PUBLICATION
Molecular forms of GnRH in three model fishes: rockfish, medaka, and zebrafish
- Authors
- Powell, J.F., Krueckl, S.L., Collins, P.M., and Sherwood, N.M.
- ID
- ZDB-PUB-961014-889
- Date
- 1996
- Source
- The Journal of endocrinology 150(1): 17-23 (Journal)
- Registered Authors
- Krueckl, Sandra, Sherwood, Nancy M.
- Keywords
- none
- MeSH Terms
-
- Animals
- Chickens
- Chromatography, High Pressure Liquid
- Female
- Fishes/metabolism*
- Gonadotropin-Releasing Hormone/analogs & derivatives
- Gonadotropin-Releasing Hormone/analysis
- Gonadotropin-Releasing Hormone/chemistry*
- Male
- Models, Biological
- Oryzias
- Pituitary Gland/chemistry*
- Salmon
- Zebrafish
- PubMed
- 8708558 Full text @ J. Endocrinol.
Citation
Powell, J.F., Krueckl, S.L., Collins, P.M., and Sherwood, N.M. (1996) Molecular forms of GnRH in three model fishes: rockfish, medaka, and zebrafish. The Journal of endocrinology. 150(1):17-23.
Abstract
Three species of fish have become important in the study of reproduction and development. Rockfish are a model for developmental studies of live-bearing perch-like fish, whereas medaka and zebrafish are models for developmental and genetic studies. The forms of GnRH are identified in the brains of each of these fish and in the pituitary of the rockfish to investigate the role of GnRH in reproduction. Here, we report that grass rockfish (Sebastes rastrelliger) have three forms of GnRH in brain extracts as determined by HPLC elution position and RIA. These forms are identified as sea bream GnRH, chicken GnRH-II and salmon GnRH. In contrast, only two forms of GnRH were detected in brain extracts of medaka (Oryzias latipes) and zebrafish (Brachydanio rerio): salmon GnRH and chicken GnRH-II. Rockfish is distinct from medaka and zebrafish in that the most abundant form of GnRH in the rockfish pituitary is sea bream GnRH, whereas this form is absent in the other two fishes. The identification of sea bream GnRH in the rockfish brain and pituitary extracts indicates that the phylogenetic emergence of sea bream GnRH is earlier than the order Perciformes.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping