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- Path: sparky!uunet!crdgw1!rdsunx.crd.ge.com!NewsWatcher!user
- From: Ligon@macgw1.ge.com (Woody Ligon)
- Newsgroups: sci.environment
- Subject: Re: "Sub-Species" (was: Mt. Graham: UPi
- Message-ID: <Ligon-120193103559@3.1.100.11>
- Date: 12 Jan 93 15:50:25 GMT
- References: <Jym.8Jan1993.2247@naughty-peahen> <1466602032@igc.apc.org>
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-
- In article <1466602032@igc.apc.org>, ecologycntr@igc.apc.org (Ecology
- Center) wrote:
- >
- >
- > So. Woody,
- >
- > What exactly, then, is a species? As opposed to what you term
- > "just a subspecies".
- >
- > Hint: the definition you learned in High School Biology ("fertile
- > offspring") is not always applicable. Cacti and Orchids produce
- > fertile offspring from fertilization across GENERIC boundaries.
- > Then there are amoebae and the like, who produce fertile offspring
- > only with "themselves", meaning that according to the above
- > definition, each amoeba is a true species?
- >
- > There are clines, a species spread over a wide geographic area in
- > which neighboring populations are interfertile but populations at
- > "either end" cannot interbreed.
- >
- > I venture the following definition: A species is a taxon
- > constructed by human taxonomists, in which organisms are placed
- > that seem more like each other to those taxonomists than they seem
- > like organisms NOT placed in that species.
- >
- > chris
-
- Yes, as you suggest, taxonomy is both fluid and often arbitrary. However,
- with regard to the so called "endangered species" which started this thread
- some weeks ago--Mt. Graham Red Squirrel, Florida Panther, Northern Spotted
- Owl--the sort of classification problems that you correctly point out just
- don't exist. These are all more closely related and (taxonomically more
- similar) to other widely distributed red squirrels, panthers and owls
- respectively, than are greyhounds, beagles, and poodles taxonomically
- similar to each other.
-
- I hope that you aren't suggesting that ambiguity in some cases should
- justify misrepresentation in those cases which aren't ambiguous.
-
- Woody Ligon
- (ligon@macgw1.crd.ge.com)
- standard disclaimer applies
-