Small increases in group size improve small shoals' response to water flow in zebrafish

2021 ◽  
Author(s):  
P. S. Suriyampola ◽  
A. A. Iruri‐Tucker ◽  
L. Padilla‐Veléz ◽  
A. Enriquez ◽  
D. S. Shelton ◽  
...  
Keyword(s):  
Water Flow ◽  
Group Size ◽  
Response To Water

Responses of anterior lateral line afferent neurones to water flow

2000 ◽  
Vol 203 (16) ◽  
pp. 2495-2502 ◽  
Author(s):  
R. Voigt ◽  
A.G. Carton ◽  
J.C. Montgomery
Keyword(s):  
Water Flow ◽  
Lateral Line ◽  
Cell Receptor ◽  
Lateral Line System ◽  
Line System ◽  
Water Currents ◽  
Absolute Flow ◽  
Hydrodynamic Stimuli ◽  
Lateral Line Afferents ◽  
Response To Water

The mechanoreceptive lateral line system detects hydrodynamic stimuli and plays an important role in a number of types of fish behaviour, including orientation to water currents. The lateral line is composed of hair cell receptor organs called neuromasts that occur as superficial neuromasts on the surface of the skin or canal neuromasts located in subepidermal canals. Both are innervated by primary afferents of the lateral line nerves. Although there have been extensive studies of the response properties of lateral line afferents to vibrating sources, their response to water flow has not been reported. In this study, we recorded extracellularly from anterior lateral line afferents in the New Zealand long-fin eel Anguilla dieffenbachii while stimulating the eel with unidirectional water flows at 0.5-4 cm s(−)(1). Of the afferents, 80 % were flow-sensitive to varying degrees, the response magnitude increasing with flow rate. Flow-sensitive fibres gave non-adapting tonic responses, indicating that these fibres detect absolute flow velocity. Further studies are needed to confirm whether flow-sensitive and flow-insensitive fibres correlate with superficial and canal neuromasts, respectively.

scholarly journals Morphological change and phenotypic plasticity in response to water velocity in three species of Centrarchidae

2015 ◽  
Vol 93 (11) ◽  
pp. 879-888 ◽  
Author(s):  
A.E. Istead ◽  
S. Yavno ◽  
M.G. Fox
Keyword(s):  
Phenotypic Plasticity ◽  
Water Flow ◽  
Morphological Changes ◽  
Lepomis Macrochirus ◽  
Lepomis Gibbosus ◽  
Rock Bass ◽  
Morphological Responses ◽  
Species Specific ◽  
Static Conditions ◽  
Response To Water

Morphological responses to flowing water have been documented in many fishes, but rarely reported in species with gibbose body types, despite their use of riffles in rivers and streams. In this study, we compared morphological responses to water flow in three gibbose centrarchids: bluegill (Lepomis macrochirus Rafinesque, 1819), pumpkinseed (Lepomis gibbosus (L., 1758)), and rock bass (Ambloplites rupestris (Rafinesque, 1817)). Flow-through plexiglass units, set to either a sustained flow or static conditions, were used to rear juveniles from each species for an 80-day period. All three species developed more streamlined body forms, longer and thinner caudal peduncles, and longer pectoral fins when reared in sustained current. Pumpkinseed exhibited the highest level of phenotypic plasticity in response to water flow, followed closely by bluegill; rock bass was the least plastic species. Rock bass developed longer predorsal and prepectoral lengths, which differ from the morphological changes observed in bluegill and pumpkinseed. The findings not only suggest that some gibbose fishes are capable of exhibiting strong phenotypic responses to water flow, but that many morphological changes are species specific, even within the same taxonomic family. Lastly, all three species developed shorter dorsal fin base lengths when reared under flowing condition, which differs from some previously documented work on fusiform fishes. The results of this study provide a better understanding of how morphology in three closely related species varies in response to environmental conditions.

Movements of Young Colorado Pikeminnow and Razorback Sucker in Response to Water Flow and Light Level

2000 ◽  
Vol 15 (4) ◽  
pp. 525-535 ◽  
Author(s):  
Harold M. Tyus ◽  
Caryl W. Brown ◽  
James F. Saunders
Keyword(s):  
Water Flow ◽  
Light Level ◽  
Response To Water

Effect of verapamil on cytoplasmic distribution of granules and microfilaments in amphibian urinary bladder

1988 ◽  
Vol 46 ◽  
pp. 324-325
Author(s):  
A.J. Mia ◽  
L.X. Oakford ◽  
T. Yorio
Keyword(s):  
Urinary Bladder ◽  
Water Flow ◽  
Morphological Changes ◽  
Granular Cell ◽  
Cytosolic Calcium ◽  
Calcium Storage ◽  
Amphibian Urinary Bladder ◽  
Vesicular Membrane ◽  
High Concentrations ◽  
Cytoskeletal System

The amphibian urinary bladder has been used as a ‘model’ system for studies of the mechanism of action of antidiuretic hormone (ADH) in stimulating transepithelial water flow. The increase in water permeability is accompanied by morphological changes that include the stimulation of apical microvilli, mobilization of microtubules and microfilaments and vesicular membrane fusion events . It has been shown that alterations in the cytosolic calcium concentrations can inhibit ADH transmembrane water flow and induce alterations in the epithelial cell cytomorphology, including the cytoskeletal system . Recently, the subapical granules of the granular cell in the amphibian urinary bladder have been shown to contain high concentrations of calcium, and it was suggested that these cytoplasmic constituents may act as calcium storage sites for intracellular calcium homeostasis. The present study utilizes the calcium antagonist, verapamil, to examine the effect of calcium deprivation on the cytomorphological features of epithelial cells from amphibian urinary bladder, with particular emphasis on subapical granule and microfilament distribution.

An ecological basis for large group size in Colobus angolensis in the Nyungwe Forest, Rwanda

2001 ◽  
Vol 39 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Cheryl Fimbel ◽  
Amy Vedder ◽  
Ellen Dierenfeld ◽  
Felix Mulindahabi
Keyword(s):  
Group Size ◽  
Large Group ◽  
Colobus Angolensis ◽  
Ecological Basis
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