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O chierchiae male hectocotylus contraction rlc.jpg
Neogonodactylus

O chierchiae male hectocotylus contraction rlc.jpg

Octopus chierchiae mating, The male is mounted on the female. The male's 1st. 2cd and 4th pair of arms can be identified by the presence of papillae on the arm tips. The 3rd pair of arms do not have papillae. The hectocotylus (3rd right arm) is visible at 11 o'clock. If you look about half way down the length of the hectocotylus you can see a section that appears to be contracted. This may be caused by a peristaltic wave passing down the arm. I've never seen this before and would be interested if you have seen something similar.
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Media information

Category
Octopus Care
Added by
Neogonodactylus
Date added
View count
1,146
Comment count
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Rating
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Image metadata

Device
NIKON CORPORATION NIKON D810
Aperture
ƒ/32
Focal length
105.0 mm
Exposure time
1/60
ISO
400
Filename
O chierchiae male hectocotylus contraction rlc.jpg
File size
3.7 MB
Date taken
Thu, 22 June 2017 2:34 PM
Dimensions
4476px x 3197px

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