Anatomy and Differential Growth of the Lateral Line System of the Mottled Sculpin, &lt;i&gt;Cottus bairdi &lt;/i&gt;(Scorpaeniformes: Cottidae)

Janssen, John; Coombs, Sheryl; Hoekstra, Dick; Platt, Christopher

doi:10.1159/000118647

Cited by 43 publications

(49 citation statements)

References 7 publications

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“…Neuromasts of 97 other shapes, such as the keel shape canal neuromasts of the Mottled sculpin, will also have an effect on the fluid-structure interaction within the subdermal canal. Janssen et al (1987) found that the superficial neuromasts of the Mottled sculpin where similar in shape to other clupeids, having a base less than 100 µm in diameter, and with stereocilia (2-3 µm long) and kinocilium (5-10 µm long) like the hair cells of the canal neuromasts. They consist of far fewer hair cells than found in the canal neuromasts, and the epidermal tissue that surrounds it can get scarred and obscure the cilia.…”

Section: Canal Neuromastsmentioning

confidence: 73%

“…The lateral line system of the Mottled Sculpin, as presented in the work of Janssen et al (1987), is shown in figure 3-2. The drawing shows the arrangement and orientation of both canal and superficial neuromasts.…”

Section: The Lateral Line System Of Fishmentioning

confidence: 99%

“…Each neuromast contains many ciliary bundles (see figure 3-3). Janssen et al (1987) found that the canal neuromasts of the Mottled Sculpin have its sensory strip of hair cells surrounded by mantle cells, so that the ciliary bundles rest within a trough. The cupula that covers the neuromast is keel shaped, with its largest extension above the sensory strip and reaching to the top of the canal.…”

Section: Canal Neuromastsmentioning

confidence: 99%

“…Trying to calculate a transition frequency and resonance number for the Mottled sculpin would not be appropriate at this time. For the Mottled Sculpin, the keelshaped cupula has similar length and width portions as the sensory strip (see figure 3-3), and extends to roughly the top canal which has a cross-sectional area of about 9 mm 2 (Janssen et al, 1987). Modeling the cupula of the sculpin is dealt with specifically in section 3.1.3.…”

Section: Canal Neuromastsmentioning

confidence: 99%

“…Even in adults there can be a range of neuromast sizes based on their particular body location (Janssen et al, 1987).…”

Section: Superficial Neuromastsmentioning

confidence: 99%

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CFD study of hydrodynamic signal perception by fish using the lateral line system

Rapo¹

2009

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The lateral line system on fish has been found to aid in schooling behavior, courtship communication, active and passive hydrodynamic imaging, and prey detection. The most widely used artificial prey stimulus has been the vibrating sphere, which some fish are able to detect even when the signal velocities to its lateral line are orders of magnitude smaller than background current velocities. It is not clear how the fish are able to extract this signal. This thesis uses a series of computational fluid dynamic (CFD) simulations, matched with recent experiments, to quantify the effects of 3D fish body parts on the received dipole signals, and to determine signal detection abilities of the lateral line system in background flow conditions. An approximation is developed for the dipole induced, oscillatory, boundary layer velocity profile over the surface of a fish. An analytic solution is developed for the case when the surface is a wall, and is accurate at points of maximal surface tangential velocity. Results indicate that the flow outside a thin viscous layer remains potential in nature, and that body parts, such as fins, do not significantly affect the received dipole signal in still water conditions. In addition, the canal lateral line system of the sculpin is shown to be over 100 times more sensitive than the superficial lateral line system to high frequency dipole stimuli.Analytical models were developed for the Mottled Sculpin canal and superficial neuromast motions, in response to hydrodynamic signals. When the background flow was laminar, the neuromast motions induced by the stimulus signal at threshold had a spectral peak larger than spectral peaks resulting from the background flow induced motions. When the turbulence level increased, the resulting induced neuromast motions had dominant low frequency oscillations. For fish using the signal encoding mechanisms of phase-locking or spike rate increasing, signal masking should occur.

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Section: Canal Neuromastsmentioning

confidence: 73%

Section: The Lateral Line System Of Fishmentioning

confidence: 99%

Section: Canal Neuromastsmentioning

confidence: 99%

Section: Canal Neuromastsmentioning

confidence: 99%

“…Even in adults there can be a range of neuromast sizes based on their particular body location (Janssen et al, 1987).…”

Section: Superficial Neuromastsmentioning

confidence: 99%

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CFD study of hydrodynamic signal perception by fish using the lateral line system

Rapo¹

2009

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Development of lateral line organs in leptocephali of the freshwater eel Anguilla japonica (Teleostei, Anguilliformes)

Okamura¹,

Oka²,

Yamada³

et al. 2002

Journal of Morphology

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A study of the ontogeny of the lateral line system in leptocephali of the Japanese eel Anguilla japonica reveals the existence of three morphologically different types of lateral line organs. Type I is a novel sensory organ with hair cells bearing a single kinocilium, lacking stereocilia, distributed mainly on the head of larvae, and morphologically different from typical superficial neuromasts of the lateral line system. Its developmental sequence suggests that it may be a presumptive canal neuromast. Type II is an ordinary superficial neuromast, common in other teleost larvae, which includes presumptive canal neuromasts that first appear on the trunk and accessory superficial neuromasts that later appear on the head and trunk. Type III is a very unusual neuromast located just behind the orbit, close to the otic vesicle, with radially oriented hair cells, suggesting that these serve as multiple axes of sensitivity for mechanical stimuli. The behavior of larval eels suggests that the radially oriented neuromasts may act as the sole mechanosensory organ until the ordinary superficial neuromasts develop. The finding that larval eels possess a well-developed mechanosensory system suggests the possibility that they are also capable of perceiving weak environmental mechanical stimuli, like other teleost larvae.

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Inter‐ and intraspecific variation in the distribution and number of pit organs (free neuromasts) of sharks and rays

Peach

2003

Journal of Morphology

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The distribution of pit organs (free neuromasts) has previously been documented for several species of pelagic sharks, but is relatively poorly known for rays and bottom-dwelling (demersal) sharks. In the present study, the complete distribution of pit organs was mapped in the demersal sharks Heterodontus portusjacksoni, Orectolobus maculatus, Hemiscyllium ocellatum, Chiloscyllium punctatum, and Asymbolus analis, and the rays Rhinobatos typus, Aptychotrema rostrata, Trygonorrhina sp. A, Raja sp. A, and Myliobatis australis. All of these species had pit organs scattered over the dorsolateral surface. The sharks also had "mandibular" pit organs (and "umbilical" pit organs in C. punctatum and A. analis) on the ventral surface, while pit organs were sparse or absent on the ventral surface of rays. All of the species examined here, except for M. australis, also had a "spiracular" group of pit organs adjacent to the eye and/or spiracle. Spiracular pit organs were also recorded for the sawshark Pristiophorus sp. A and the skate Pavoraja nitida, although the remainder of pit organs were not mapped in these species. The distribution and number of pit organs varied both within and among species. Pit organ distribution was asymmetrical in each individual examined, but no particular trend towards left or right "handedness" was observed in any species. Although rays have been thought to have fewer pit organs than sharks in general, this was not the case in the present study. All of the species examined here had few pit organs compared to the pelagic sharks previously documented, but it is not clear whether this is due to ecological or phylogenetic causes.

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Anatomy and Differential Growth of the Lateral Line System of the Mottled Sculpin, <i>Cottus bairdi </i>(Scorpaeniformes: Cottidae)

Cited by 43 publications

References 7 publications

CFD study of hydrodynamic signal perception by fish using the lateral line system

CFD study of hydrodynamic signal perception by fish using the lateral line system

Development of lateral line organs in leptocephali of the freshwater eel Anguilla japonica (Teleostei, Anguilliformes)

Inter‐ and intraspecific variation in the distribution and number of pit organs (free neuromasts) of sharks and rays

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