Functional Response of Neoseiulus barkeri to Scirtothrips dorsalis Hood of Mango

doi:10.3969/j.issn.1000-2561.2020.05.021

Abstract

Abstract:

In order to determine the damage control potential of Neoseiulus barkeri on Scirtothrips dorsalis Hood of mango, the predation ability of N. barkeri on S. dorsalis Hood of mango was observed under the conditions of temperature of (27±1)℃ and RH (75±5)% in the room. The predation efficiency of different insect states of N. barkeri on S. dorsalis Hood was comprehensively assessed by the instantaneous attack rate (a), handing time (T_h), predationcapacity (a/T_h) and other parameters. N. barkeri could feed on the adults, nymphs of the first and second age of S. dorsalis Hood, and had a certain predating ability. With the increase of prey density, the daily feeding amount of predatory mites increased gradually. Among them, the female adult mite and deutonymph mite had the largest predationcapacity to the nymph of the first age of S. dorsalis Hood (10.35 and 12.82 per day, respectively), while the male adult mite had the largest predationcapacity to the nymph of the second age of S. dorsalis Hood (12.48 per day). The female and male adult mites of Apterygium barbati showed the strongest instantaneous attack rate to the 2-year nymph of the S. dorsalis Hood (1.0227 and 1.1208, respectively), while the deutonymph mite showed the maximum instantaneous attack rate to the female adults of S. dorsalis Hood (1.5774).

Key words: Neoseiulus barkeri, mango, Scirtothrips dorsalis Hood, functional response, predatory efficiency

CLC Number:

S436.67

ZHOU Yang,CHEN Junyu,CAI Ducheng,FU Yueguan. Functional Response of Neoseiulus barkeri to Scirtothrips dorsalis Hood of Mango[J]. Chinese Journal of Tropical Crops, 2020, 41(5): 1001-1006.

Figures/Tables 7

References 24

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蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number	蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number
雌成虫	2	1.90±0.10^a	1龄若虫	2	2.00±0.00^a
	4	3.70±0.21^b		4	3.70±0.15^b
	6	4.70±0.15^c		6	5.40±0.16^c
	8	4.60±0.31^d		8	5.80±0.20^c
	10	5.70±0.26^d		10	4.90±0.23^d
雄成虫	3	2.70±0.15^a	2龄若虫	2	1.70±0.15^a
	4	2.60±0.27^a		4	2.30±0.30^a
	5	3.40±0.27^a		6	4.00±0.26^b
	6	3.50±0.31^a		8	4.70±0.21^bc
	7	3.50±0.40^a		10	5.30±0.37^c

蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number	蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number
雌成虫	2	1.90±0.10^a	1龄若虫	2	2.00±0.00^a
	4	3.70±0.21^b		4	3.70±0.15^b
	6	4.70±0.15^c		6	5.40±0.16^c
	8	4.60±0.31^d		8	5.80±0.20^c
	10	5.70±0.26^d		10	4.90±0.23^d
雄成虫	3	2.70±0.15^a	2龄若虫	2	1.70±0.15^a
	4	2.60±0.27^a		4	2.30±0.30^a
	5	3.40±0.27^a		6	4.00±0.26^b
	6	3.50±0.31^a		8	4.70±0.21^bc
	7	3.50±0.40^a		10	5.30±0.37^c

蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number	蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number
雌成虫	1	1.00±0.00^a	1龄若虫	2	2.00±0.00^a
	2	1.70±0.15^b		4	3.00±0.26^b
	3	2.20±0.20^b		6	2.80±0.13^b
	4	3.20±0.29^c		8	4.60±0.27^c
	5	3.20±0.20^c		10	4.50±0.22^c
雄成虫	2	1.40±0.22^a	2龄若虫	2	1.60±0.16^a
	4	1.90±0.31^ab		4	2.20±0.25^a
	6	2.80±0.47^bc		6	4.10±0.23^b
	8	2.70±0.30^bc		8	4.70±0.21^bc
	10	3.00±0.26^c		10	5.20±0.25^c

蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number	蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number
雌成虫	1	1.00±0.00^a	1龄若虫	2	2.00±0.00^a
	2	1.70±0.15^b		4	3.00±0.26^b
	3	2.20±0.20^b		6	2.80±0.13^b
	4	3.20±0.29^c		8	4.60±0.27^c
	5	3.20±0.20^c		10	4.50±0.22^c
雄成虫	2	1.40±0.22^a	2龄若虫	2	1.60±0.16^a
	4	1.90±0.31^ab		4	2.20±0.25^a
	6	2.80±0.47^bc		6	4.10±0.23^b
	8	2.70±0.30^bc		8	4.70±0.21^bc
	10	3.00±0.26^c		10	5.20±0.25^c

蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number	蓟马虫态 Stages of thrips	蓟马密度（头） Densities of thrips	日捕食量（头） Daily predation number
雌成虫	1	0.50±0.17^a	1龄若虫	2	1.60±0.16^a
	2	1.00±0.26^ab		4	2.60±0.43^b
	3	1.10±0.15^b		6	4.10±0.23^c
	4	1.30±0.18^b		8	4.40±0.27^c
	5	1.40±0.16^b		10	5.20±0.20^d
雄成虫	1	0.80±0.13^a	2龄若虫	2	2.00±0.00^a
	2	1.20±0.20^ab		4	2.00±0.21^a
	3	1.40±0.22^bc		6	2.90±0.35^b
	4	1.60±0.16^bc		8	3.20±0.33^b
	5	1.80±0.13^c		10	3.50±0.14^b