How many eggs does a praying mantis lay?
26977166#18
The mating season in temperate climates typically takes place in autumn, while in tropical areas, mating can occur at any time of the year. To mate following courtship, the male usually leaps onto the female's back, clasping her thorax and wing bases with his forelegs. He then arches his abdomen to deposit and store sperm in a special chamber near the tip of the female's abdomen. The female lays between 10 and 400 eggs, depending on the species. Eggs are typically deposited in a froth mass-produced by glands in the abdomen. This froth hardens, creating a protective capsule, which together with the egg mass is called an ootheca. Depending on the species, the ootheca can be attached to a flat surface, wrapped around a plant, or even deposited in the ground. Despite the versatility and durability of the eggs, they are often preyed on, especially by several species of parasitoid wasps. In a few species, mostly ground and bark mantises in the family Tarachodidae, the mother guards the eggs. The cryptic "Tarachodes maurus" positions herself on bark with her abdomen covering her egg capsule, ambushing passing prey and moving very little until the eggs hatch. An unusual reproductive strategy is adopted by Brunner's stick mantis from the southern United States; no males have ever been found in this species, and the females breed parthenogenetically. The ability to reproduce by parthenogenesis has been recorded in at least two other species, "Sphodromantis viridis" and "Miomantis" sp., although these species usually reproduce sexually. In temperate climates, adults do not survive the winter and the eggs undergo a diapause, hatching in the spring.
Mantis
37017694#29
The females lay their eggs on trees, shrubs, rocks, vehicles, and plants of many types. She typically lays about 500 eggs. The eggs are covered with a peachy fuzz that can cause serious rashes if touched by bare skin or fur. Then the female leaves to eat, while her eggs are protected. She does not live to see her offspring.
Lymantria dispar dispar
297924#25
In the monogamous species, the mantis shrimps remain with the same partner up to 20 years. They share the same burrow and may be able to coordinate their activities. Both sexes often take care of the eggs (biparental care). In "Pullosquilla" and some species in "Nannosquilla", the female lays two clutches of eggs - one that the male tends and one that the female tends. In other species, the female looks after the eggs while the male hunts for both of them. After the eggs hatch, the offspring may spend up to three months as plankton.
Mantis shrimp
12620140#6
Most research regarding egg laying in the genus "Padogobius" relates to "P. martensi." Egg laying begins once the male has cleaned the underside of the rock of his nest. Once the female has navigated her way into the nest, she assumes a spawning position, in which her belly turns to the ceiling of the hollow. The female then lays on average 170 to 410 elongate shaped eggs per nest. While she is laying her eggs, the male periodically turns upside down to fertilize the eggs. This process takes approximately one hour, after which the female leaves the nest and she will be able to produce another clutch of eggs roughly 30 days later. In these polygynous fish, males will except eggs from many females, as observed with 2 to 3 sets of eggs at multiple stages of development in one nest. Larger males can reproduce more times and are able to obtain more females over the entire mating season. The male’s reproductive success is therefore measured by how many individual clutches he has under his care in his nest.
Padogobius
22657453#6
After breeding, the female can eat her mate because, like with most mantis species, they are cannibalistic. Nymphs up to their fourth instar are not cannibalistic. The female lay egg cases (ootheca) almost three times its size, and will usually hatch between 30 to 50 offspring. Ootheca survive in the same conditions as the mantis.
Pseudocreobotra wahlbergi
50753330#4
They are mostly ambush predators, but a few ground-dwelling species are found actively pursuing their prey. They normally live for about a year. In cooler climates, the adults lay eggs in autumn then die. The eggs are protected by their hard capsules and hatch in the spring. Females sometimes practice sexual cannibalism, eating their mates after copulation. Occasionally, the females decapitate the males just before or during mating. Over 2,400 species of mantis in about 430 genera are recognized.
List of mantids of Sri Lanka
2949471#4
The female lays 18 to 50 eggs at a time. While rare, up to 129 eggs have been found within a single nest, presumably from several layings. They lay their eggs in two layers, with a slight temperature difference between the two layers. This will result in a more even ratio of males and females. The caiman does not have sex chromosomes, but instead depends on temperature to determine the ratio of male and female offspring. Eggs at warmer temperatures (32 °C or higher) develop into females and eggs at cooler temperatures (31 °C or lower) develop into males.
Broad-snouted caiman
26977166#29
Mantises are among the insects most widely kept as pets. Because the lifespan of a mantis is only about a year, people who want to keep mantises often breed them. In 2013 at least 31 species were kept and bred in the United Kingdom, the Netherlands, and the United States. In 1996 at least 50 species were known to be kept in captivity by members of the Mantis Study Group. "The Independent" described the "giant Asian praying mantis" as "part stick insect with a touch of Buddhist monk", and stated that they needed a vivarium around 30 cm (12 in) on each side. "The Daily South" argued that a pet insect was no weirder than a pet rat or ferret, and that while a pet mantis was unusual, it would not "bark, shed, [or] need shots or a litter box".
Mantis
7801429#15
Brood parasitism is the process by which a female lays her eggs in a conspecific female's nest. Parasitic female moorhens (Gallinula chloropus) are known to lay one to six eggs in their neighbor's nests. In most cases the male paired with the conspecific female has been involved in extra-pair copulations with the parasitic mother. This causes maternity uncertainty for the female as not all species can readily identify their own eggs from another's, which imposes fitness costs of raising an offspring that is not her own. In some cases females will lay eggs in another's nest that were conceived by another male entirely. This process is known as quasi-parasitism and induces fitness costs on both the male and female of the parasitized nest who cannot be certain of paternity or maternity. This is a problem for white-fronted bee-eaters (Merops bullockoides), where it has been found through analysis of enzyme polymorphisms that approximately 9–12% of offspring are unrelated to one parent or none. The reproductive strategy of brood-parasitism is not only an intraspecies problem, as parasitic mothers will use the nests of one to 240 different host species. The fitness costs that these interactions impose strains on host parents to displace time, effort, and resources into offspring that are not their own, and are believed to reduce the hosts reproductive success by up to 50%. But time lost is not the greatest cost to some host species. Hosts that raise Cuculus and Chrysococcyx cuckoos lose all their offspring as the cuckoos kill them with mandibular hooks. While some other species do not directly kill a hosts' young, they often kill them indirectly through competition for food leading to eventual starvation. 
Why then do host species tolerate parasitic offspring? Several hypotheses have been tested to answer this question. One theory known as the quasi-parasitism hypothesis suggested that parasitic females were exchanging extra-pair copulations with host males for access to lay their eggs in the nest. This theory was denounced by DNA fingerprinting revealing that many offspring were sired by only the parasitic mother's mate and not the mate of the host female. Another theory was that this interaction fell under kin selection, and that perhaps the parasites and hosts were closely related and there was an inclusive fitness benefit to hosts. While this theory has not been completely denounced in some species like moorhens, it does not fully explain why then interspecific parasitism perseveres. The most widely accepted hypothesis is that hosts are deceived and cannot differentiate their own eggs or offspring. The deception model explains a coevolutionary arms race between hosts and parasites that has led to further adaptations in deception and host parasitism defense strategies. Parasitic cuckoos have developed a system for potentially successful parasitism by quickly laying a small mimetic egg during the hosts' laying period. Some parasitic mothers go as far to eject the eggs of hosts before laying their own eggs in the nest, which has been suggested to increase the efficiency of which their eggs are incubated and raised, all the while providing them with a meal in the process. Brood parasitism has been shown to be a coevolutionary arms race between hosts and parasites with new adaptations of egg recognition being selected for in hosts, and new strategies of trickery and deception being selected for in parasites to exploit hosts.
Reproductive suppression
43944618#7
The queen lays less than 1.5 eggs per day on average. She lays eggs parallel to the construction of the cells. She may lay two eggs in the same cell, even if there are open cells—in this case, only one egg develops. However, no more than 20% of the cells are empty at a time. However, a queen does not reuse cells once an egg has occupied them.
Polistes snelleni