The dorso‐lateral pit organs of the Port Jackson shark contribute sensory information for rheotaxis

Peach, Meredith B.

doi:10.1111/j.1095-8649.2001.tb02373.x

Cited by 23 publications

(24 citation statements)

References 15 publications

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“…In addition, Arnold (Arnold, 1969) provides some evidence that benthic flatfish (Pleuronectes platessa) also rely on lateral line information, as rheotactic responses were observed in the dark at flow speeds that did not displace the fish downstream. Similarly, epaulette sharks (Hemiscyllium ocellatum) exhibit rheotaxis when they are located on the benthos, but not when they are higher in the water column (Peach, 2001). Finally, our blind cavefish results are consistent with the absence of lateral line effects observed in other species with non-sedentary behaviors, such as the surface-dwelling giant danio (Bak-Coleman et al, 2013).…”

Section: Comparisons With Other Speciesmentioning

confidence: 99%

Sedentary behavior as a factor in determining lateral line contributions to rheotaxis

Bak-Coleman

Coombs

2014

Journal of Experimental Biology

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Rheotaxis is a robust, multisensory behavior with many potential benefits for fish and other aquatic animals. Visual (optic flow) cues appear to be sufficient for rheotaxis, but other sensory cues can clearly compensate for the loss of vision. The role of various nonvisual sensory systems, in particular the flow-sensing lateral line, is poorly understood, largely because of widely varying methods and sensory conditions for studying rheotaxis. Here, we examine how sedentary behavior under visually deprived conditions affects the relative importance of lateral line cues in two species: one that is normally sedentary (the three-lined corydoras, Corydoras trilineatus) and one that normally swims continuously along the substrate (the blind cavefish, Astyanax mexicanus). No effect of lateral line disruption on rheotactic performance was found in blind cavefish, which were significantly more mobile than three-lined corydoras. By contrast, rheotaxis was significantly impaired at low, but not high, flow speeds in lateral-line-disabled corydoras. In addition, lateral-lineenabled corydoras were characterized by decreased mobility and increased rheotactic performance relative to lateral-line-disabled fish. Taken together, these results suggest that sedentary behavior is an important factor in promoting reliance on lateral line cues.

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Section: Comparisons With Other Speciesmentioning

confidence: 99%

Sedentary behavior as a factor in determining lateral line contributions to rheotaxis

Bak-Coleman

Coombs

2014

Journal of Experimental Biology

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“…2). Their identity as lateral line organs was only recently confirmed by morphological and behavioral studies (Peach and Rouse, 2000;Peach, 2001).…”

Section: Introductionmentioning

confidence: 93%

The comparative morphology of pit organs in elasmobranchs

Peach

Marshall

2009

Journal of Morphology

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The pit organs of elasmobranchs (sharks, skates and rays) are free neuromasts of the mechanosensory lateral line system. Pit organs, however, appear to have some structural differences from the free neuromasts of bony fishes and amphibians. In this study, the morphology of pit organs was investigated by scanning electron microscopy in six shark and three ray species. In each species, pit organs contained typical lateral line hair cells with apical stereovilli of different lengths arranged in an "organ-pipe" configuration. Supporting cells also bore numerous apical microvilli taller than those observed in other vertebrate lateral line organs. Pit organs were either covered by overlapping denticles, located in open grooves bordered by denticles, or in grooves without associated denticles. The possible functional implications of these morphological features, including modification of water flow and sensory filtering properties, are discussed.

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“…These studies indicated that among teleosts there is a diverse set of morphological features and distribution patterns [e.g., Münz, 1979Münz, , 1989Coombs et al, 1989;Song and Northcutt, 1991;Coombs and Montgomery, 1994]. Similar assertions could be described for non-teleost fishes [Webb and Northcutt, 1997;Maruska and Tricas, 1998;Maruska, 2001;Peach, 2001Peach, , 2003. Few data are available for the sea bass lateral line system [Diaz et al, 2003;Faucher et al, 2003].…”

Section: Introductionmentioning

confidence: 94%

Quantitative Aspects of the Spatial Distribution and Morphological Characteristics of the Sea Bass (<i>Dicentrarchus labrax </i>L.; Teleostei, Serranidae) Trunk Lateral Line Neuromasts

Faucher

Lagardère²,

Aubert³

2005

Brain Behav Evol

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The results presented herein report quantitative data relative to the distribution and morphological characteristics of both types of neuromasts encountered on the trunk lateral line of the sea bass (Dicentrarchus labrax, L.). These data were obtained from scanning electron micrographs. They indicate that, as expected, each modified scale of the sea bass possessed a single canal neuromast with long axis oriented parallel to the fish’s long axis. In contrast to several fish species, two thirds of superficial neuromasts observed herein were oriented perpendicular to the fish’s long axis. However, whatever the main orientation of superficial neuromasts, two thirds of their hair bundles were oriented parallel to the long axis of the animal with approximately half of them in the direction of the head. Similar ratios were observed for canal neuromasts whatever the area of the maculae: central or peripheral. For both types of neuromasts it was not possible to clearly distinguish a paired organization of hair bundles with opposing polarities. Superficial neuromasts on each trunk canal scale were located on either the dorsal or ventral side of the canal and appeared to be distributed along the trunk lateral line with a higher probability to be encountered closer to the operculum. The frequency of presence and the average number of superficial neuromasts per scale increased with fish size. We observed a size gradient for canal neuromasts between the operculum and caudal peduncle. This gradation was correlated with a reduction of the width of the central area of the canal segment. Canal neuromasts were always localized in the larger portions of the canal segments. Taken together, these results point out some specific features associated with the sea bass trunk lateral line. With the previous report, they establish the first full description of the trunk lateral line of sea bass and will be useful for upcoming experiments regarding the function of the two types of neuromasts.

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The dorso‐lateral pit organs of the Port Jackson shark contribute sensory information for rheotaxis

Cited by 23 publications

References 15 publications

Sedentary behavior as a factor in determining lateral line contributions to rheotaxis

Sedentary behavior as a factor in determining lateral line contributions to rheotaxis

The comparative morphology of pit organs in elasmobranchs

Quantitative Aspects of the Spatial Distribution and Morphological Characteristics of the Sea Bass (<i>Dicentrarchus labrax </i>L.; Teleostei, Serranidae) Trunk Lateral Line Neuromasts

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