Floral visitors of canola (<i>Brassica napus</i> L.) hybrids in Cerrado Mineiro region, Brazil

Fuzaro, Leandro; Andaló, Vanessa; Carvalho, Stephan Malfitano; Silva, Flávia Andrea Nery; Carvalho, Fabio Janoni; Rabelo, Laíce Souza

doi:10.1590/1808-1657001312018

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SCIENTIFIC ARTICLE, AGROECOLOGY • Arq. Inst. Biol. 86 • 2019 • https://doi.org/10.1590/1808-1657001312018 copy

Floral visitors of canola (Brassica napus L.) hybrids in Cerrado Mineiro region, Brazil

Visitantes florais em híbridos de canola (Brassica napus L.) na região do Cerrado Mineiro, Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

The objective of this study was to verify floral visitors of canola in the Triângulo Mineiro region, Minas Gerais, Brazil. A completely randomized plot design with two hybrids and 10 replicates was used, totaling 20 plots. The survey of floral visitors was made during 10 days. Faunal analyses of the collected species were performed based on frequency, constancy, dominance, and diversity. A total of 2,676 individuals belonging to 13 species of bees of two families (Apidae and Halictidae) were collected. The diversity index found among hybrids was similar (1.28 in hybrid 61 and 1.50 in hybrid 433). The species Apis mellifera Linnaeus, 1758 (Hymenoptera: Apidae), Paratrigona lineata (Lepeletier, 1836) (Hymenoptera: Apidae), and Trigona spinipes (Fabricius, 1793) (Hymenoptera: Apidae) were the most abundant and constant in the crops during all the evaluated days for both hybrids. So, it is important that efforts be made to conserve natural areas close to crops in order to provide resources for the permanence of floral visitors in the area.

KEYWORDS:
Apis mellifera; Apidae; faunistic index; Halictidae; native bees

Family	Subfamily	Tribe	Species	Hyola 61				Hyola 433
Family	Subfamily	Tribe	Species	N	F (%)	C (%)	D	N	F (%)	C (%)	D
Apidae	Apinae	Apini	Apis mellifera	464	40.52	W	D	581	37.95	W	D
		Meliponini	Paratrigona lineata	403	35.20	W	D	606	39.58	W	D
			Trigona spinipes	232	20.26	W	D	293	19.14	W	D
			Tetragona clavipes	0	0.00	-	-	2	0.13	Z	N
	Xylocopinae	Exomalopsini	Exomalopsis analis	14	1.22	Y	N	16	1.05	Y	N
			Exomalopsis fulvofasciata	0	0.00	-	-	1	0.07	Z	N
			Exomalopsis auropilosa	4	0.35	Z	N	4	0.26	Z	N
Halictidae	Halictinae	Augochiorini	Augochlora sp. 1	5	0.44	Z	N	3	0.20	Z	N
			Augochlora sp. 2	18	1.57	Y	N	21	1.37	Y	N
			Augochloropsis sp. 1	1	0.09	Z	N	0	0.00	-	-
			Augochloropsis sp. 2	1	0.09	Z	N	1	0.07	Z	N
			Augochloropsis sp. 3	0	0.00	-	-	1	0.07	Z	N
			Augochloropsis sp. 4	3	0.26	Z	N	2	0.13	Z	N
			TOTAL	1,145	100			1,531	100
			S	10				12
			ID	1.28				1.50
			1/S	10.00				8.33

Day	Hybrid Hyola 61								Hybrid Hyola 433
Day	A. mellifera		P. lineata		T. spinipes		Other species		A. mellifera		P. lineata		T. spinipes		Other species
	N	F (%)	N	F (%)	N	F (%)	N	F (%)	N	F (%)	N	F (%)	N	F (%)	N	F (%)
1	50	51.02	19	19.39	22	22.45	7	7.14	73	57.94	19	15.08	26	20.63	8	6.35
2	65	56.03	24	20.69	19	16.38	8	6.90	74	51.39	46	31.94	17	11.81	7	4.86
3	61	50.41	32	26.45	23	19.01	5	4.13	59	40.14	43	29.25	42	28.57	3	2.04
4	48	32.21	63	42.28	33	22.15	5	3.36	69	38.33	74	41.11	31	11.67	6	3.33
5	38	41.76	16	17.58	34	37.36	3	3.30	65	44.83	29	20.00	45	31.03	6	4.14
6	31	27.68	40	35.71	37	33.04	4	3.57	48	28.92	68	40.96	42	25.30	8	4.82
7	22	20.95	59	56.19	17	16.19	7	6.67	36	19.35	103	55.38	39	20.97	8	4.30
8	43	34.96	39	31.71	33	26.83	8	6.50	62	33.88	79	43.17	35	19.13	7	3.83
9	52	54.74	35	36.84	6	6.32	2	2.11	50	39.37	65	51.18	8	6.30	4	3.15
10	54	38.57	76	54.29	8	5.71	2	1.43	45	33.09	80	58.82	8	5.88	3	2.21
Total	464 a		403 b		232 c		51 d		581 a		606 a		293 b		60 c

Time	Hybrid Hyola 61 (Number of individuals)				Hybrid Hyola 433 (Number of individuals)
Time	Apis mellifera	Paratrigona lineata	Trigona spinipes	Other species	Apis mellifera	Paratrigona lineata	Trigona spinipes	Other species
07h00	5 a	1 b	2 ab	0 c	19 a	1 b	5 b	0 c
08h00	82 a	19 b	33 c	4 d	79 a	14 b	57 c	7 b
09h00	167 a	34 b	79 c	9 d	199 a	41 b	97 c	9 d
10h00	124 a	49 b	66 b	16 c	161 a	77 b	74 b	16 c
13h00	45 a	124 b	30 a	8 c	52 a	203 b	25 c	10 d
14h00	20 a	101 b	16 a	10 c	38 a	161 b	21 c	14 c
15h00	21 a	75 b	6 c	4 c	33 a	109 b	14 c	4 d

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[1] *Corresponding author: fuzaro.leandro@gmail.com