Sipha maydis (Hemiptera: Aphididae) in the humid subtropical region of Brazil: distribution, seasonality and biology Author Lampert, Silvana University of São Paulo, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, Piracicaba, São Paulo, 13418 - 000, Brazil; Author Salvadori, José R. University of Passo Fundo, Faculty of Agronomy and Veterinary Medicine, Passo Fundo, Rio Grande do Sul, 99052 - 900, Brazil; E-mail: salvadori @ upf. br (J. R. S.) salvadori@upf.br Author Lau, Douglas Brazilian Agricultural Research Corporation, National Wheat Research Center (Embrapa Trigo), Passo Fundo, Rio Grande do Sul, 70770 - 901, Brazil; Author Pereira, Paulo R. V. da S. Brazilian Agricultural Research Corporation, National Forest Research Center (Embrapa Florestas), Colombo, Paraná, 83411 - 000, Brazil; Author Engel, Eduardo University of São Paulo, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, Piracicaba, São Paulo, 13418 - 000, Brazil; Author Savaris, Marcoandre University of São Paulo, Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture, Piracicaba, São Paulo, 13418 - 000, Brazil; text Florida Entomologist 2023 2023-04-18 106 1 1 9 https://bioone.org/journals/florida-entomologist/volume-106/issue-1/024.106.0101/Sipha-maydis-Hemiptera--Aphididae-in-the-Humid-Subtropical-Region/10.1653/024.106.0101.full journal article 10.1653/024.106.0101 1938-5102 11564263

Table 3. Biological parameters of Sipha maydis on different host plants in Brazil.

			Host
1 r = intrinsic growth rate; T = mean generation time; R = net reproduction rate; λ = finite growth rate. m o
1 r = intrinsic growth rate; T = mean generation time; R = net reproduction rate; λ = finite growth rate.
Parameters1
(mean ± SE)	Triticum aestivum	Hordeum vulgare	Avena strigosa	Lolium multiflorum	Zea mays	Cynodon dactylon
r m	0.76 ± 0.01	0.68 ± 0.01	0.79 ± 0.01	0.74 ± 0.01	0.46 ± 0.00	0.38 ± 0.01
T	20.8 ± 0.32	21.3 ± 0.32	19.2 ± 0.31	17.6 ± 0.43	19.9 ± 0.28	17.8 ± 0.23
R o	55.2 ± 0.20	52.0 ± 0.40	40.9 ± 0.31	27.6 ± 0.29	16.5 ± 0.20	11.0 ± 0.13
λ	2.1 ± 0.09	1.9 ± 0.08	2.2 ± 0.08	2.1 ± 0.07	1.5 ± 0.08	1.4 ± 0.11