Revista Brasileira de Entomologia (1999) 43, 61-68

W.P. Lemos, R.S. Medeiros and F.S. Ramalho (1999)
[Thermal requirements of Euborella annulipes (Lucas) (Dermaptera, Anisolabrididae) and its relationship with the prey: cotton boll weevil]
Revista Brasileira de Entomologia 43 (1-2), 61-68
Abstract: The objectives of the research were to determine the threshold temperatures (Tb) and the thermal constants (K) for eggs, instars, and nymphs that will originate males and females of E. annulipes. The study was conducted at the Biological Control Unit/Embrapa Algodão, Campina Grande, Paraiba, Brazil in bioclimatic chambers at 15; 20; 23, 25, 28, 30, 33 and 35 °C, relative humidity of 60 ± 10% and a 14 h:10 h (L:D) photoperiod. The results showed that: (1) The development rates of males of E. annulipes with five instars during the egg stage, each instar, nymphal stage, and from egg to adult emergence increased linearly with the increase of temperature in the limits from 20 to 33 °C, except for nymphs of third and fourth instars; (2) The development rates of females of E. annulipes during the egg stage, each instar, nymphal stage, and from egg to adult emergence showed linear relation with the temperature in the limits, from 20 to 30 °C, except for nymphs of second instar in which the limits of temperature were from 20 to 33 °C; (3) The threshold temperatures (T) for eggs, nymphal stage, and from egg to adult emergence of males of E. annulipes with five instars were 13.39, 15.79, and 15.63 °C, respectively; (4) For females with five instars, the threshold temperatures (Tb) for egg, nymphal stage, and from egg to adult emergence of E. annulipes were respectively, 15.00, 16.74 and 16.39 °C.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Database assignments for author(s): Francisco de Sousa Ramalho

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Anthonomus grandis
Euborellia annulipes (predator)	Anthonomus grandis