Abstract
The biology of two species of Donax, D. incarnatus Gmelin and D. spiculum Reeve on two beaches in south west India is described. Two year groups of D. incarnatus were present on both beaches, from settlements during the monsoon period in 1967 and 1968. At Shertallai, both groups were studied through the year, and data on growth, mortality and production are presented. At Cochin, the rate of growth was slower and the maximum size attained smaller, but mortality during the early monsoon precluded study of D. incarnatus through a full year. D. spiculum occurred at Cochin mainly during the pre-monsoon period, and at Shertallai during the post-monsoon. The species has a shorter life-span than D. incarnatus, but its irregular occurrence did not allow detailed production estimates.
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Literature Cited
Alagarswami, K.: Studies of some aspects of biology of the wedge clam Donax faba Gmelin from Mandapam coast in the Gulf of Manaar. J. mar. biol. Ass. India 8, 56–75 (1966)
Ansell, A. D. and K. F. Lander: Studies on the hard-shell clam, Venus mercenaria in British waters. III. Further observations on the seasonal biochemical cycle and on spawning. J. appl. Ecol. 4, 425–435 (1967).
—, F. A. Loosmore and K. F. Lander: Studies of the hard-shell clam, Venus mercenaria in British waters. II. Seasonal cycle in conditions and biochemical composition. J. appl. Ecol. 1, 83–55 (1964)
—, P. Sivadas, B. Narayanan, V. N. Sankaranaryanan and A. Trevallion: The ecology of two sandy beaches in south west India. I. Seasonal changes in physical and chemical factors, and in the macrofauna. Mar. Biol. 17, 38–62 (1972a).
— and A. Trevallion: The ecology of two sandy beaches in south west India. II. Notes on Emerita holthuisi. Mar. Biol. 17, 311–317 (1972b).
— and A. Trevallion: Studies on Tellina tenuis Da Costa 1. Seasonal growth and biochemical cycle. J. exp. mar. Biol. Ecol. 1, 220–235 (1967).
—, Behavioural adaptations of intertidal molluses from a tropical sandy beach. J. exp. mar. Biol. Ecol. 4, 9–35 (1969).
Chanley, P.: Donax fossor: a summer range extension of Donax variabilis, Nautilus 83, 1–14 (1969).
Coe, W. R.: Resurgent populations of littoral marine invertebrates and their dependence on ocean currents and tidal currents. Ecology 34, 225–229 (1953).
—: Ecology of the bean clam Donax gouldii on the coast of southern California. Ecology 36, 512–514 (1955).
—: Fluctuations in populations of littoral marine invertebrates. J. mar. Res. 15, 212–232 (1956).
Crichton, M. O.: Marine shells of Madras. J. Bombay nat. Hist. Soc. 42, 323–341 (1942).
Edwards, R. R. C., J. H. S. Blaxter, U. K. Gopalan and C. V. Mathew: A comparison of standard oxygen consumption of temperate and tropical bottom living marine fish. Comp. Biochem. Physiol. 34, 491–495 (1970).
Loesch, H. C.: Studies of the ecology of two species of Donax on Mustang Island, Texas. Publs Inst. mar. Sci. Univ. Tex. 4, 201–227 (1957).
MacIntyre, A. and A. Eleftheriou: The bottom fauna of a flatfish nursery ground. J. mar. biol. Ass. U.K. 48, 113–142 (1968).
Nayar, K. N.: Studies on the growth of the wedge clam, Donax (Latona) cuneatus Linnaeus. Indian J. Fish. 2, 325–348 (1954).
Orton, J. H.: Severe environmental mortality among Abra (Syndesmya) alba, Donax vittatus and other organisms of the Lancashire coast. Nature, Lond. 124, p. 911 (1929).
Pearse, A. S., H. J. Humm and G. W. Wharton: Ecology of sand beaches at Beaufort, N.C. Ecol. Monogr. 12, 135–190 (1942).
Pichon, M.: Contribution à l'étude des peuplements de la zone intertidale sur sables fin et sables vaseux non fixes dans la région de Tulear. Recl Trav. Stn mar. Endoume (fasc. hors série supplément) 7, 57–100 (1967).
Sanders, H.: Oceanography of Long Island Sand, 1952–1954. 10. The biology of marine bottom communities. Bull. Bingham oceanogr. Coll. 15, 345–414 (1956).
Trevallion, A.: Studies on Tellina tenuis Da Costa. III. Aspects of general biology and energy flow. J. exp. mar. Biol. Ecol. 7, 95–122 (1971).
Wade, B.: Notes on the ecology of Donax denticulatus (Linne) Proc. Gulf Caribb. Fish. Inst. (17th Ann. Sess.) 36–41 (1964).
— Studies on the biology of the West Indian beach clam. Donax denticulatus Linne 1. Ecology. Bull. mar. Sci. 17, 149–174 (1967).
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Communicated by J. H. S. Blaxter, Oban
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Ansell, A.D., Sivadas, P., Narayanan, B. et al. The ecology of two sandy beaches in south west India. III. Observations on the population of Donax incarnatus and D. spiculum . Marine Biology 17, 318–332 (1972). https://doi.org/10.1007/BF00366743
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DOI: https://doi.org/10.1007/BF00366743