egg case


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egg case

[′eg ‚kās]
(invertebrate zoology)
A protective capsule containing the eggs of certain insects and mollusks. Also known as egg capsule.
A silk pouch in which certain spiders carry their eggs. Also known as egg sac.
(vertebrate zoology)
A soft, gelatinous (amphibians) or strong, horny (skates) envelope containing the egg of certain vertebrates.
References in periodicals archive ?
Each egg case was weighed in the lab, placed in a quart mason jar with gauze-covered lid, kept at 20 C, and examined each day to test the hypothesis that south-facing egg cases hatch earlier, because of solar heating, than those oriented in other compass directions.
Only one egg capsule per oviduct has been documented for both species, and it is assumed that there is a single embryo per egg case as there are only rare exceptions to this (big skate Beringraja binoculata (Girard, 1855) and mottled skate Raja pukhra Liu, 1932 which have up to four embryos per egg case (Ebert & Winton 2010)).
The machine was used to construct 30-dozen egg cases consisting of two 15-dozen compartments side by side.
An egg case that was constructed on 1 November hatched 57 days later, on 28 December, so I expected the egg case constructed on 14 November to hatch on 11 January, but this didn't happen.
When the glue is dry, use a calligraphy pen to write text around the edge of the egg case in concentric rings.
The egg case from a praying mantis is straw-colored and looks like a piece of shredded wheat breakfast cereal about the size of a child's thumb.
Omega-3 claims are all over the egg case, from brands like Land O Lakes to Best, Gold Circle Farms, Full Spectrum Farms, Giving Nature, Safeway, and more.
ANSWERS: 1 Madrid; 2 Cones of extinct volcanos; 3 Hummus; 4 Copenhagen; 5 A docile horse with a steady gait favoured by ladies; 6 Newmarket; 7 The krona; 8 Raymond Chandler; 9 Beatrix Potter; 10 The empty egg case of a dogfish.
The egg appeared coppery brown in colour and a portion of gnathosoma, eye spots and legs of the larvae could be easily perceived through the egg case few hours prior to hatching (Manjunatha and Puttaswamy, 1989).
Another is to find a local source for fresh eggs, or even to get a few chickens of your own and declare your independence from the supermarket egg case.