Abstract

Polysiphonia pacifica is rhodomelaceous red algal species that includes five varieties in Pacific Ocean: P. pacifica var. delicatula, P. pacifica var. distans, P. pacifica var. determinata, P. pacifica var. disticha, and P. pacifica var. gracilis. We here report morphology and phylogeny of P. pacifica to confirm the relationships among previously described varieties as a loan of type specimens from US and to assess phylogenetic relationships of closely related species using plastid protein-coding rbcL gene. Polysiphonia pacifica is distinguished by having creeping filaments attached by unicellular rhizoids not cut off by cross walls, four pericentral cells, ecorticate, trichoblasts rare, ultimate branchlets attenuate at the tip but not pungent, and tetrasporangia in long straight series in the ultimate branchlets. The protein-coding plastid rbcL gene sequence data show that P. pacifica is distinctly different from the superficially similar species, P. morrowii and P. stricta. However, the rbcL sequences of P. pacifica var. pacifica and var. disticha are identical though they have morphological variation.

주제어

#Ceramiales   #morphology   #phylogeny   #Polysiphonia pacifica   #rbcL   #Rhodophyta   #taxonomy  

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참고문헌 (18)

1. Abbott I.A. and Hollenberg G.J. 1976. Marine algae of California. Stanford University Press, Stanford, California. 827 pp 
2. Aguilera V.C. and Ganesan E.K. 1981. Life history of the marine red alga Pseudogloiophloea halliae (Nemalionales, Chatangiaceae) in culture. Boletin Instituto Oceanografico Venezolano Universidad de. Oriente 20: 74-55 
3. Alvarez-Borrego S. 1983. Gulf of California. In: Ketchum C.B.H. (ed.), Estuaries and Enclosed Seas. Elsevier Scientific. Publ. Co., Amsterdam. 427-449 pp 
4. Dawson E.Y. 1949. Resultados preliminares de un reconocimiento de la Costa Pacifico de Mexico. Rev. Soc. Mex. Hist. Nat. 9: 215-255. 1 chart 
5. Flores-Ramirez S. 1994. Ecologia del rorcual comun (Balenoptera edeni) en Bahia de la Paz, B.C.S., Mexico. Unpublished Master in Science thesis. UABCS, Departamento de Biologia Marina 80 pp 
6. Foster M.S., Riosmena-Rodriguez R., Steller D.L. and J. Woelkerling Wm. 1997. Living rhodolith beds in the Gulf of California and their implication for paleoenviromental interpretation. In: Johnson M.E. and Ledesma-Vazquez J. (eds), Pliocene Carbonates and Related Facies Flanking the Gulf of California, Baja California, Mexico. Special Paper 318. The Geological Society of America. U.S.A. pp.127-140 
7. Howe M.A. 1911. Phycological studies -V. Some marine algae of Lower California, Mexico. Bull. Torrey Bot. Club 38: 489-514 
8. Huisman J.M. 1986. The red algal genus Scinaia (Galaxauraceae, Nemaliales) from Australia. Phycologia 25: 271-296 
9. Huisman J.M. 1987. The taxonomy and life history of Gloiophloea (Galaxauraceae, Rhodophyta). Phycologia 26: 167-174 
10. Kajimura M. 1988. Three New Deep-water Species of Scinaia (Galaxauraceae, Rhodophyta) from the Sea of Japan. Bot. Mar. 31: 175-185 
11. Kajimura M. 1991. Scinaia pseudo-moniliformis sp. nov. (Galaxauraceae, Rhodophyta) from the Sea of Japan. Bot. Mar. 34: 513-520 
12. Marrack E. 1999. The relationship between water motion and living rhodolith beds in the southwestern Gulf of California, Mexico. Pal. 14: 159-171 
13. Millar A.J.K. 1990. Marine algae from the Coffs Harbor region, northern New South Wales. Australian Syst. Bot. 3: 295-593 pp 
14. Ramus J. 1969. The developmental sequence of the Marine Red Alga Pseudogloiophloea in culture. Univ. Califor. Publ. Bot. 52: 1-42 
15. Robles-Gil M.S.G. 1998. El clima de la Ciudad de La Paz, Baja California Sur. MS Thesis. UNAM, Mexico 233 pp 
16. Steller D.L., Riosmena-Rodriguez R., Foster M.S. and Roberts C.A. 2003. Rhodolith bed diversity in the Gulf of California: the importance of rhodolith structure and consequences of disturbance. Aquatic Conserv: Mar. Freshw. Ecosyst. 13: S5-S20 
17. Yoshida J. 1998. Marine Algae from Japan. Uchikayada, Tokyo. 655 pp 
18. Zar J. H. 1996. Bioestatistical analysis. Third edition. Prentice Hall. New Jersey. 662 pp 

이 논문을 인용한 문헌 (1)

1. Kim, Myung-Sook ; Yang, Eun-Chang 2006. "" Algae, 21(3): 287~294  원문보기 상세보기