LOGIN

RSS Facebook Twitter YouTube
GLOSSARY       

SEARCHGLOSSARY

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

PROFILESEARCH

Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





 

Minimum search word length is 4 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Cryptic speciation reversal in the Etheostoma zonale (Teleostei: Percidae) species group
September 15, 2013
10:00 pm
Avatar
Stefan
Community Helper
Forum Posts: 1567
Member Since:
January 29, 2012
sp_UserOfflineSmall Offline

Cryptic speciation reversal in the Etheostoma zonale (Teleostei: Percidae) species group, with an examination of the effect of recombination and introgression on species tree inference

 

Available online 29 August 2013

In Press, Uncorrected ProofNote to users

 

http://dx.doi.org/10.1016/j.ym.....013.08.014 

October 3, 2013
11:03 pm
Avatar
Stefan
Community Helper
Forum Posts: 1567
Member Since:
January 29, 2012
sp_UserOfflineSmall Offline

I wonder if despite Etheostoma sp. cf. zonale is undergoing serious introgression and eventually be completely invaded by E. zonale, would 'you' still describe it a new species?

October 4, 2013
9:37 am
Avatar
Matt
Málaga, Spain
Admin
Forum Posts: 8239
Member Since:
June 13, 2011
sp_UserOfflineSmall Offline

The abstract mentions it's already undergone 'speciation reversal' so where would the types come from?

Cake or death?
October 4, 2013
7:47 pm
Avatar
BillT
Eugene, Oregon
Veteran
Forum Posts: 228
Member Since:
September 10, 2010
sp_UserOnlineSmall Online

I like these issues of anastomosing phlyogenies, but I am curious about how they decide these are separate species or not.

 

It would seem to be by a degree of reproductive isolation. Complete isolation would not work or speciation reversal would not be possible so I am assuming there is some way to make a statistical decision on these things based on particular intorgressed genes on a background of diverged non-introgressed genes.

I feel I understand the way such a phylogeny is figured out but not where the particular species lines are drawn.

Bill Trevarrow [email protected]
October 8, 2013
9:32 pm
Avatar
Stefan
Community Helper
Forum Posts: 1567
Member Since:
January 29, 2012
sp_UserOfflineSmall Offline

BillT said
I like these issues of anastomosing phlyogenies, but I am curious about how they decide these are separate species or not.

 

It would seem to be by a degree of reproductive isolation. Complete isolation would not work or speciation reversal would not be possible so I am assuming there is some way to make a statistical decision on these things based on particular intorgressed genes on a background of diverged non-introgressed genes.

I feel I understand the way such a phylogeny is figured out but not where the particular species lines are drawn.

 

I think you've hit the nail on the head. Perhaps there will be a fortcoming study surrounding this particular E. sp. cf. zonale material? As to where the specific species lines are drawn is always the question and surely depends on the species concept applied to any unit, and interpetation by the authors thereof.

 

They do test 2 hypotheses, if I'm not mistaken, and there is no longer reproductive isolation, but there might have been/probably was in the past (stream capture and so on).

Forum Timezone: Europe/Paris

Most Users Ever Online: 246

Currently Online: BillT
1 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Devices in use: Desktop (2)

Top Posters:

Stefan: 1567

Plaamoo: 1253

mikev: 1134

Malti: 1099

Mark Duffill: 1012

Member Stats:

Guest Posters: 0

Members: 30287

Moderators: 0

Admins: 2

Forum Stats:

Groups: 4

Forums: 10

Topics: 4595

Posts: 36615

Newest Members: qchris87, grayergroove, bhisma wildan, costeacristianalex, knebeshwar

Administrators: dunc: 1323, Matt: 8239