scholarly journals Sex‐specific associations between life‐history traits and a novel reproductive polymorphism in the Pacific field cricket

2021 ◽  
Author(s):  
Jon Richardson ◽  
Justa L. Heinen‐Kay ◽  
Marlene Zuk
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Field Cricket ◽  
The Pacific

scholarly journals Effect of temperature on life-history traits and mating calls of a field cricket, Acanthogryllus asiaticus

2020 ◽  
Vol 93 ◽  
pp. 102740
Author(s):  
Richa Singh ◽  
P. Prathibha ◽  
Manjari Jain
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Field Cricket ◽  
Effect Of Temperature ◽  
Mating Calls

Should I stay or should I go? Complex environments influence the developmental plasticity of flight capacity and flight-related trade-offs

2019 ◽  
Vol 128 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Jordan R Glass ◽  
Zachary R Stahlschmidt
Keyword(s):  
Life History ◽  
Food Availability ◽  
Life History Traits ◽  
Developmental Plasticity ◽  
Temperature Variability ◽  
Field Cricket ◽  
Valuable Insight ◽  
Complex Environments ◽  
Trade Offs ◽  
Flight Capacity

Abstract Complex environments, characterized by co-varying factors (e.g. temperature and food availability) may cause animals to invest resources differentially into fitness-related traits. Thus, experiments manipulating multiple environmental factors concurrently provide valuable insight into the role of the environment in shaping not only important traits (e.g. dispersal capacity or reproduction), but also trait–trait interactions (e.g. trade-offs between traits). We used a multi-factorial design to manipulate variation in temperature (constant 28 °C vs. 28 ± 5 °C daily cycle) and food availability (unlimited vs. intermittent access) throughout development in the sand field cricket (Gryllus firmus). Using a univariate approach, we found that temperature variability and unlimited food availability promoted survival, development, growth, body size and/or reproductive investment. Using principal components as indices of resource allocation strategy, we found that temperature variability and unlimited food reduced investment into flight capacity in females. Thus, we detected a sex-specific trade-off between flight and other life-history traits that was developmentally plastic in response to variation in temperature and food availability. We develop an experimental and statistical framework to reveal shifts in correlative patterns of investment into different life-history traits. This approach can be applied to a range of biological systems to investigate how environmental complexity influences traits and trait trade-offs.

scholarly journals Effect of temperature on life-history traits and mating calls of a field cricket, Acanthogryllus asiaticus

2020 ◽  
Author(s):  
Richa Singh ◽  
P Prathibha ◽  
Manjari Jain
Keyword(s):  
Life History ◽  
Ambient Temperature ◽  
Life History Traits ◽  
Sexual Communication ◽  
Peak Frequency ◽  
Field Cricket ◽  
Effect Of Temperature ◽  
Developmental Temperature ◽  
Mating Call ◽  
Mating Calls

AbstractEctotherms are sensitive to the changes in ambient temperature with respect to their physiology and development. To compensate for the effects of variation in temperature, ectotherms exhibit physiological plasticity which can be for short or long term. An extensive body of literature exists towards understanding these effects and the solutions ectotherms have evolved. However, to what extent rearing temperature during early life stages impacts the behaviour expressed in adulthood is less clearly understood. In the present study, we aimed to examine the effect of developmental temperature on life-history traits and mating call features in a tropical field cricket, Acanthogryllus asiaticus. We raised A. asiaticus at two different developmental conditions: 25°C and 30°C. We found developmental time and adult lifespan of individuals reared at 30°C to be shorter than those at 25°C. Increased developmental temperature influenced various body size parameters differentially. Males raised at 30°C were found to be larger and heavier than those raised at 25°C, making A. asiaticus an exception to the temperature-size rule. We found a significant effect of the change in immediate ambient temperature on different call features of both field-caught and lab-bred individuals. In addition, developmental temperature also affected mating call features as individuals raised at higher temperature produced faster calls with a higher peak frequency compared to those raised at lower temperature. However, the interaction of both developmental and immediate temperature on mating calls showed differential effects. Our study highlights the importance of understanding how environmental temperature shapes life-history and sexual communication in crickets.

scholarly journals Does acoustic environment modify boldness and related life-history traits in field cricket nymphs?

2019 ◽  
Vol 22 (2) ◽  
pp. 105-112
Author(s):  
Krisztina Petróczki ◽  
Anssi Vainikka ◽  
Raine Kortet
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Field Cricket ◽  
Acoustic Environment

scholarly journals Screening of Predatory Mites as Potential Control Agents of Pest Mites in Landscape Plant Nurseries of the Pacific Northwest

2000 ◽  
Vol 18 (4) ◽  
pp. 218-223
Author(s):  
P.D. Pratt ◽  
B.A. Croft
Keyword(s):  
Biological Control ◽  
Life History ◽  
Pacific Northwest ◽  
Spider Mite ◽  
Life History Traits ◽  
Predatory Mites ◽  
Spider Mites ◽  
Landscape Plant ◽  
Landscape Plants ◽  
The Pacific

Abstract To select a biological control agent for suppression of spider mites on landscape plants in western regions of the Pacific Northwest, we compared life history traits of Galendromus occidentalis Nesbitt, Neoseiulus californicus (McGregor) and Neoseiulus fallacis (Garman). We also evaluated abilities of these predatory mites to suppress spider mites in 4 landscape plant species under field conditions. Comparing life history traits from the literature, intrinsic rate of increase was similar between the 2 Neoseiulus species but lower for G. occidentalis. Prey killed per day was greatest for G. occidentalis > N. fallacis > N. californicus. For overwintering abilities, N. fallacis and G. occidentalis are indigenous to the Pacific Northwest and will survive winter assuming overwintering sites are available, but survival of N. californicus is unlikely. Neoseiulus californicus has the widest prey range, G. occidentalis the narrowest, with N. fallacis intermediate. When inoculated into spider mite infested landscape plants, N. fallacis was equally effective at suppressing spider mites as G. occidentalis in either Malus rootstock or Acer shade trees. Further tests with N. fallacis or N. californicus on Spiraea and Rhododendron plants suggested that N. fallacis is equally or more effective at suppressing pest mites, respectively. Compared with the other candidates, N. fallacis was equally effective at controlling pest mites and has a wider prey range than G. occidentalis. Neoseiulus fallacis appears to be the best candidate for biological control of multiple spider mite species on landscape plants in these parts of the Pacific Northwest.

scholarly journals Developmental and genetic effects on behavioral and life‐history traits in a field cricket

2019 ◽  
Vol 9 (6) ◽  
pp. 3434-3445 ◽  
Author(s):  
Tina W. Wey ◽  
Denis Réale ◽  
Clint D. Kelly
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Genetic Effects ◽  
Field Cricket
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