Relevant bibliographies by topics / Mediterranean field crickets

Academic literature on the topic 'Mediterranean field crickets'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Mediterranean field crickets"

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Ferreira, M., and J. W. H. Ferguson. "Do Mediterranean crickets Gryllus bimaculatus De Geer (Orthoptera: Gryllidae) come from the Mediterranean? Largescale phylogeography and regional gene flow." Bulletin of Entomological Research 100, no. 1 (March 27, 2009): 49–58. http://dx.doi.org/10.1017/s0007485309006749.

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AbstractWe investigate the degree of between-population genetic differentiation in the Mediterranean field cricket Gryllus bimaculatus, as well as the possible causes of such differentiation. Using cytochrome b mtDNA sequences, we estimate genetic variation in G. bimaculatus from seven South African and two Mediterranean populations. Within-population genetic variation in Europe (two haplotypes, one unique to a single individual) suggest low effective population size and strong bottlenecks with associated founder effects, probably due to cold winter environments in Europe that limit reproduction to a short part of the summer. The likely cause for this is the daily maxima in winter temperatures that fall below the critical level of 16°C (enabling normal calling and courtship behaviour) in Mediterranean Europe, whereas the equivalent temperatures in southern Africa are above this limit and enable reproduction over a large part of the year. European genetic variants were either shared with Africa or closely related to African haplotypes. For survival, European populations are probably dependent on immigration from other areas, including Africa. South African populations have low but measurable gene flow with Europe and show significant between-population genetic differentiation (30 haplotypes). Isolation-by-distance is not sufficient to explain the degree of between-population genetic differences observed, and a large degree of dispersal is also required in order to account for the observed patterns. Differences in morphology and calling behaviour among these populations are underlied by these genetic differences.
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Santostefano, Francesca, Alastair J. Wilson, Petri T. Niemelä, and Niels J. Dingemanse. "Behavioural mediators of genetic life-history trade-offs: a test of the pace-of-life syndrome hypothesis in field crickets." Proceedings of the Royal Society B: Biological Sciences 284, no. 1864 (October 4, 2017): 20171567. http://dx.doi.org/10.1098/rspb.2017.1567.

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The pace-of-life syndrome (POLS) hypothesis predicts associations between life history and ‘risky’ behaviours. Individuals with ‘fast’ lifestyles should develop faster, reproduce earlier, exhibit more risk-prone behaviours, and die sooner than those with ‘slow’ lifestyles. While support for POLS has been equivocal to date, studies have relied on individual-level (phenotypic) patterns in which genetic trade-offs may be masked by environmental effects on phenotypes. We estimated genetic correlations between life history (development, lifespan, size) and risky behaviours (exploration, aggression) in a pedigreed population of Mediterranean field crickets ( Gryllus bimaculatus ). Path analyses showed that behaviours mediated some genetic relationships between life history traits, though not those involved in trade-offs. Thus, while specific predictions of POLS theory were not supported, genetic integration of behaviour and life history was present. This implies a major role for risky behaviours in life history evolution.
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Grabowski, Nils Th, and Günter Klein. "Microbiology of cooked and dried edible Mediterranean field crickets (Gryllus bimaculatus) and superworms (Zophobas atratus) submitted to four different heating treatments." Food Science and Technology International 23, no. 1 (July 9, 2016): 17–23. http://dx.doi.org/10.1177/1082013216652994.

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To increase the shelf life of edible insects, modern techniques (e.g. freeze-drying) add to the traditional methods (degutting, boiling, sun-drying or roasting). However, microorganisms become inactivated rather than being killed, and when rehydrated, many return to vegetative stadia. Crickets ( Gryllus bimaculatus) and superworms ( Zophobas atratus) were submitted to four different drying techniques (T1 = 10′ cooking, 24 h drying at 60℃; T2 = 10′ cooking, 24 h drying at 80℃; T3 = 30′ cooking, 12 h drying at 80℃, and 12 h drying at 100℃; T4 = boiling T3-treated insects after five days) and analysed for total bacteria counts, Enterobacteriaceae, staphylococci, bacilli, yeasts and moulds counts, E. coli, salmonellae, and Listeria monocytogenes (the latter three being negative throughout). The microbial counts varied strongly displaying species- and treatment-specific patterns. T3 was the most effective of the drying treatments tested to decrease all counts but bacilli, for which T2 was more efficient. Still, total bacteria counts remained high ( G. bimaculatus > Z. atratus). Other opportunistically pathogenic microorganisms ( Bacillus thuringiensis, B. licheniformis, B. pumilis, Pseudomonas aeruginosa, and Cryptococcus neoformans) were also encountered. The tyndallisation-like T4 reduced all counts to below detection limit, but nutrients leakage should be considered regarding food quality. In conclusion, species-specific drying procedures should be devised to ensure food safety.
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Massa, Bruno, Camillo Antonino Cusimano, Paolo Fontana, and Cesare Brizio. "New Unexpected Species of Acheta (Orthoptera, Gryllidae) from the Italian Volcanic Island of Pantelleria." Diversity 14, no. 10 (September 26, 2022): 802. http://dx.doi.org/10.3390/d14100802.

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In late April 2022, while listening to audio files from an unsupervised bioacoustic assessment of the shearwater populations (Aves, Procellariiformes) on the coast of Pantelleria island (Sicily, Italy), a cricket song of unknown attribution was heard. The first bioacoustic analyses, including FFT-based spectrograms and sound pressure envelopes, confirmed that it could not be attributed to the known sound of any Italian nor Mediterranean species of cricket. In the ensuing weeks, field research at the original station and further localities on the southern coast of Pantelleria provided photographs, living specimens, and further audio records. As soon as the photos were shared among the authors, it became clear the species belonged to the genus Acheta. Further bioacoustic analyses and morphological comparison with type specimens of Mediterranean and North-African congenerics in relevant collections and the scientific literature were conducted: they confirmed that the findings could only be attributed to a still undescribed species that escaped detection due to its impervious and unfrequented habitat. Acheta pantescus n. sp. is apparently restricted to the effusive coastal cliffs of the island of Pantelleria, a habitat whose scant extension and vulnerability require environmental protection actions such as the inclusion in a special Red List by the IUCN Italian Committee.
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Meyering-Vos, M., and K. H. Hoffmann. "Expression of allatostatins in the Mediterranean field cricket, Gryllus bimaculatus de Geer (Ensifera, Gryllidae)." Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology 136, no. 2 (October 2003): 207–15. http://dx.doi.org/10.1016/s1096-4959(03)00225-2.

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KEMPA-TOMM, S., K. H. HOFFMANN, and F. ENGELMANN. "Vitellogenins and v itellins of the Mediterranean field cricket, Gryllus bimaculatus: isolation, characterization and quantification." Physiological Entomology 15, no. 2 (June 1990): 167–78. http://dx.doi.org/10.1111/j.1365-3032.1990.tb00504.x.

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Meyering-Vos, M., and A. Müller. "Structure of the sulfakinin cDNA and gene expression from the Mediterranean field cricket Gryllus bimaculatus." Insect Molecular Biology 16, no. 4 (August 2007): 445–54. http://dx.doi.org/10.1111/j.1365-2583.2007.00737.x.

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Hall, M. D., R. Beck, and M. Greenwood. "Detailed developmental morphology of the spermatophore of the Mediterranean field cricket, Gryllus bimaculatus (De Geer) (Orthoptera: Gryllidae)." Arthropod Structure & Development 29, no. 1 (January 2000): 23–32. http://dx.doi.org/10.1016/s1467-8039(00)00010-4.

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RANTALA, M. J., and D. A. ROFF. "An analysis of trade-offs in immune function, body size and development time in the Mediterranean Field Cricket, Gryllus bimaculatus." Functional Ecology 19, no. 2 (April 2005): 323–30. http://dx.doi.org/10.1111/j.1365-2435.2005.00979.x.

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Jonsson, Thorin, Fernando Montealegre-Z, Carl D. Soulsbury, and Daniel Robert. "Tenors Not Sopranos: Bio-Mechanical Constraints on Calling Song Frequencies in the Mediterranean Field-Cricket." Frontiers in Ecology and Evolution 9 (April 20, 2021). http://dx.doi.org/10.3389/fevo.2021.647786.

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Male crickets and their close relatives bush-crickets (Gryllidae and Tettigoniidae, respectively; Orthoptera and Ensifera) attract distant females by producing loud calling songs. In both families, sound is produced by stridulation, the rubbing together of their forewings, whereby the plectrum of one wing is rapidly passed over a serrated file on the opposite wing. The resulting oscillations are amplified by resonating wing regions. A striking difference between Gryllids and Tettigoniids lies in wing morphology and composition of song frequency: Crickets produce mostly low-frequency (2–8 kHz), pure tone signals with highly bilaterally symmetric wings, while bush-crickets use asymmetric wings for high-frequency (10–150 kHz) calls. The evolutionary reasons for this acoustic divergence are unknown. Here, we study the wings of actively stridulating male field-crickets (Gryllus bimaculatus) and present vibro-acoustic data suggesting a biophysical restriction to low-frequency song. Using laser Doppler vibrometry (LDV) and brain-injections of the neuroactivator eserine to elicit singing, we recorded the topography of wing vibrations during active sound production. In freely vibrating wings, each wing region resonated differently. When wings coupled during stridulation, these differences vanished and all wing regions resonated at an identical frequency, that of the narrow-band song (∼5 kHz). However, imperfections in wing-coupling caused phase shifts between both resonators, introducing destructive interference with increasing phase differences. The effect of destructive interference (amplitude reduction) was observed to be minimal at the typical low frequency calls of crickets, and by maintaining the vibration phase difference below 80°. We show that, with the imperfect coupling observed, cricket song production with two symmetric resonators becomes acoustically inefficient above ∼8 kHz. This evidence reveals a bio-mechanical constraint on the production of high-frequency song whilst using two coupled resonators and provides an explanation as to why crickets, unlike bush-crickets, have not evolved to exploit ultrasonic calling songs.
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Dissertations / Theses on the topic "Mediterranean field crickets"

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Hall, Michael. "The developmental morphology of the spermatophore of the Mediterranean field cricket, Gryllus bimaculatus." Thesis, University of Derby, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269791.

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Lundgren, Kristoffer. "The influence of dopamine on personality in the Mediterranean field cricket (Gryllus bimaculatus)." Thesis, Linköpings universitet, Biologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138140.

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For some behavior there are consistent differences between individuals within a population, which is called animal personality. Across species, ranging from insects to mammals, personality has been described along behavioral gradients like activity, exploration, boldness and aggression. Monoamines such as dopamine have been shown to be essential for modulating animal behavior and could therefore be important also in explaining variation in animal personality. Supporting this, the dopaminergic system affect activity (in Confused flour beetles), and aggression (in Mediterranean field crickets). However, the causality and effect of dopamine on these behaviors, and also other behavioral traits used to describe personality is currently less explored. This study experimentally investigated how increased level of dopamine affects activity, boldness, exploration and aggression in Mediterranean field crickets (Gryllus bimaculatus). I show that dopamine manipulation had no effects on measured behavior. These results indicate that increased dopamine levels do not affect the scored personality traits in Mediterranean field crickets. The causality and generality of the relationship between dopamine and behavior used to score variation in personality is thus not clear in this species.
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Books on the topic "Mediterranean field crickets"

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Hall, Michael. The developmental morphology of the spermatophore of the Mediterranean field cricket, gryllus bimaculatus. [Derby: University of Derby], 2001.

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