The Biology and Laboratory Rearing of a New Leptopiine Weevil, a Pest of Legumes in Queensland

Elder, R. J.; Brown, Justin D.; Wicks, R.

doi:10.1111/j.1440-6055.1979.tb00817.x

Cited by 5 publications

(12 citation statements)

References 1 publication

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“…The latter attack pasture legumes but have not become established on agricultural land near Tolga. Larvae of a leptopine weevil studied by Elder et al (1979) pupate from August onwards and by late September adults are present in the soil. They emerge immediately after the first isolated heavy storms, which may occur as early as October.…”

Section: High Soil Temperatures and Pupationmentioning

confidence: 99%

Development of larvae of the whitefringed weevil,Graphognathus leucoloma(Coleoptera: Curculionidae), in northern Queensland

Gough

Brown

1991

Bull. Entomol. Res.

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Growth of larvae of the whitefringed weevil, Graphognathus leucoloma (Boheman), was studied in the laboratory and on various crops in pots in a shadehouse at Kairi, on the Atherton Tableland in north Queensland. In the laboratory at 25.5 ± 1°C there were 11 instars for which head capsule widths and weights were recorded. The first instar weighed 0.14 mg. This was a nonfeeding stage capable of prolonged survival, and after 10 weeks in soil without food 60% survived. When provided with carrot (Daucus carota) larvae grew to 2 or 3 mg after 6 to 7 weeks, then increased rapidly in weight reaching 140 mg after 120 days. At 25.5°C the average time from first instar to adult was 311 days, due in part to a long prepupal period. Larval growth was measured on the roots of peanut (Arachis hypogaea) plants in pots in summer and winter. Under summer conditions (mean soil temperature 23.3°C) larvae reached 140 mg in about 120 days, similar to that in the laboratory on carrot. These fully grown larvae remained in the pots over the mild winter without pupating. Larvae developing in autumn/winter grew more slowly, but the fully grown larvae were then exposed to high spring (early summer) temperatures and soon pupated, the average time from first instar to adult being 273 days. The indications are that temperatures above 25°C quickly precondition mature larvae from Tolga for pupation, thus explaining the broad timing of adult emergence in the field in north Queensland. On different plants common near Tolga, larvae grew most quickly on peanuts and on the pasture legumes dolichos (Lablab purpureus) and stylosanthes (Stylosanthes guianensis). Survival on maize equalled that on peanuts (46.5% in sterilized soil) but growth was less. Larval survival and growth on the grass crowsfoot (Eleusine indica), and (surprisingly) on the pasture legume glycine (Neonotonia wightii) was very poor.

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Section: High Soil Temperatures and Pupationmentioning

confidence: 99%

Development of larvae of the whitefringed weevil,Graphognathus leucoloma(Coleoptera: Curculionidae), in northern Queensland

Gough

Brown

1991

Bull. Entomol. Res.

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“…Early in the development of outbreaks, swarms have been recorded in the Gulf, Gulf Rivers and/or Barkly Tableland within or near regions of cracking clay soils (Fig. 1) (Key 1938;Bullen 1969;Elder et al 1979;Elder 1997;Australian Plague Locust Commission, unpubl. records, 1987-1998.…”

Section: Introductionmentioning

confidence: 99%

“…The spur-throated locust, Austracris guttulosa (Walker) (formerly Nomadacris guttulosa [Walker] [ Key & Rentz 1994]), has long been recognised as an occasional serious pest of crops in Australia's north (Weddell 1937;Key 1938;Bullen 1969;Elder et al 1979) and temperate south-east (Casimir & Edge 1979). Bullen (1969) found that five of the seven outbreaks between 1935 and 1968 began in years of average or above average rainfall following drought.…”

Section: Introductionmentioning

confidence: 99%

“…During both the 1970s and 1990s, outbreaks intensified for several years with swarms becoming progressively more widespread. Some swarms migrated to the cropping areas of central and southern Queensland and northern New South Wales where they reproduced and the resulting generation caused serious crop loss (Bullen 1975;Elder et al 1979;Hunter et al 1999).…”

Section: Introductionmentioning

confidence: 99%

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Rainfall sequences leading to population increases of Austracris guttulosa (Walker) (Orthoptera: Acrididae) in arid north‐eastern Australia

Hunter

Elder

1999

Australian Journal of Entomology

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In northern Australia, the spur‐throated locust, Austracris guttulosa, has one generation per year with locusts surviving the dry season as immature adults. Adults lay after rain early in the wet season, mainly between October/November and January. On cracking clay soils, a fall of > 40 mm is required to allow oviposition, but to ensure survival of the resulting offspring, there must be follow‐up rain of > 40 mm at the oviposition site within 6 weeks. Populations increase during years when more than 50% of the arid zone and Gulf receive both initial and two or more follow‐up rains at intervals of ≤ 6 weeks. During the 1970s and 1990s, there were two periods of 3–5 years of such increase, and a large number of swarms resulted.

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“…Además, las crías sobre dietas artificiales y semiartificiales no han resultado exitosas (Zenner, 1990). Por otra parte, los sistemas de cría en laboratorio desarrollados para otras especies de la subfamilia Entiminae a la que pertenece P. vorax no se adecuan a los hábitos y requerimientos ecológicos del gusano blanco (Elder et al, 1979;Shimoji y Yamagishi, 2002;Fisher, 2006).…”

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Método de cría en laboratorio del gusano blanco de la papa Premnotrypes vorax (Coleoptera: Curculionidae)

Pérez

Garza

Argüelles-Cárdenas

2009

CTA

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El gusano blanco de la papa Premnotrypes vorax es considerado uno de los insectos plaga más limitantes del cultivo de la papa en Colombia. En este trabajo se describe un método para la cría de P. vorax en condiciones de laboratorio, con el que se puede obtener individuos de todos los estados de desarrollo para su uso con propósitos experimentales. Adicionalmente, se determinó la longevidad y fecundidad de los adultos para establecer el potencial de crecimiento de la cría en las condiciones evaluadas. Los adultos se mantuvieron en recipientes plásticos provistos de una capa de suelo, follaje de papa para la alimentación y pajillas para la oviposición. Las pajillas con posturas se desinfectaron y luego se incubaron en cajas de Petri en condiciones de temperatura y humedad controladas. Las condiciones más adecuadas para el mantenimiento de los individuos durante el período larva-adulto se determinaron evaluando dos tipos de alimento para las larvas, tres sustratos para pupar y tres densidades de larvas por tubérculo. Las mejores condiciones se obtuvieron con tubérculos de la variedad parda pastusa (> 80 g), sobre un sustrato de suelo esterilizado y turba en proporción 3:1 y a una densidad no mayor a diez larvas por tubérculo. Con este método de cría se podrían esperar de dos a tres generaciones del insecto por año con una tasa de incremento cercana al 17% por generación. Este método de cría se constituye en una herramienta para facilitar la realización de estudios bioecológicos del insecto y evaluar métodos para su control. A laboratory method for rearing Andean potato weevil Premnotrypes vorax (Coleoptera: Curculionidae) The Andean potato weevil, Premnotrypes vorax, is considered one of the most important pests of the potato crops in Colombia. In this work, a laboratory method for rearing P. vorax is described. All developmental stages of the insect can be obtained with this method, for experimental purposes. In addition, adult longevity and fecundity were determined for the establishment of the potential growth of the colony under the evaluated conditions. Adults were kept in plastic boxes, which were provided with a soil layer, potato leaves for feeding and dry straw for oviposition. The dry straw with egg clutches were disinfected and incubated in Petri dishes under controlled conditions of temperature and humidity. The most suitable maintaining conditions for individuals in the period from larva to adult were determined by evaluating two different feed types for larvae, three pupation substrates and three larval densities per tuber. The best conditions were obtained with potato tubers from the “parda pastusa” variety (> 80 g), on sterilized soil and peat moss in 3:1 ratio, and less those ten larvae per tuber. This rearing method can produce two or three generations per year, with an increase rate close to 17% per generation. This rearing method becomes a useful tool for bioecological studies, and to evaluate control methods for this insect.

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The Biology and Laboratory Rearing of a New Leptopiine Weevil, a Pest of Legumes in Queensland

Cited by 5 publications

References 1 publication

Development of larvae of the whitefringed weevil,Graphognathus leucoloma(Coleoptera: Curculionidae), in northern Queensland

Development of larvae of the whitefringed weevil,Graphognathus leucoloma(Coleoptera: Curculionidae), in northern Queensland

Rainfall sequences leading to population increases of Austracris guttulosa (Walker) (Orthoptera: Acrididae) in arid north‐eastern Australia

Método de cría en laboratorio del gusano blanco de la papa Premnotrypes vorax (Coleoptera: Curculionidae)

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