hatching


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Related to hatching: assisted hatching

hatching

[′hach·iŋ]
(graphic arts)
Parallel lines drawn on sections of plans for buildings or machines to distinguish between different materials.
References in periodicals archive ?
Hatching interval may vary depending on other factors, such as clutch size, clutch initiation date, predation risk, ambient temperature, and food availability (Beason and Franks 1974; Bollinger et al.
In addition to the egg baskets, water baths were outfitted with 1-L mesh-bottomed containers to hold newly hatched larvae for observation beyond the hatching period.
When hatching was imminent (presence of large dark eye-spots), leaves containing egg masses were excised and placed inside 100-mm diameter Petri dishes on top of moist tissue paper.
Annette Choi said the hatching process was exceptionally interesting and ``not as boring as it is in textbooks.
If a wasp attacks an egg a day or two before normal hatching, only that embryo and perhaps near neighbors usually try a quick escape, Warkentin reports in the October ANIMAL BEHAVIOR.
Assisted hatching is used to help the embryo hatch from its protective outer shell, the zona pellucida, and promote implantation in the uterine wall after embryo transfer.
The rectrices and remiges of nestling bluebirds begin to emerge within 11 days after hatching and exhibit UV-blue ornamental coloration.
All three species of tadpoles also incurred significant sublethal toxicity--even in the lowest exposure groups, except for toads exposed immediately after hatching.
NASDAQ: CRII), a developer, manufacturer and marketer of medical and scientific laser devices, and privately held Hamilton Thorne Research (HTR), a developer, manufacturer and marketer of automated sperm analyzers, announced today that HTR has purchased the In-Vitro Fertilization (IVF) Technology for the laser-assisted hatching of fertilized human ova developed by Cell Robotics.
Cowbirds; might even be able to accelerate their hatching after picking up clues that nestmates are ready to break out, the researchers suggest.
We've found that it plays a key role in helping organ systems mature faster than they would have normally, so a young poult's state of maturity at hatching is more advanced.
A smaller number of eggs is buried in sediment before hatching and can remain dormant for years.