FGF- and SHH-based molecular signals regulate barbel and craniofacial development in catfish.

ABSTRACT:

Background

Catfish (Siluriformes) are characterized by unique morphologies, including enlarged jaws with movable barbels and taste buds covering the entire body surface. Evolution of these characteristics was a crucial step in their adaptive radiation to freshwater environments. However, the developmental processes of the catfish craniofacial region and taste buds remain to be elucidated; moreover, little is known about the molecular mechanisms underlying the morphogenesis of these structures.

Results

In Amur catfish (Silurus asotus), three pairs of barbel primordia are formed by 2 days post-fertilization (dpf). Innervation of the peripheral nerves and formation of muscle precursors are also established during early development. Taste buds from the oral region to the

SUBMITTER: Itoyama T 

PROVIDER: S-EPMC6570838 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature