Evidence map›Paper›PMID 42455188›Full record

ArticleFish physiology and biochemistry2026

Effects of photoperiod on gonadal development and neuropeptide Y and NPY1 receptor in Nile tilapia (Oreochromis niloticus).

Yujie Cao, Jun Xiao, Pengfei Gao, Yufang Chen, Zhanyang Tang, Liping Li, Zhongbao Guo, Ming Li, Zhuanling Lu, Ting Huang

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Article in Fish physiology and biochemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Yujie Cao *Guangxi Academy of Fishery Sciences, Nanning, 530021, China.
Jun Xiao *Guangxi Academy of Fishery Sciences, Nanning, 530021, China.
Pengfei GaoGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Yufang ChenGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Zhanyang TangGuangxi Academy of Fishery Sciences, Nanning, 530021, China. tangzhanyang123@163.com.
Liping LiGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Zhongbao GuoGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Ming LiGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Zhuanling LuGuangxi Academy of Fishery Sciences, Nanning, 530021, China.
Ting HuangGuangxi Academy of Fishery Sciences, Nanning, 530021, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuropeptide Y (npy) plays important roles in regulating neuroendocrine secretion. In this study, we determined the effect of photoperiod on Npy and the Npy1 receptor in Nile tilapia. The experiment was designed with four photoperiod conditions (10L:14D, 12L:12D, 14L:10D, and 16L:8D) with equal feeding across groups. The concentration of serum Npy, gonadotropin-releasing hormone (Gnrh), sex steroid (E2 in females; T in males), and npy, npy1r genes expression in the brain and gonadal tissues was analyzed. Gonadal histological analysis revealed that oocyte development and spermatogenesis were promoted. The results indicated that as the photoperiod increased, the serum levels of Npy, Gnrh, E2, and T, along with the gene expression levels of npy and npy1r in the brain and gonad tissues increased, reaching their highest levels in the condition involving 16L:8D. The expression of the npy gene is higher in the brain and gonad tissue of males than in those of females, whereas the expression of the npy1r gene is higher in females than in males. Extended photoperiods significantly improved growth performance, as indicated by an increase in the specific growth rate (SGR) and a decrease in the feed conversion ratio (FCR) under 16L:8D. This study serves as a reference for implementing photoperiod strategies in tilapia farming.

Indexed as

CichlidsGonadsNeuropeptide YPhotoperiodReceptors, Neuropeptide YAnimalsBrainFemaleGonadotropin-Releasing HormoneMaleTestosteroneGonadotropin-Releasing HormoneNeuropeptide Yneuropeptide Y-Y1 receptorReceptors, Neuropeptide YTestosteroneGonadal developmentNeuropeptide YNeuropeptide Y1 receptorNile tilapiaPhotoperiod

Identifiers

PMID42455188

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.