Hatch

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Related to hatching: assisted hatching

Hatch

A gateway or cover for a divide between decks of a ship. See also: International trade.
References in periodicals archive ?
Insect hatching often exhibits a strong diurnal rhythm.
Little is known about daily hatching rhythms in the approximately 11,100 species of grasshopper, despite the importance of hatching biology in gaining a broader understanding of the population dynamics of pest grasshoppers and locusts.
Just before hatching, the tail of the embryo is 1 3/4 of the way around the yolk and the tail tip is even with the posterior margin of the eye.
Successful hatching was observed in all of the temperature treatments, but hatch patterns (time to first hatch, peak hatch, and hatch duration) were negatively related to temperature as indicated in the series of exponential decay, two-parameter models shown in Figure 3 (see Table 1 for model parameter estimates).
Although the hatching process of leafhopper eggs might commence with the first light stimulus at dawn for all temperatures, the hatching of first instars could continue much later in the day when temperatures are cool enough to slow hatching activity.
In an earlier study, Andrew Sih, also of the University of Kentucky, found the reverse response--a hatching delay--in streamside salamander eggs exposed to chemical traces of predatory sunfish or marauding gangs of flatworms.
Research has shown the ZILOS-tk(R) to be beneficial to the IVF clinic in terms of embryo safety, procedure speed, and simplification of the assisted hatching process.
Hamilton Thorne Research can now combine the marketing and sales of its sperm-analysis technology with the CRII-purchased laser-assisted hatching technology, to provide state-of-the-art instrumentation to improve pregnancy rates in the growing fertility enhancement market.
So Guillette's team began surveying the hatching rate of eggs on various lakes: in all, more than 1,200 nests accounting for morte than 50,000 alligator eggs.
It is thought that assisted hatching improves the embryo's chances of hatching and developing into a healthy fetus.
A biologist has found what he calls the "best worked-out" example of diet influencing an animal's development: a caterpillar that grows to look like either a flower or a twig, depending on what it eats after hatching.
While some dinosaurs appear to have been early developers that could walk about immediately after hatching, others remaining in the nest and relied on doting parents for sustenance, report John R.