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Keywords: locust
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J Exp Biol (2022) 225 (23): jeb244621.
Published: 9 December 2022
...Bert Foquet; Drew W. Little; Jorge Humberto Medina-Durán; Hojun Song ABSTRACT Locusts exhibit an extreme form of phenotypic plasticity and can exist as two alternative phenotypes, known as solitarious and gregarious phases. These phases, which can transform from one to another depending on local...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2019) 222 (16): jeb208553.
Published: 21 August 2019
... problem of adapting these movements to step-like changes in body morphology during metamorphosis or moulting. Locusts are hemimetabolous insects in which the imaginal moult to adulthood results in a sudden and dramatic allometric growth of the wings relative to the body and the legs. We show that, despite...
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Neuroethology
J Exp Biol (2018) 221 (24): jeb191320.
Published: 10 December 2018
...Tarquin P. Stott; Erik G. N. Olson; Rachel H. Parkinson; John R. Gray ABSTRACT Adaptive collision avoidance behaviours require accurate detection of complex spatiotemporal properties of an object approaching in an animal's natural, three-dimensional environment. Within the locust, the lobula giant...
Includes: Supplementary data
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J Exp Biol (2013) 216 (8): 1423–1429.
Published: 15 April 2013
... are widely conserved. However, based on the variation of DNA methyltransferase genes in invertebrates, it has also been proposed that DNA methylation could provide a molecular mechanism for ecological adaptation. We have now analyzed the methylome of the desert locust, Schistocerca gregaria , which...
Includes: Supplementary data
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Journal Articles
J Exp Biol (2012) 215 (19): 3394–3402.
Published: 1 October 2012
... examined the role of a locust FGLa/AST (Scg-AST-6) in the gut. Proctolin and Scg-AST-6 have opposing effects on gut contraction, where proctolin dose-dependently increases gut muscle tension, while Scg-AST-6 inhibits both muscle tension and spontaneous and neurogenic contractions in a dose-dependent manner...
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J Exp Biol (2012) 215 (18): 3324–3333.
Published: 15 September 2012
... for oxygen. We tested this in the respiratory system of the adult migratory locust Locusta migratoria by comparing the aerobic capacity of hopping and flight muscle with the morphology of the oxygen cascade. Maximum oxygen uptake by flight muscle during tethered flight is 967±76 μmol h −1 g −1 (body mass...
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Journal Articles
J Exp Biol (2011) 214 (19): 3165–3172.
Published: 1 October 2011
... of sound in the cochlea; however, certain animals lacking a cochlea and hair cells are also reported to be capable of DPOAEs. In the Insecta, DPOAEs have been recorded from the locust auditory organ. However, the site of generation of these DPOAEs and the physiological mechanisms causing their presence...
Journal Articles
J Exp Biol (2011) 214 (19): 3225–3237.
Published: 1 October 2011
... in the respiratory system of the migratory locust, Locusta migratoria , by comparing the aerobic capacity of the jumping muscles with the morphology of the oxygen cascade in the hopping legs using an intraspecific allometric analysis of different body mass ( M b ) at selected juvenile life stages. The maximum oxygen...
Includes: Supplementary data
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J Exp Biol (2010) 213 (19): 3378–3387.
Published: 1 October 2010
...David Cofer; Gennady Cymbalyuk; William J. Heitler; Donald H. Edwards SUMMARY Locust can jump precisely to a target, yet they can also tumble during the trajectory. We propose two mechanisms that would allow the locust to control tumbling during the jump. The first is that prior to the jump...
Journal Articles
J Exp Biol (2010) 213 (15): 2629–2639.
Published: 1 August 2010
...Peter J. Simmons; Rob R. de Ruyter van Steveninck SUMMARY We investigate coding in a locust brain neuron, DNI, which transforms graded synaptic input from ocellar L-neurons into axonal spikes that travel to excite particular thoracic flight neurons. Ocellar neurons are naturally stimulated...
Journal Articles
J Exp Biol (2010) 213 (7): 1060–1068.
Published: 1 April 2010
...D. Cofer; G. Cymbalyuk; W. J. Heitler; D. H. Edwards SUMMARY The neural circuitry and biomechanics of kicking in locusts have been studied to understand their roles in the control of both kicking and jumping. It has been hypothesized that the same neural circuit and biomechanics governed both...
Includes: Multimedia, Supplementary data
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Journal Articles
J Exp Biol (2007) 210 (24): 4448–4456.
Published: 15 December 2007
...Philip L. Newland; Paul Yates SUMMARY In locusts, a central pattern generator underlies the rhythmic movements of the ovipositor valves that serve to drive the abdomen into damp soil in order to lay eggs. We have investigated the role of nitric oxide (NO) in the control of this oviposition digging...
Journal Articles
J Exp Biol (2006) 209 (23): 4690–4700.
Published: 1 December 2006
... by photoperiod, prior heat experience and the sex of the animal. We compared thermosensitivity and thermotolerance of ventilatory motor pattern generation in locusts reared under two photoperiods (12:12 and 16:8; i.e. 12 h:12 h and 16 h:8 h L:D, respectively) before and after heat shock pre-treatment (HS: 3 h...
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