Abstract
The relationship between the phase of the moon and the emergence of the epitokous segments of the palolo worm Eunice viridis Gray has been known to the natives of the Samoan Islands for centuries. They predict the date and time of day when the emergence occurs so that they can be ready to catch the worms. This phenomenon is one of the best known examples of lunar periodicity. It was first described scientifically at the end of the last century. My own investigations concern the occurrence of the worms in the reef, in which they gnaw long tunnels through the massive blocks of coral limestone at levels characterized by the occurrence of symbiotic algae. Apparently the algae are the main sources of nutrition for the worms. The casting off of the epitokous segments occurs at the third quarter of the moon in October or November. An analysis of known dates on which the swarms of worms have appeared permitted a precise method of prediction to be formulated. The causality of this periodicity is discussed.
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Literature cited
Becke, L.: ‘Neath Australs kies’. Chapter XVIII: The palolo worm of Samoa, pp 289–294. London: John Milne 1909
Berrill, N. J.: Breeding and the sun and moon. Natural History, New York 1948
Brunelli, G. and H. Schoener: Die Frage der Fortpflanzungsperiodizität des Palolowurmes im Lichte der allgemeinen Biologie der Chaetopoden. C.R. 6e Congr. Int. Zool., Bern, pp 647–662 (1905)
Burrows, W.: Periodic spawning of “Palolo” worms in Pacific waters. Nature, Lond. 155, 47–48 (1945)
Burrows, W.: “Palolo”, Notes on the periodic appearance of the annelid worm Eunice viridis (Gray) in the Southwest Pacific Islands.J. Polynes. Soc. 64, 1, 137–154 (1955)
Caspers, H.: Rhythmische Erscheinungen in der Fortpflanzung von Clunio marinus (Dipt. Chiron.) und das Problem der lunaren Periodizität bei Organismen. Arch. Hydrobiol. Suppl. 18, 415–594 (1951)
Caspers, H.: Neue Beobachtungen über den Palolowurm auf Samoa. Atti VII Conf. intern. Soc. Studii dei Ritmi Biologici inclusa la Basimetria, Siena: 1–20 (1960)
Caspers, H.: Beobachtungen über Lebensraum und Schwärmperiodizität des Palolowurmes Eunice viridis (Polychaeta, Eunicidae). I. Die tages- und mondzeitliche Konstanz des Schwärmens; Bibliographie. Int. Revue ges. Hydrobiol. 46, 175–183 (1961)
Collin, A.: Bemerkungen über den eßbaren Palolowurm, Lysidice viridis (Gray): Anhang zu A. Krämer. Über den Bau der Korallenriffe und die Planktonverteilung an den Samoanischen Küsten. Lipsius u. Tischer, Kiel und Leipzig, pp 164–174, 1897
Corney, B. G.: Abstract of a paper on the periodicity of the swarming Palolo (Eunice viridis Gr.). J. Torquay natl Hist. Soc. 3 (1922)
Ehlers, E.: Über Palolo (Eunice viridis Gr.). Nachr. Kgl. ges. Wiss. Göttingen, Math.-Phys. Kl. 400–415 (1898)
Friedländer, B.: Über den sogenannten Palolowurm. Biol. Cbl. 18, 10, 337–357 (1898a)
Friedländer, B.: Notes on the Palolo. J. Polynes. Soc. 7, 44–46 (1898b)
Friedländer, B.: Nochmals der Palolo und die Frage nach unbekannten kosmischen Einflüssen auf physiologische Vorgänge. Biol. Cbl. 19, 8, 241–269 (1899a)
Friedländer, B.: Verbesserungen und Zusätze zu meinen Notizen über den Palolo. Biol. Cbl. 19, 16, 553–557 (1899b)
Friedländer, B.: Besprechung: E. Ehlers, Über Palolo (Eunice viridis Gr.), 1898. Biol. Cbl. 19, 8, 269–270 (1899c)
Friedländer, B.: Zur Geschichte der Palolofrage. Zool. Anz. 27, 716–722 (1904)
Gray, J. E.: An account of Palolo, a sea worm eaten in the Navigator Islands. Proc. Zool. Soc. London 15, 17–18 (1847)
Haffner, K. v.: Der Bau und die Verwandtschaftsbeziehungen des Palolowurmes Eunice viridis Gray (Polychaeta, Eunicidae). Int. Revue ges. Hydrobiol. 46, 184–204 (1961)
Hauenschild, C., A. Fischer and D. K. Hofmann: Untersuchungen am pazifischen Palolowurm Eunice viridis (Polychaeta) in Samoa. Helgoländer wiss. Meeresunters. 18, 254–295 (1968)
Hofmann, D. K.: Untersuchungen über die Regeneration des Prostomiums und des Hinterendes beim Polychaeten Eunice viridis Gray. Zool. Anz., Suppl. 33, Verh. Zool. Ges. 1969, 253–260 (1969)
Horst, R.: Wawo and Palolo worms. Nature, Lond. 69, 582 (1904)
Korringa, P.: Lunar periodicity, pp 917–934. In: Treatise on marine ecology and paleoecology. Ed. by J. W. Hedgpeth. Geol. Soc. America, Mem. 67, Vol. 1, 1957
Krämer, A.: Palolountersuchungen. Biol. Cbl. 19, 1, 15–30 (1899a)
Krämer, A.: Palolountersuchungen im Oktober und November 1898 in Samoa. Biol. Cbl. 19, 7, 237–239 (1899b)
Krämer, A.: Die Samoa-Inseln. Band II. Ethnographie, pp 399–403. Stuttgart: E. Schweizerbart 1903
MacDonald, J. D.: On the external anatomy and natural history of the genus of Annelida named Palolo by the Samoans and Mbalolo by the Fijian. Trans. Linn. Soc. London 22, pt. III, No. 16, 237–239 (1858)
MacIntosh, W. C.: On the Pacific, Atlantic and Japanese Palolo. Notes from the Gathy Mar. Lab. St. Andrews. Ann. a. Mag. natl. Hist. 7, 15 (1905)
McKay, C. G. R.: The rising of the palolo. A reliable astronomical formula for predicting the rising of the palolo. South Pacif. Comm. Q. Bull. 3, 3, 35 (1953)
McNeill, Fr.: “Palolo”, food worm of the Pacific. Aust. Mus. Mag. 11, 173–174 (1954)
Miller, C. D., Fl. Pen and H. Gatty: The nutritive value of the Palolo. Proc. Hawaiian Acad. Sci., Thirty-first Ann. Meeting 31, 9 (1955)
Miller, C. D. and Fl. Pen: Composition and nutritive value of Palolo (Palola siciliensis Grube). Pacif. Sci. 13, 191–194 (1959)
Neumann, D.: Tidal and lunar rhythms, pp 361–380. In: Handbook of behavioral neurobiology, Vol. 4. Ed. by J. Aschoff. New York: Plenum Publ. Corp. 1981
Powell, Th.: Remarks on the structure and habits of the coral-reef annelid, Palolo viridis. J. Linn. Soc. Zool. Lond. 16, 393–396 (1882)
Stair, J. B.: Palolo, a sea-worm eaten by the Samoans. J. Polynes. Soc. 6, 141–144 (1897)
Stair, J. B.: Palolo, a sea worm eaten by Samoans. Paradise of the Pacific 29, 1, 21–22 (1916)
Whitmee, S. J.: On the habits of Palola viridis. Proc. Zool. Soc. London: 496–502 (1875)
Woodworth, W. McM.: Vorläufiger Bericht über die Untersuchung des gesammelten Materials nebst einer Abbildung des Palolowurmes, pp 389–403. In: A. Krämer. Die Samoa-Inseln, Bd. II. Stuttgart: E. Schweizerbart 1903a
Woodworth, W. McM: Preliminary report on the “Palolo” worm of Samoa, Eunice viridis (Gray). Am. Nat. 37, 875–881 (1903b)
Woodworth, W. McM.: The palolo worm, Eunice viridis (Gray). Bull. Mus. comp. Zool. Harvard 51, 1–21 (1907)
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Caspers, H. Spawning periodicity and habitat of the palolo worm Eunice viridis (Polychaeta: Eunicidae) in the Samoan Islands. Marine Biology 79, 229–236 (1984). https://doi.org/10.1007/BF00393254
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DOI: https://doi.org/10.1007/BF00393254