ovisacs


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ovisacs

small sacs in the ovarian tissue that contain the immature ovocytes that develop into ova; a graafian follicle.
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Approximately 40 adult female mealybugs with well-formed ovisacs were obtained from the stock colony to infest each of the different host plants under investigation.
Thirty eggs (collected within 12 h) were obtained from a single female ovisac arising from the different host plant species and transferred to the seedlings of their respective host plants using a camel hair brush.
Total numbers of ovisacs produced per female ranged between 3 to 4 at 65 [+ or -] 1% RH, however, this range was 2 to 4 at all temperatures and 75 [+ or -] 1% RH.
The fecundity/ female/generation was calculated by multiplying ovisac numbers with fecundity per ovisac.
Females were examined every 24 h during the oviposition period and eggs produced by individual females were removed and placed in 70% alcohol to dissolve away the ovisacs.
In Jun 2010, ovisacs and second generation crawlers were present on natural hemlock stands near MHCREC.