By Armand M. Kuris (auth.), R. Gibson, J. Moore, P. Sundberg (eds.)

In any clinical self-discipline, conferences with awarded papers and discussions are the best stimulus to the development of data. Nemerteans have lengthy been mostly overlooked simply because their taxonomy is hard: the necessity for histological research of serial sections has proved inhibiting to so much zoologists. over the last two decades, in spite of the fact that, this fascinating phylum has attracted the eye either one of expanding numbers of taxonomists in addition to of staff drawn to many facets of, for instance, their ecology, evolution, body structure and nice constitution. The enthusiam stemming from the 1st foreign assembly held in Philadelphia in the course of December 1983 made it abudantly transparent that normal conferences of this kind might be persisted. the second one, on the Tjärnö Marine organic Laboratory in Sweden (August 1986), emphasised the significance of such foreign gatherings. The 3rd assembly was once held in Britain, at Y Coleg general, Bangor, North Wales, August 10--15, 1991, with 24 individuals from six nations. This quantity documents many of the papers given on the convention.

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Additional info for Advances in Nemertean Biology: Proceedings of the Third International Meeting on Nemertean Biology, Y Coleg Normal, Bangor, North Wales, August 10–15, 1991

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M. Goudsmit, E. L. Mills & G. E. Hampson, 1962. A study of the intertidal fauna of Barnstable Harbor, Massachusetts. Limnol. Oceanogr. 7: 63-79. , 1979. Tubulanus annulatus, an aposematic nemertean? BioI. J. linn. Soc. 12: 177-179. Wildish, D. , 1984. Secondary production of four sublittoral, soft-sediment amphipod populations in the Bay of Fundy. Can. J. Zool. 62: 1027-1033. Wilson, W. , 1990. Competition and predation in marine soft-sediment communities. Annu. Rev. Ecol. Syst. 21: 221-241. Withers, R.

6 cm partly filled with sediment from Elkhorn Slough was used. Water was added to cover the sediment and 11 or 14 worms were added (two experiments, one in dark and one in light). One end of the tray was then inclined so that a moisture gradient was made over the sediment. Distribution of worms with respect to moisture gradient was recorded several hours after the gradient was established. Worms used in these experiments were post reproductive individuals that had been collected from Tomales Bay approximately one month prior to the experiments and that had spawned in the laboratory.

02 would have to be postulated. Another consideration is that the bottom water temperature in the 0resund for most of the year (Christensen & Kanneworff, 1985) is well below the 12-13 °C temperature used in the feeding experiments, and this presumably would affect on the feeding rates in nature. Although the results of laboratory experiments are tentative, they do indicate that nemerteans can exert a potentially significant effect on benthic communities. Hoplonemertean predation may be directed to other species of amphipods which are relatively uncommon in the 0resund (49 m - 2), and possibly to the cumaceans, also not very abundant or diverse (30 m - 2 in 1989 and 85 m - 2 in 1982).

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