PUBLICATION
Evolution of posterior lateral line development in fish and amphibians
- Authors
- Pichon, F., and Ghysen, A.
- ID
- ZDB-PUB-040427-7
- Date
- 2004
- Source
- Evolution & development 6(3): 187-193 (Journal)
- Registered Authors
- Ghysen, Alain
- Keywords
- none
- MeSH Terms
-
- Tail/embryology
- Cell Movement
- Biological Evolution*
- Fishes/embryology*
- Sense Organs/embryology*
- Species Specificity
- Head/embryology
- Amphibians/embryology*
- Body Patterning*
- Animals
- PubMed
- 15099306 Full text @ Evol. Dev.
Citation
Pichon, F., and Ghysen, A. (2004) Evolution of posterior lateral line development in fish and amphibians. Evolution & development. 6(3):187-193.
Abstract
Summary The lateral line is a sensory system present in fish and amphibians. It is composed of discrete sense organs, the neuromasts, arranged on the head and body in species-specific patterns. The neuromasts are deposited by migrating primordia that originate from pre- and postotic placodes and follow defined pathways on the head and body. Here we examine the formation of the posterior lateral line (PLL), which extends rostrocaudally on the trunk and tail. In amphibians, the PLL neuromasts are deposited as a single wave from the head to the tip of the tail. In the zebrafish, however, the first wave of neuromast deposition forms but a rudimentary PLL, and several additional waves are needed to form the adult pattern. We show that the amphibian mode is also present in the sturgeon and therefore probably represents the primitive mode, whereas the zebrafish mode is highly conserved in several teleost species. A third mode is found in a subgroup of teleosts, the protacanthopterygians, and may represent a synapomorphy of this group. Altogether, the mode of formation of the embryonic PLL appears to have undergone remarkably few changes during the long history of anamniote evolution, even though large differences can be observed in the lateral line morphology of adult fishes.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping