Work

‘Pasteurised’ Tilapia: Drastic Mortality of Gyrodactylus cichlidarum During the Spring 2024 Heat Wave

Year: 2024

Type: article

Abstract: During spring 2024, a heat wave induced sustained water temperatures of 34°C during a week in Veracruz, Mexico. Serendipitously, we monitored Gyrodactylus cichlidarum infecting farmed tilapia fry during this pulse warming event and recorded a drastic decline of parasite populations over the following days. We subsequently established that parasites incubated in vitro at ca. 27°C survived up to 24 h, while at ca. 30°C and 34°C, all worms died within 4-7 h. Abnormal haptor structures were observed in parasites that developed and were born at a water temperature of 34°C. Under farming conditions, no unusual fish mortality was recorded, suggesting that pulse heat treatment may be an effective method to control G. cichlidarum, a recognised tilapia pathogen.

Source: Journal of Fish Diseases

DOI: 10.1111/jfd.14068

Authors: Julio Cesar Miranda‐Aguirre, Adriana García‐Vásquez, Martha Salazar‐Ulloa, Germán Muñoz‐Córdova, Miguel Rubio‐Godoy

Institutions: Instituto de Ecología, Universidad Nacional Autónoma de México

Language: English

Topic: Parasite Biology and Host Interactions

Subfield: Ecology

Field: Environmental Science

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: hybrid

Estimated APC paid: $5,190