Aquatic and Terrestrial Locomotion of the Rock Prickleback, Xiphister mucosus (Cottiformes: Zoarcoidei: Stichaeidae)

Several taxa of marine fishes are capable of both aquatic and terrestrial locomotion, yet the terrestrial locomotion mechanics of many of these taxa have not been studied. Many species of the prickleback family Stichaeidae, including the Rock Prickleback, Xiphister mucosus, are capable of both aquat...

Full description

Saved in:
Bibliographic Details
Published in:Northwestern naturalist (Olympia, Wash.) Wash.), 2012-12, Vol.93 (3), p.203-210
Main Author: Clardy, Todd R.
Format: Article
Language:English
Subjects:
anguilliform
Animal behavior
Animal locomotion
Aquatic ecology
Aquatic habitats
Cottiformes
Eels
Fish
Fracture mechanics
Friday Harbor Labs
Froude efficiency
Habitats
Identification and classification
Land
Locomotion
Marine fishes
Propulsion
Rock Prickleback
Stichaeidae
Swimming
swimming mechanics
Velocity
Xiphister
Zoarcoidei
Zoology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Several taxa of marine fishes are capable of both aquatic and terrestrial locomotion, yet the terrestrial locomotion mechanics of many of these taxa have not been studied. Many species of the prickleback family Stichaeidae, including the Rock Prickleback, Xiphister mucosus, are capable of both aquatic and terrestrial locomotion. In this study, high-speed video was used to compare the mechanics of aquatic and terrestrial locomotion of X. mucosus. While swimming, tail-beats occur faster, and the velocities of the head and tail are greater than on land. On land, tail-beats are slower and cover a longer distance, yet the distance traveled by the head is similar to the distance traveled during aquatic locomotion. Froude propulsion efficiencies during swimming average 0.75 (s  =  0.05) indicating efficient swimming mechanics in X. mucosus. These efficiency values are typical for other anguilliform swimmers that make terrestrial excursions. Overall, X. mucosus makes slight modifications to its efficient swimming locomotion mechanics, principally by increasing movement of the tail, to move effectively over the terrestrial environment.
ISSN:1051-1733
1938-5315
DOI:10.1898/11-19.1