Effect of different diets on biology, reproductive variables and life and fertility tables of <i>Harmonia axyridis</i> (Pallas) (Coleoptera, Coccinellidae)

de Castro-Guedes, Camila Fediuk; de Almeida, Lúcia Massutti; do Rocio Chiarello Penteado, Susete; Moura, Mauricio Osvaldo

doi:10.1016/j.rbe.2016.03.003

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Biology, Ecology and Diversity • Rev. Bras. entomol. 60 (3) • Jul-Sep 2016 • https://doi.org/10.1016/j.rbe.2016.03.003 copy

Effect of different diets on biology, reproductive variables and life and fertility tables of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The biology, reproductive variables and population growth indicators of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) fed on three diets, namely Cinara atlantica (Wilson, 1919) (Hemiptera: Aphididae), Brevicoryne brassicae (Linnaeus, 1758) (Hemiptera: Aphididae), and frozen eggs of Anagasta kuehniella (Zeller, 1879) (Lepidoptera: Pyralidae), were evaluated. With all three diets, birth rate was higher than mortality, resulting in positive r_m values and thus indicating population growth. Under the conditions used in the experiments, H. axyridis was able to survive, develop and reproduce normally. This demonstrates that are different kind of food that can be essential for supporting the reproduction of some species of Coccinellidae, but not with the same optimization of preferred prey.

Keywords:
Aphids; Development time; Harlequin ladybird; Life table

Development period	Diets
	C. atlantica	B. brassicae	A. kuehniella
Egg	3.27 ± 0.46 ab	3.00 ± 0.00 a	3.33 ± 0.49 b
1º instar	3.47 ± 0.52 a	2.80 ± 0.86 b	2.80 ± 0.41 b
2º instar	2.60 ± 0.63 a	2.87 ± 0.83 a	2.80 ± 0.94 a
3º instar	2.67 ± 0.49 a	3.2 ± 0.83 a	2.73 ± 0.70 a
4º instar	4.47 ± 0.52 a	4.6 ± 0.63 a	5.00 ± 0.84 a
Prepupa	1.00 ± 0.00 a	1.00 ± 0.00 a	1.00 ± 0.00 a
Pupa	4.87 ± 0.35 a	5.00 ± 0.92 a	5.13 ± 0.83 a

Total	22.35	22.47	22.79

Development period	Diets
	C. atlantica	B. brassicae	A. kuehniella
1º instar	0.0018 ± 0.0007 a	0.0013 ± 0.0004 ab	0.0012 ± 0.0006 b
2º instar	0.0033 ± 0.0012 a	0.0023 ± 0.0004 b	0.0023 ± 0.0008 b
3º instar	0.0055 ± 0.0013 a	0.0045 ± 0.0005 b	0.0048 ± 0.0010 ab
4º instar	0.0079 ± 0.0007 a	0.0076 ± 0.0005 a	0.0074 ± 0.0006 a
Newly emerged adult	0.0258 ± 0.0010 a	0.0255 ± 0.0005 a	0.0247 ± 0.0002 b

	Diets
Variables	C. atlanticak	B. brassicae	A. kuehniella
Longevity	95.47 ± 9.72 a	92.40 ± 2.38 a	91.13 ± 25.53 a
Pre-oviposition	6.93 ± 1.22 a	6.13 ± 0.35 a	7.20 ± 0.82 a
Oviposition	80.47 ± 10.36 a	78.73 ± 2.49 a	77.20 ± 26.19 a
Post-oviposition	8.07 ± 0.88 a	7.33 ± 0.72 ab	6.73 ± 0.91 b

	Diets
Variables	C. atlantica	B. brassicae	A. kuehniella
Fecundity	747.53 ± 71.75 a	641.00 ± 59.36 b	555.50 ± 74.56 c
Fertility	671.07 ± 87.26 a	475.07 ± 77.54 b	313.80 ± 86.37 c
Eggs/day	9.33 ± 0.40 a	8.14 ± 0.52 ab	7.58 ± 2.14 b
Nº of egg masses	32.87 ± 8.22 a	27.07 ± 3.37 ab	24.47 ± 7.22 b
Eggs/egg masses	24.08 ± 6.30 a	23.78 ± 1.13 a	23.71 ± 4.55 a

Reproductive indicators	Diets
	C. atlantica	B. brassicae	A. kuehniella
Net reproductive rate (Rº)	373.77 a	320.5 a	277.43 b
Time interval between consecutive generations (T)	46.22 a	44.27 a	47.02 a
Intrinsic rate of increase (r_m)	0.13 a	0.13 a	0.12 a
Finite rate of population increase (λ)	11389 a	11388 a	11275 a
Population doubling time (DT)	5.33 a	5.33 a	5.78 a

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[1] * Corresponding author. E-mail:camifc@yahoo.com (C.F. de Castro-Guedes).