Khv strikes lin­colnshire

Practical Fishkeeping (UK) - - News -

Dis­eased and dy­ing fish in two Lin­colnshire lakes have been con­firmed as suf­fer­ing from Koi her­pesvirus, more com­monly know as KHV. The first out­break was con­firmed by the Fish Health In­spec­torate (FHI) at K’s Lakes near Skeg­ness, with a sec­ond one at Lock­lands Lake a week later. As a re­sult, all fish­ing ac­tiv­ity has been can­celled for the time be­ing. The virus af­fects all va­ri­eties of the Com­mon carp,

Cypri­nus car­pio, both wild and or­na­men­tal. Symp­toms in­clude gill le­sions, with white or brown necrotic patches be­ing typ­i­cal, sunken eyes, rough patches on the skin and ex­ces­sive mu­cus. In­fected fish of­ten be­come lethar­gic, have trou­ble swim­ming and re­main near the sur­face longer than usual. In some pop­u­la­tions death rates can be as high as 80% and fish that do re­cover and sur­vive re­main in­fec­tious for the rest of their lives. High wa­ter tem­per­a­tures can trig­ger out­breaks with the dis­ease most preva­lent at 16-28°C.

While there is no risk to hu­man health, the dis­ease is no­ti­fi­able to the FHI and there are strict con­trols on the move­ment of fish from af­fected ponds and the cor­rect dis­in­fec­tion of equip­ment.

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