Journal article
Chronic kisspeptin administration stimulated gonadal development in prepubertal male yellowtail kingfish (Seriola lalandi; Perciformes) during the breeding and non-breeding season
General and Comparative Endocrinology, Vol.191, pp.168-176
2013
Abstract
The kisspeptin system is now accepted as a key regulator of vertebrate reproductive function, particularly the onset of puberty. In teleosts, the stimulatory effect of exogenous kisspeptins has been demonstrated mainly at the hypothalamic and pituitary levels of the reproductive axis, with very limited information pertaining to gonadal response. We determined the effect of chronic peripheral administration of the conserved kisspeptin decapeptides (YNLNSFGLRY or Kiss1-10; and FNFNPFGLRF or Kiss2-10) on gonadal development of pre-pubertal yellowtail kingfish (Seriola lalandi), a Perciform teleost, during the breeding and non-breeding season. We utilized slow-release implants to chronically deliver the synthesized peptides, which were based on the yellowtail kingfish kiss1 and kiss2 cDNA sequences that we isolated. The expression level of kiss2r and gnrh1 in the brain or hypothalamus did not vary between treated and control groups. Pituitary expression of fshβ and lhβ was upregulated only with Kiss1-10 treatment regardless of the season. Based on histological evidence, gonadal development was stimulated in male fish with either Kiss1-10 or Kiss2-10, with Kiss2-10 being more effective during the non-breeding period. Overall, our results suggest that kisspeptins modulate the early gonadal development of male yellowtail kingfish, however that may vary with the breeding season.
Details
- Title
- Chronic kisspeptin administration stimulated gonadal development in prepubertal male yellowtail kingfish (Seriola lalandi; Perciformes) during the breeding and non-breeding season
- Authors
- Josephine N Nocillado (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringY Zohar (Author) - University of Maryland, United StatesJ Biran (Author) - Hebrew University of Jerusalem, IsraelB Levavi-Sivan (Author) - Hebrew University of Jerusalem, IsraelAbigail Elizur (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- General and Comparative Endocrinology, Vol.191, pp.168-176
- Publisher
- Academic Press
- Date published
- 2013
- DOI
- 10.1016/j.ygcen.2013.06.005
- ISSN
- 0016-6480
- Copyright note
- Copyright © 2013 Elsevier Inc. All rights reserved.
- Organisation Unit
- University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99448750902621
- Output Type
- Journal article
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- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Endocrinology & Metabolism
- Zoology
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