Abstract
Nematocysts of the scyphozoans Pelagia noctiluca and Rhizostoma pulmo were examined. In R. pulmo 4 types of nematocyst were observed: heterotrichous microbasic euryteles; holotrichous isorhizas; atrichous a-isorhizas; and atrichous α-isorhizas. In P. noctiluca 5 types of nematocyst were seen: heterotrichous microbasic euryteles; heterotrichous isorhizas (previously described as atrichous isorhizas); holotrichous O-isorhizas; atrichous a-isorhizas; and an undescribed type, which in its structure and discharge mechanism resembles microbasic p-mastigophores. The results show, in both P. noctiluca and R. pulmo, a greater variety of nematocysts than described in previous studies.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Avian, M., L. Rottini Sandrini & F. Bratina, 1991. Six types of cnidocysts in Pelagia noctiluca. Proc. 2nd Workshop on Jelly-fish in the Mediterranean, Trieste 1987, MAP Tech- nical Rep. Ser. No. 47: 217–226.
Burnett, J. W., 1971. An electron microscopic study of two nematocysts in the tentacle of Cyanea capillata. Chesapeake Sci. 12: 67–71.
Calder, D. R., 1971. Nematocysts of polyps of Aurelia, Chrysaora, and Cyanea, and their utility in identification. Trans. Am. microsc. Soc. 90: 269–274.
Calder, D. R., 1972. Nematocysts of the medusa stage of Rhopilema verrilli (Scyphozoa, Rhizostomeae). Trans. Am. microsc. Soc. 91: 213–216.
Calder, D. R., 1974. Nematocysts of the coronate scyphome- dusa, Linuche unguiculata, with a brief reexamination of scyphozoan nematocyst classification. Chesapeake Sci. 15: 170–173.
Calder, D. R., 1977. Nematocysts of the ephyra stages of Aurelia, Chrysaora, Cyanea, and Rhopilema (Cnidaria, Scyphozoa). Trans. Am. microsc. Soc. 96: 13–19.
Calder, D. R., 1983. Nematocysts of stages in the life cycle of Stomolophus meleagris, with keys to scyphistomae and ephyrae of some Western Atlantic Scyphozoa. Can. J. Zool. 61: 1185–1192.
Conklin, E. J., C. H. Bigger & R. N. Mariscal, 1977. The formation and taxonomic status of the microbasic q-masti- gophore nematocyst of sea anemones. Biol. Bull. 152: 159–168.
Johnstone-Papenfuss, E., 1936. The utility of the nematocysts in the classification of certain Scyphomedusae. I: Cyanea capillata, Cyanea palmstruchii, Dactylometra quinquecirrha, Dactylometra quinquecirrha var. chesapeakei, and Chrysaora hysoscella. Acta Univ. lund., N. F. Avd. 2, 31 (11): 1–26.
Krasinska, S., 1914. Beiträge zur Histologie der Medusen. Z. wiss. Zool. 109: 256–348.
Mariscal, R. N., 1974. Nematocysts. In L. Muscatine & H. M. Lenhoff (eds), Coelenterate Biology, Academic Press, N.Y.: 129–178.
Östman, C., 1988. Nematocysts as taxonomic criteria within the family Campanulariidae, Hydrozoa. In D. A. Hessinger & H. M. Lenhoff(eds), The Biology of Nemato- cysts, Academic Press, N. Y.: 501–517.
Östman, C, 1991. Scanning electron microscopic obser- vations on Scandinavian scyphozoan with special refer- ence to their nematocysts. Proc. 2nd Workshop on Jelly- fish in the Mediterranean, Trieste 1987, MAP Technical Rep. Ser. No. 47: 283–292.
Rice, N. E. & W. A. Powell, 1972. Observations on three species of jellyfishes from Chesapeake Bay with special reference to their toxins. II, Cyanea capillata. Biol. Bull. 143: 617–22.
Russell, F. S., 1970. The Medusae of the British Isles. Vol. II, Pelagic Scyphozoa with a supplement to the first volume on Hydromedusae. Cambridge Univ. Press. Cambridge, 284 pp.
Salleo, A., G. La Spada, M. G. Denaro & G. Falzea, 1986. Effects produced by SCN- and thioglycolate on isolated nematocysts of Pelagia noctiluca. Cell, molec. Biol. 32: 661–666.
Salleo, A., G. La Spada, G. Falzea & M. G. Denaro, 1983. Discharging effectiveness of lyotropic anions on nemato- cysts of Pelagia noctiluca. Molec. Physiol. 6: 19–26.
Salleo, A., G. La Spada, G. Falzea & M. G. Denaro, 1984. pH-induced collapse of the capsular wall of isolated nema- tocysts of Pelagia noctiluca. Cell. molec. Biol. 30: 91–94.
Weill, R., 1934. Contribution a I’étude des Cnidaires et de leurs nématocystes. Trav. Stn zool. Wimereux, 10: 1–347; 11: 349–701.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1991 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Avian, M., Del Negro, P., Sandrini, L.R. (1991). A comparative analysis of nematocysts in Pelagia noctiluca and Rhizostoma pulmo from the North Adriatic Sea. In: Williams, R.B., Cornelius, P.F.S., Hughes, R.G., Robson, E.A. (eds) Coelenterate Biology: Recent Research on Cnidaria and Ctenophora. Developments in Hydrobiology, vol 66. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3240-4_86
Download citation
DOI: https://doi.org/10.1007/978-94-011-3240-4_86
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5428-7
Online ISBN: 978-94-011-3240-4
eBook Packages: Springer Book Archive