Hostname: page-component-78c5997874-8bhkd Total loading time: 0 Render date: 2024-11-16T20:21:14.943Z Has data issue: false hasContentIssue false
  • English
  • Français

Examination of Structural Differences in Gill Vasculature Among Some Batiod Elasmobranchs Using Corrosion Casting and SEM

Published online by Cambridge University Press:  02 July 2020

R.L. Sherman
R.L. Sherman*
Affiliation:
Nova Southeastern University, Department of Math Science and Technology, Fort Lauderdale, Florida, 33314, USA; [email protected]
Get access

Abstract

Classic studies of gill vasculature indicate the gross anatomy of elasmobranch gills is similar in most species, and in general, resembles those of teleosts. However, studies of fine gill structure examining arterio-arterial pathways in several species of batoid elasmobranchs (Order: Rajiiformes, Suborder: Myliobatoidei) have reported some structural differences. These differences include the presence, in urolophids (Urolophus jamaicensis, U. mucosus, U. paucimaculatus), of 1) a tip channel, possibly an extension of the afferent filament artery that runs along the top of the filament corpus cavernosum, and 2) a vascular arcade, a vessel which connects the afferent filament arteries of a hemibranch near the tip of each filament (FIG. I). Until recently these structures were believed to be unique to the urolophids as they were not previously found in either rajids (Raja erinacea, R. clavata) or the shark Scyliorhinus canicula. Animals of mixed species and sexes were collected, perfused, and acrylic casts made of the circulatory system.

Type
Recent Techniques for the Fixation and Staining of Biological Samples (Organized by M. Sanders and K. McDonald)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 1208 - 1209
Copyright
Copyright © Microscopy Society of America 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References:

1Donald, J. 1989. Vascular anatomy of the gills of the Stingarees Urolophus mucosus and U. paucimaculatus (Urolophidae, Elasmobranchii). J. of Morph. 200:37–46.CrossRefGoogle ScholarPubMed
2Sherman, R.L. and Spieler, R.E. 1998. Examination of gill vasculature of the yellow stingray, Urolophus jamaicensis (Urolophidae), by SEM observations of resin casts. Ital. J. Zool. 65, Suppl,:431–434.CrossRefGoogle Scholar
3Laurent, P. 1984. Gill internal morphology. in Hoar, W.S. and Randall, D. J. (eds.): Fish Physiology. Vol. 10A. New York: Academic Press, pp. 73–183.Google Scholar
4Olson, K.R., and Kent, B.. 1980. The microvasculature of the elasmobranch gill. Cell Tissue Res. 209, 49–63.CrossRefGoogle ScholarPubMed