Efficacy of aggregation nano gel pheromone traps on the catchability of <i>Rhynchophorus ferrugineus</i> (Olivier) in Egypt

El-Wahab, A. S. Abd; El-Fattah, A. Y. Abd; El-Shafei, W. K. M.; Helaly, A. A. El

doi:10.1590/1519-6984.231808

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Brazilian Journal of Biology

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Original Article • Braz. J. Biol. 81 (2) • Mar-May 2021 • https://doi.org/10.1590/1519-6984.231808 copy

Efficacy of aggregation nano gel pheromone traps on the catchability of Rhynchophorus ferrugineus (Olivier) in Egypt

Eficácia das armadilhas de feromônio de nano gel de agregação na capturabilidade de Rhynchophorus ferrugineus (Olivier) no Egito

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Field experiments were carried out in the reclaimed land east of Cairo-Alexandria Desert Road, Village of Wardan, Giza Governorate, Egypt, to evaluate the impact of using nano-gels pheromone for the first time on the attraction of the RPW adults by pheromone traps compared to the control which is normal pheromone during two successive seasons in 2018 and 2019. Also, this study aimed to compare the efficacy of two types of trap, traditional trap (type 1) and dry funnel trap (type 2) in capturing of RPW adults. Results revealed that the nano gel pheromone traps attracted significantly more adults with an average of (4.26 and 3.56) adults/trap and total of (55.33 and 46.33) adults/trap compared to control with an average (2.69 and 2.46) and total of (35.00 and 32.00) adults/trap for the two seasons 2018 and 2019 respectively. Results indicated that the use of nano gel pheromone for the first time in field improved the trap catchability to RPW adults by 22.51 and 18.30% of total number of RPW adults captured throw out the two successive seasons respectively. In addition, there was no significant difference between the total numbers of RPW adults collected by the two tested type of traps over the two successive seasons. Furthermore, the sex ratio between males and females of total collected RPW adults found to be1: 1.43 and 1: 1.94 at 2018 and 2019 respectively.

Keywords:
nano-gels pheromone; Rhynchophorus ferrugineus; RPW trap; aggregation pheromone; traditional trap

Weeks	Seasons
	2018						2019
	Control pheromone (Mean ± SD)			Nano Gel Pheromone (Mean ± SD)			Control pheromone (Mean ± SD)			Nano Gel Pheromone (Mean ± SD)
week1	4.00	±	1.73	3.33	±	2.31	3.67	±	2.52	3.67	±	1.00
week2	6.33	±	2.31	5.00	±	3.61	5.67	±	0.58	4.67	±	1.53
week3	2.00	±	1.00	5.33	±	4.04	2.67	±	1.15	4.67	±	1.00
week4	5.00	±	1.73	6.33	±	1.15	5.33	±	2.52	6.67	±	1.00
week5	2.00	±	2.00	5.00	±	1.00	3.00	±	2.00	3.33	±	1.15
week6	2.33	±	2.52	5.33	±	2.52	1.33	±	0.58	5.00	±	1.53
week7	2.00	±	1.00	5.33	±	1.53	1.00	±	1.00	3.67	±	0.58
week8	2.67	±	1.53	3.67	±	0.58	3.33	±	0.58	4.00	±	0.58
week9	1.67	±	1.53	4.00	±	2.65	0.67	±	0.58	3.33	±	0.58
week10	2.00	±	1.00	5.00	±	2.65	2.00	±	2.65	2.67	±	1.00
week11	2.33	±	1.53	4.00	±	1.73	1.00	±	1.00	2.33	±	0.58
week12	2.00	±	1.00	2.33	±	1.53	2.00	±	1.00	2.00	±	1.73
week13	0.67	±	0.58	0.67	±	1.15	0.33	±	0.58	0.33	±	0.58
Total	35.00			55.33			32.00			46.33
Mean	2.692^b			4.256 ^a a =significant difference highly exist;			2.461 ^b b =significant difference exist;			3.564^a
L.S.D.	0.989						1.0415

Weeks	Seasons
	2018							2019
	Type 1 traditional trap (Mean ± SD)			Type 2 dry funnel trap (Mean ± SD)				Type 1 traditional trap (Mean ± SD)			Type 2 dry funnel trap (Mean ± SD)
week1	7.33	±	3.51	10.67		±	5.51	7.33	±	1.15	8.33	±		2.52
week2	11.33	±	5.51	11.67		±	3.06	10.33	±	3.06	8.33	±		2.08
week3	7.33	±	3.51	3.67		±	2.08	7.33	±	2.08	4.33	±		0.58
week4	11.33	±	2.52	12.33		±	2.08	12.00	±	4.58	12.33	±		4.04
week5	7.00	±	2.65	5.33		±	0.58	6.33	±	0.58	4.33	±		1.53
week6	7.67	±	4.04	6.33		±	1.15	6.33	±	4.04	4.00	±		1.00
week7	7.33	±	2.31	13.33		±	2.08	4.67	±	2.89	14.00	±		4.00
week8	6.33	±	2.08	4.33		±	3.21	7.33	±	2.08	4.67	±		2.52
week9	5.67	±	1.53	6.33		±	4.51	4.00	±	2.00	5.33	±		3.51
week10	7.00	±	3.46	6.33		±	1.15	4.67	±	2.31	4.33	±		1.15
week11	6.33	±	3.06	2.67		±	1.15	3.33	±	2.08	1.00	±		1.00
week12	4.33	±	2.08	2.00		±	1.00	4.00	±	1.00	2.00	±		2.65
week13	1.33	±	0.58	3.67		±	3.21	0.67	±	0.58	1.00	±		1.00
Total	90.33				88.67			78.33					74.00
Mean	6.948 ^a a =significant difference highly exist;				6.820 ^a			6.025 ^a					5.794 ^a
L.S.D.	1.811							1.782

Factor	Level	N	Mean ± SD
Year	2018	156	3.44	±	2.19	a^* * a=significant difference highly exist;
	2019	156	2.96	±	2.40	a
F. value			1.75
P. value			0.189
L.S.D.			0.733
Trap types	T1 Traditional	156	3.24	±	1.93	a
	T2 Dry funnel	156	3.15	±	2.01	a
F. value			0.09
P. value			0.769
L.S.D.			0.429
TRT	control	156	2.575	±	1.86	b^ b=significant difference exist;
	Nano gel pheromone.	156	3.910	±	2.06	a
F. value			5.73
P. value			0.0173
L.S.D.			0.4291
SEX	Female	156	1.99	±	0.35	a
	Male	156	1.21	±	0.30	b
F. value			22.27
P. value			0.0003
L.S.D.			0.350

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