Development of <i>thysanopoda egregia (euphausiacea) </i>furciliae and early juvenile

TitleDevelopment of thysanopoda egregia (euphausiacea) furciliae and early juvenile
Publication TypeJournal Article
Year of Publication2013
AuthorsBrinton E., Townsend A.W, Knight M.D, Ohman MD
JournalJournal of Crustacean Biology
Volume33
Pagination244-252
Date Published2013/03
Type of ArticleArticle
ISBN Number0278-0372
Accession NumberWOS:000320681200009
Keywordsbiogeography; deep sea; euphausiids; larval development
Abstract

Nine furcilia and the early juvenile phase of the deep-sea euphausiid Thysanopoda egregia Hansen, 1905 are described and illustrated for the first time. This identification of the bathypelagic species is made on the basis of the very large, well-developed and dark-brown eyes, short sixth pleomere, large body size relative to stage of development, ripple-like sculpturing of the posterior and lateral parts of the carapace, and the number of terminal telson spines in the first five stages, F1-F5. The ripple marks on the carapace are a particularly distinctive characteristic of T. egregia. Because of the rarity of the nauplius, metanauplius, and calyptopis phases for this species and the unknown identification of the other three deep-living species of Thysanopoda, we are not yet able to positively identify these phases with confidence and that information is not presented here. A distribution map of records of furciliae of T. egregia from our samples and published sources corresponds with the previously described distribution of the adults, showing a cosmopolitan distribution in waters mainly equator-ward of the subpolar ocean provinces.

DOI10.1163/1937240x-00002139
Short TitleJ. Crustac. Biol.
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Student Publication: 
No