Results: 51

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

Braz. j. biol; 84 (), 2024
The red gum lerp psyllid, Glycaspis brimblecombei Moore, 1964 (Hemiptera: Aphalaridae), an insect pest originating in Australia and which feeds only on Eucalyptus L'Hér. (Myrtales: Myrtaceae) plants, has spread to several countries. The populations of this insect commonly reach high populations on Eucal...

Mortality of the cotton boll weevil in drip and sprinkler irrigated cotton crops

Braz. j. biol; 83 (), 2023
Abstract The cotton boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is a key cotton crop pest in Brazil. Adverse climatic factors, such as high temperatures and low soil moisture, dehydrate oviposited cotton squares (bud flowers) on the ground and cause high mortality of its ...

Biology of Glyphepomis dubia Campos & Souza, 2016 (Hemiptera: Pentatomidae) and the parasitoids Telenomus podisi Ashmead, 1893 and Trissolcus basalis (Wollaston, 1858) (Hymenoptera: Platygastridae) on rice

Braz. j. biol; 83 (), 2023
Abstract The life cycle of stink bug, Glyphepomis dubia and the development of two egg parasitoids (Telenomus podisi and Trissolcus basalis) were studied at the Federal University of Maranhão, at 26 ± 2oC, relative humidity (RH) of 60 ± 10% and 12h photophase. Individuals used in the study were collec...

Evaluation of the effectiveness of Neoseiulus cucumeris (Oudemans) as a predator of Tuta absoluta (Meyrick)

Braz. j. biol; 82 (), 2022
The leaf miner, Tuta absoluta is continue to be a serious threat to solanaceous plants, especially tomato plant worldwide. Tomato crop in Saudi Arabia has been recently affected by T. absoluta, which is difficult to control due to its unique biological features, such as high fecundity and its potential t...

Pre-oviposition behavior of Aedes aegypti in the field: first report of eggs laying on water surface in an artificial breeding site in the city of Rio de Janeiro

Rev. patol. trop; 51 (3), 2022
This study presents the first report of Aedes aegypti laying eggs on the water surface of an artificial breeding site in the field. This report occurred in the city of Rio de Janeiro inside a white bucket containing 11 liters of rainwater. Conspecific larvae had previously been found in this bucket. From...

Alimentación, comportamiento de oviposición, ciclo de vida y enemigos naturales de Hamadryas feronia (Nymphalidae) en la Amazonía del Perú

Rev. biol. trop; 69 (2), 2021
Resumen Introducción: Hamadryas feronia feronia, se mimetiza sobre las cortezas de los árboles y suele emitir sonidos al volar que llaman la atención; posee un buen potencial para los bionegocios (exportación, elaboración de artesanías y centros turísticos de crianza). Sin embargo, aún se descono...

Population growth of Tetranychus urticae Koch (Acari: Tetranychidae) and predation rate of the pest mite by Neoseiulusidaeus Denmark & Muma (Acari: Phytoseiidae) in two grape cultivars

Arq. Inst. Biol; 88 (), 2021
The two-spotted spider mite, Tetranychus urticae Koch, has caused significant damage to vineyards in the valley of the São Francisco River in Brazil. Neoseiulus idaeus Denmark & Muma is one of the most abundant species of predatory mites on vines in this region. This study evaluated the population growt...

Fecundity of chub mackerel (Scomber japonicus Houttuyn, 1782) in the Aegean Sea

Braz. j. biol; 81 (2), 2021
This study was carried out in April - June 2014 to determine absolute fecundity (F) of the chub mackerel (Scomber japonicus Houttuyn, 1782) in Saros Bay (Aegean Sea, Turkey). The relations between the absolute fecundity and total length, total weight and age of the chub mackerel females were estimated as...

Reproduction of Hypoptopoma inexspectatum (Holmberg, 1893) (Siluriformes, Loricariidae) in the Southern Pantanal floodplain, upper Paraguay River basin, Brazil

Braz. j. biol; 81 (2), 2021
This work aimed to describe the reproductive biology of Hypoptopoma inexspectatum in southern Pantanal. A total of 538 individuals were sampled and analyzed from February 2009 through January 2011 in southern Pantanal. We did not observe differences in sex-ratio, and both sexes presented positive allomet...