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Blue Tang
Acanthurus
coeruleus
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<Click
on image for magnified view.>
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Kidney
(100x). a) tubule. b) interrenal tissue.
c) glomerulus.
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Kidney
(250x). a) proximal tubule segment. b) melanomacrophage
center. c) collecting tubule. d) distal tubule segment.
e) interrenal tissue.
The apparent fewer number of melanomacrophage centers is
not specific to this species.
The kidney is not divided into grossly distinct anterior
and posterior sections as it is in many fish species. Function
is evident at the microscopic level.
Most teleosts have anterior and posterior kidneys, with
the posterior involved in excretory function and anterior
acting in the hematopoetic role. In hematoxylin and eosin
stained specimens, basophilic interrenal tissue is hematopoetic. |
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