Kata, Marcus, 1949
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publication ID |
https://doi.org/ 10.1080/00222930400001574 |
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persistent identifier |
https://treatment.plazi.org/id/03BC5A4B-FFB5-FFDC-FF1F-76A004FEFABA |
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treatment provided by |
Carolina |
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scientific name |
Kata |
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Kata sp.
( Figure 3 View Figure 3 )
Locality
Uruguay river near Las Cañas, Río Negro Department , Uruguay. Sublittoral , sandy sediments, November 2002 .
Material
Ten immature individuals studied alive, six immature specimens sagittally sectioned (4 mm), voucher specimens deposited in Helminthological Collection, Museo de La Plata, Argentina (cat. no. 5312).
Description
The live specimens studied move fast and very spastically. Colourless and translucent, approximately 1 mm long. Anterior end clearly set off as a cephalic lobe with long sensory bristles. Two lateral pairs of strong bristles behind the lobe. Two groups of rhabdites at each side on the cephalic lobe. Caudally tapering evenly to pointed end. Numerous, fingerlike adhesive papillae at the posterior end, and also distributed at moderately regular distances along the body. Epidermis with depressed nuclei. The ciliated creeping sole extending from the anterior end to the genital pore. Well-developed ventral muscle layers. Large, cylindrical and horizontally located pharynx situated in the last third of the body. The gut does not extend above the characteristically shaped brain.
The reproductive organs were not entirely developed. One pair of small immature ovaries lie at the basis of the pharynx. There are two lateral rows of yolk follicles, with gaps beside and behind the pharynx in the studied animals.
Discussion. The genus Kata is characterized by the following features: depressed epidermis; adhesive papillae mainly in the posterior end; conical caudal end; cylindrical pharynx topographically arranged in the last third of the body; testes, two rods of yolk glands and paired ovaries in front of the pharynx; cuticular apparatus with circular positioned needles and with or without stylet; paired or unpaired bursal organ with a dorsal porus vaginalis. Not considering the male copulatory organ and the bursal organ, of which hardly anything is known, the captured specimens are closely related to the species of genus Kata , specially due to their external characteristics and internal anatomy, and are consequently regarded (provisionally) as a species of Kata .
In the event that this species belongs to genus Kata , it is necessary to emphasize that this would be the first record of a specimen of Kata in a freshwater habitat.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.