X. Zhang et Mj. Linit, COMPARISON OF OVIPOSITION AND LONGEVITY OF MONOCHAMUS-ALTERNATUS AND MONOCHAMUS-CAROLINENSIS (COLEOPTERA, CERAMBYCIDAE) UNDER LABORATORY CONDITIONS, Environmental entomology, 27(4), 1998, pp. 885-891
Female adults of 2 pine sawyer species, Monochamus alternatus Hope and
Monochamus carolinensis (Olivier),were reared individually as unmated
females or with a male as a mated female under laboratory conditions.
The numbers of oviposition sites and eggs per female were recorded fo
r the duration of the adult life stage. Patterns of oviposition, fecun
dity, and adult longevity were compared. M alternatus females lived si
gnificantly longer than M. carolinensis, while M. carolinensis females
deposited a greater number of eggs per day than M. alternatus females
. This intel action resulted in similar fecundities for the 2 species.
Unmated females lived significantly longer than mated females but dep
osited significantly fewer eggs per day, resulting in a significantly
higher fecundity for mated females. The distribution of eggs within ov
iposition sites was similar between species and mated conditions. The
majority of oviposition sites contained a single egg. The age-specific
oviposition rates (eggs/48 hr) were also similar between species and
mated status. Regressions of egg deposition and, adult age indicated.
that all females had a nearly constant rate of egg deposition througho
ut their adult lives.