Produção Nacional
Revisado por pares
Sexual dimorphism of Pseudotectococcus rolliniae Hodgson & Gonçalves 2004 (Hemiptera Coccoidea Eriococcidae) influences gall morphology on Rollinia laurifolia Schltdl. (Annonaceae)
2005; Firenze University Press; Volume: 18; Issue: 2 Linguagem: Inglês
10.1080/03946975.2005.10531219
ISSN1970-9528
AutoresSamuel J. M. R. Gonçalves, Rosy Mary dos Santos Isaías, Fernando Henrique Aguiar Vale, Geraldo Wilson Fernandes,
Tópico(s)Insect-Plant Interactions and Control
ResumoThe male and female of Pseudotectococcus rolliniae Hodgson & Gonçalves 2004 induce leaf galls on Rollinia laurifolia Schltdl. The galls occur in similar proportions but are morphologically distinct. This study recorded the occurrence and characterized both morphologically and morphometrically the galls on R. laurifolia. In addition, we evaluated the impact of galls induced by P. rolliniae males and females on the differentiation of the host plant leaf tissues. Galls induced by females were spherical, with an average volume of 36.5 mm1(± 16.9), whereas galls induced by males were conical with an average volume of 3.5 mm3 (± 2.6). Most of the sampled leaves were galled (93.8%). The presence of more than 5 galls per leaf caused the leaf area to be reduced on average by 57.3% compared with ungalled leaves. Leaves with the majority of galls induced by females had a greater area reduction than leaves with the majority of galls induced by males. The reduction of leaf area was directly related to the translocation of photoassimilates to gall sites and their utilization for gall growth. The longer life cycle of the P. rolliniae female and its sessile habit may determine the higher differentiation of leaf tissues involved in the larger growth of these galls.
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