Neural- and endocrine control of flight muscle degeneration in the adult cricket, Gryllus bimaculatus

Shiga, Sakiko; Yasuyama, Kouji; Okamura, Naoko; Yamaguchi, Tsuneo

doi:10.1016/s0022-1910(01)00137-8

Cited by 23 publications

(16 citation statements)

References 22 publications

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“…Some accumulation of synaptic vesicles at nerve endings of neuromuscular junctions in degenerated muscles was noted suggesting a possible involvement of neural signals in histolysis, but the primary control was determined to be endocrine, since nerves to degenerating muscles remained intact. Similar results have been more recently been reported in relation to neural and endocrine control of flight muscle degeneration in the cricket, Gryllus bimaculatus, which exhibits a more sustained flight ability, but also undergoes histolysis (Shiga et al, 2002). Using light microscopy and cytohistochemistry, Srihari et al (1975) noted formation of vacuoles, presence of pycnotic nuclei, disorganization and loss of muscle fibers in DLMs on the fourth day following adult ecdysis in the house cricket.…”

Section: Introductionsupporting

confidence: 83%

Programmed cell death in flight muscle histolysis of the house cricket

Oliver

Albury

Mousseau

2007

Journal of Insect Physiology

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We have characterized the process of flight muscle histolysis in the female house cricket, Acheta domesticus, through analysis of alterations of tissue wet weight, total protein content, and percent shortening of the dorsal longitudinal flight muscles (DLMs). Our objectives were to (1) define the normal course of histolysis in the cricket, (2) analyze the effects of juvenile hormone (JH) removal and replacement, (3) determine the effects of cycloheximide treatment, and (4) examine patterns of protein expression during histolysis.Our results suggest that flight muscle histolysis in the house cricket is an example of an active, developmentally regulated cell death program induced by an endocrine signal. Initial declines of total protein in DLMs indicated the JH signal that induced histolysis occurred by Day 2 and that histolysis was essentially complete by Day 3. Significant reductions in tissue weight and percent muscle shortening were observed in DLMs from Day 3 crickets. Cervical ligation of Day 1 crickets prevented histolysis but this inhibition could be reversed by continual topical treatments with methoprene (an active JH analog) although ligation of Day 2 crickets did not prevent histolysis. A requirement for active protein expression was demonstrated by analysis of synthesis block by cycloheximide and short-term incorporation of 35 S-methionine. Treatment with cycloheximide prevented histolysis. Autofluorographic imaging of DLM proteins separated by electrophoresis revealed apparent coordinated regulation of protein expression.

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Section: Introductionsupporting

confidence: 83%

Programmed cell death in flight muscle histolysis of the house cricket

Oliver

Albury

Mousseau

2007

Journal of Insect Physiology

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“…Our findings (CS: 37 and 39 U g −1 muscle; HOAD 68 and 81 U g −1 muscle in G. assimilis and G. texensis respectively) reveal that signalling muscle has greater aerobic capacity than histolyzed flight muscle, but lower values than flight capable morphs. We did not quantify the level of flight muscle histolysis in our study, but mesothoracic muscles do not seem to histolyze in adult male crickets [59]. Also, flight muscles tend to histolyze at a fairly young age in crickets: within 4 days of imaginal moult in A. domesticus [60], [61]; within 7 days of imaginal moult in G. bimaculatus [59]; and within 12 days of imaginal moult in G. firmus [58].…”

Section: Discussionmentioning

confidence: 85%

“…We did not quantify the level of flight muscle histolysis in our study, but mesothoracic muscles do not seem to histolyze in adult male crickets [59]. Also, flight muscles tend to histolyze at a fairly young age in crickets: within 4 days of imaginal moult in A. domesticus [60], [61]; within 7 days of imaginal moult in G. bimaculatus [59]; and within 12 days of imaginal moult in G. firmus [58]. Our metabolic assays were conducted 14 days post imaginal moult, therefore all flight muscles should be in the same histolyzed state.…”

Section: Discussionmentioning

confidence: 89%

Body Morphology, Energy Stores, and Muscle Enzyme Activity Explain Cricket Acoustic Mate Attraction Signaling Variation

2014

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High mating success in animals is often dependent on males signalling attractively with high effort. Since males should be selected to maximize their reproductive success, female preferences for these traits should result in minimal signal variation persisting in the population. However, extensive signal variation persists. The genic capture hypothesis proposes genetic variation persists because fitness-conferring traits depend on an individual's basic processes, including underlying physiological, morphological, and biochemical traits, which are themselves genetically variable. To explore the traits underlying signal variation, we quantified among-male differences in signalling, morphology, energy stores, and the activities of key enzymes associated with signalling muscle metabolism in two species of crickets, Gryllus assimilis (chirper: <20 pulses/chirp) and G. texensis (triller: >20 pulses/chirp). Chirping G. assimilis primarily fuelled signalling with carbohydrate metabolism: smaller individuals and individuals with increased thoracic glycogen stores signalled for mates with greater effort; individuals with greater glycogen phosphorylase activity produced more attractive mating signals. Conversely, the more energetic trilling G. texensis fuelled signalling with both lipid and carbohydrate metabolism: individuals with increased β-hydroxyacyl-CoA dehydrogenase activity and increased thoracic free carbohydrate content signalled for mates with greater effort; individuals with higher thoracic and abdominal carbohydrate content and higher abdominal lipid stores produced more attractive signals. Our findings suggest variation in male reproductive success may be driven by hidden physiological trade-offs that affect the ability to uptake, retain, and use essential nutrients, although the results remain correlational in nature. Our findings indicate that a physiological perspective may help us to understand some of the causes of variation in behaviour.

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“…This can easily be understood, considering that butterflies are dependent on flight for most of their activities, and that histolysis of muscles is generally associated with the complete loss of flight‐ability in other insects known to exhibit this phenomenon (e.g. Janet, 1907; Johnson, 1957; Edwards, 1969; Ready & Josephson, 1982; Kaitala & Huldén, 1990; Shiga et al ., 1991; Tanaka, 1991).…”

Section: Discussionmentioning

confidence: 99%

Age-related changes in thoracic mass: possible reallocation of resources to reproduction in butterflies

Stjernholm

Karlsson

Boggs

2005

Biological Journal of the Linnean Society

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In nectar-feeding butterflies, reproductive potential is usually thought to depend on the size of the reproductive reserves in the abdomen, the adult food quality and, for females, the amount of resources received in the spermatophores at mating. Recent findings show that thorax mass and nitrogen content decrease with age in some butterfly species, and that thorax resources may be used for reproduction in the butterfly Pieris napi , just as in some other insects. In order to determine whether this is a general pattern and ascertain how it relates to the investment of resources in reproduction we studied the dynamics of thorax and abdomen mass changes in 11 Swedish butterfly species. By regressing thorax and abdomen mass on age of field-collected specimens, we show that loss of mass from both the thorax and the abdomen is a common phenomenon among nectar-feeding temperate zone butterflies under natural conditions. We argue that our results indicate that resources from flight muscles can be reallocated to reproduction by these butterflies, thus increasing their reproductive potential. Within species, females use proportionately more resources from the thorax than do males, as expected from the difference in investment of resources in reproduction. Among males we expect species with a higher reproductive investment to have a larger decrease in thorax and abdomen mass, and our data indicate that this is the case. Looking at the change in relative thorax mass, our results suggest that the use of resources from the thorax does not affect flight performance negatively, something that could constrain the use of muscle resources.

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Neural- and endocrine control of flight muscle degeneration in the adult cricket, Gryllus bimaculatus

Cited by 23 publications

References 22 publications

Programmed cell death in flight muscle histolysis of the house cricket

Programmed cell death in flight muscle histolysis of the house cricket

Body Morphology, Energy Stores, and Muscle Enzyme Activity Explain Cricket Acoustic Mate Attraction Signaling Variation

Age-related changes in thoracic mass: possible reallocation of resources to reproduction in butterflies

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