Comparison of the lateral line and ampullary systems of two species of shovelnose ray

Wueringer, Barbara E. and Tibbetts, Ian R. (2008) Comparison of the lateral line and ampullary systems of two species of shovelnose ray. Reviews in Fish Biology and Fisheries, 18 1: 47-64. doi:10.1007/s11160-007-9063-9

Author Wueringer, Barbara E.
Tibbetts, Ian R.
Title Comparison of the lateral line and ampullary systems of two species of shovelnose ray
Journal name Reviews in Fish Biology and Fisheries   Check publisher's open access policy
ISSN 0960-3166
Publication date 2008-02
Year available 2007
Sub-type Article (original research)
DOI 10.1007/s11160-007-9063-9
Volume 18
Issue 1
Start page 47
End page 64
Total pages 18
Editor J. L. Nielsen
Place of publication The Netherlands
Publisher Springer Netherlands
Collection year 2009
Language eng
Subject C1
960808 Marine Flora, Fauna and Biodiversity
060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
Formatted abstract
The anatomical characteristics of the mechanoreceptive lateral line system and electrosensory ampullae of Lorenzini of Rhinobatos typus and Aptychotrema rostrata are compared. The spatial distribution of somatic pores of both sensory systems is quite similar, as lateral line canals are bordered by electrosensory pore fields. Lateral line canals form a sub-epidermal, bilaterally symmetrical net on the dorsal and ventral surfaces; canals contain a nearly continuous row of sensory neuromasts along their length and are either non-pored or pored. Pored canals are connected to the surface through a single terminal pore or additionally possess numerous tubules along their length. On the dorsal surface of R. typus, all canals of the lateral line occur in the same locations as those of A. rostrata. Tubules branching off the lateral line canals of R. typus are ramified, which contrasts with the straight tubules of A. rostrata. The ventral prenasal lateral line canals of R. typus are pored and possess branched tubules in contrast to the non-pored straight canals in A. rostrata. Pores of the ampullae of Lorenzini are restricted to the cephalic region of the disk, extending only slightly onto the pectoral fins in both species. Ampullary canals penetrate subdermally and are detached from the dermis. Ampullae occur clustered together, and can be surrounded by capsules of connective tissue. We divided the somatic pores of the ampullae of Lorenzini of R. typus into 12 pore fields (10 in A. rostrata), corresponding to innervation and cluster formation. The total number of ampullary pores found on the ventral skin surface of R. typus is approximately six times higher (four times higher in A. rostrata) than dorsally. Pores are concentrated around the mouth, in the abdominal area between the gills and along the rostral cartilage. The ampullae of both species of shovelnose ray are multi-alveolate macroampullae, sensu Andres and von Düring (1988). Both the pore patterns and the distribution of the ampullary clusters in R. typus differ from A. rostrata, although a basic pore distribution pattern is conserved.
Keyword Mechanosensory lateral line
Ampullae of Lorenzini
Shovelnose rays
Octavolateralis system
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Ecology Centre Publications
Centre for Marine Studies Publications
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Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 26 times in Scopus Article | Citations
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Created: Thu, 16 Apr 2009, 15:52:49 EST by Peter Fogarty on behalf of Centre for Marine Studies