Effect of Capsicum annuum on antioxidant activity, oocyte development and resistance against Aeromonas hydrophila in jewel cichlid (Hemichromis guttatus)

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YİĞİT N. Ö., METİN S., DİDİNEN B. I., Ozmen O., ASLANKOÇ R.

Scientific Reports, vol.15, no.1, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 1
  • Publication Date: 2025
  • Doi Number: 10.1038/s41598-025-13481-7
  • Journal Name: Scientific Reports
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, MEDLINE, Directory of Open Access Journals
  • Keywords: Antioxidant, Jewel cichlid, Mature oocyte, Protection, Red pepper
  • Open Archive Collection: AVESIS Open Access Collection
  • Isparta University of Applied Sciences Affiliated: Yes

Abstract

This study aimed to determine the effects of 3%, 7%, 11%, and 15% red pepper (Capsicum annuum) supplementation to diet on antioxidant, oocyte development and disease resistance against Aeromonas hydrophila A210 of jewel cichlid (Hemichromis guttatus). Fifteen fish (3.43 g ± 0.03) were stocked to each aquarium and fed ad libitum for 90 days. At the end of the trial, the number of mature oocytes increased by adding 11% and 15% red pepper to the diets. (P < 0.05). Fish fed diets containing 11% and 15% red pepper showed a significant rise in superoxide dismutase (SOD) activity (P < 0.05). In addition, fish fed diets containing 3% and 11% red pepper showed disease resistance against A. hydrophila in jewel cichlids. After challenge with A. hydrophila, cumulative mortality rates in fish fed with diets containing 3%, 7%, and 11% red pepper were significantly reduced compared to the control group (P < 0.05). Therefore, using 11% red pepper is appropriate to provide resistance against A. hydrophila infections, increase fertility and antioxidant levels in jewel cichlids (Hemichromis guttatus).