Neotropical Entomology (2004) 33, 149-154

Geraldo J.N. Vasconcelos, Fernando R. Da Silva, Manoel G.C. Gondim Jr., Reginaldo Barros and Jose V. Oliveira (2004)
Efeito de Diferentes Temperaturas no Desenvolvimento e Reprodução de Tetranychus abacae Baker and Printchard (Acari: Tetranychidae) em Bananeira Musa sp. cv. Prata
[Effect of different temperatures on the development and reproduction of Tetranychus abacae Baker and Printchard (Acari: Tetranychidae) on Musa sp. cv. Prata]
Neotropical Entomology 33 (2), 149-154
Abstract: The thermal requirements of Tetranychus abacae Baker and Printchard in Musa sp. cv. Prata were studied at constant temperatures (20;23; 25,5 and 30°C), as well as the effect of the temperatures on the adult phase. Age-specific life tables were built with the data. The basal temperature and thermal constant for egg, larva, protonymph, deutonymph and egg-adult development were: 14,9; 15,2; 14,2; 16,2 and 15,3°C and 47,7; 25,4; 25,5; 27,4 and 124,3 GD, respectively. High fecundity was registered at 25,5°C. The mean duration of the generation (T) varied from 50,03 to 13,51 days between 20°C and 30°C. The net reproductive rate (R₀) was high at the temperature of 25,5°C, increasing 28,7 times at each generation. The intrinsic rate of natural increase (r_m) and the finite rate of increase (lambda) varied from 0,049 and 1,05 to 0,226 and 1,25 between 20°C to 30°C, respectively. It as possible to estimate that T. abacae can develop up to 31 generations per year at 26°C in field conditions and 31 generations per year at 30°C in green house conditions, in Pernambuco State, Brazil.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Geraldo J.N. Vasconcelos

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tetranychus abacae	Banana/plantain (Musa)	Brazil (NE)