Multiple fertilizations and extrusions in female Homarus americanus / S.L. Waddy and D.E. Aiken.: Fs70-8/80-42E-PDF

"It is well known that molting rate decreases with increasing size, so that very large lobsters may only molt once in several years. Since mating usually occurs immediately following molt, it has been assumed that the relatively greater fecundity of a large female is more than offset by the infrequency of spawning. We have now recorded thirteen multiple extrusions in the laboratory from females ranging in carapace length from 118 to 195 mm. From this, we can say that multiple extrusion (two or more spawnings without an intervening molt) is common in large females, occurring in 40-50% of stock held in our facilities, and multiple fertilization (two or more fertilized broods from a single mating) also occurs. These observations indicate that "jumbo" lobsters should not be dismissed as non-productive members of the population until their true reproductive value can be determined."--Abstract.

Permanent link to this Catalogue record:

Publication information
Department/Agency Canada. Department of Fisheries and Oceans.
Title Multiple fertilizations and extrusions in female Homarus americanus / S.L. Waddy and D.E. Aiken.
Series title CAFSAC research document ; 80/42
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Caption title.
Digitized edtion from print [produced by Department of Fisheries and Oceans].
"This paper not to be cited without prior reference to the authors."
Includes bibliographical references (page 4).
Includes abstract in French.
Publishing information St. Andrews, New Brunswick : Fisheries and Environmental Sciences, Department of Fisheries and Oceans, Biological Station, [1980].
Author / Contributor Waddy, S. L., author.
Aiken, D. E., author.
Description 1 online resource (4 pages).
Catalogue number
  • Fs70-8/80-42E-PDF
Subject terms Fisheries
Request alternate formats
To request an alternate format of a publication, complete the Government of Canada Publications email form. Use the form’s “question or comment” field to specify the requested publication.
Date modified: