Original paper

Setular bosses: Report of a new ultrafine structure on the filter appendages of Daphnia

Villalobos, Lorena; Geller, Walter

Archiv für Hydrobiologie - Hauptbände Volume 140 Number 4 (1997), p. 565 - 575

22 references

published: Nov 27, 1997

DOI: 10.1127/archiv-hydrobiol/140/1997/565

BibTeX file

ArtNo. ESP141014004008, Price: 29.00 €

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Ultrafine new knob-like structures on the setulae of Daphnia were found by scanning electron microscopy. The size of the setular bosses or round knobs ranged from 20 to 66 nm in diameter, and the numbers varied from 23 to 138 per setula. The structures of the filter limbs 3 and 4 were studied in 19 populations of 12 Daphnia species, originating from lakes in South America (14), Europe (4), and Japan (1). A significant correlation was found between the length of setulae and the number of setular bosses.


DaphniaSouth AmericaEuropeJapansetular