NO EVIDENCE FOR INBREEDING AVOIDANCE THROUGH POSTCOPULATORY MECHANISMS IN THE BLACK FIELD CRICKET, TELEOGRYLLUS COMMODUS

Evolution ◽  
2004 ◽  
Vol 58 (11) ◽  
pp. 2472 ◽  
Author(s):  
Michael D. Jennions ◽  
John Hunt ◽  
Russell Graham ◽  
Robert Brooks
Keyword(s):  
Inbreeding Avoidance ◽  
Field Cricket ◽  
Teleogryllus Commodus ◽  
Black Field

scholarly journals NO EVIDENCE FOR INBREEDING AVOIDANCE THROUGH POSTCOPULATORY MECHANISMS IN THE BLACK FIELD CRICKET, TELEOGRYLLUS COMMODUS

Evolution ◽  
2004 ◽  
Vol 58 (11) ◽  
pp. 2472-2477 ◽  
Author(s):  
Michael D. Jennions ◽  
John Hunt ◽  
Russell Graham ◽  
Robert Brooks
Keyword(s):  
Inbreeding Avoidance ◽  
Field Cricket ◽  
Teleogryllus Commodus ◽  
Black Field

The role of the foregut in digestion in the cricket Teleogryllus commodus and the locust Chortoicetes terminifera

2020 ◽  
Vol 68 (4) ◽  
pp. 212 ◽  
Author(s):  
ShangXian Zhou ◽  
James D. Woodman ◽  
Hua Chen ◽  
Paul D. Cooper
Keyword(s):  
Field Cricket ◽  
Passage Rate ◽  
Exterior Surface ◽  
Teleogryllus Commodus ◽  
Black Field ◽  
Food Particles ◽  
Generalist Diet ◽  
Cuticular Structures ◽  
Australian Plague Locust

The role of the foregut (crop and proventriculus) in mechanical processing of food has received little attention in insects. Using the Australian plague locust (Chortoicetes terminifera) and the black field cricket (Teleogryllus commodus) as models, the role of the crop in processing of wheat or rye grass was examined. Interior cuticular structures (spines) of the foregut were described using light and scanning electron microscopy, with locusts having sclerotised structures and crops of crickets being unsclerotised internally. Muscular bands on the exterior surface of the crop part of the foregut are similar in males of both species, but contractions and movements are more forceful in locusts. Passage rate from the foregut is much faster in locusts (<3 h) than in crickets (>3 h). Water within the crop is reduced compared with the water content of fresh grass within the foregut of locusts, but water is increased in cricket crops. Spines within the crops are small relative to the size of food particles in both species. Some spines of locusts contain metals. The slower passage rate from the crop of crickets may be limited by the proventriculus. Foregut structure and food processing facilitates the generalist diet of crickets, but may restrict locusts to consuming softer grasses.

scholarly journals Australian black field crickets show changes in neural gene expression associated with socially-induced morphological, life-history, and behavioral plasticity

2016 ◽  
Author(s):  
Michael Kasumovic ◽  
Zhiliang Chen ◽  
Marc R Wilkins
Keyword(s):  
Gene Expression ◽  
Life History ◽  
Developmental Plasticity ◽  
Developmental Trajectories ◽  
Field Cricket ◽  
Phenotypic Traits ◽  
Functional Relationships ◽  
Teleogryllus Commodus ◽  
Black Field ◽  
Insight Into

Background: Ecological and evolutionary model organisms have provided extensive insight into the ecological triggers, adaptive benefits, and evolution of life-history driven developmental plasticity. Despite this, we still have a poor understanding of the underlying genetic changes that occur during shifts towards different developmental trajectories. The goal of this study is to determine whether we can identify underlying gene expression patterns that can describe the different life-history trajectories individuals follow in response to social cues of competition. To do this, we use the Australian black field cricket (Teleogryllus commodus), a species with sex-specific developmental trajectories moderated by the density and quality of calls heard during immaturity. In this study, we manipulated the social information males and females could hear by rearing individuals in either calling or silent treatments. We next used RNA-Seq to develop a reference transcriptome to study changes in brain gene expression at two points prior to sexual maturation. Results: We show accelerated development in both sexes when exposed to calling; changes were also seen in growth, lifespan, and reproductive effort. Functional relationships between genes and phenotypes were apparent from ontological enrichment analysis. We demonstrate that increased phenotypic expression was often associated with the expression of a greater number of genes with similar effect, thus providing a suite of candidate genes for future research in this and other invertebrate organisms. Conclusions: Our results provide interesting insight into the genomic underpinnings of developmental plasticity. We highlight the relationship between genes of known effect and behavioral and phenotypic traits that are under strong sexual selection in Teleogryllus commodus. We also demonstrate the variation in suites of genes associated with different developmental trajectories. Our results provide the opportunity for a genomic exploration of other evolutionary theories such as condition dependence and sexual conflict.

Ultrastructural changes to the midgut of the black field cricket (Teleogryllus commodus) following ingestion of potato protease inhibitor II

2002 ◽  
Vol 48 (3) ◽  
pp. 327-336 ◽  
Author(s):  
P.W. Sutherland ◽  
E.P.J. Burgess ◽  
B.A. Philip ◽  
M.T. McManus ◽  
L. Watson ◽  
...  
Keyword(s):  
Protease Inhibitor ◽  
Field Cricket ◽  
Ultrastructural Changes ◽  
Teleogryllus Commodus ◽  
Black Field
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