[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: KillieTalk Digest V3 #1273
Absolutely. But, the same brightness that allows the female to pick
out the male despite murky conditions also makes it more visible to
predators. So the color must be combined with alertness, strength, speed,
agility or other physical attributes that translate into likely genetic
success, and therefore suitability as a partner for the female.
----- Original Message -----
From: "Edward Venn" <e_venn at hotmail_com>
To: <killietalk at aka_org>
Sent: Wednesday, June 13, 2001 9:57 AM
Subject: Re: KillieTalk Digest V3 #1273
> This sounds like a plausible theory. But, bright colours may not be the
> for predators after all, the canids and felines are colour blind, reptiles
> and amphibians are drawn to motion, heat signatures and vibration.
> avians and predatory fish are the only predators of fish that see in
> In a turbid pond this would not be such a death sentence as the mud and
> other debris would reduce visibility. The bright colours of males would
> females to recognize that this is a male and not another female. In short
> lived fish such as killies there is not room for mistakes. Case in point,
> many frogs in breeding frenzy waste time clasping the wrong species and/or
> the wrong sex. This is wasteful of time and sperm.
> Tokyo Japan
> > Bright color can result in improved breeding success even where
> >there are many predators who do indeed find the more colorful individuals
> >especially well. The plumage of peacocks and pheasants, and possibly
> >colors, may make predation easier. This means that beautiful males who
> >manage to escape predation are especially suitable breeders, and are
> >to be picked by females as mates for that reason.
> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
> See http://www.aka.org/AKA/subkillietalk.html to unsubscribe
See http://www.aka.org/AKA/subkillietalk.html to unsubscribe