s.oryzae: Data on Sitophilus orizae

In CINID: Curculionidae INstar IDentification

Description

s.oryzae is a list of three elements:

• $data: 97 measures (in micrometers) of the headcapsule width of rice weevil larvae (Sitophilus orizae) belonging to any of four possible instars.

• $mu4: the mean headcapsule width (in micrometers) estimated from 40 fourth-instar S. oryzae larvae. These 40 larvae doesn't belong to the data set s.oryzae$data as stated previously.

• $sd4: the standard deviation of headcapsule width (in micrometers) estimated from 40 fourth-instar S. oryzae larvae. These 40 larvae doesn't belong to the data set s.oryzae$data as stated previously.

Usage

data(s.oryzae)

Format

The format is a list of three elements:

• $data: a vector of 97 numerical values

• $mu4 : a single numerical value

• $sd4 : a single numerical value

References

Merville A., Vallier A., Venner S., Siberchicot A., Fouchet D., Heddi A. and Bel-Venner M.-C. (2014). Determining the instar of a weevil larva (Coleoptera:Curculionidae) using a parsimonious method. European Journal of Entomology. 111(4): 567-573. doi: 10.14411/eje.2014.056

Examples

data(s.oryzae)
hcw <- s.oryzae$data
length(hcw)   # 97
mu4.soryzae <- s.oryzae$mu4   # 589
sd4.soryzae <- s.oryzae$sd4   # 24.43

CINID documentation built on July 8, 2020, 5:16 p.m.