Jump to content


Photo
- - - - -

Mimic octopus or wonderpus?


  • Please log in to reply
13 replies to this topic

#1 davichin

davichin

    Great White

  • Member
  • PipPipPipPip
  • 1105 posts
  • Gender:Male
  • Location:Las Palmas, Canary Islands, Spain

Posted 23 January 2008 - 04:24 PM

I saw this little guy (or girl :) ) in Lembeh and I thought it was a mimic but I find it too brown and I am not sure... any help? :P

Posted Image


Thank you very much!!
D300, D7000. 10.5, 10-17, 16, 10-20, 17-70, 60, 105, 150 Hugyfots, Subtronic Novas, Seacams 350, YS250s, YS-D1s
Aqualung Team
www.davidbarrio.com

#2 mtnman

mtnman

    Wolf Eel

  • Member
  • PipPip
  • 111 posts
  • Location:Patterson,NY

Posted 23 January 2008 - 05:40 PM

Wonderpus IMO.

#3 jcclink

jcclink

    Great Hammerhead

  • Member
  • PipPipPipPip
  • 740 posts
  • Gender:Male
  • Location:San Diego

Posted 23 January 2008 - 05:47 PM

Wunderpus always have bands like in your pic, even if they change color. Mimic may or may not have bands. They seem to be a bit more versitile.
Nexus D300, 10-17mm, 12-24mm, 17-55mm, 60mm, 105mm VR
S&S YS110's & YS27's

#4 Alex_Mustard

Alex_Mustard

    The Doctor

  • Super Mod
  • 8376 posts
  • Gender:Male
  • Location:Peterborough

Posted 25 January 2008 - 11:16 AM

I can't see the picture!

Alex

Alexander Mustard - www.amustard.com - www.magic-filters.com
Nikon D4 (Subal housing). Nikon D7100 (Subal housing). Olympus EPL-5 (Nauticam housing).


#5 davichin

davichin

    Great White

  • Member
  • PipPipPipPip
  • 1105 posts
  • Gender:Male
  • Location:Las Palmas, Canary Islands, Spain

Posted 25 January 2008 - 04:30 PM

I can't see the picture!

Alex


Hello Alex!

I donĀ“t know why the pic changed its link :) ....


Posted Image
D300, D7000. 10.5, 10-17, 16, 10-20, 17-70, 60, 105, 150 Hugyfots, Subtronic Novas, Seacams 350, YS250s, YS-D1s
Aqualung Team
www.davidbarrio.com

#6 AllisonFinch

AllisonFinch

    Eagle Ray

  • Member
  • PipPipPip
  • 399 posts
  • Location:Chapel Hill, NC
  • Interests:Caves, photos and long distance travel to dive.

Posted 25 January 2008 - 05:12 PM

The wide "webbing" makes one think it's a wonderpus. However, this and the banding aren't always the decider. I saw this guy in Lembeh;

Posted Image

The wide webbing and wide bands made me think wonderpus. Then, it ran off like this;


Posted Image

I would say this one was a definite Mimic.
So, in answer, hard to say!

#7 Alex_Mustard

Alex_Mustard

    The Doctor

  • Super Mod
  • 8376 posts
  • Gender:Male
  • Location:Peterborough

Posted 25 January 2008 - 07:24 PM

Hey David,

That's a Wonderpus.

Alex

Alexander Mustard - www.amustard.com - www.magic-filters.com
Nikon D4 (Subal housing). Nikon D7100 (Subal housing). Olympus EPL-5 (Nauticam housing).


#8 mandarinfish

mandarinfish

    Sting Ray

  • Member
  • PipPipPip
  • 281 posts
  • Gender:Female
  • Location:Oregon

Posted 25 January 2008 - 07:30 PM

Yes, agree with Alex. Dave's is definitely a wonderpus and Allison's is a mimic. The fastest way I tell is that the mimic has a thin white margin edging its legs, and the wonderpus does not. To me, they look distinctively different when I watch them in the water, but it's hard to describe.

#9 Scuba_SI

Scuba_SI

    Great White

  • Industry
  • PipPipPipPip
  • 1061 posts
  • Gender:Male
  • Location:Indonesia
  • Interests:Owner / Manager / Handyman at NAD-Lembeh.

Posted 25 January 2008 - 11:07 PM

isn't the main difference that on the wonderpuss the eyes and 'head' are on a stalk, whereas on the mimic it is much shorter. I would agree that Allison's is a mimic.

Nauticam Rossa / 5Dmk3 / A7r / EM-1 / S110

http://vimeo.com/lembehmuckdiver

www.nad-lembeh.com: 2:1 diveguide ratio for June / July 2014!!


#10 Lndr

Lndr

    Tiger Shark

  • Member
  • PipPipPipPip
  • 697 posts
  • Gender:Female
  • Location:Jervis Bay, Australia

Posted 26 January 2008 - 02:48 AM

Posted Image


:) its a gorgeous shot

#11 bartusderidder

bartusderidder

    Wolf Eel

  • Member
  • PipPip
  • 181 posts
  • Gender:Male
  • Location:Belgium

Posted 26 January 2008 - 02:58 AM

Great Wonderpus shot indeed !

Just noticed something in that pic: How come 2 of the arms are so much smaller compared to the others?
Any speficic reason/function?

#12 Scuba_SI

Scuba_SI

    Great White

  • Industry
  • PipPipPipPip
  • 1061 posts
  • Gender:Male
  • Location:Indonesia
  • Interests:Owner / Manager / Handyman at NAD-Lembeh.

Posted 26 January 2008 - 04:05 AM

It may be regeneration from a lost arm, although some octopus species have specialised arms for transferring sperm - they are usually smaller. In this example though i'd go for regeneration

Nauticam Rossa / 5Dmk3 / A7r / EM-1 / S110

http://vimeo.com/lembehmuckdiver

www.nad-lembeh.com: 2:1 diveguide ratio for June / July 2014!!


#13 reefnet

reefnet

    Wolf Eel

  • Industry
  • PipPip
  • 144 posts
  • Location:Mississauga, Ontario, Canada

Posted 26 January 2008 - 07:50 AM

Yes, agree with Alex. Dave's is definitely a wonderpus and Allison's is a mimic. The fastest way I tell is that the mimic has a thin white margin edging its legs, and the wonderpus does not. To me, they look distinctively different when I watch them in the water, but it's hard to describe.


In the process of trying to identify our images from Bali I've read the paper by Hochberg et al (2006) describing the wonderpus. They give a list of features that distinguish between a wonderpus and a mimic. The most useful (least subtle) ones are:

1. Shape of papilla above each eye

wonderpus: inflated and blunt-tipped
mimic: very elongate and finely pointed

2. Number of suckers on the long arms

wonderpus: up to 233
mimic: up to 283

3. Color pattern

wonderpus: well-defined, round white spot at rear tip of mantle
mimic: less well-defined, U-shaped white patch at rear tip of mantle

Feature 2 would be problematic working in the field or from a photo, but 1 and 3 should be do-able. I don't know how reliable the papilla shape is (how variable are they in each species?) but it seems to me that this criterion alone identifies Dave's as a wonderpus and Allison's as a mimic.

The paper doesn't mention width of webbing or white margins on the arms as distinguishing features, but they may not have examined enough specimens.

Les
ReefNet Inc. | www.reefnet.ca | 888-819-REEF or 905-608-9373

#14 davichin

davichin

    Great White

  • Member
  • PipPipPipPip
  • 1105 posts
  • Gender:Male
  • Location:Las Palmas, Canary Islands, Spain

Posted 30 January 2008 - 02:07 PM

Thank you very much!!
D300, D7000. 10.5, 10-17, 16, 10-20, 17-70, 60, 105, 150 Hugyfots, Subtronic Novas, Seacams 350, YS250s, YS-D1s
Aqualung Team
www.davidbarrio.com