On the Biology of the Caprellidae. Growth and moulting of Pseudoprotella phasma Montagu
- 1 August 1940
- journal article
- research article
- Published by Cambridge University Press (CUP) in Journal of the Marine Biological Association of the United Kingdom
- Vol. 24 (2), 483-493
- https://doi.org/10.1017/s0025315400045392
Abstract
The process of moulting in Pseudoprotella phasma is described. Sixteen instars have been found with a discontinuity in growth at the third stage. The instar lengths differ by a common ratio of 1·169 in the male and 1·148 in the female, the animals becoming differentiated at the twelfth stage. There are no secondary sexual characteristics except the brood pouch. The growing parts display simple positive allometry. The growth rates of the chelae and antennae alter after stage XII but remain the same in the third body segment. Changes in shape in the chelae, antennae and spinous armature are described.Keywords
This publication has 3 references indexed in Scilit:
- The Dimensions and Interrelationship of the Relative Growth ConstantsThe American Naturalist, 1939
- CHEMICAL HETEROGONY AND THE GROUNDPLAN OF ANIMAL GROWTH1Biological Reviews, 1934
- The Moulting and Growth-Stages of Gammarus, with Descriptions of the Normals and Intersexes of G. cheureuxiJournal of the Marine Biological Association of the United Kingdom, 1923