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Aphids

Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html

My kids get postings everyday from a site with "cool facts". I thought you
might find this interesting!
Melody

What insect has the shortest generation time?

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The insect with the shortest known generation time (the time from one
stage in its life cycle until the same stage in its offspring's life
cycle) is the apple grain aphid (Rhopalosiphum prunifoliae/fitchii),
which can bear live young only 4.7 days after being born.

Other kinds of aphids are almost as prolific, bearing live young
anywhere from five to seven days after being born.  Such rapid-
breeding aphids are parthenogenetic mothers, meaning that when
conditions are good they bear genetically identical clones of
themselves without mating.  They are so prolific that when they are
born they already carry the embryos of their first children.

Now you know how those huge colonies of aphids seem to materialize
almost overnight on the roses.

The apple grain aphid:
http://everest.ento.vt.edu/Fruitfiles/AGA.html

The closely related corn leaf aphid (Rhopalosiphum maidis):
http://ipmwww.ncsu.edu/AG271/small_grains/corn_leaf_aphid.html

A short research paper about the study that revealed today's Cool Fact:
http://gnv.ifas.ufl.edu/~tjw/chap06.htm

More Cool Facts about insects:
http://www.cool-fact.com/archive/1998/07/21.html
http://www.cool-fact.com/archive/1998/10/13.html
http://www.cool-fact.com/archive/1998/12/10.html


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Sent: Wednesday, April 19, 2000 5:05 PM
Subject: Fwd: Cucumber seedlings have blosssoms...


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