Evaluation of entomopathogenic nematodes for control of <i>Cosmopolites sordidus</i> Germar (Coleoptera: Curcilionidae), a pest of bananas in Australia

Treverrow, N.; Bedding, R.A.; Dettmann, EB; Maddox, C. D. A.

doi:10.1111/j.1744-7348.1991.tb04852.x

Cited by 26 publications

(8 citation statements)

References 9 publications

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“…Studies have shown that adults of some weevil species are susceptible to EPNs including the banana weevil (Treverrow et al, 1991). However, most studies have shown that the adults are not particularly susceptible.…”

Section: Discussionmentioning

confidence: 99%

First report of entomopathogenic nematodes from Tanzania and their virulence against larvae and adults of the banana weevil Cosmopolites sordidus (Coleoptera: Curculionidae)

Mwaitulo

Haukeland

Sæthre

et al. 2011

Int. J. Trop. Insect Sci.

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A survey on the occurrence of entomopathogenic nematodes (EPNs) was conducted in selected banana fields from three regions in Tanzania, namely Mbeya (Southern Highlands), Morogoro (Lowland) and Pwani (Coast). The main objective of this study was to isolate EPNs naturally occurring in banana fields in Tanzania and to test their effect on banana weevil (Cosmopolites sordidus Germar 1824). We report for the first time the presence of EPNs in Tanzania where four (4.4%) out of 90 samples contained nematodes in the genera Steinernema and Heterorhabditis. EPNs were only isolated in the coastal region in soils with a high sand content. The virulence of nine EPN isolates was tested against larvae and adults of C. sordidus. All isolates caused mortality of the larval stages, whereas the adults appeared resistant to nematode infection. Larval mortality was found to increase significantly with increasing nematode dose. It was also shown that nematodes were able to penetrate and establish in the banana weevil larvae in increasing numbers with increasing nematode dose. The study indicates the potential for including EPNs in management strategies of banana weevil.

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Section: Discussionmentioning

confidence: 99%

First report of entomopathogenic nematodes from Tanzania and their virulence against larvae and adults of the banana weevil Cosmopolites sordidus (Coleoptera: Curculionidae)

Mwaitulo

Haukeland

Sæthre

et al. 2011

Int. J. Trop. Insect Sci.

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“…The use of entomopathogenic nematodes (EPNs) for controlling the banana weevil has been studied mainly with regard to the adult and the final larval instar (Kermarrec and Maulleon 1989;Figueroa 1990;Pen˜a and Duncan 1991;Treverrow et al 1991;Rosales and Sua´rez 1998;Padilla-Cubas 2003). However, no work has been done on the susceptibility of the neonate larvae to these nematodes.…”

Section: Introductionmentioning

confidence: 99%

Laboratory efficacy against neonate larvae of the banana weevilCosmopolites sordidusof two indigenous entomopathogenic nematode species from the Canary Islands (Spain)

Padilla-Cubas

Hernández

Pino

2010

International Journal of Pest Management

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We evaluated the efficacy, against neonate larvae of the banana weevil, Cosmopolites sordidus (Germar) (Coleoptera, Curculionidae), of two indigenous entomopathogenic nematode species of the families Steinernematidae and Heterorhabditidae. The nematodes, isolated in the Canary Islands (Spain), were Heterorhabditis bacteriophora (TF19) and an undescribed species (TF135) of the Steinernema feltiae-group. Exposure of C. sordidus neonate larvae to 5 concentrations (2.5, 5, 25, 50 and 100 infective juveniles/cm 2 ) in Petri dishes with sterile sand resulted in 100% mortality, with each of the two nematode species at all concentrations tested. The lowest median lethal time (LT 50 ) for Steinernema sp. was 2.6 d at a dose of 25 infective juveniles/cm 2 and 3.6 d for H. bacteriophora at a dose of 2.5 and 5 infective juveniles/cm 2 . The penetration rate was also evaluated as an indicator of entomopathogenic nematode infectivity. The highest values for penetration rate were recorded at lowest concentrations of infection in Steinernema sp. and in H. bacteriophora, but rates differed regardless of the LT 50 . Our results suggest that these two nematode species may improve the biological control of neonate larvae of C. sordidus in banana crops.

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“…Although chemicals have been used in commercial plantations, C. sordidus has become resistant to pesticides quite rapidly, and factors such as environmental pollution and high costs further limit their use (Collins et al, 1991;Gold et al, 1999b). Parasitism and predation of banana weevil eggs, larvae, and adult have been recorded, but the population of parasitoids and predators were very small and of no major importance to the population levels of C. sordidus (Koppenhofer et al, 1993;Treverrow et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

Effect of endophytic Beauveria bassiana on populations of the banana weevil, Cosmopolites sordidus, and their damage in tissue‐cultured banana plants

Akello

Dubois²,

Coyne³

et al. 2008

Entomologia Exp Applicata

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The entomopathogen Beauveria bassiana (Balsamo) Vuillemin (Ascomycota: Hypocreales) survives as an endophyte in a wide range of plants, offering substantial protection against tunneling insect pests. Although current research indicates that the fungus can live as an endophyte in tissue-cultured banana plants, there is no information on the efficacy of endophytic B. bassiana against the banana weevil, Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae). Our study aimed at determining the effects of endophytic B. bassiana on oviposition rate and populations of the banana weevil, and their plant damage. Screenhouse studies were undertaken in which 8-week-old B. bassiana -inoculated tissue-cultured banana plants [cultivar Kibuzi, Musa spec. (Musaceae), genome group AAA-EA] were infested with female banana weevils. Five days after plant infestation with the banana weevil, there was no effect of B. bassiana on oviposition rate and egg hatchability. However, after 15 weeks, the presence of B. bassiana as an endophyte in banana tissues greatly reduced banana weevil populations and their damage to plants. Between 53.4 and 57.7% of the banana weevil adults died because of B. bassiana infection, resulting in a reduction of plant damage by 29.1-62.7% depending on plant part. Beauveria bassiana was re-isolated from different plant parts, but to a greater extent from the roots and rhizomes than from pseudostem bases. Artificial inoculation of B. bassiana in banana plants caused no negative impact on banana growth. Our study demonstrated for the first time that endophytic B. bassiana reduced populations of C. sordidus and the plant damage they cause, and can thus be an alternative method for effective delivery of this fungus to banana plants for the management of C. sordidus .

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Evaluation of entomopathogenic nematodes for control of Cosmopolites sordidus Germar (Coleoptera: Curcilionidae), a pest of bananas in Australia

Cited by 26 publications

References 9 publications

First report of entomopathogenic nematodes from Tanzania and their virulence against larvae and adults of the banana weevil Cosmopolites sordidus (Coleoptera: Curculionidae)

First report of entomopathogenic nematodes from Tanzania and their virulence against larvae and adults of the banana weevil Cosmopolites sordidus (Coleoptera: Curculionidae)

Laboratory efficacy against neonate larvae of the banana weevilCosmopolites sordidusof two indigenous entomopathogenic nematode species from the Canary Islands (Spain)

Effect of endophytic Beauveria bassiana on populations of the banana weevil, Cosmopolites sordidus, and their damage in tissue‐cultured banana plants

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