Abstract
Seasonal growth, fruiting behaviour and spore shedding ofHypnea valentiae are described. Populations of this alga were evident all through the year with two half-yearly growth cycles. Tetrasporophytes were abundant throughout the year with two half-yearly peaks. Carposporophytes occurred during the maximum growth periods.
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References
Coleman D C and Mathieson A C 1975 Investigations of New England marine algae. VII. Seasonal occurrence and reproduction of marine algae near Cape Cod, Massachussetts;Rhodora 77 76–104
Conover J T 1958 Seasonal growth of benthic marine plants as related to environmental factors in an estuary;Publ. Inst. Mar. Sci. Univ. Tex. 5 97–147
Conover J T 1964 The ecology, seasonal periodicity and distribution of benthic plants in some Texas lagoons;Bot. Mar. 7 4–41
Katada M 1955 Fundamental studies on the propagation of Gelidiaceous algae with special reference to shedding and adhesion of the spores, germination, growth and vegetative reproduction;J. Shimonoseki. Coll. Fish. 5 1–87
Katada M, Matsui T, Nakatsukasa T, Kojo J and Miura A 1953 Studies on the propagation of Gelidium. V. On shedding of spores ofGelidium amansii Lmx.Bull. Jpn. Soc. Sci. Fish. 19 471–473
Lawson G W 1957 Seasonal variation of intertidal zonation on the coast of Ghana in relation to tidal factor;J. Ecol. 45 831–860
Mshigeni K E 1976 Studies on the reproduction of selected species ofHypnea (Rhodophyta, Gigartinales) from Hawaii;Bot. Mar. 19 341–346
Rama Rao K 1970 Studies on growth cycles and phycocolloid content inHypnea musciformis (Wulf) Lamour;Bot. Mar. 18 163–165
Rama Rao K 1972 Role of critical tide factor in the vertical distribution ofHypnea musciformis (Wulf) Lamour.Proc. Indian Natl. Sci. Acad. 38 267–272
Rama Rao K 1976 Studies on Indian Hypneaceae. III. Ecology and seasonal succession ofHypnea valentiae (Turn.) Mont., a potential agarophyte on South East Indian Coast, at Krusadai Island.Proc. Symp. cultivation and utilisation of medicinal Aromatic Plants; 7–11
Rama Rao K 1977 Studies on Indian Hypneaceae. II. Reproductive capacity in two species ofHypnea over the different seasons:Bot. Mar. 20 33–39
Sreenivasa Rao P 1971 Studies onGelidiella acerosa (Forskal) Feldmann et Hamel. IV. Spore studies;Bull. Jpn. Soc. Phycol. 19 9–14
Subba Rangaiah G 1978Studies on the autecology of some Gigartinales of the Visakhapatnam Coast; Ph.D. thesis, Andhra University, Waltair, India
Subba Rangaiah G, Umamaheswara Rao M and Rao B G S 1975 Effect of salinity on spore shedding inGracilaria corticata;Curr. Sci. 44 717–718
Umamaheswara Rao M 1972a On the Gracilariaceae of the seas around India;J. Mar. Biol. Assoc. India 14 671–696
Umamaheswara Rao M 1972b Ecological observations on some intertidal algae of Mandapam Coast;Proc. Indian Natl. Sci. Acad. 38 298–307
Umamaheswara Rao M 1973 Growth and reproduction in some species ofGracilaria andGracilariopsis in the Palk Bay;Indian J. Fish. 20 182–192
Umamaheswara Rao M and Sreeramulu T 1964 An ecological study of some intertidal algae of the Visakhapatnam Coast;J. Ecol. 52 595–616
Umamaheswara Rao M and Subba Rangaiah G 1980 Effets of environmental factors on the shedding of tetraspores of some Gigartinales (Rhodophyta);Proc. Symp. Coastal Aquaculture; (in press)
Umamaheswara Rao M and Subba Rangaiah G 1981 Effects of environmental factors on the diurnal periodicity of tetraspores of some Gigartinales (Rhodophyta);Proc. Xth Int. Natl. Seaweed. Symp. 209–214
Umamaheswara Rao M 1976 Spore liberation onGracilaria corticata J. Ag. growing at Mandapam;J. Exp. Mar. Biol. Ecol. 21 91–98
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Rangaiah, G.S., Umamaheswara Rao, M. Seasonal growth, reproduction and spore shedding inHypnea valentiae (Turn.) Mont.. Proc. Indian Acad. Sci. 92, 473–482 (1983). https://doi.org/10.1007/BF03053021
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DOI: https://doi.org/10.1007/BF03053021