Polyodon

Paddlefish, Polyodon spathula Ohio River, Kentucky 1988-89 total PCBs males vs. females ... 

Gundersen, D.T. and W.D. Pearson. 1992. Partitioning of PCBs in the muscle and reproductive tissues of paddlefish, Polyodon spathula, at the falls of the Ohio River. Bull. Environ. Contam. Toxicol. 49 455-462. 

Pleuronectes yokohamae 416, 450 Pleuronichthys verticalis 460 Poecilia reticulata 257, 517, 518, Poeciliopsis lucida 51, 196 Polyodon spathula 280 Pomatoschistus lozanoi 450 Pomatoschistus minutus 450 Prionace glauca 279 Prochilodus scrofa 317 Protopterus aethiopicus 280 Pseudopleuronectes americanus, see Pleuronectes americanus Puntius gonionotus 241... 

Fig. 7.3. Two electron micrographs of molecules of IgM of the paddlefish (Polyodon spathula). The molecules span a total of about 380 to 480 A. The diameter of the central region is about 100 A. Reprinted from reference 20 through the courtesy of Dr. Emma Shelton. The IgM of the carp appears virtually identical (19).

Heterocercal tail development in the ancestral style Polyodon and Acipenser... 

Figure 19.6 Ventral portion of a paddlefish (Polyodon, 100 mm) caudal fin. There is some regionalisation in the endoskeletal morphology, with a boundary between the first hypural (hi) and parhypural (pj.This is the location at which the caudal lepidotrichia begin forming (Figure IS.4a). Dr=distal caudal radials hl=first hypural p=parhypural. Alcian blue/alizarin red staining.

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