Environmental Entomology (2004) 33, 1200-1206

Jesusa Crisostomo Legaspi (2004)
Life history of Podisus maculiventris (Heteroptera: Pentatomidae) adult females under different constant temperatures
Environmental Entomology 33 (5), 1200-1206
Abstract: Life table analysis was performed on Podisus maculiventris (Say) adult females at constant temperatures of 16, 26, 30, and 36°C. Survivorship curves were linear type II, with steeper rates of decline at higher temperatures. Longevity at 16°C (47.2 d) was significantly longer than that at 26°C (14.3 d) or 30°C (12 d). Adults under the 36°C survived only 4.9 d and laid no eggs. Percentage of eggs that hatched was relatively constant at ~ or about 40% at 16, 26, and 30°C. Numbers of egg clutches (ranging from 5.9 to 9.4), eggs per clutch (13.6-14.6), and eggs in the first clutch (9.0-15.1) did not differ significantly at these three temperatures. However, preoviposition period was significantly longer at 16°C (20.3 d) than at 26°C (6.3 d) and 30°C (4.9 d). Number of eggs laid was related to body weight by the equation E = -139.1 + 3.49w, where E is number of eggs laid per female lifetime, and w is the weight of the predator female. Life table analysis of P. maculiventris female adults showed that both net reproductive rate (R ₀ ) and gross reproductive rate (GRR) were highest at 26°C, estimated at 47.8 and 156.0 females per female, respectively. However, the shorter generation times at 30°C (T = 42.2 d) resulted in higher values for the intrinsic rate of increase (r = 0.09), the finite rate of increase (lambda= 1.09), and doubling time (DT = 7.7 d). Analysis of cumulative egg production suggests that 26°C may be more suitable for maintaining colonies of P. maculiventris because of the sustained levels of egg production over a longer period, compared with the 30°C treatment.
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Database assignments for author(s): Jesusa Crisostomo Legaspi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
rearing/culturing/mass production

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Podisus maculiventris (predator)