The annual growth and reproductive cycle in four ascidians
- 1 June 1952
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of the Marine Biological Association of the United Kingdom
- Vol. 31 (1) , 41-61
- https://doi.org/10.1017/s0025315400003672
Abstract
This study was undertaken to increase our very incomplete knowledge of the annual cycle inascidians.Berrill (1950) states that ‘the age of ascidians, with one exception, is practically impossible to estimate, unless a certain inhabited area is followed closely through seasons and years’. In the present work the method has been to follow certain aspects of the ascidian population of a chosen area for a period of nearly two years. The area was the Old Dock in Ardrossan Harbour, Ayrshire, and the ascidian population contained four species: Diplosoma listerianum (Milne Edwards), Ciona intestinalis (Linnacus), Ascidiella aspersa (Müller) and Botryllus schlosseri (Pallas). Diplosoma belongs to the order Enterogona, suborder Aplousobranchiata; Ciona and Ascidiella to the order Enterogona, suborder Phlebobranchiata; and Botryllus to the order Pleurogona, suborder Stolidobranchiata. Thus each of the three main suborders is represented, and the four ascidians studied are amongst the commonest British species.This publication has 3 references indexed in Scilit:
- SIZE AND MORPHOGENESIS IN THE BUD OF BOTRYLLUSThe Biological Bulletin, 1941
- Sea-Temperature, Breeding and Distribution in Marine AnimalsJournal of the Marine Biological Association of the United Kingdom, 1920
- Preliminary Account of a Contribution to an Evaluation of the SeaJournal of the Marine Biological Association of the United Kingdom, 1914