Host-Adoption in the Commensal Polychaete Nereis Fucata
- 1 February 1969
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of the Marine Biological Association of the United Kingdom
- Vol. 49 (1) , 121-127
- https://doi.org/10.1017/s0025315400046452
Abstract
The adults ofNereis fucata (Savigny) are commensal with hermit crabs and live within the upper whorls of the shells of their hosts. The mechanism of host adoption has been examined in juveniles reared in the laboratory. There are two distinct phases in their response to their host. The first is a searching phase during which the anterior two-thirds of the worm is extended from the tube and makes wide sweeping movements in its immediate vicinity. This phase can be initiated in the laboratory solely by vibrations in the substrate; the presence of a hermit crab is not required. The second phase begins as soon as a suitable gastropod shell is touched, when the worm immediately leaves its tube and enters the shell. In the laboratory this phase can be achieved without the presence of a hermit crab, so that it is presumably primarily dependent upon the tactile stimuli received from the surface of the shell. It is argued that in nature only hermit-crab shells would commonly give this combination of stimuli to the worm and that the association betweenNereis fucata and hermit crabs is not accidental but commensal.Keywords
This publication has 5 references indexed in Scilit:
- The reproduction and larval development of Nereis fucata (Savigny)Journal of the Marine Biological Association of the United Kingdom, 1959
- FURTHER STUDIES IN THE BEHAVIOR OF COMMENSAL POLYCHAETESThe Biological Bulletin, 1957
- LII.—Capitella capitata as a commensal, with a bibliography of parasitism and commensalism in the polychætesAnnals and Magazine of Natural History, 1956
- Specificity and Behavior in SymbiosesThe Quarterly Review of Biology, 1955
- Some experiments with the Common Hermit Crab (Eupaguras bernhardus) Linn., and transparent univalve shells.Journal of Zoology, 1951