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Why must there be aphids in a greenhouse before you introduce parasitic wasps?
Wiki User
∙ 9y ago
Parasitic wasps lay their eggs among the eggs of aphids. There must be aphids already present so that the wasps can lay their eggs and the wasp larvae will infect the aphid larvae.
Wiki User
∙ 9y ago
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Which common insect can self clone itself with the female being born pregnant?
The Insect That Is Born Pregnant. "Among nature's weirdest trick is the strange phenomenon known as merokinosis, reported for a single family of almost microscopic insects. The little creatures are fathers and mothers before they are born. They are a species of mite which infests grass. They belong to a family which, almost alone among insects, gives birth to living young, a species of grass mite that is born pregnant through merokinosis.
Do guineapigs get along with each other?
Male guineas get along quite happily. Although before you put any two guineas in a cage together, you might want to introduce them a bit slow so that they are familiar with each other.
Does a cow mate with her own male calf?
No. Her "male calf" which would be a bull calf is much too young, when considered a calf, to mate with his dam. Typically producers try to separate or wean bull calves from their dams before they (the bull calves) start puberty. And in most cases bull calves are too young to breed their dams when their dams ARE in heat, or are separated from their mothers before their mothers calve again. However, if a producer wants to introduce inbreeding into their herd, especially if that herd is a purebred herd, then it is likely that a cow will mate with her son, but only when he's at breeding age, which is over 12 months of age.
How many gorillas were there before?
Before what, exactly?
How young can a guppie be before its pregnant?
no fish should be pregnant before a year
Does Sevin kill aphids?
yes it does, i used it before
When did the Greenhouse effect start?
The Greenhouse effect started long before humans were on Earth. The Greenhouse effect is only intensified by the presence of humans.
Before supervisors introduce or communicate a new process to their team what plan should they develop?
Before supervisors introduce or communicate a new process to their team, what plan should they develop?
How do you introduce your boyfriend to your friends?
You say "Hay guys this is my boyfriend ______." If you don't think they'll react well. Tell them you have a boyfriend before you introduce him.
Should a supervisor introduce or communicate a new process using what plan?
Before supervisors introduce or communicate a new process to their team, what plan should they develop?
Subordinating conjunctions introduce?
Subordinating conjunctions introduce dependent clauses and join them to independent clauses to form complex sentences. They show the relationship between the dependent clause and the independent clause, such as cause and effect, or time sequence. Examples include "although," "because," "when," and "while."
What is a biological control of greenhouse whiteflies?
The parasitic wasp Encarsia formosa is an effective biological control of greenhouse whiteflies [Trialeurodes vaporariorum]. But temperatures mustn't be allowed to fall below 24 degrees Centrigrade/75 degrees Fahrenheit. Otherwise, the biological control dies before the pest because the lower temperatures keep the wasp from reproducing.AnswerThe above answer is correct. If you are unable to hold the required temperature tryusing pots of Tagetes dotted around. They don't kill the whitefly but the whitefly dislike the smell and go elsewhere.
Why young trees and plants are sometimes kept in greenhouse before they are planted outdoors?
Because they want to
How do you introduce your self in a creative manner?
Have friends talk you up before your entrance/introduction.
How big do mollies have to be before you introduce algae eaters in a salt water aquarium?
6 foot
Ways to introduce yourself?
say your name and hello before other person. This reduces shyness.
What do you do to a crush who's never talked to you before?
Dont be shy! Introduce your self but be kind and cheery!
