Feeding {BSagri}R Documentation

Pupation and Hatching rate in a feeding experiment with four varieties

Description

Larvae of a non-target organism were fed with plant material derived from a novel variety(Novum), material from three standard varieties (NStandard: the standard variety most similar to Novum, and two additional standard varieties S1 and S2). Objective was to assess the impact of Novum on the pupation and hatching rate of an animal that potentially feeds on plant material compared to accepted standard varieties.

Usage

data(Feeding)

Format

A data frame with 32 observations on the following 5 variables.

Rep
a factor with 32 levels indexing the 32 replications
Variety
a factor with 4 levels: S1 and S2 are two standard varieties, Novum is a novel variety, and NStandard is the standard variety most similar to Novum
Total
the total number of animals in each experimental unit
Pupating
number of individuals pupating in each unit, the others died
Hatching
number of individuals hatching from the pupae

Source

...

Examples

data(Feeding)

# Larval mortality:

Feeding$Lmort <- Feeding$Total - Feeding$Pupating

# Pupae mortality

Feeding$Pmort <- Feeding$Pupating - Feeding$Hatching

# Total mortality

Feeding$Tmort <- Feeding$Total - Feeding$Hatching

fit1<-glm(cbind(Pupating,Lmort)~Variety,data=Feeding, family=quasibinomial)
anova(fit1, test="F")

fit2<-glm(cbind(Hatching,Pmort)~Variety,data=Feeding, family=quasibinomial)
anova(fit2, test="F")

fit3<-glm(cbind(Total,Tmort)~Variety,data=Feeding, family=quasibinomial)
anova(fit3, test="F")


[Package BSagri version 0.1-5 Index]