Joint effects of temperature, food quality, and season on the development of the cerambycid Morimus funereus under laboratory conditions

1989 ◽  
Vol 51 (3) ◽  
pp. 261-267 ◽  
Author(s):  
V. Stanić ◽  
M. Janković-Hladni ◽  
J. Ivanović ◽  
V. Nenadović
Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 432 ◽  
Author(s):  
Melody A. Keena ◽  
Paul M. Moore ◽  
Gregg Bradford

Anoplophora chinensis (Forster) is an invasive species that can damage many tree species in orchard, urban, and forested habitats. Adult survival, reproduction, and egg hatch of A. chinensis from Italy and China are evaluated at eight constant temperatures (5, 10, 15, 20, 25, 30, 35, and 40 °C) under laboratory conditions. The estimated Tmax for longevity was 42 and 33 °C for females and 42 and 39 °C for males from China and Italy, respectively. The estimated Tmax, Tmin, and optimum temperature for fecundity were 35, 9, and 29 °C, respectively. Females laid eggs at 15–30 °C and eggs hatched at 15–35 °C. Days to first oviposition increased exponentially from 13 days at 30 °C to >300 days near 10 °C. The estimated Tmin for egg hatch was 13 °C, the Tmax at 38 °C, and the optimum 29 °C. Percentage hatch was estimated to be highest at 26 °C and have a Tmax of 31 °C and Tmin of 10 °C. These results indicate that summer temperatures over a wide range of latitudes should support beetle survival and reproduction, but at temperatures ≥35 °C, oviposition ceases, and adult survivorship declines. In addition, females may survive into the fall, but lay fewer eggs that may not hatch. These responses of A. chinensis to temperature can be used for developing phenological models to predict the timing of stages for management or eradication efforts.


1979 ◽  
Vol 36 (3) ◽  
pp. 335-342 ◽  
Author(s):  
N. H. Anderson ◽  
Kenneth W. Cummins

Benthic species are partitioned into functional feeding groups based on food-acquiring mechanisms. Effects of food quality on voltinism, growth rate, and size at maturity are demonstrated for representatives of gougers and shredders, collectors, and scrapers. Food quality for predators is uniformly high, but food quantity (prey density) obviously influences their life histories. A food switch from herbivory to predation, or some ingestion of animal tissues, in the later stages is a feature of the life cycle of many aquatic insects. Temperature interacts with both food quality and quantity in effects on growth as well as having a direct effect on control of metabolism. Thus further elaboration of the role of food in life history phenomena will require controlled field or laboratory studies to partition the effects of temperature and food. Key words: aquatic insects, feeding strategies, functional groups, life histories


2011 ◽  
Vol 343-344 ◽  
pp. 497-504 ◽  
Author(s):  
Guang Peng Feng ◽  
Ping Zhuang ◽  
Long Zhen Zhang ◽  
Ming Duan ◽  
Jian Yi Liu

Temperature is known to affect both the structural and functional properties of proteins in ectothermic animals like fish. Habitat temperature can lead to oxidative stress and influence the metabolic rates of enzymes in fish. In the current study, juvenile Chinese sturgeon (Acipenser sinensis), an anadromous and threatened species that lives only in the Yangtze River, were cultured under laboratory conditions for 66 days at 15, 20, 25, and 30 °C. We then studied the effects of temperature on the oxidative stress biomarkers in juvenile Chinese sturgeon. We found the activity of lysozyme (LSZ) reached its maximum at 25 °C (30.1 ± 1.2 μg/mL), while it reached its minimum at 15 °C (13.1 ± 3.3 μg/mL). In addition, the activity of xanthine oxidase (XOD) reached its maximum at 30 °C (15.20 ± 3.50), while it reached its minimum at 25 °C (12.01 ± 1.66 U/L). Furthermore, both the ability of inhibiting hydroxyl radicals (AIHR) and total antioxidative capacity (T-AOC) were increased at first and subsequently decreased with increasing temperatures, and both reached their maximum at 20 °C (1344.9 ± 349.2 U/mL and 9.54 ± 0.36 U/mL, respectively). Both AIHR and T-AOC were significantly higher at 20 °C than their corresponding levels at 25 °C and 30 °C. These results indicate that the temperature stress was higher at 15 °C and 30 °C for juvenile Chinese sturgeon. Based on the exhibited levels of LSZ, XOD, AIHR, and T-AOC in fish, we conclude the temperature range of 20−25 °C caused the least stress on the fish, and should be considered as the appropriate growth temperature for juvenile Chinese sturgeon.


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