Biological and demographic parameters of Tegolophus brunneus (Acari: Eriophyidae) in citrus

Autor(es)

de Morais, Matheus Rovere ^[1] ; Zanardi, Odimar Zanuzo ^[2] ; de Andrade, Daniel Junior ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Coll Agr & Vet Sci UNESP FCAV, Dept Crop Protect, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, SP - Brazil

^[2] Fund Citrus Protect Fundecitrus, Dept Res & Dev, Vila Melhado, BR-14807040 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Experimental and Applied Acarology; v. 79, n. 1, p. 35-46, SEP 2019.
• Citações Web of Science: 0

Resumo

The brown citrus rust mite, Tegolophus brunneus Flechtmann (Acari: Eriophyidae), causes citrus rust, as does Phyllocoptruta oleivora (Ashmead) (Acari: Eriophyidae). As the citrus rust damage has intensified in recent years and T. brunneus has been reported in high population levels in several regions of Brazil, this mite has caused concern to growers and technicians. Because T. brunneus has been little studied and its bioecological characteristics are unknown, this study investigated the biological and demographic parameters of T. brunneus on citrus fruits under laboratory conditions. Our results showed that the egg incubation period and viability were 3.0 and 94.5%, respectively. The larval and nymphal stage durations were 1.1 and 2.8 days, respectively. The development time of the immature stage was 6.9 days, with 92.3% survival. When females and males were maintained together, the sex ratio of offspring was 0.7; virgin females produced only males. The pre-oviposition (from adult emergence to the first egg) and total pre-oviposition (egg-to-egg) periods were 1.6 and 8.5 days, respectively. Fecundity was 8.5 eggs, and female and male longevities were 13.2 and 11.4 days, respectively. The estimate of demographic parameters indicated that the R-o and T of T. brunneus were 6.45 offspring and 13.0 days, and r and lambda were 0.142 and 1.153 day(-1), respectively. These results suggest that T. brunneus has high growth potential on citrus trees. Therefore, management strategies may be required to reduce the population levels and damage caused by T. brunneus in citrus groves. (AU)

• Processo FAPESP: 16/03992-2 - Distribuição, bioecologia e manejo do ácaro-marrom-dos-citros Tegolophus brunneus Flechtmann (Acari: Eriophyidae)
• Beneficiário: Matheus Rovere de Morais
• Modalidade de apoio: Bolsas no Brasil - Doutorado