Review of the genus Taurotettix Haupt, 1929 (Homoptera: Cicadellidae: Deltocephalinae: Cicadulini): morphology, acoustic signals, and geographical variability

Zootaxa ◽  
2021 ◽  
Vol 5082 (2) ◽  
pp. 191-199
Author(s):  
DMITRI YU. TISHECHKIN
Keyword(s):  
Acoustic Signals ◽  
C Elegans ◽  
Geographical Variability ◽  
Male Calling

The leafhopper genus Taurotettix includes two subgenera, Taurotettix (Taurotettix) and Taurotettix (Callistrophia), and three species, T. (T.) beckeri (Fieber, 1885), T. (C.) modesta (Mityaev, 1971), and T. (C.) elegans (Melichar, 1900). T. (C.) elegans is subdivided into two subspecies, T. (C.) elegans elegans and T. (C.) elegans subornata (Mityaev, 1971) stat. nov. Illustrated descriptions and data on biology and distribution for all taxa are given. Oscillograms of male calling signals of T. (T.) beckeri, T. (C.) modesta, and T. (C.) elegans elegans are provided. A hypothesis about speciation in Taurotettix (Callistrophia) is presented.  

Geographical variability of Lepyronia coleoptrata (Linnaeus, 1758) (Hemiptera: Cercopoidea) across Russia

Zootaxa ◽  
2019 ◽  
Vol 4543 (3) ◽  
pp. 401
Author(s):  
DMITRI YU. TISHECHKIN
Keyword(s):  
Body Size ◽  
Russian Far East ◽  
Far East ◽  
Intraspecific Variability ◽  
Geographical Variability ◽  
Interspecific Differences ◽  
The Far East ◽  
Male Calling ◽  
Far Eastern ◽  
The Russian Far East

Comparative analysis of body size, coloration, penis shape, and male calling signals of Lepyronia coleoptrata from different localities in European Russia, Northern Kazakhstan, Siberia, and the Russian Far East showed that all populations studied belong to the same species. A clear boundary between European and the Far-Eastern subspecies can only be drawn based on body size and proportions. Light coloration is typical of European populations; on the contrary, in the Far East only dark specimens occur, but in Siberia a mixture of different forms presents. Penis shape and male calling signal pattern do not demonstrate geographical variability. The range of intraspecific variability of these traits is far less than interspecific differences between L. coleoptrata, L. koreana, and L. okadae. 

scholarly journals Isophya sicula sp. n. (Orthoptera: Tettigonioidea), a new, morphologically cryptic bush-cricket species from the Eastern Carpathians (Romania) recognized from its peculiar male calling song

Zootaxa ◽  
2010 ◽  
Vol 2627 (1) ◽  
pp. 57 ◽  
Author(s):  
KIRILL MÁRK ORCI ◽  
GERGELY SZÖVÉNYI ◽  
BARNABÁS NAGY
Keyword(s):  
Acoustic Signals ◽  
Pair Formation ◽  
Descriptive Statistics ◽  
Calling Song ◽  
Syllable Type ◽  
Morphometric Characters ◽  
Female Response ◽  
Eastern Carpathians ◽  
Male Calling ◽  
Bush Cricket

The morphology and pair-forming acoustic signals of Isophya sicula sp. n., a new phaneropterine bush-cricket species from the Eastern Carpathians (Romania) is described. The species is morphologically similar to I. posthumoidalis and I. camptoxypha, but the male calling song differs clearly from the songs of those species. The male calling song is a long series of evenly repeated, very short syllables. Syllables are much shorter than in I. camptoxypha, and the song is composed from only one syllable type differently from I. posthumoidalis, where the male calling song is composed of two syllable types. Pair formation is achieved during an acoustic duet. The delay of female response (40–70 ms) is shorter than in I. camptoxypha and I. posthumoidalis. Basic descriptive statistics of sonometric and morphometric characters of the new species as well as SEM photos of the male stridulatory file and female stridulatory bristles are presented.

scholarly journals Hearing is not necessarily believing in nocturnal anurans

2010 ◽  
Vol 6 (5) ◽  
pp. 633-635 ◽  
Author(s):  
Christina Richardson ◽  
Doris Gomez ◽  
Romain Durieux ◽  
Marc Théry ◽  
Pierre Joly ◽  
...  
Keyword(s):  
Mate Choice ◽  
Individual Variation ◽  
Visual Cues ◽  
Acoustic Signals ◽  
Female Preference ◽  
Hyla Arborea ◽  
Male Calling ◽  
Tree Frogs ◽  
Communication Modalities

The recent discovery of the use of visual cues for mate choice by nocturnal acoustic species raises the important, and to date unaddressed, question of how these signals affect the outcome of mate choice predicted by female preference for male calls. In order to address this question, we presented female Hyla arborea tree frogs with a series of choices between combinations of acoustic and visual cues of varying quality in nocturnal conditions. While females exhibited the expected preference for a combination of attractive values for visual and acoustic signals over combinations of unattractive values for both signals, when presented with conflicting acoustic and visual cues, they equally adopted one of two strategies, preferring either attractive calls or intense vocal sac coloration. This constitutes novel evidence that the outcome of mate choice, as predicted on the basis of male calling quality, can be drastically different when additional communication modalities—in this case vision—are taken into account. These results also highlight the possible existence of individual variation in female rules for cue prioritization. The implications of these results for the study of mate choice in nocturnal acoustic species are discussed.

scholarly journals Isophya nagyi, a new phaneropterid bush-cricket (Orthoptera: Tettigonioidea) from the Eastern Carpathians (Caliman Mountains, North Romania)

Zootaxa ◽  
2012 ◽  
Vol 3521 (1) ◽  
pp. 67 ◽  
Author(s):  
GERGELY SZÖVÉNYI ◽  
GELLÉRT PUSKÁS ◽  
KIRILL MÁRK ORCI
Keyword(s):  
New Species ◽  
Acoustic Signals ◽  
Species Group ◽  
The Other ◽  
Calling Song ◽  
Rhythmic Pattern ◽  
Group I ◽  
Eastern Carpathians ◽  
Male Calling ◽  
Bush Cricket

This study describes Isophya nagyi sp. n. from the Caliman Mountains (Eastern Carpathians, Romania). This species wasdiscovered on the basis of the special rhythmic pattern of its male calling song. Regarding morphology Isophya nagyi issimilar to the species of the Isophya camptoxypha species-group (I. ciucasi, I. sicula, I. posthumoidalis, I. camptoxypha),however the male stridulatory file contains more stridulatory pegs (105–130) compared to the other members of thespecies group (50–80 pegs). Calling males produce a long sequence of evenly repeated syllables (repetition rate variesbetween 60–80 syllables at 21–24o C), and most importantly syllables are composed of three characteristic impulse groupscontrary to songs of the other species where syllables are composed of two elements or the song consists of two syllabletypes. Besides the description of the basic morphological features and pair-forming acoustic signals of the new species, a calling song based key is given for the I. camptoxypha species group.

The glycomes of Caenorhabditis elegans and other model organisms

2002 ◽  
Vol 69 ◽  
pp. 117-134 ◽  
Author(s):  
Stuart M. Haslam ◽  
David Gems ◽  
Howard R. Morris ◽  
Anne Dell
Keyword(s):  
Caenorhabditis Elegans ◽  
Current Knowledge ◽  
Structural Data ◽  
Model Organisms ◽  
Entire Genome ◽  
C Elegans ◽  
The Face ◽  
Area Of Concern ◽  
Nematode Worm

There is no doubt that the immense amount of information that is being generated by the initial sequencing and secondary interrogation of various genomes will change the face of glycobiological research. However, a major area of concern is that detailed structural knowledge of the ultimate products of genes that are identified as being involved in glycoconjugate biosynthesis is still limited. This is illustrated clearly by the nematode worm Caenorhabditis elegans, which was the first multicellular organism to have its entire genome sequenced. To date, only limited structural data on the glycosylated molecules of this organism have been reported. Our laboratory is addressing this problem by performing detailed MS structural characterization of the N-linked glycans of C. elegans; high-mannose structures dominate, with only minor amounts of complex-type structures. Novel, highly fucosylated truncated structures are also present which are difucosylated on the proximal N-acetylglucosamine of the chitobiose core as well as containing unusual Fucα1–2Gal1–2Man as peripheral structures. The implications of these results in terms of the identification of ligands for genomically predicted lectins and potential glycosyltransferases are discussed in this chapter. Current knowledge on the glycomes of other model organisms such as Dictyostelium discoideum, Saccharomyces cerevisiae and Drosophila melanogaster is also discussed briefly.

How do histone modifications contribute to transgenerational epigenetic inheritance in C. elegans?

2020 ◽  
Vol 48 (3) ◽  
pp. 1019-1034 ◽  
Author(s):  
Rachel M. Woodhouse ◽  
Alyson Ashe
Keyword(s):  
Histone Modifications ◽  
Molecular Mechanisms ◽  
Epigenetic Inheritance ◽  
Nematode Caenorhabditis Elegans ◽  
Histone Methyltransferases ◽  
Transgenerational Epigenetic Inheritance ◽  
C Elegans ◽  
Recent Developments ◽  
Gene Regulatory

Gene regulatory information can be inherited between generations in a phenomenon termed transgenerational epigenetic inheritance (TEI). While examples of TEI in many animals accumulate, the nematode Caenorhabditis elegans has proven particularly useful in investigating the underlying molecular mechanisms of this phenomenon. In C. elegans and other animals, the modification of histone proteins has emerged as a potential carrier and effector of transgenerational epigenetic information. In this review, we explore the contribution of histone modifications to TEI in C. elegans. We describe the role of repressive histone marks, histone methyltransferases, and associated chromatin factors in heritable gene silencing, and discuss recent developments and unanswered questions in how these factors integrate with other known TEI mechanisms. We also review the transgenerational effects of the manipulation of histone modifications on germline health and longevity.

Centrosome Aurora A gradient ensures single polarity axis in C. elegans embryos

2020 ◽  
Vol 48 (3) ◽  
pp. 1243-1253 ◽  
Author(s):  
Sukriti Kapoor ◽  
Sachin Kotak
Keyword(s):  
Symmetry Breaking ◽  
Cell Fate ◽  
Cell Cortex ◽  
Axis Formation ◽  
Aurora A Kinase ◽  
Aurora A ◽  
C Elegans ◽  
Cell Embryo ◽  
Polarity Establishment

Cellular asymmetries are vital for generating cell fate diversity during development and in stem cells. In the newly fertilized Caenorhabditis elegans embryo, centrosomes are responsible for polarity establishment, i.e. anterior–posterior body axis formation. The signal for polarity originates from the centrosomes and is transmitted to the cell cortex, where it disassembles the actomyosin network. This event leads to symmetry breaking and the establishment of distinct domains of evolutionarily conserved PAR proteins. However, the identity of an essential component that localizes to the centrosomes and promotes symmetry breaking was unknown. Recent work has uncovered that the loss of Aurora A kinase (AIR-1 in C. elegans and hereafter referred to as Aurora A) in the one-cell embryo disrupts stereotypical actomyosin-based cortical flows that occur at the time of polarity establishment. This misregulation of actomyosin flow dynamics results in the occurrence of two polarity axes. Notably, the role of Aurora A in ensuring a single polarity axis is independent of its well-established function in centrosome maturation. The mechanism by which Aurora A directs symmetry breaking is likely through direct regulation of Rho-dependent contractility. In this mini-review, we will discuss the unconventional role of Aurora A kinase in polarity establishment in C. elegans embryos and propose a refined model of centrosome-dependent symmetry breaking.

Behavioural assay for olfactory plasticity in C. elegans

2009 ◽  
Author(s):  
Takaaki Hirotsu ◽  
Yu Hayashi ◽  
Ryo Iwata ◽  
Hirofumi Kunitomo ◽  
Eriko Kage-Nakadai ◽  
...  
Keyword(s):  
C Elegans ◽  
Olfactory Plasticity

Die Rolle der Methylglyoxalsynthase bei der Pathogenese der diabetischen Polyneuropathie im Modell C. elegans

2010 ◽  
Vol 5 (03) ◽  
Author(s):  
M Pfeiffer ◽  
A Schlotterer ◽  
G Kukudov ◽  
T Fleming ◽  
A Bierhaus ◽  
...  
Keyword(s):  
C Elegans
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