Translator Disclaimer
1 February 2011 Plankton-Caught Zoeal Stages and Megalopa of the Lobster Shrimp Axius serratus (Decapoda: Axiidae) from the Bay of Fundy, Canada, With A Summary of Axiidean and Gebiidean Literature on Larval Descriptions
Gerhard Pohle, William Santana, Gunther Jansen, Michelle Greenlaw
Author Affiliations +
Abstract

Wild-caught larvae, attributed to the lobster shrimp Axius serratus, consisting of two zoeal stages and a decapodid (megalopa), are described in detail. Parentage of larvae was ascertained based on geographic distribution of axiideans and gebiideans ( =  former thalassinideans) within the study area and close morphological resemblance to other congeneric larval stages. Larvae of A. serratus represent the first described ‘thalassinidean’ larvae from Canadian Atlantic waters and the first for Axiidae within the northwest Atlantic. Among axiidean larvae, those of A. serratus most closely resemble larvae of A. stirhynchus from the eastern Atlantic. Distinct features include the spination of the pleon that set A. serratus zoeae apart from those of most other ‘thalassinideans’ but that, in combination with a telson very similar to Homarus americanus, contributes to the general resemblance of A. serratus larvae to those of the American lobster. The primary distinction between these taxa is the presence of a chela on the third pereiopod in the latter that is not present in the former. In view of these appendages being prone to loss or damage, other characters that separate these taxa are listed and discussed. Given the uncertain status of some taxa within Axiidae and limited detailed information of larvae with certain parentage, difficulties in delineating the family based on larvae persist, as they do for cladistic analyses using adult morphology and molecular approaches.

Gerhard Pohle, William Santana, Gunther Jansen, and Michelle Greenlaw "Plankton-Caught Zoeal Stages and Megalopa of the Lobster Shrimp Axius serratus (Decapoda: Axiidae) from the Bay of Fundy, Canada, With A Summary of Axiidean and Gebiidean Literature on Larval Descriptions," Journal of Crustacean Biology 31(1), 82-99, (1 February 2011). https://doi.org/10.1651/10-3321.1
Received: 5 April 2010; Accepted: 1 July 2010; Published: 1 February 2011
JOURNAL ARTICLE
18 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

Share
SHARE
KEYWORDS
Axioidea
Axius serratus
Homarus americanus
larval development
plankton
systematics
thalassinideans
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top