Transient integumentary structures in Boana riojana (Anura, Hylidae) tadpoles

2019 ◽  
Vol 40 (4) ◽  
pp. 543-549 ◽  
Author(s):  
Silvia Inés Quinzio ◽  
Javier Goldberg
Keyword(s):  
Lateral Line ◽  
Lateral Line System ◽  
Ciliated Cells ◽  
Oral Disc ◽  
Line System ◽  
System A ◽  
New Information ◽  
Lateral Lines ◽  
Skin Morphology ◽  
Tadpole Skin

Abstract Few studies focusing on embryos and/or tadpole skin morphology have described sensory transient organs whose morphological variation could indicate some taxonomical or functional correlations. We explore here some integumentary features of Boana riojana larvae that are rarely mentioned in tadpole descriptions. We provide histomorphological and SEM descriptions of the lateral line system, a series of evenly distributed unpigmented spots, and some symmetrical paired structures dorsal to the oral disc. The latter are previously unreported in any tadpole. Our descriptions reveal that the: 1) the number of lateral lines resembles those for most tadpoles, but with an unusual arrangement of stitches; 2) paired lateral spots are formed by ciliated cells dispersed in clusters unrelated to the lateral line system; and 3) upper-lip related structures are histomorphologically similar to the unpigmented spots. We discuss and suggest that integumentary transient structures in B. riojana represent traits that should be taken into account when describing tadpoles. This new information may help diagnose species and advance our understanding of tadpole ecomorphology and evolution.

scholarly journals Diversity of lateral line patterns and neuromast numbers in the genus Oryzias

2021 ◽  
Vol 224 (24) ◽  
Author(s):  
Ali Seleit ◽  
Satoshi Ansai ◽  
Kazunori Yamahira ◽  
Kawilarang W. A. Masengi ◽  
Kiyoshi Naruse ◽  
...  
Keyword(s):  
Lateral Line ◽  
Strong Dependence ◽  
Lateral Line System ◽  
Cluster Number ◽  
Line System ◽  
Posterior Lateral Line ◽  
Polygenic Control ◽  
Lateral Lines ◽  
Rapid Diversification ◽  
Line Patterns

ABSTRACT A remarkable diversity of lateral line patterns exists in adult teleost fishes, the basis of which is largely unknown. By analysing the lateral line patterns and organ numbers in 29 Oryzias species and strains we report a rapid diversification of the lateral line system within this genus. We show a strong dependence of lateral line elaboration (number of neuromasts per cluster, number of parallel lateral lines) on adult species body size irrespective of phylogenetic relationships. In addition, we report that the degree of elaboration of the anterior lateral line, posterior lateral line and caudal neuromast clusters is tightly linked within species, arguing for a globally coordinated mechanism controlling lateral line organ numbers and patterns. We provide evidence for a polygenic control over neuromast numbers and positioning in the genus Oryzias. Our data also indicate that the diversity in lateral lines can arise as a result of differences in patterning both during embryonic development and post-embryonically, where simpler embryonic patterns generate less complex adult patterns and organ numbers, arguing for a linkage between the two processes.

Bionic Research and it’s Application of Artificial Lateral Line System

2014 ◽  
Vol 602-605 ◽  
pp. 1503-1507
Author(s):  
Gui Jie Liu ◽  
Hua Yao Gong ◽  
Ru Yan ◽  
Wen Fang Gao
Keyword(s):  
Lateral Line ◽  
Navigation System ◽  
New Technology ◽  
Future Research ◽  
Lateral Line System ◽  
Line System ◽  
Great Ability ◽  
Lateral Lines ◽  
Potential Applications ◽  
Acoustic Navigation

Nowadays, lots of efforts have been made to develop new technology for navigation system of underwater vehicle with the increasingly improved requirements of precise positioning, obstacles-avoidance, energy-saving in locomotion and stabilization in response to turbulent currents. In nature, fish have a great ability to localize prey, school, navigate, rheotaxis, etc. using the lateral-line organ. The biological lateral line system has inspired the researchers’ efforts to artificial lateral lines for applications in underwater vehicles and robots. In this paper, the working mechanism of the fish lateral line system has been described. Then the research status both at biology and at mechanics on the artificial lateral line system at home and abroad has been reviewed. To make a comparison with acoustic navigation system USBL,The key technologies and developing tendency as well as potential applications are described. At last, an insight on the future research directions and route of artificial lateral-line system have been given.

Lateral line stimuli can override vision to determine sunfish strike trajectory

1993 ◽  
Vol 176 (1) ◽  
pp. 299-305 ◽  
Author(s):  
J Janssen ◽  
J Corcoran
Keyword(s):  
Water Flow ◽  
Lateral Line ◽  
Active Species ◽  
Unconditioned Response ◽  
Lateral Line System ◽  
Line System ◽  
System A

Although all fishes have a mechanosensory lateral line system — a system of water flow detectors (neuromasts) in canals or free on the skin’s surface — particular behavioral functions are documented for only a few species. Work on lateral line use for feeding has focused on either cavefishes or night-active species (Montgomery, 1989). While surface-feeding fishes with well-developed eyes do use the lateral line to locate prey (Müller and Schwartz, 1982), it is generally assumed that diurnal/crepuscular fishes are visual predators. We show that a hydromechanical stimulus detected by the cephalic lateral line system in two sunfishes (Centrarchidae) can be the sole determinant of a strike trajectory. The response occurs without reinforcement and appears to be an unconditioned response.

scholarly journals Frequency response properties of primary afferent neurons in the posterior lateral line system of larval zebrafish

2015 ◽  
Vol 113 (2) ◽  
pp. 657-668 ◽  
Author(s):  
Rafael Levi ◽  
Otar Akanyeti ◽  
Aleksander Ballo ◽  
James C. Liao
Keyword(s):  
Lateral Line ◽  
Sine Wave ◽  
Afferent Neuron ◽  
Lateral Line System ◽  
Afferent Neurons ◽  
Primary Afferent Neurons ◽  
Primary Afferent ◽  
Line System ◽  
Response Properties ◽  
Larval Zebrafish

The ability of fishes to detect water flow with the neuromasts of their lateral line system depends on the physiology of afferent neurons as well as the hydrodynamic environment. Using larval zebrafish ( Danio rerio), we measured the basic response properties of primary afferent neurons to mechanical deflections of individual superficial neuromasts. We used two types of stimulation protocols. First, we used sine wave stimulation to characterize the response properties of the afferent neurons. The average frequency-response curve was flat across stimulation frequencies between 0 and 100 Hz, matching the filtering properties of a displacement detector. Spike rate increased asymptotically with frequency, and phase locking was maximal between 10 and 60 Hz. Second, we used pulse train stimulation to analyze the maximum spike rate capabilities. We found that afferent neurons could generate up to 80 spikes/s and could follow a pulse train stimulation rate of up to 40 pulses/s in a reliable and precise manner. Both sine wave and pulse stimulation protocols indicate that an afferent neuron can maintain their evoked activity for longer durations at low stimulation frequencies than at high frequencies. We found one type of afferent neuron based on spontaneous activity patterns and discovered a correlation between the level of spontaneous and evoked activity. Overall, our results establish the baseline response properties of lateral line primary afferent neurons in larval zebrafish, which is a crucial step in understanding how vertebrate mechanoreceptive systems sense and subsequently process information from the environment.

scholarly journals Diversity and sexual dimorphism in the head lateral line system in North Sea populations of threespine sticklebacks, Gasterosteus aculeatus (Teleostei: Gasterosteidae)

Zoomorphology ◽  
2020 ◽  
Author(s):  
Harald Ahnelt ◽  
David Ramler ◽  
Maria Ø. Madsen ◽  
Lasse F. Jensen ◽  
Sonja Windhager
Keyword(s):  
Sexual Dimorphism ◽  
North Sea ◽  
Lateral Line ◽  
Gasterosteus Aculeatus ◽  
Sensory System ◽  
Threespine Stickleback ◽  
Lateral Line System ◽  
Line System ◽  
Marine Population ◽  
Threespine Sticklebacks

AbstractThe mechanosensory lateral line of fishes is a flow sensing system and supports a number of behaviors, e.g. prey detection, schooling or position holding in water currents. Differences in the neuromast pattern of this sensory system reflect adaptation to divergent ecological constraints. The threespine stickleback, Gasterosteus aculeatus, is known for its ecological plasticity resulting in three major ecotypes, a marine type, a migrating anadromous type and a resident freshwater type. We provide the first comparative study of the pattern of the head lateral line system of North Sea populations representing these three ecotypes including a brackish spawning population. We found no distinct difference in the pattern of the head lateral line system between the three ecotypes but significant differences in neuromast numbers. The anadromous and the brackish populations had distinctly less neuromasts than their freshwater and marine conspecifics. This difference in neuromast number between marine and anadromous threespine stickleback points to differences in swimming behavior. We also found sexual dimorphism in neuromast number with males having more neuromasts than females in the anadromous, brackish and the freshwater populations. But no such dimorphism occurred in the marine population. Our results suggest that the head lateral line of the three ecotypes is under divergent hydrodynamic constraints. Additionally, sexual dimorphism points to divergent niche partitioning of males and females in the anadromous and freshwater but not in the marine populations. Our findings imply careful sampling as an important prerequisite to discern especially between anadromous and marine threespine sticklebacks.

Larval lampreys possess a functional lateral line system

2006 ◽  
Vol 193 (2) ◽  
pp. 271-277 ◽  
Author(s):  
S. Gelman ◽  
A. Ayali ◽  
E. D. Tytell ◽  
A. H. Cohen
Keyword(s):  
Lateral Line ◽  
Lateral Line System ◽  
Line System
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