mackerel {isdals}

Nematodes in mackerel

Description

Data to examine if cooling right after catching prevents nematodes (roundworms) from moving from the belly of mackerel to the fillet. A total of 150 mackerels were investigated and their length, number of nematodes in the belly, and time before counting the nematodes in the fillet were registered. The response variable is binary: presence or absence of nematodes in the fillet.

Usage

data(mackerel)

Format

A data frame with 150 observations on the following 7 variables.

length

a numeric vector

visc

a numeric vector

left

a numeric vector

right

a numeric vector

filet

a numeric vector

portion

a numeric vector

time

a numeric vector

Source

A. Roepstorff and H. Karl and B. Bloemsma and H. H. Huss (1993). Catch handling and the possible migration of Anisakis larvae in herring, Clupea harengus. Journal of Food Protection. 56:783-787.

Examples

data(mackerel)
## maybe str(mackerel) ; plot(mackerel) ...