Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30618
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Investigating the kisspeptin system in the hermaphrodite teleost gilthead seabream (Sparus aurata)
Author(s): Oliveira, Catarina C V
McStay, Elsbeth
Cabrita, Elsa
Castanheira, Maria Filipa
Migaud, Hervé
Dinis, Maria Teresa
Davie, Andrew
Contact Email: andrew.davie@stir.ac.uk
Keywords: Sex change
kissr4
kiss2
Protandric hermaphroditis
montogeny
Issue Date: Mar-2020
Citation: Oliveira CCV, McStay E, Cabrita E, Castanheira MF, Migaud H, Dinis MT & Davie A (2020) Investigating the kisspeptin system in the hermaphrodite teleost gilthead seabream (Sparus aurata). Comparative Biochemistry and Physiology Part A: Molecular and Integrative Physiology, 241, Art. No.: 110624. https://doi.org/10.1016/j.cbpa.2019.110624
Abstract: The kisspeptin system, a known regulator of reproduction in fish, was investigated during two key phases within the gilthead seabream (Sparus aurata) life cycle: protandrous sex change and larval ontogeny. Seabream specific partial cDNA sequences were identified for two key targets, kissr4 and kiss2, which were subsequently cloned and qPCR assays developed. Thereafter, to examine association in expression with sex change, a group of adult seabream (2+ years old) undergoing sex change were sampled for gene expression at two different periods of the annual cycle. To study the kisspeptin system ontogeny during early life stages, transcript levels were monitored in larvae (till 30 days-post-hatch, DPH) and post-larvae (from 30 till 140 DPH). During sex change, higher expression of kissr4 and kiss2 was observed in males when compared to females or individual undergoing sex change, this is suggestive of differential actions of the kisspeptin system during protandrous sex change. Equally, variable expression of the kisspeptin system during early ontogenic development was observed. The higher expression of kissr4 and kiss2 observed from 5 DPH, with elevations at 5–20 and 90 DPH for kissr4 and at 5, 10, 20, and 60 DPH for kiss2, is coincident with the early ontogeny of gnrh genes previously reported for seabream, and possibly related with early development of the reproductive axis in this species.
DOI Link: 10.1016/j.cbpa.2019.110624
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: Oliveira CCV, McStay E, Cabrita E, Castanheira MF, Migaud H, Dinis MT & Davie A (2020) Investigating the kisspeptin system in the hermaphrodite teleost gilthead seabream (Sparus aurata). Comparative Biochemistry and Physiology Part A: Molecular and Integrative Physiology, 241, Art. No.: 110624 DOI: https://doi.org/10.1016/j.cbpa.2019.110624 © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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