Influence of temperature and rainfall on the population dynamics of Glycaspis brimblecombei and Psyllaephagus bliteus in Eucalyptus camaldulensis plantations

Abstract

The work analyzes the effect of temperature and rainfall on the population dynamics of Glycaspis brimblecombei (Hemiptera: Aphalaridae) and its parasitoid Psyllaephagus bliteus (Hymenoptera: Encyrtidae) in a Eucalyptus camaldulensis (Myrtaceae) plantation in São Paulo State, Brazil. During the study 53 yellow sticky traps were installedand 53 branches were collected from a 19 ha plot of E. camaldulensis plantation per evaluation. A total of 42 evaluations was made from January 2006 to 2008. The number of adults of G. brimblecombei and P. bliteus caught in the yellow sticky traps as well as the immature and mummies of the parasitized psyllids on E. camaldulensis leaves varied with seasons. The population also varies according to the season, with a peak in the winter and decreases in the summer when temperature and rainfall increase. The G. bramble combei and P. bliteus populations were inversely correlated with temperature and rainfall. These results are discussed as potential limitations to the establishment of the pest and its parasitoid.

Incidência por Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) e Glycaspis brimblecombei (Hemiptera: Aphalaridae) em clones de eucalipto

“…Quanto ao total de insetos por coleta, houve oscilação da população entre os meses de maio a agosto de 2017, decrescendo drasticamente a população até janeiro de 2018 e voltando a oscilar a partir de fevereiro de 2018 (Figura 2). brimblecombei, observou-se uma redução acentuada na abundância do inseto em plantas de Eucalyptus (Oliveira et al, 2012;Ferreira-Filho et al, 2017). Com isso, apesar de não ter ocorrido correlação significativa para os elementos climáticos estudados, observou-se uma tendência de a população da praga reduzir com a chegada do período chuvoso, sendo um indicativo que esta variável interfere no comportamento do psilídeo-de-concha.…”

High population levels lead Glycaspis brimblecombei (Hemiptera: Aphalaridae) to unrecorded feeding and oviposition behaviors on Eucalyptus urograndis plants

“…This parasitoid was found, for the first time in Brazil, in 2003 in Piracicaba, state of São Paulo, shortly after the detection of G. brimblecombei (Berti Filho et al, 2003). However, its population has remained low in the field in Brazil (Ferreira-Filho et al, 2008;Silva et al, 2013;Ferreira-Filho et al, 2017).…”

“…Glycaspis brimblecombei is a pest with great potential for invasion, as reinforced by international agencies, including the Food and Agriculture Organization of the United Nations (FAO) (Reguia and Peris-Felipo, 2003;Ferreira-Filho et al, 2017;Mannu et al, 2018) and has spread across many different regions of the world (Valente and Hodkinson, 2009;Cuello et al, 2018). The countries with reports of G. brimblecombei include Algeria, Ethiopia, Madagascar, Mauritius, Morocco, South Africa, Tunisia, and Zambia, in Africa; Israel and Turkey in Asia; France, Greece, Italy, Montenegro, Portugal, and Spain in Europe; Mexico and the United States of America in North America; Australia and New Zealand in Oceania; Argentina, Brazil, Chile, Colombia, Ecuador, Peru, Uruguay, and Venezuela in South America (Burckhardt et al, 2008;Laudonia and Garonna, 2010;Malumphy et al, 2013;Bella and Rapisarda, 2013;Tsagkarakis et al, 2014;Attia and Rapisarda, 2014;Karaca et al, 2015;Bouvet et al, 2005;Chungu et al, 2017;Yirgu and Anjulo, 2019).…”

Anatomical indicators of Eucalyptus spp. resistance to Glycaspis brimblecombei (Hemiptera: Aphalaridae)

“…Control methods for G. brimblecombei should focus on breeding and planting resistant eucalypt varieties, especially in areas with large G. brimblecombei populations ( Jere et al, 2020 ). Different environmental conditions influence host plant susceptibility and infestation levels in the field ( Ferreira-Filho et al, 2017 ; Bush, Slippers & Hurley, 2020 ).…”