Insects that lay eggs are called orthopterans, which consist of common species such as praying mantis, cockroaches, crickets and grasshoppers. Although these insects all lay eggs, they have different methods of carrying out the egg laying process. All egg-producing insects have distinct methods of carrying, hatching and raising their young.
In addition to variation in egg-laying habits among species, there is also diversity in habits between members of the same species. In the cockroach family, for instance, females in only one family (Blaberidae) have egg cases that lack clear definition and structure. In some cockroach families, females carry egg sacs called oothecae outside their bodies until it is time for the eggs to emerge, while other females deposit their egg cases in nests several days before the eggs emerge.
The eggs produced by the different egg-laying insects vary in size, color and appearance. Eggs of the walking stick species, which includes praying mantis, look like small seeds and are usually dispersed by females loosely on the ground before hatching. Crickets, in contrast, lay their eggs within soils or plant materials and arrange their eggs in rows prior to hatching. Grasshoppers lay their eggs in soil or deposit them in dead wood or grass clumps. Grasshoppers produce large volumes of eggs, which are housed in protective sacs before hatching.Learn More
As insects, ladybugs lay eggs rather than giving birth to live young. The female ladybug will lay the eggs, which are typically light yellow and podlike in appearance, on the underside of leaves, where the eggs are offered a bit more protection from hazards such as falling rain and predators.Full Answer >
The buffalo and the cowbird have a symbiotic relationship, where the cowbirds eat the insects kicked up by the buffalo as they feed on grass. The cowbirds follow the buffalo and other cattle in search of the insects and historically kept to American grasslands. In modern times, cowbirds are considered parasitic birds and can be found throughout the United States.Full Answer >
Whales do not lay eggs and instead give birth to their calves as humans and other mammals do. When a female whale gives birth, she does so directly in the water and then helps the baby up to the surface to get its first breath.Full Answer >
Dolphins are marine mammals that give birth to live young following a gestation period of approximately 12 months. There are 40 species of dolphins, and they are all are part of the larger order of cetaceans, which includes all whales, dolphins and porpoises.Full Answer >