Premium
Effects of perinatal visual stimulation on preference, growth, and mortality in African clawed frogs ( Xenopus Laevis )
Author(s) -
Mann Katherine M.,
Sleigh Merry J.
Publication year - 2003
Publication title -
developmental psychobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 93
eISSN - 1098-2302
pISSN - 0012-1630
DOI - 10.1002/dev.10119
Subject(s) - xenopus , stimulation , african clawed frog , biology , preference , propranolol , neuroscience , zoology , endocrinology , biochemistry , gene , economics , microeconomics
Two exploratory experiments examined the effects of flashing light stimulation on growth, mortality, and behavioral preferences of Xenopus laevis tadpoles. Experiment 1 showed that tadpoles exposed to continuous visual stimulation, from egg‐laying through postnatal day 40, had significantly higher mortality rates and weighed significantly less than controls. In contrast to controls, experimental tadpoles showed a preference for visual stimulation throughout early development. Results support the notion that augmented visual stimulation during early development affects species‐typical development and the creation of postnatal preferences. Experiment 2 exposed subjects to propranolol in their water to investigate a potential sympathetic nervous system (SNS) mechanism responsible for the previous results. Tadpoles exposed to propranolol and visual stimulation simultaneously did not show a preference for the visual stimulation. Although this preliminary finding suggests SNS involvement, this notion deserves further investigation. © 2003 Wiley Periodicals, Inc. Dev Psychobiol 43: 28–36, 2003.