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Marine Biology

, Volume 53, Issue 2, pp 125–129 | Cite as

Larval settlement in the echiuran worm Bonellia viridis: Settlement on both the adult proboscis and body trunk

  • L. Agius
Article

Abstract

It is widely documented that in Bonellia viridis Rolando (Echiura), the larvae settle on the proboscis of the adult female and differentiate into males. This study shows that although settlement on the proboscis is preferred, the larvae can also settle on the body trunk of the adult and differentiate into males. Aqueous extracts of homogenized trunk tissues are as effective as those of proboscis tissues in masculinizing the larvae. The natural secretion of the female body trunk, which is produced when the worm is disturbed, has potent masculinizing properties. The preferential settlement on the probiscis may not result from a different chemical nature of the substratum.

Keywords

Adult Female Aqueous Extract Chemical Nature Female Body Larval Settlement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1979

Authors and Affiliations

  • L. Agius
    • 1
    • 2
  1. 1.Fort St. Lucian Marine StationThe University of MaltaMsidaMalta
  2. 2.Somerville CollegeOxfordEngland

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