Skates are oviparous, depositing their eggs in
egg cases on the seafloor.
We also examined the live biomass of young by subtracting the mass of empty
egg case from its initial mass (i.e., when collected; Table 4).
The machine was used to construct 30-dozen
egg cases consisting of two 15-dozen compartments side by side.
The horse and pony fertilized, and we didn't have to purchase praying mantis
egg cases, as they were plentiful around the neighborhood.
When the glue is dry, use a calligraphy pen to write text around the edge of the
egg case in concentric rings.
Wedgwood's bowl appears most closely to resemble the
egg case of Argonautahians, which averages just 8 to 12 cm long, although a fair amount of artistic license is evident, including a considerable increase in size.
In oviparous chondrichthyes, the presence of fibrils or "hairs" in the
egg case is common, which secures its fixation to substrate.
ventricosus on black murex snails such as (1) substrate complexity of murex shells, (2) substrate complexity of murex
egg cases, (3) chemical cues from murex snail mucus, and (4) presence or absence of epibiota on black murex snails.
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.
Studies of the hatching process for subtidal and intertidal crabs suggest that embryos release enzymes that degrade the inner membrane of the
egg case (Forward, 1987; De Vries et al., 1991).