week 13 Bio 103 Flashcards
mosquitos go through
four stages of development
culex mosquitoes
lay their eggs on the surface of fresh water or flood plains
eggs lay either
alone or in groups that looks like rafts
eggs laid in winter…
…hatch in spring
first stage of a mosquito
larvae
how do larvae live and grow
live on water and breath through a tube, shedding skin, they feed
how do larvae protect themselves?
when the see a predator they can dive beneath the water
how long are they larvae?
few days - few weeks before they turn into pupae
second stage of a mosquito:
pupae
pupae
breathe through 2 small tubes, do not eat, yet are active
who long are they pupae?
one to a few days depending on water temperature
while inside the pupae
the larva transforms into an adult
what is the 3rd stage of mosquito
adult
adult
breaking out of the pupal case, resting while its exo skeleton hardens
adult female mosquitos:
can live from many days to weeks
adult male mosquitos:
only live a few days after mating
how does the sponge feed itself
its a filtering machine that sucks in water, only to take food particles
for an ounce of food
a sponge must pump through a ton of water
how many kinds of animals are identified?
950,000 (there are an estimated 7 million total specie)
how many new animals are identified each year?
10,000