The 10 variables of the data frame bsetal97$biol are called in bsetal97$biol.blo.names
and the number of modalities per variable given in bsetal97$biol.blo. The variables are:
female size - the body length from the front of the head to the end of the abdomen (7 length modalities),
egg length - the egg size (6 modalities), egg number - count of eggs actually oviposited,
generations per year (3 modalities: $\leq 1$, 2, > 2),
oviposition period - the length of time during which oviposition occurred (3 modalities: $\leq 2$ months,
between 2 and 5 months, > 5 months), incubation time - the time between oviposition and hatching of the larvae
(3 modalities: $\leq 4$ weeks, between 4 and 12 weeks, > 12 weeks), egg shape (1-spherical, 2-oval, 3-cylindrical),
egg attachment - physiological feature of the egg and of the female (4 modalities), clutch structure (1-single eggs, 2-grouped eggs,
3-egg masses), clutch number (3 modalities : 1, 2, > 2).
The 7 variables of the data frame bsetal97$ecol are called in bsetal97$ecol.blo.names
and the number of modalities per variable given in bsetal97$ecol.blo. The variables are:
oviposition site - position relative to the water (7 modalities), substratum type for eggs - the substratum to which
the eggs are definitely attached (6 modalities), egg deposition - the position of the eggs during the oviposition process (4 modalities),
gross habitat - the general habitat use of the species such as temporary waters or estuaries (8 modalities), saturation variance -
the exposure of eggs to the risk of dessication (2 modalities), time of day (1-morning, 2-day, 3-evening, 4-night),
season - time of the year (1-Spring, 2-Summer, 3-Automn).