Pseudobranchus

Otterwoman

Administrator
Staff member
Joined
Dec 13, 2006
Messages
6,620
Reaction score
86
Points
48
Location
Wappingers Falls, NY
Country
United States
Does this refer to an animal with external gills, or can they have internal gills?

I ask because in the Petranka book (which I finished last night!!!), it calls hellbenders perennibranches, but you don't see gills in adults.
 

John

Founder
Staff member
Joined
Feb 6, 2001
Messages
8,058
Reaction score
249
Points
63
Age
44
Location
USA
Country
Ireland
Display Name
John Clare
Perennibranchiate salamanders have gills for their entire lives. The clue here is in the name: Crypto branchus - Hidden Gill. These salamanders have folds of skin that effectively act as external gills, but the fact that they work like gills is not obvious to the eye, hence the name. In essence, a gill is simply a structure that allows blood to carry out gaseous exchange with water, and the skin of most salamanders is capable of this to a lesser or greater degree. Cryptobranchids carry this to an extreme.

So Petranka's use of the word is in a non-conventional sense, in my opinion, because most gilled salamanders have truly independent structures at the head for gaseous exchange.
 

Otterwoman

Administrator
Staff member
Joined
Dec 13, 2006
Messages
6,620
Reaction score
86
Points
48
Location
Wappingers Falls, NY
Country
United States
Thanks! This is a really good explanation and cuts exactly to the point that confused me.
 

Jennewt

Administrator
Staff member
Joined
May 27, 2005
Messages
12,431
Reaction score
97
Points
48
Location
USA
Country
United States
Good stuff! Could either of you be so kind as to word this into a definition for the Glossary?
 

John

Founder
Staff member
Joined
Feb 6, 2001
Messages
8,058
Reaction score
249
Points
63
Age
44
Location
USA
Country
Ireland
Display Name
John Clare
Feedback on the other thread please.
 

John

Founder
Staff member
Joined
Feb 6, 2001
Messages
8,058
Reaction score
249
Points
63
Age
44
Location
USA
Country
Ireland
Display Name
John Clare
Well pseudo means false or imitation. There I leave you.
 

Otterwoman

Administrator
Staff member
Joined
Dec 13, 2006
Messages
6,620
Reaction score
86
Points
48
Location
Wappingers Falls, NY
Country
United States
Well, that part I knew...I meant, what was special about them anatomically that they would be given a name like that...
 

John

Founder
Staff member
Joined
Feb 6, 2001
Messages
8,058
Reaction score
249
Points
63
Age
44
Location
USA
Country
Ireland
Display Name
John Clare
I know next to nothing about Pseudobranchus. Don't they have small legs? It might refer to that rather than gills but I am only guessing.
 

Otterwoman

Administrator
Staff member
Joined
Dec 13, 2006
Messages
6,620
Reaction score
86
Points
48
Location
Wappingers Falls, NY
Country
United States
I finished Duellman and Trueb last night at work. Whew! I found the "hedonic" glands and the "prootic" and "squamosal" terms, and many more terms I never imagined, plus a few I think came from Dr. Seuss (the "prezygapophyses" and the "postzygapophyses" I believe came from his book, "Oh say can you say.";) And if they didn't, they should have). "Caudalipuboischiotibialis"? come on, really. How many of you were snickering to yourselves when I said I would take this on? I can summarize this book in one word: "TMI." I'm sure one could be an excellent amphibian vet and not need to know half the stuff in that book. Well, what did Nietzsche say? What doesn't kill us makes us stronger. I'm stronger just for having lugged that book in and out of my locker every night.
That said, I did learn alot, even though there were times when it wasn't an issue of which parts I didn't understand, but rather, "oooh! Here's a sentence I sort of get!"

Anyway, the reason I'm posting this here is because I think this is the reason for the name "pseudobranchus" : The author is talking about obligate neotenes: "the fifteen species of obligate neotenic salamanders...exhibit different patterns of partial metamorphosis[....] Salamanders of the genera Andrias, Cryptobranchus, and Amphiuma resorb their gills, and in Andrias the gill slits close. Three pairs of external gills are retained in the adults of all the the others, except Pseudobrahnchus, which retains only one pair. (p.191).

I just find this interesting, so sorry if maybe you're bored.

Next on the menu: Stebbins. I read 3 chapters last night also (snow storm; decided to do a double) and it's much more approachable.
 

Jan

Site Contributor
Joined
Mar 3, 2006
Messages
1,626
Reaction score
34
Points
48
Location
Philadelphia, PA
Country
United States
Might we get a concise definition of Pseudobranchus?

Perennibranch was concisely defined in another thread.
 

Ken Worthington

New member
Joined
Jun 19, 2010
Messages
419
Reaction score
14
Points
0
Location
Midlands UK
Country
England
If I might add to this thread, knowing nothing of the species but having an interest in the name.

'Pseudo' = false

'Branchus' = stalk

So I think 'stalk' would refer to it being external; the word 'branchus' is masculine ( rather than feminine or neuter) which...ahem....makes sense.

However, a derivation of 'branchus' is 'arm' in Italian (Italian being very similar to Latin).

'Arm' in this case would seem appropriate, especially as this would translate as 'false-arms' and again, there being one pair might support my rather amatuerish theory!( Quote: 'except Pseudobranchus, which retains only one pair')

This might all be gibberish, of course, but I hope I haven't wasted anyone's time with this post......
 
General chit-chat
Help Users
  • No one is chatting at the moment.
  • Ax0lot:
    Hey does anyone know why my axolotls mouth is stuck open? Been like that for a few weeks and when I tested water everything was fine
    +1
    Unlike
  • blubford:
    you should probably take it to the vet
    +1
    Unlike
  • blubford:
    so that dumb salamander state to state import bill didnt pass i take it right
    +1
    Unlike
  • blubford:
    havent heard news about it in a good while
    +1
    Unlike
  • wnorman293:
    Hi, how do you delete a post?
    +1
    Unlike
  • blubford:
    you dont
    +1
    Unlike
  • blubford:
    just kidding but i think there should be an option for it on your profile mabye
    +1
    Unlike
  • ipsoslolly:
    Hi guys my axolotl has not used his back legs since late Tuesday night,is this normal . He back half keeps floating up the way
    +1
    Unlike
  • blubford:
    that doesnt sound good
    +1
    Unlike
  • bearbear_13:
    Is it normal for my axie to eat every day? He’s overly hungry 😛
    +1
    Unlike
  • Dr. Phil:
    I'm new here but do I detect a bit of sarcasm in these comments? Ya'll sound like a fine bunch to me!
    +1
    Unlike
  • axolotl nerd:
    oh yes we’re all very sarcastic
    +1
    Unlike
  • Jokerjay:
    My son and I have been looking for a water dog/tiger salamander for quite some time now with no luck has anybody know how or where to find any
    +1
    Unlike
  • Jokerjay:
    @axolotl nerd, where can I find waterdogs or tiger salamanders my son has wanted one for a long time and I've been searching high and low with no luck
    +1
    Unlike
  • xxianxx:
    @Jokerjay, its a good idea to tell people where you are from. This is an international group. I have eastern tigers, im in the uk.
    +1
    Unlike
  • axolotl nerd:
    @Jokerjay, as in water dogs do you mean axolotls? i suggest very heavy research and a fully cycled tank before even considering purchasing one
    +1
    Unlike
  • bearbear_13:
    Axolotls are amazing until they get sick and then they’re a pain in the backside to treat - I recently lost two axolotls due to unknown causes
    +1
    Unlike
  • KonaGoldAquatics:
    Anyone from the us? Looking for at least one or two axolotls for me and my son to have our own at-home project together.
    +1
    Unlike
  • axolotl nerd:
    i highly recommend “buyanaxolotl.com”- ive purchased from them and received a beautiful animal for relatively cheap, in great condition, and excellent shipping precautions. the breeders are a couple living in georgia (i believe, don’t quite remember) and they’re fantastic. sometimes their website contact page doesn’t work, so i’d probably try just emailing them. good luck and happy hunting!
    +1
    Unlike
  • blubford:
    do those aquarium fans work well for axolotls
    +1
    Unlike
  • Sheryl Fraser:
    My little guy got stuck in the filter yesterday. His back leg is red. Will this heal
    +1
    Unlike
  • Chat Bot:
    Z-One has left the room.
    +1
    Unlike
  • KonaGoldAquatics:
    Any recommendations on a water chiller for a 10gallon but will work for a 20gal when I decide to upgrade?
    +1
    Unlike
  • Tinc Tank:
    Anybody working with and breeding Salamandra salamandra salamandra?
    +2
    Unlike
  • blubford:
    heh
    +1
    Unlike
    blubford: heh +1
    Top