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Visceral anatomy

Let us examine the visceral anatomy of a European perch   (Perca fluviatilis, Percidae) :

Anatomy of Perca fluviatilis (Percidae)

These two images are taken from the Atlas anatomique d’ichtyologie (Chanet et al., 2009 Chanet.2009c), a CD-ROM which can be purchased at the Société Française d’Ichtyologie.

The following images havebeen  taken on a frozen and sawn female European perch  (sections and images by C. Guintard (Oniris, Nantes)).

 scale bar: 5 cm.




Have a look then in a nototheniid, Notothenia coriiceps, collected in Terre Adélie : Anatomy of Notothenia coriiceps (Nototheniidae) 

(Images: C. Ozouf-Costaz).
The animal is presented lying on its back (belly upwards), and intra-abdominal soft organs (heart, digestive tract ...) have been removed.
Swimbladder is absent in nototheniids.

In acanthomorphs, kidney plays two main functions. Blood filtration and urine production are done in the posterior part  of the kidney. The cephalic (=anterior) part of this organ has an haematopoietic role, and is where blood cells (red and white cells) are produced. For this function, the kidney of acanthomorphs is similar to the bone marrow of mammals. In acanthomorphs and teleosteans, this cephalic region or the spleen are used to collect cells for cytogenetic studies.