[sci.bio] Australian bats - placental or marsupial?

rw@aiva.ed.ac.uk (Richard White) (05/04/88)

Just a quikie, over here (UK) the BBC are showing a documentary series
on the natural history of Australia. On last night's program a species
of bat was mentioned. Questions: a) are Australian bats placental or
marsupial? b) if placental, are there any other indigenous placental
mammals in Australia ( if indeed bats are indigenous ) c) are there any
species of flying marsupials ( i.e. not gliding ) elsewhere in the world?

Hope someone can help

Richard White,				JANET: R.White@uk.ac.edinburgh
Department of Artificial Intelligence,  ARPA: R.White%uk.ac.ed@nss.ucl.ac.uk
University of Edinburgh			UUCP: ...!ukc!ed.ac.uk!R.White
					 

firth@sei.cmu.edu (Robert Firth) (05/07/88)

In article <394@aiva.ed.ac.uk> rw@aiva.ed.ac.uk (Richard White) writes:
>Just a quikie, over here (UK) the BBC are showing a documentary series
>on the natural history of Australia. On last night's program a species
>of bat was mentioned. Questions: a) are Australian bats placental or
>marsupial? b) if placental, are there any other indigenous placental
>mammals in Australia ( if indeed bats are indigenous ) c) are there any
>species of flying marsupials ( i.e. not gliding ) elsewhere in the world?

Bats are warm, soft, friendly creatures.  Even Australian bats.
These answers are based on what I remember from a couple of books
about bats:

(a) Australian bats are placental mammals

(b) They flew there via the Indonesian Archipelago, and so are not
    "indigenous"

(c) Of the mammals, only order Chiroptera - the bats - is capable of
    true flight.

sabol@reed.UUCP (Bryan Sabol) (05/08/88)

In article <394@aiva.ed.ac.uk> rw@aiva.ed.ac.uk (Richard White) writes:
>of bat was mentioned. Questions: a) are Australian bats placental or
>marsupial? b) if placental, are there any other indigenous placental
>mammals in Australia ( if indeed bats are indigenous ) c) are there any
>species of flying marsupials ( i.e. not gliding ) elsewhere in the world?
					 

	I can't give you specific sources of information, but as long as
you're talking about true bats, then I'm pretty sure that they are
placental.  I doubt that they're indigenous (educated guess here); and I
doubt that there is any flying marsupial...bats were always termed the
only flying mammal, period.

bryan sabol
reedie at large

doug@wiley.UUCP (Doug Rudoff) (05/08/88)

In article <394@aiva.ed.ac.uk> rw@aiva.ed.ac.uk (Richard White) writes:

> Questions: a) are Australian bats placental or
>marsupial?

Placental.

> b) if placental, are there any other indigenous placental
>mammals in Australia ( if indeed bats are indigenous )

Dingoes and humans.  Actually the answer to the question depends on
how you define indigenous. The marsupials evolved on Australia. The
others are immigrants. It's pretty obvious how bats and human could
get to Australia, but I'm not sure on the orgin of the dingo.

> c) are there any
>species of flying marsupials ( i.e. not gliding ) elsewhere in the world?

No.


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rim@csadfa.oz (Bob McKay) (05/10/88)

> marsupial? b) if placental, are there any other indigenous placental
> mammals in Australia ( if indeed bats are indigenous ) c) are there any
> species of flying marsupials ( i.e. not gliding ) elsewhere in the world?
>

To expand on a previous answer:

a) All Australian bats are placental.  But they're not particularly recent 
arrivals, as seemed to be implied by the earlier reply.

b) There ARE other indigenous placental mammals - apart from the expected ones,
like seals, cetaceans etc., there is a considerable variety of placental mice
and rats, the extent of radiation suggesting that they have also been here a 
fair while (there are also a number of so-called marsupial 'mice' and 'rats', 
just to confuse the picture).  Then there is the dingo, which was here long 
before European settlement, but was PROBABLY introduced by the aboriginals.  

c) None of the Australasian marsupials fly (although feather gliders - a species
of possum - sometimes look like they're right on the verge)

d) The only non-Australasian marsupials now extant are the oppossum group of
South America (with recent extension into N America).  Offhand, I don't think
any of them glide.
-- 
Bob McKay		   Phone ISD:	+61 62 68 8169	    STD: (062) 68 8169
Dept. Computer Science		ACSNET,CSNET:	rim@csadfa.cs.adfa.oz
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