EvC Forum: Rat

DC85

Member

Posts: 876

From: Richmond, Virginia USA

Joined: 05-06-2003

DC85 Posts Only

Message 1 of 8 (158521)
11-11-2004 8:31 PM

I am sorry this is a short topic.

I seem to remember a topic on a new species of rat.... Can someone please direct me to that topic?

My site The Atheist Bible

My New Debate Fourms!

Replies to this message:
	Message 2 by AdminAsgara, posted 11-11-2004 8:37 PM	DC85 has not replied
	Message 5 by Morte, posted 11-12-2004 12:26 AM	DC85 has not replied

DC85

Member

Posts: 876

From: Richmond, Virginia USA

Joined: 05-06-2003

DC85 Posts Only

Message 3 of 8 (158550)
11-11-2004 9:28 PM

That is it... thank you... but I thought there was a source in that topic... Anyone have one?

My site The Atheist Bible

My New Debate Fourms!

Replies to this message:
	Message 6 by Asgara, posted 11-12-2004 12:34 AM	DC85 has not replied
	Message 7 by pink sasquatch, posted 11-12-2004 4:25 PM	DC85 has not replied

Morte

Member (Idle past 6123 days)

Posts: 140

From: Texas

Joined: 05-03-2004

Morte Posts Only

Message 5 of 8 (158601)
11-12-2004 12:26 AM

Reply to: Message 1 by DC85
11-11-2004 8:31 PM

Message 3

Not sure if this will help now, but here's another post by Lam about it - it doesn't have a link to any info about the rats, but it does say that the species was only recently discovered and there isn't much information on it.

This message is a reply to:
	Message 1 by DC85, posted 11-11-2004 8:31 PM		DC85 has not replied

pink sasquatch

Member (Idle past 6043 days)

Posts: 1567

Joined: 06-10-2004

pink sasquatch Posts Only

Message 7 of 8 (158846)
11-12-2004 4:25 PM

Reply to: Message 3 by DC85
11-11-2004 9:28 PM

here's the original article

Access via pubmed here, you need journal access for full text.

Nature. 1999 Sep 23;401(6751):341.

Discovery of tetraploidy in a mammal.

Gallardo MH, Bickham JW, Honeycutt RL, Ojeda RA, Kohler N.

Instituto de Ecologia y Evolucion, Universidad Austral de Chile, Valdivia. mgallard@uach.cl

"Nevertheless, genetic evidence indicates that the red viscacha rat, Tympanoctomys barrerae (Octodontidae), is tetraploid. T. barrerae, which is a highly specialized desert rodent, has the largest chromosome complement in mammals with a single XY sex-chromosome system (Fig. 1). Although little is known about meiotic chromosome pairing in T. barrerae, the constant diploid number found in 13 specimens examined at three localities in Argentina indicates that segregation occurs normally."

PMID: 10517628

If you can access the article they have a great comparative figure showing that the tetraploid rat has enormous sperm to accommodate the extra DNA.

This message is a reply to:
	Message 3 by DC85, posted 11-11-2004 9:28 PM		DC85 has not replied

4 online now:	DrJones*, Minnemooseus (Adminnemooseus), PaulK, Theodoric
Newest Member:	popoi
Post Volume:	Total: 916,385 Year: 3,642/9,624 Month: 513/974 Week: 126/276 Day: 23/31 Hour: 0/0