Snout dimorphism in white sturgeon, Acipenser transmontanus, from the Columbia River at Hanford, Washington

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Fish. Bull.; (United States)

OSTI ID:5896504

Crass, D W; Gray, R H

Although differences in snout length and shape between young and adult sturgeon are known, morphological divergence in snout type of similar sized individuals has not been reported. Field observations in the Hanford reach of the Columbia River on 99 white sturgeon ranging from 35 to 205 cm total length showed two snout types based on size and shape. The occurrence of this dimorphism at Hanford may reflect isolating mechanisms, such as physical barriers which block fish movements. (RAF)

• Research Organization: Battelle Pacific Northwest Lab., Richland, WA
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5896504
• Journal Information: Fish. Bull.; (United States), Vol. 80:1
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
COLUMBIA RIVER
FISHES
MORPHOLOGY
ADOLESCENTS
ADULTS
AGE DEPENDENCE
HEAD
SHAPE
AGE GROUPS
ANIMALS
AQUATIC ORGANISMS
BODY
BODY AREAS
RIVERS
STREAMS
SURFACE WATERS
VERTEBRATES
550800* - Morphology