Longevity and fecundity of Dichroplus maculipennis (Orthoptera: Acrididae: Melanoplinae) at non-outbreaking and outbreaking situations.

MARIOTTINI YANINA; DE WYSIECKI MARÍA LAURA; LANGE, CARLOS E.

REVISTA BRASILEIRA DE ENTOMOLOGIA

SOC BRASILEIRA ENTOMOLOGIA

Lugar: Curitiba; Año: 2011 vol. 55 p. 435 - 438

0085-5626

Dichroplus maculipennis is one of the most characteristic and damaging grasshopper species of Argentina, mainly in areas of the Pampas and Patagonia regions. We estimated and compared the longevity and fecundity of adult female D. maculipennis under controlled conditions (30º C, 14L:10D, 40% RH) from individuals collected as last instar nymphs (VI) in the field and with a known recent history of low and high density conditions.  Densities of D. maculipennis at the collecting sites were 0.95 individuals per m2 in 2006 and 46 ind/m2 in 2009, representing non-outbreaking and outbreaking situations, respectively. Adult female longevity in 2006 (67.96 ± 3.2 days) was significantly higher (p