egg sac


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egg sac

[′eg ‚sak]
(zoology)
The structure containing the eggs of certain microcrustaceans.
References in periodicals archive ?
In this study, brown widow egg production was fairly steady for a 5-month period bracketing the summer with a significant monthly difference of brown widow egg sac clutch size between June and September (Fig.
The globular or pear-shaped egg sacs, which measure 10 - 15 mm in diameter, are white to greyish yellow with a smooth silky surface.
Interestingly, offspring number (as well as female condition and egg sac mass) was marginally, positively correlated with egg mass amongst desert females ([r.
vagans provided maternal care by turning the egg sac so the eggs on the bottom were at the top for a while, preventing adherence between the eggs (Baxter 1993).
These spiderlings have just hatched from a spherical silken egg sac, which the female dragged around behind her, attached to her spinnerets (wolf spiders do not make a permanent web).
Other floral motifs appear latent and gestative--the tapered petals of an oblong lotus bud are tightly bound like a capsule, simultaneously connoting the gleaming metallic hardness of a yogic murti and the discrete larval enclosure of a membranous egg sac or chrysalis.
Plants were infested by transferring adult female mealybugs with attached egg sac to the apical bud of terminals with a micro-pin tool.
and put her finger through a poisonous spider's egg sac.
Despite laying thousands of eggs, black widow spiderlings - typically about five weeks after egg sac production - are highly cannibalistic, feeding on their siblings, resulting in few reaching adulthood.
This can be removed using a pin, but if the egg sac is ruptured, it can lead to re-infection from chigger fleas or bacteria.
In channel catfish, spawning through the egg sac nutrition period spans 10 to 20 days.