The lateral line receptor array of cyprinids from different habitats

ABSTRACT The lateral line system of teleost fishes consists of an array of superficial and canal neuromasts (CN). Number and distribution of neuromasts and the morphology of the lateral line canals vary across species. We investigated the morphology of the lateral line system in four diurnal Europea...

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Bibliographic Details
Published in:Journal of morphology (1931) 2014-04, Vol.275 (4), p.357-370
Main Authors: Schmitz, Anke, Bleckmann, Horst, Mogdans, Joachim
Format: Article
Language:English
Subjects:
Animals
Cyprinidae - anatomy & histology
Cyprinidae - classification
Cyprinidae - physiology
Ecosystem
fish
Fishes - anatomy & histology
Fishes - classification
Fishes - physiology
Freshwater
Gobio gobio
hair cell
Lateral Line System - cytology
Leuciscus idus
Mechanoreceptors - cytology
Mechanoreceptors - physiology
neuromast
peripheral filter
Phoxinus phoxinus
Rhodeus sericeus
Teleostei
water flow
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Summary:ABSTRACT The lateral line system of teleost fishes consists of an array of superficial and canal neuromasts (CN). Number and distribution of neuromasts and the morphology of the lateral line canals vary across species. We investigated the morphology of the lateral line system in four diurnal European cyprinids, the limnophilic bitterling (Rhodeus sericeus), the indifferent gudgeon (Gobio gobio), and ide (Leuciscus idus), and the rheophilic minnow (Phoxinus phoxinus). All fish had lateral line canals on head and trunk. The total number of both, CN and superficial neuromasts (SN), was comparable in minnow and ide but was greater than in gudgeon and bitterling. The ratio of SNs to CNs for the head was comparable in minnow and bitterling but was greater in gudgeon and ide. The SN‐to‐CN ratio for the trunk was greatest in bitterling. Polarization of hair cells in CNs was in the direction of the canal. Polarization of hair cells in SNs depended on body area. In cephalic SNs, hair cell polarization was dorso‐ventral or rostro‐caudal. In trunk SNs, it was rostro‐caudal on lateral line scales and dorso‐ventral on other trunk scales. On the caudal fin, hair cell polarization was rostro‐caudal. The data show that, in the four species studied here, number, distribution, and orientation of CNs and SNs cannot be unequivocally related to habitat. J. Morphol. 275:357–370, 2014. © 2013 Wiley Periodicals, Inc.
ISSN:0362-2525
1097-4687
DOI:10.1002/jmor.20219