Pecbloodin18-37, a novel peptide from mudskipper, showed potent activity against the aquaculture pathogen Edwardsiella tarda, including drug-resistant strains.
In vivo protectionPecbloodin18-37 protects fish against E. tarda infection including drug-resistant strains
What the researchers found
Pecbloodin18-37 from mudskipper showed potent antimicrobial activity against E. tarda including MDR strains, with in vivo protective efficacy.
Why it matters
Aquaculture antibiotic resistance threatens global food security. Fish-derived antimicrobial peptides offer species-relevant alternatives to conventional antibiotics.
How the study worked
Gene identification from mudskipper transcriptome, peptide synthesis and antimicrobial testing, and in vivo infection protection studies.
What this study cannot tell us
Aquaculture-focused — applicability to human medicine not established; production scalability for aquaculture use untested.
How to read the evidence
Preclinical aquaculture study with in vivo efficacy — promising for practical application in fish farming.
When this study was published
Published 2026 in Applied and Environmental Microbiology.
The bigger picture
Mining fish immune systems for antimicrobial peptides is a promising strategy for sustainable aquaculture, replacing antibiotics with species-appropriate immune molecules.
Questions still open
- Can Pecbloodin18-37 be produced at scale for aquaculture use?
- Does the peptide show activity against other fish pathogens beyond E. tarda?
Common questions
Why do we need new antibiotics for fish farming?
What is a mudskipper?
Read the original research
Pecbloodin18-37: a promising antimicrobial peptide from Boleophthalmus pectinirostris with therapeutic potential against Edwardsiella tarda infection.
Applied and environmental microbiology, e0204325
Citation
Bai, Yuqi; Zheng, Wenbin; Zhang, Weibin; Zhan, Jingyuan; Chen, Fangyi; Wang, Ke-Jian. (2026). Pecbloodin18-37: a promising antimicrobial peptide from Boleophthalmus pectinirostris with therapeutic potential against Edwardsiella tarda infection.. Applied and environmental microbiology, e0204325. https://doi.org/10.1128/aem.02043-25