我国西沙群岛石花菜属一新纪录变种: 匍匐石花菜扁平变种 Gelidium pusillum var. pacificum Taylor

doi:10.11978/2015061

Abstract

Abstract: A survey of macroalgal resources in the Xisha Islands was carried out from March to April 2014. A species of Gelidium sp. was collected and identified as Gelidium pusillum var. pacificum Taylor. The main characters of this species were as follows: 1. thallus purple-red, caespitose; 2. plants up to 1-2 cm high, composed of creeping and erect axes, creeping axes slender cylindrical, and the upper part of erect axes compressed, with irregular or pinnated branches; 3. in transverse sections, cortices consist of 2-3 layers, and rhizoidal filaments were abundant in medulla; 4. tetrasporangium ovoid in transverse view, embedded in the cortical cells, divided cruciately and developed on the apical part of branchlets, forming sori; and 5. the apical cell of the main axis was globose, dome-shaped, protruding out of cortical cells. Gelidium pusillum var. pacificum can be segregated from other variants within Gelidium pusillum by combining characters 1 to 3. Characters 5 can be used to distinguish Gelidium pusillum var. pacificum from small sized Pterocladiella species, such as Pterocladiella caerulescens. Characters 4 cannot be used to discriminate it from its related species, because the size and shape of sori vary similarly. Thus, apical morphology may be a promising vegetative attribute to segregate small sized Gelidium species from some similar Pterocladiella species found in China. Gelidium pusillum var. pacificum was the first record in Sansha region of the South China Sea, which enriched the species diversity of this marine algal flora and further facilitated the analysis of general aspects of this marine algal flora.

Key words: Rhodophyta, Gelidium, apical cell, morphological taxonomy, vegetative characters, marine algal flora

WANG Xulei, WANG Guangce, XIA Bangmei. A new record of genus Gelidium in the Xisha Islands of China, G. pusillum var. pacificum Taylor (Gelidiales, Rhodophyta)[J].Journal of Tropical Oceanography, 2016, 35(2): 76-82.

References

[1] 夏邦美, 王永强, 夏恩湛, 等, 2004. 中国海藻志: 第二卷红藻门: 第三册石花菜目隐丝藻目胭脂藻目[M]. 北京: 科学出版社: 1–203. XIA BANGMEI, WANG YOUNGQIANG, XIA ENZHAN, et al, 2004. Flora algarum marinarum sinicarum Tomus II Rhodophyta No. Ⅲ Gelidiales Cryptonemiales Hilden?brandiales[M]. Beijing: Science Press: 1–203 (in Chinese).
[2] 夏邦美, 王广策, 王永强, 2013. 三沙市南海诸岛底栖海藻区系调查及其与其它相关区系的比较分析[J]. 海洋与湖沼, 44(6): 1681–1704. XIA BANGMEI, WANG GUANGCECE, WANG YOUNGQIANG, 2013. The benthic algal flora recorded in Sansha region, South China Sea and comparison with those of related areas [J]. Oceanologia et Limnologia Sinica, 44(6): 1681–704 (in Chinese).
[3] ABBOTT I A, HOLLENBERG G J, 1976. Marine algae of California [M]. California: Stanfrod University Press: 1–827.
[4] AKATSUKA I, 1981. Comparative morphology of the outermost cortical cells in the Gelidiaceae (Rhodophyta) of Japan [J]. Nova Hedwigia, 35: 453–463.
[5] BOLD H C, WYNNE M J, 1982. Introduction to the algae[M]. New Jersey: Prentice-Hall: 1–706.
[6] B?RGESEN F, MME P L, FRéMY P, 1925. Marine Algae from the Canary Islands, especially from Teneriffe and Gran Canaria [M]. K?benhavn: Ejnar Munksgaard: 1–97.
[7] DIXON P, 1961. On the classification of the Florideae with particular reference to the position of the Gelidiaceae [J]. Bot Mar, 3: 1–16.
[8] FAN K C, 1961. Morphological studies of the Gelidiales [M]. California: University of California Press: 315–368.
[9] KRAFT G T, 1981. Rhodophyta: Morphology and classifica?tion [G]//LOBBAN C S, WYNNE M J. The Biology of the Seaweeds. Berkeley: University of California Press: 6–51.
[10] KYLIN H, 1923. Studien über die Entwicklungsgeschichte der Florideen [M]. Stockholm: Svenska Vet Acad Handl: 1–139. KYLIN H, 1923. Studies on the evolution of Florideae [M]. Stockholm: Svenska Vet Acad Handl: 1–139 (in German).
[11] LAMOUROUX J V, 1813. Essai sur les genres de la famille des thalassiophytes non articulées[M]. Paris: Annales du Muséum d'Histoire Naturelle: 21–47, 115–139, 267–293. LAMOUROUX J V, 1813. Essay on the kinds of the family unarticulated Thalassiophytes[M]. Paris: Annals of the Museum of Natural History: 21–47, 115–139, 267–293 (in French).
[12] LEE H B, 1994. Some species of Gelidium (Gelidiales, Rhodophyta) from Korea [G]// ABBOTT I A. Taxonomy of economic seaweeds Ⅳ. California: California Sea Grant College, University of California: 67–79.
[13] LOBBAN C S, WYNNE M J, 1981. The biology of seaweeds [M]. California: University of California Press: 1–786.
[14] GUIRY M D, GUIRY G M, 2015. AlgaeBase [DB/OL]. Galway: World-wide electronic publication, National University of Ireland. [2015-04-17]. http: //www. algaebase.org.
[15] OKAMURA K, KōSHūJOS, 1934. On Gelidium and Pterocladia of Japan[M]. Tokyo: Imperial Fisheries Institute: 47–67.
[16] PAPENFUSS G F, 1966. A review of the present system of classification of the florideophycideae [J]. Phycologia, 5: 247–255.
[17] PUESCHEL C M, COLE K M, 1982. Rhodophycean pit plugs: an ultrastructural survey with taxonomic implications [J]. Am J Bot, 69: 703–720.
[18] RODRIGUEZ D, SANTELICES B, 1988. Separation of Gelidium and Pterocladia on vegetative characters [G]// ABBOTT I A. Taxonomy of Economic Seaweeds with reference to some Pacific and Caribbean speciesⅡ. California: California Sea Grant College, University of California: 115–125.
[19] SANTELICES B, STEWART J G, 1985. Pacific species of Gelidium Lamouroux and other Gelidiales (Rhodophyta), with keys and descriptions to the common or economically important species [G]// ABBOTT I A, NORRIS J N. Taxonomy of Economic Seaweeds with reference to some Pacific and Caribbean species. California: California Sea Grant College, University of California: 17–31.
[20] SANTELICES B, 1988. Taxonomic studies on Chinese Gelidiales (Rhodophyta) [G]// ABBOTT I A. Taxonomy of Economic Seaweeds with reference to some Pacific and Caribbean speciesⅡ. California: California Sea Grant College, University of California: 91–107.
[21] SANTELICES B, 1990. New and old problems in the taxonomy of the Gelidiales (Rhodophyta) [J]. Hydrobiologia, 204/205: 125–135.
[22] SANTELICES B, HOMMERSAND M, 1997. Pterocladiella, a new genus in the Gelidiaceae (Gelidiales, Rhodophyta) [J]. Phycologia, 36: 114–119.
[23] SANTELICES B, AEDO D, HORMAZáBAL M, et al, 2003. Field testing of inter-and intraspecific coalescence among mid- intertidal red algae[J]. Mar Ecol Prog Ser, 250: 91–103.
[24] SCHMITZ F, 1889. Systematische übersicht der bisher bekannten Gattungen der Florideen [J]. Flora Jena, 72: 435–456. SCHMITZ F, 1889. Systematic review of the known genera of Florideae[J]. Flora Jena, 72: 435–456 (in German).
[25] SILVA P C, ME?EZ E G, MOE R L, 1987. Catalog of the benthic marine algae of the Philippines [M]. Washington D C: Smithsonian Contributions to the Marine Sciences: 1–179.
[26] SOUTH G R, SKELTON P A, 2003. Catalogue of the marine benthic macroalgae of the Fiji Islands, South Pacific [J]. Aust Syst Bot, 16: 699–758.
[27] SREENIVASA R P, TRIVEDI M K, 1980. Reproduction in Gelidiella [J]. Taxonomy of Algae: 255–260.
[28] STEWART J G, 1968. Morphological variation in Pterocladia pyramidalel[J]. J Phycol, 4: 76–84.
[29] TAYLOR W, 1945. Pacific marine algae of the Allan Hancock expeditions to the Galapagos Islands [M]. California: The University of Southern California Press: 1–528.
[30] XIA BANGMEI, WANG YONGQIANG, 1999. Taxonomic studies on Pterocladiella (Gelidiaceae, Gelidiales, Rhodophyta) from China[M]// ABBOTT I A. Taxonomy of economic Seaweeds with reference to some Pacific speciesⅦ. California: California Sea Grant College, University of California: 81–86.
[31] XIA BANGMEI, TSENG C K, WANG YONGQIANG, 2004. Studies on Chinese species of Gelidiella and Pterocladiella (Gelidiales, Rhodophyta) [J]. Hydrobiologia, 512: 201–207.

A new record of genus Gelidium in the Xisha Islands of China, G. pusillum var. pacificum Taylor (Gelidiales, Rhodophyta)

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 2

Metrics

Comments

Recommended 0

[1]	Yongmei LI, Rui LIU, Nan YANG, Lanping DING, Bingxin HUANG, Yixiao WANG, Yanwei CHEN. Morphological taxonomy of four species of genus Gracilaria (Gracilariaceae, Rhodophyta) from Hainan Province, China [J]. Journal of Tropical Oceanography, 2018, 37(4): 29-37.
[2]	DING Lan-ping, ZHONG Li-min, TAN Hua-qiang, HUANG Bing-xin. A morphological study on marine red algal Polysiphonia scopulorum var. villum [J]. Journal of Tropical Oceanography, 2015, 34(1): 42-48.