Eno, Nancy Clare
Functional morphology of cephalopod gills.
PhD Thesis, University of Cambridge,
There is a wealth of literature dealing with fish gills
(Review, see Hoar & Randall, 1984), yet hardly anything is known about the gills of cephalopods. This is rather
surprising considering the commercial importance of the
In view of the paucity of information available it was
necessary to start by establishing the morphology of the
gills. This is covered in the first section of this thesis.
Of all the cephalopods, Octopus vulgaris was singled out
for more detailed investigation (see chapters 2 & 3) as its
physiology is comparatively well understood (Wells, 1978).
The gills of cephalopods are the major sites for respiratory
gaseous exchange. It follows that their dimensions might be
expected to govern their potential for absorbing oxygen.
Section two deals with the morphometries of cephalopod gills, and predicted values are compared with physiological
measurements of oxygen uptake for four representative
The final section describes the physiological experiments I
performed on octopuses. These experiments were designed to
find out whether the animals could regulate the gills'
potential to take up oxygen through changes to the gills
||Functional morphology of cephalopod gills
|Eno, Nancy Clare|
|Number of Pages:
||University of Cambridge
||The dissertation has been divided into 4 parts to keep the size manageable for downloading (three sections + appendices). The dissertation contains 34 pages of photographs. These are included in the dissertation, but those are B&W and at relatively low resolution. They were then re-scanned at high-resolution grayscale (600 dpi TIFF). A separate file with 300 dpi jpg versions of the images is here. If even higher resolution versions are needed, contact the Miller Library at Hopkins Marine Station.
||23 Apr 2009 17:15
||11 May 2012 19:42
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