Data/hora: 07/06/2024 14:59:25

Biblioteca(s): | Embrapa Soja.
Data corrente: | 17/01/2007
Data da última atualização: | 08/12/2011
Autoria: | HIROSE, E.; PANIZZI, A. R.; CATTELAN, A. J.
Título: | Effect of relative humidity on emergence and on dispersal and regrouping of first instar Nezara viridula (L.) (Hemiptera: Pentatomidae).
Ano de publicação: | 2006
Fonte/Imprenta: | Neotropical Entomology, Pelotas, v. 35, n. 6, p. 757-761, Nov./Dec. 2006.
Idioma: | Inglês
Conteúdo: | Laboratory studies with 1st instar of southern green stink bug, Nezara viridula (L.)ldicated that relative humidity (RH) greatly affected nymph emergence and survivorship up to the 2 nd instar, reaching the maximum value (~ 90%) with RH of> 80%. At 60% RH, 60% of the nymphs energed and survived, while with 0% RH only ~ .15% of eggs hatched, and most nymphs died. Emerged nymphs from egg masses placed in plastic boxes with a gradient of humidity remained on egg shells for ca. one day. After this period, they dispersed and regrouped on top of shells 6.8+- :0.67 times, until they abandoned the shells toward the source of humidity, avoiding the water-saturated areas. Duration taken for each rearrangement (dispersal + regroup) increased with time, with a range of ~ 26 min to 44 min. The mean duration of the grouping behavior on egg shells after each rearrangement decreased from ~ 102 min (1 st) to 24 min (6th and last grouping). The rearrangement behavior of 1 st instars on top of egg shells apparently compensates for the water loss of nymphs.
Palavras-Chave: | Effect of relative humidity on emergence and on dispersal and regrouping of first instar Nezara viridula.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/49802/1/26855.pdf
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (26855-1) - UPC - AP - -- -  -  -  - DIS