03.01 Life Cycle

Many of the electron microscope (EM) studies of the amphioxus nervous system are of larvae that are only 12.5 days old, long before they have matured into their full complexity.   In contrast, most of the endocrine studies seem to be of adults.  This page is an attempt to provide a life-cycle context to these various studies. 

Note:  all the following references were found by searching the first four pages of Google for "amphioxus metamorphosis". 

BioOne Online Journals - Larval Development of the Oriental ...

by M Urata - 2007 - Cited by 2 - Related articles
Metamorphosis first occurred on 60 days post fertilization (dpf) and was ... Biology of the amphioxus, Branchiostoma belcheri, in the Ariake Sea, ...

Developmental Gene Expression in Amphioxus: New Insights into the ...

by LZ HOLLAND - 1998 - Cited by 33 - Related articles
Embryos and larvae can be raised in the laboratory through metamorphosis in about a month (Stokes and Holland, 1995). Amphioxus developmental genes have ...

Full text of "Amphioxus and the ancestry of the vertebrates"

 - Feb 19Metamorphosis and commenc- ing elongation of body proper. AMPHIOXUS. Gastrulation. Oval embryo with medullary tube, neurenteric canal, notochord, ...
www.archive.org/.../amphioxusancestr00will/amphioxusancestr00will_djvu.txt -

Stokes, M. D., and N. D. Holland. 1995. Embryos and larvae of
a lancelet, Branchiostomajloridue, from hatching to metamorphosis: growth in the laboratory and external morphology. Acta Zool. Stockh. 76: 105-120. 
(get this for age at metamorphosis) 

Ciliary Hovering in Larval Lancelets (=Amphioxus)

by MD Stokes - 1995 - Cited by 29 - Related articles
On the metamorphosis of amphioxus lan- ceolatus. Proc. Konin. Akad. Weten. Sci. Sect. 16: 574-583. 24. Garstang,. W. 1928. The morphology ...
www.biolbull.org/cgi/reprint/188/3/231.pdf -

Amphioxus postembryonic development reveals the homology of chordate metamorphosis.

Paris M, Escriva H, Schubert M, Brunet F, Brtko J, Ciesielski F, Roecklin D, Vivat-Hannah V, Jamin EL, Cravedi JP, Scanlan TS, Renaud JP, Holland ND, Laudet V.

Curr Biol. 2008 Jun 3;18(11):825-30.PMID: 18514519 [PubMed - indexed for MEDLINE] 

Chordate metamorphosis: ancient control by iodothyronines.

Denver RJ.

Curr Biol. 2008 Jul 8;18(13):R567-9.PMID: 18606129 [PubMed - indexed for MEDLINE]   

The history of a developmental stage: metamorphosis in chordates.

Paris M, Laudet V.

Genesis. 2008 Nov;46(11):657-72. Review.PMID: 18932261 [PubMed - indexed for MEDLINE] 

Amphioxus and the evolution of head segmentation -- Holland et al ...

by LZ Holland - 2008 - Cited by 3 - Related articles
Jun 21, 2008 ... At metamorphosis, an amphioxus larva has 9–11 gill slits, which are approximately in register with the somites. ...

On the Metamorphosis of Amphioxus lanceolatus

by JW van Wijhe - 1913 - Cited by 9 - Related articles
On the Metamorphosis of Amphioxus lanceolatus. Authors: van Wijhe, J. W.. Publication: Koninklijke Nederlandsche Akademie van Wetenschappen Proceedings, ...
adsabs.harvard.edu/abs/1913KNAB...16..574V -


Endogenous β-galactosidase activity in amphioxus: a useful ...

File Format: PDF/Adobe Acrobat - Quick View
by C Cañestro - 2001 - Cited by 2 - Related articles
amphioxus metamorphosis. Observations from this time onwards showed that the β-
gal pattern remained in the gut and expanded into the developing hepatic ...

PLoS ONE: Insights from Amphioxus into the Evolution of Vertebrate ...

by D Meulemans - 2007 - Cited by 19 - Related articles
Though it is possible that some cartilage network orthologs are re-deployed together after metamorphosis, we view this as unlikely since most amphioxus ...
www.plosone.org/.../info:doi%2F10.1371%2Fjournal.pone.0000787 -

Amphioxus - LoveToKnow 1911

Oct 6, 2006 ... The theoretical interest of Amphioxus depends upon a variety of ..... The adult form is achieved by metamorphosis, which cannot be further ...
www.1911encyclopedia.org/Amphioxus -


Holland, L. Z., Holland, N. D. A revised fate map for amphioxus and the evolution of axial ... development reveals the homology of chordate metamorphosis. ...

Report on a Collection of Amphioxus made by Professor A. C. Haddon ...

by A Willey - Related articles
Since, according to Boveri's observations, the development of the reproductive organs of Amphioxus takes place after the metamorphosis of the larva, ...
jcs.biologists.org/cgi/reprint/s2-35/139/361.pdf -