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Article: Persistent ancestral feeding structures in nonfeeding annelid larvae.
- Article from:
- The Biological Bulletin
- Article date:
- December 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 Marine Biological Laboratory. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Introduction
Larvae of some marine invertebrates require particulate food to complete development to the juvenile stage, but others cannot feed and instead rely on materials stored in the egg. These alternative nutritional modes are associated with differences in many other traits, including embryonic development (Wray and Bely, 1994), dispersal and population genetic structure (Palumbi, 1995), species duration (Jablonski, 1986), and perhaps most obviously, larval form. Feeding larvae bear structures that function in particle capture, ingestion, and assimilation, while nonfeeding larvae tend to lack such structures and are relatively simple in external form ...
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... ... neuronal capacity in these larvae. The feeding larvae of echinoderms typically have a well ... serotonergic nervous system in the feeding larvae of echinoderms parallels the development ... For echinoderms, development through feeding larvae is considered to be the ancestral life ...
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