e-journal

Treatment of Trichodina sp reduced load of Flavobacterium columnareand improved survival of hybrid tilapia

---

Bacterium Flavobacterium columnare and protozoan Trichodina spp are common pathogens of culturedfish. Studies of parasite–bacterium interaction show evidence that concurrent infections increase severityof some infectious diseases, especially bacterial diseases. The effect of parasite treatment on F. columnareinfection in tilapia is currently unknown. This study evaluated whether treatment of Trichodina sp par-asitized hybrid tilapia (Oreochromis niloticus × Oreochromis aureus) with formalin would improve fishsurvival and reduce F. columnare infection in fish after F. columnare exposure. Hybrid tilapia parasitizedby Trichodina sp were divided into 3 treatment groups. The first group of fish received no parasite treat-ment. The second group of fish were bath treated with 150 mg L−1formalin for 1 h. The third group of fishtreated twice with 150 mg L−1formalin bath for 1 h each at 2 day intervals. All fish were then exposed toF. columnare by immersion challenge. The tilapia not treated with formalin showed significantly highermortality (37.5%) than those treated with formalin (≤16.7%) after exposure to F. columnare. Fish treatedtwice showed lower mortality (6.37%) than those treated only once (16.7%). The non-treated fish showedsignificantly higher load of F. columnare in gill, kidney and liver compared to those treated with formalinfollowing exposure to F. columnare. The bacterial load of non-treated fish was 27075 genome equivalentsper mg of gill tissue (GEs/mg), 12 fold higher than those treated once with formalin (2250 GEs/mg) or39 fold higher than those treated twice with formalin (699 GEs/mg) after exposure to F. columnare. Thisstudy demonstrated that formalin treatment for Trichodina sp parasitism reduced bacterial infection assuggested by reduced loads of bacteria in fish tissues and subsequently decreased fish mortality.

Keywords:ParasiteqPCRBacterial loadInfectionColumnaris diseasea

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Aquaculture Reports

No. Panggil

-

Penerbit

: Elsevier., 2015

Deskripsi Fisik

Aquaculture Reports 2 (2015) 126–131

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

KIMIA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar