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Bragantia

On-line version ISSN 1678-4499

Bragantia vol.29 no.unico Campinas Jan. 1970

http://dx.doi.org/10.1590/S0006-87051970000100032 

Variações sazonais da migração de Myzus persicaeem Campinas nos anos de 1967 a 19691

 

Seazonal variation of Myzus persicae migrations at Campinas, during the years of 1967 to 1969

 

 

C. L. Costa2, 3

Engenheiro-agrônomo, Seção de Virologia, Instituto Agronômico

 

 


SINOPSE

Para estudar as variações sazonais do número de migrantes de Myzus persicae (Sulz.) em Campinas, foram utilizadas armadilhas de dois tipos, para a sua coleta: a de sucção e a de água.
Fêmeas vivíparas, partenogenéticas, aladas, da espécie, foram coletadas em todas as semanas durante os anos de 1967, 1968 e 1969. A presença de alguns raros machos foi também registrada.
A armadilha de água coletou sempre maior número de indivíduos do que a de sucção, durante todo o período de observações. Entretanto, as curvas que representam as variações semanais e mensais do número de migrantes da espécie, construídas com as amostras obtidas por ambos os tipos de armadilhas, têm a mesma forma. As maiores migrações se deram nos meses de maio a setembro.
A proporção de exemplares de M. persicae em relação ao total das espécies coletadas foi sempre maior na armadilha de água do que na de sucção.


SUMMARY

A study was made of the seazonal variations in the numbers of migrants of the aphid Myzus persicae (Sulzer) at Campinas, State of São Paulo, by sampling aerial populations from 1967 through 1969, with a suction trap and a yellow water trap. Weekly catches were recorded for both traps and summed up to give month totals.
Alate viviparous parthenogenetic females of Myzus persicae were caught every week of the years of 1967 to 1969. This is an evidence that in the Campinas region (22° 50' S) there was no limiting factor to suppress parthenogenetic reproduction and inhibit flight during the period of observations. However, the trapping of males seems to indicate that an holocyclic multiplication of Myzus persicae may also exist. Where the oviparous female or other morphs of the species does also accur at Campinas, is not known.
The period when most of migration took place as revealed by samples taken by both traps occurred from May to September. The yellow water trap caught more Myzus persicae than the suction trap, but curves of annual distribution of alates trapped have the same shape. The ratio between the numbers of this aphid in the two types of traps remained rather constant, throughout two years, varying from 2.3 to 6.0. This means that water trap catches were related to estimates of aerial density produced by the suction trap, a more precise apparatus for this determination, which does not exert attraction to the aphid species (20). Thus water trap may be used to the best advantage to collect Myzus persicae where an electricity supply to run the suction trap is lacking and / or when numbers of alate in the air are low.
The proportion of Myzus persicae in relation to the total of species caught was also higher for the yellow water trap. In February, March, June, July and October of 1967 and June and July of 1968, 50% of aphid species caught in the water trap were Myzus persicae. It represents 35% of total caught from May to October of 1969. In the suction trap the highest proportion of this species was 20% in June, 1968. This difference is attributed to the selective attractiveness of yellow color to aphia species.


 

 

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LITERATURA CITADA

1. BROADBENT, L. Aphis migration and the efficiency of the trapping method. Ann. appl. Biol. 35:379-394, 1948.         [ Links ]

2. ________. The correlation of aphid numbers with the spread of leaf roll and rugose mosaic in potato crops. Ann. appl. Biol. 37:58-65, 1950.         [ Links ]

3. ________& HOLLINGS, M. The influence of heat on some aphids. Ann. appl. Biol. 38:577-581, 19,51.         [ Links ]

4. CLOSE, R.; SMITH, H. C. & LOWE, A. D. Cereal virus warning system. Commonw. phytopath. News 10:7-9, 1964.         [ Links ]

5. COSTA, A. S.; CARVALHO, ANA MARIA B.; COSTA, C. L. & NAGAI, H. Moléstias de vírus do tomateiro. Boletim do Campo 183:8-26, 1964.         [ Links ]

6. COSTA, C. L. Nota prévia sobre a redução da disseminação dos virus de plantas, pelo efeito repelente de certas cores aos afídios vectores. Revta. Soc. bras. Fitopatologia 3:49-50, 1969.         [ Links ]

7. ________. Ocorrência, no Estado de São Paulo, de forma sexuada de Myzus persicae, importante vector de vírus de plantas. Revta. Soe. bras. Fitopatologia 3:59-60, 1969.         [ Links ]

8. EASTOP, V. F. Selection of aphid species by different kinds of insect traps. Nature, Lond. 176:936, 1955.         [ Links ]

9. HEATHCOTE, G. D. The comparison of yellow cylindrical, flat and water traps, and of Johnson suction traps, for sampling aphids. Ann. appl. Biol. 45:133-139, 1957.         [ Links ]

10. ________; PALMER, J. M. P. & TAYLOR, L. R. Sampling for aphids by traps and by crop inspection. Ann. appl. Biol. 63: 155-166, 1969.         [ Links ]

11. HULL, R. The spray warning scheme for control of sugar beet yellows in England. Summary of results between 1959-66. PI. Path. 17:1-10, 1968.         [ Links ]

12. JOHNSON, C. G. A suction trap for small airbone insects which automatically segregates the catch into successive hourly samples. Ann. appl. Biol. 37:80-91, 1950.         [ Links ]

13. LEWIS, T. The effects of an artificial windbreak on the aerial distribution of flying insects. Ann. appl. Biol. 55:503-512, 1965.         [ Links ]

14. MOERICKE, V. Eine Farbfalle zur Kontrolle des Fluges von Blattläusen insbesondere der Pfirsichblattlaus Myzodes persicae (Sulz.). NachrBl. dt. PflSchutzdienst, Stuttgart, 3:23-24, 1951.         [ Links ]

15. ________. Neue Untersuchungen über das Farbsehen der Homopteren. In: Proc. Sec. Conf. Potato Virus Diseases, Lisse-Wageningen, 1954. Wageningen, H. Veenman & Zonen, 1955. p. 55-69.         [ Links ]

16. NEITZEL, K. & RAEUBER, A. Ökologische Untersuchungen an Aphiden. I. Über die Temperaturvertráglichkeit virginoparer Myzus persicae bei konstanten Temperaturen auf Kohlrüben. Ent. exp. & appl. 11:115-132, 1968.         [ Links ]

17. RIS LAMBERS, D. H. Potato aphids and virus diseases in the Netherlands. Ann. appl. Biol. 42:355-360, 1955.         [ Links ]

18. STROYAN, H. L. G. idenfication of aphids living on citrus. PI. Prot. Bull. F.A.O. 9:45-65, 1961.         [ Links ]

19. TAYLOR, L. R. An improved suction trap for insects. Ann. appl. Biol. 38:582-591, 1951.         [ Links ]

20. ________. The absolute efficiency of insect suction traps. Ann. appl. Biol. 50:405-421, 1962.         [ Links ]

 

 

Recebido para publicação em 25 de março de 1970.

 

 

1 Trabalho parcialmente subvencionado pela Fundação de Amparo à Pesquisa do Estado de São Paulo (C. Agron. 65/449) e pelo Banco Nacional do Desenvolvimento Econômico (Contrato Fundrepo — 42: Projeto 9).
2 Bolsista do Conselho Nacional de Pesquisas.
3 O autor expressa seus agradecimentos ao Dr. A. S. Costa, Chefe da Seção de Virologia, pelas sugestões oferecidas na discussão e interpretação dos resultados dêste trabalho.