egg sac


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egg sac

[′eg ‚sak]
(zoology)
The structure containing the eggs of certain microcrustaceans.
References in periodicals archive ?
With regard to female fitness, 42 of the 56 females that copulated produced one egg sac; no female produced two or more egg sacs.
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.
In box 2, containing the other egg sac and where dispersal was not possible, silk was observed during the first 24 days of the spiderlings' life.
Some fishermen like to paint the lead on their lures with a bright orange or red powdercoat paint to mimic the egg sac of a sandflea.
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.
SHOPPER Judith Smith picked up a grape she'd bought at Asda...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.
Initially, the hatchlings, or fry, acquire nutrition from the egg sac. During this time, they are termed sac fry.