( 1), 3m, ( 2),,,, ( 2/3), ( 1/3), 2 5,,,,,,,,,, 1 3, 4 7, 1,,,,,,,,,,,,, 1 Fig.1 S. leizhouense inhabitant in intertidal area, (6.00±2.96), (3.11±0.96), (2.50±0.51) ( 1) ( 3),,, ( 4a),,,,,,, 1 3 ( 4b),,,,, 3 4 (11.81±4.85)cm (17.24±10.88)cm,

3 赵素芬等: 雷州马尾藻 Sargassum leizhouense(fucales, Phaeophyta)形态结构及分类研究 2期表1 Tab.1 雷州马尾藻的外部形态特征统计结果 Statistical results of morphological observations to S. leizhouense 大小(mm) 特征基部藻体长中部顶端 1.82± ± ± 固着器 14.75± ±5.05 主干(长度直径) 17.14± ±0.61 初生分枝直径 2.81±0.45 次生分枝长 56.07±31.60 次生分枝直径 1.13± ± ±0.13 叶长 80.00± ± ± ± ±1.88 叶宽 11.63±2.36 气囊(长直径) 5.59± ±0.64 气囊柄(长直径) 5.08± ±0.13 生殖托序长 63.18±19.27 生殖托(长直径) 10.26± ±0.18 生殖托柄(长直径) 2.26± ±0.12 球芽(长宽厚) 10.74± ± ±0.93 图3 Fig.3 图2 Fig 雷州马尾藻各部位的形态观察 Morphological observations of different parts of S. leizhouense a: 固着器; b: 主干; c: 球芽; d: 初生分枝基部; e: 次生分枝; f: 基部叶片; g: 气囊图4 Fig.4 雷州马尾藻的雌体(a)与雄体(b) Female (a) and male (b) individual of S. leizhouensis 雷州马尾藻的雌生殖托(a)与雄生殖托(b) Female (a) and male (b) receptacles on S. leizhouensis 枝上托枝数分别介于个和个之间, 平均分别为 27.95±6.21 个与 25.94±5.01 个

4 294 海洋与湖 45 卷沼结果表明(表2), 雷州马尾藻的雄性个体比雌性但由于其生殖托较小, 成熟雄性生殖托长度平均为个体重虽然雌体的初生分枝较宽, 次生分枝较长雌性的2.48倍, 托柄长平均为雌性的2.24倍, 单棵雄藻体中下部枝间距较小, 球芽藻叶与气囊皆较大, 性藻体比雌性藻体重18.7% 表2 Tab.2 雌体特征 2 雷州马尾藻藻体的外部形态特征统计结果 Statistics of morphological features of male and female thalli of S. leizhouense 基部雄体中部顶端基部生物量(g/m ) ± ±227.4 单棵重(g/株) 69.58± ±59.57 初生分枝长(cm) 96.60± ±41.89 初生分枝直径(mm) 中部顶端 2.55± ± ± ± ± ± ± ± ± ± ± ±3.03 次生分枝直径(mm) 1.42± ± ± ± ± ±0.14 次生分枝枝间距(cm) 1.81± ± ± ± ± ±0.35 次生分枝长(cm) 叶长(mm) ± ± ± ± ± ±12.46 叶宽(mm) 15.24± ± ± ± ± ±0.97 叶柄长(mm) 3.09± ± ± ± ± ±0.92 叶柄宽(mm) 1.55± ± ± ± ± ±0.17 气囊长(mm) 7.18± ± ± ± ± ±0.74 气囊直径(mm) 5.30± ± ± ± ± ±0.72 气囊柄长(mm) 4.78± ± ± ± ± ±1.32 气囊柄直径(mm) 0.71± ± ± ± ± ±0.13 生殖托长(mm) 7.96± ±5.80 生殖托宽(mm) 0.99± ±0.17 生殖托柄长(mm) 1.07± ±1.03 生殖托柄宽(mm) 0.42± ± ± ±0.54 生殖托分枝数(mm) 生殖窝孔(μm) ± ± ± ±10.60 球芽长(mm) 11.09± ±3.32 球芽宽(mm) 6.24± ±0.91 球芽厚(mm) 4.62± ± 内部结构观察营养体切面观察雷州马尾藻分枝的横切面结构由表皮层皮层和髓部三部分组成(图 5) 表皮层由 1 3 层含色素的细胞组成, 细胞长多角形, 大小为 (13.56±4.01)μm (10.54±2.39)μm; 皮层细胞排列不甚规则, 由 10.80±1.99 层圆形椭圆形或多角形细胞组成, 大小不一, 甚至相差悬殊, 平均为 (37.50±16.74)μm (28.68±11.33)μm; 髓部细胞比表皮细胞略大, 切面观近圆形, 大小为 (17.23± 5.06)μm (14.31±3.98)μm 藻体外被胶质层, 厚 (9.55±3.36)μm 生殖托切面观察图5 雌雄生殖托的横切面结 Fig.5 雷州马尾藻分枝的横切面观 The transverse section of S. leizhouense branches

5 2 : Sargassum leizhouense(fucales, Phaeophyta) 295,,, ;,,,, 17%, 57.6% 57.2%;, ( 3, 6) 18.7% 表 3 雷州马尾藻生殖托的横切面结构特征统计结果 Tab.3 Statistics of transverse section of S. leizhouense receptacles (μm) (8.38±1.56) (15.69±1.57) (7.05±1.50) (10.90±1.48) (μm 2 ) (19.56±2.47) (13.14±2.92) (18.40±2.77) (12.64±2.21) (μm 2 ) (11.42±2.11) (11.33±3.79) (14.15±6.59) (12.15±2.70) (μm 2 ) (14.10±2.17) (11.40±2.42) (14.71±2.93) (11.80±2.13) (μm 2 ) (207.76±26.63) (139.79±27.69) (195.50±59.67) (159.98±47.57) (μm 2 ) (290.38±10.54) (204.25±10.62) (283.46±36.39) (194.85±22.66) (μm 2 ) (313.00±72.66) (235.46±61.97) (309.44±52.46) (215.56±58.17) (μm 2 ) (25.09±9.30) (11.90±2.30) (29.36±11.13) (13.97±2.76) (μm 2 ) (39.22±12.47) (16.50±3.75) (22.58±1.66) (15.32±2.53) (μm 2 ) (46.70±5.14) (14.55±2.31) (26.73±6.64) (16.18±2.22) Fig.6 6 The transverse section of female and male receptacles in S. leizhouense a: ; b: ; c: 2.3 (, ), (, 2000), (Section Zygocarpicae Setchell) (Subsection Pseudozygocapicae Setchell) (2000),,,,,,,,,, Mattio (2008), ( ) ( ) ( )3 Wong (2004) (S. baccularia) (S. polycystum) Yoshida (1983) 1, Noiraksar (2008) 10,,,,, 3.2 (2000) 3,

6 , 16, 110,,,,,,,,,, (S. vachellianum),, : 1. (2000), ; (2003) 2 3, 2 4 ; 2., ; 3., ; 4.,,,,, (S. bulbiferum),,,, (2000) (Section Malacocarpicae),,,,,, (Racemosae), (Series Siliquosae) (S. henslowianum) (, 2000), (, ) ; Zou et al, 2011; Wei et al, 2012),, : 1., ; 2., ; 3., ; 4., (2000),,,, 3m, 50cm (, 2000);,, 1cm, 3 5mm 1.4cm, 40%, 7.2mm, 2 ;,,,,, ; 16.3cm, 1.9cm,, (2000),,, (2000),, (2000),, 86,, 4 4.1,,, 3m, (14.75±5.96)mm (11.8±5.05)mm,, (17.14± 8.02)mm, (3.58±0.61)mm 2 4,,, ( 2/3), (1.82±0.47) (2.81±0.45)mm, ( 1/3),, (1.30±0.38)mm 2 5,, (10.74±2.93)mm, (6.04± 1.32)mm, (3.77±0.93)mm,,,, (28.51±11.55) (80.00± 16.90)mm; (7.12± 1.88) (11.63±2.36)mm,,,,,, 1 3, 4 7, 1,

7 2 : Sargassum leizhouense(fucales, Phaeophyta) 297, (56.07±31.60)mm, (0.43± 0.13) (1.13±0.29)mm,,,,,,, (5.59±0.85) (7.18± 1.03)mm, (3.79±0.64) (5.30±0.59)mm, (5.08±1.17) (5.30± 1.86)mm, (0.43±0.13) (0.80±0.44)mm,,,,,,,,, 1 3, (7.96±1.84)mm, (0.99±0.11)mm, (1.07±0.43)mm, (0.42± 0.09)mm,,,,, 3 4, (19.78± 5.80)mm, (1.00±0.17)mm, (2.40±1.03)mm, (0.41±0.09)mm (11.81±4.85)cm (17.24± 10.88)cm, , (27.95±6.21) (25.94± 5.01) 1 2m , ( Sargassum) 2 2. ( Sargassum) 3 3. ( Pseudozygocapicae) 4 3., ( Pseudozygocapicae) 7 4., S. bulbiferum ,, S. vachellianum 6.,, S. leizhouense 7.,, S. henslowianum, , 12(3): ,,, , 31(10): ,, 2006a.., 11: 18 20,,, 2006b.., 1: 63 64,,, , 27(3): , :, 1 74,,, , 15(3): 赵素芬, 罗世菊, 孙会强等, 海藻与海藻栽培学. 北京 : 国防工业出版社, ,, , 2(2): 86 92,, ,. :, Agardh C A, Species Algarum Rite Cognitae, Cum Synonymis, Differentiis Specificis et Descriptionibus Succinctis. vol. 1. Berling, Lund: 168 Agardh J G, Species Genera et Ordines Algarum, Seu Descriptiones Succinctae Specierum, Generum et Ordinum, Quibus Algarum Regnum Constituitur. Algas Fucoideas Complectens, vol. 1. Gleerup, C W K, Lund: 363 Agardh J G, Species Sargassorum Australiae descriptae et dispositae. Öfversigt af Kongl. Svenska Vetenskaps- Adademiens Handlingar, 23: Mattio L, Payri C E, years of Sargassum taxonomy, facing the advent of DNA phylogenies. The Botanical Review, 77(1): Mattio L, Payri C E, Stiger-Pouvreau V, Taxonomic revision of Sargassum (Fucales, Phaeophyceae) from French Polynesia based on morphological and molecular analyses. Journal of Phycology, 44(6): Noiraksar T, Ajisaka T, Taxonomy and distribution of Sargassum (Phaeophyceae) in the Gulf o f Thailang. Journal of Applied Phycology, 20(5): Sun J Z, Ning X R, Le F F et al, Long term changes of biodiversity of benthic macroalgae in the intertidal zone of the Nanji islands. Acta Ecologica Sinica. 30(2): Tseng C K, Sargassum section Phyllocystae sect. nov., a new section of Sargassum subgenus Batrophycus. In: Abbot I A, Norris J N eds. Taxonomy of Economic Seaweed: With Reference to Some Pacific and Caribbean Species. vol. 1. California Sea Grant, La Jolla, CA: 15 Wei M Y, Li S D, Chen J X et al, Chemical constituents of the brown alga Sargassum henslowianum collected from the south China Sea. Chemistry of Natural Compounds, 48(4): Wong C L, Gan S Y, Phang S M, Morphological and molecular characterisation and differentiation of Sargassum baccularia and S. polycystum (Phaeophyta). Journal of Applied Phycology, 16(6): Womersley H B S, Australian species of Sargassum, subgenus Phyllotrichia. Australian Journal of Botany, 2(3): Xie E Y, Liu D C, Liu C et al, Artificial seed production and cultivation of the edible brown alga Sargassum naozhouense Tseng et Lu. Journal of Applied Phycology,

8 (2): Ye H, Zhou C H, Sun Y et al, Antioxidant activities in vitro of ethanol extract from brown seaweed Sargassum pallidum. Europe Food Research Technology, 230(1): Yoshida T, Konno T, Taxonomic study on Sargassum sagamianum Yendo and related species (Phaeophyta, Fucales). The Botanical Magazine, 96(3): Zou D H, Gao K S, Chen W Z, Photosynthetic carbon acquisition in Sargassum henslowianum (Fucales, Phaeophyta), with special reference to the comparison between the vegetative and reproductive tissues. Photosynthesis research, 107(2): TAXONOMIC RE-EXAMINATION ON SARGASSUM LEIZHOUENSE (FUCALES, PHAEOPHYTA) IN MORPHOLOGICAL ATTRIBUTES ZHAO Su-Fen 1, SUN Hui-Qiang 2, LIU Dong-Chao 1 (1. Fisheries College, Guangdong Ocean University, Zhanjiang , China; 2. Education Example Center, Guangdong Ocean University, Zhanjiang , China) Abstract Sargassum leizhouense inhabiting in Leizhou Peninsula, South China was re-examined in taxonomy in morphology and anatomic details. Differences between S. leizhouense and other three Sargassum species were compared; and the taxonomic keys and positions revised. It is showed that S. leizhouense belonged to Sargassum, Subgenus Sargassum, Section Zygocarpicae, Subsection Pseudozygocarpicae. Although S. leizhouense shared many morphological characters with S. vachellianum, S. bulbiferum in Zygocarpicae Section and S. henslowianum in Malacocarpicae section, we believe that the main differences between S. leizhouense and other species are in terms of bulbil and furcated basal leaves. The taxonomic revision on S. leizhouens shall be instructive to the culture and seedling nursery of the species. Key words Sargassum leizhouense; morphological characters; structural characters; taxonomic position

1 : , [ 2, 5, 8], 500 ml, 2,, 4 6 [ 6, 9-1 1] [ 10 ],, 60, ( Sargassum mcclurei) 4 6, 12, 7 ; [ 12] ( S. naozhou-, 5 cm, ense) 4 6, 6 100

1 : , [ 2, 5, 8], 500 ml, 2,, 4 6 [ 6, 9-1 1] [ 10 ],, 60, ( Sargassum mcclurei) 4 6, 12, 7 ; [ 12] ( S. naozhou-, 5 cm, ense) 4 6, 6 100 11 1 2 0 1 5 2 South China Fisheries Science Vol. 11, No. 1 Feb., 2015 doi: 10. 3969/ j. issn. 2095-0780. 2015. 01. 009,, (, 524088) : ( Sargassum henslouianum) ( 10 15 20 25 30 ), 2014 3 2014 5,, 3 5,,,