Jesse Bamba
University of Guam, College of Natural and Applied Sciences, Faculty Member
The eggplant mealybug, Coccidohystrix insolita (Green) (Hemiptera: Pseudococcidae), is recorded from the island of Guam in the Mariana Islands for the first time. Factors indicating that this introduced mealybug has the potential to... more
The eggplant mealybug, Coccidohystrix insolita (Green) (Hemiptera: Pseudococcidae), is recorded from the island of Guam in the Mariana Islands for the first time. Factors indicating that this introduced mealybug has the potential to become a pest of economic importance for agriculture and horticulture on Guam are discussed.
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Genome sequences of a novel begomovirus infecting tomato on Guam were obtained using primer-walking and sequencing. The complete genome sequences are 2,750 nucleotides long with a typical monopartite organization and display less than 91%... more
Genome sequences of a novel begomovirus infecting tomato on Guam were obtained using primer-walking and sequencing. The complete genome sequences are 2,750 nucleotides long with a typical monopartite organization and display less than 91% nucleotide sequence identity to other begomoviruses. A provisional name, tomato leaf curl Guam virus (ToLCGuV), is proposed.
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Clockwise from left: southern African chromolaena biotype in flower; Pareuchaetes pseudoinsulata (left), P. insulata (right); Cecidochares connexa female; Actinote thalia thalia (all ARC-PPRI) Fi f th Internat ional Workshop on Biologica... more
Clockwise from left: southern African chromolaena biotype in flower; Pareuchaetes pseudoinsulata (left), P. insulata (right); Cecidochares connexa female; Actinote thalia thalia (all ARC-PPRI) Fi f th Internat ional Workshop on Biologica l Control and Management of Chromolaena odorata
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The major pests of cabbage, Brassica oleracea var. capitata on Guam are diamondback moth, Plutella xylostella; cabbage webworm, Hellula undalis; cutworm, Spodoptera litura; cabbage cluster caterpillar, Crocidolomia pavonana; the... more
The major pests of cabbage, Brassica oleracea var. capitata on Guam are diamondback moth, Plutella xylostella; cabbage webworm, Hellula undalis; cutworm, Spodoptera litura; cabbage cluster caterpillar, Crocidolomia pavonana; the fleahopper, Halticus tibialis and aphids. In the past, Chinese cabbage, Brassica chinensis cv. Tempest for C. pavonana; radish, Raphanus sativus cv. Minowase Summer Cross 3 and mustard, Brassica juncea cv. Indian for H. undalis; B. chinensis cv. Tempest, and R. sativus cv. Minowase Summer Cross 3 for H. tibialis; and B. juncea cv. Indian for aphids were found to be effective as trap crops in cabbage fields. Indian mustard has proven to be an effective trap crop for diamondback moth in India and South Africa, however, it was not attractive for the population in the Pacific. Collards, Brassica oleracea acephala cv. Vates, have been noted as an effective trap crop for P. xylostella in cabbage fields in Guam. The population of diamondback moth in the continental...
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ABSTRACT The papaya mealybug (PM), Paracoccus marginatus, a pest in the Central America and the Caribbean was noted to have established on Guam in April 2002 and was causing serious damage to papaya, Plumeria spp., Hibiscus spp. And other... more
ABSTRACT The papaya mealybug (PM), Paracoccus marginatus, a pest in the Central America and the Caribbean was noted to have established on Guam in April 2002 and was causing serious damage to papaya, Plumeria spp., Hibiscus spp. And other plants. The parasitoids Anagyrus loecki, Pseudleptomastix mexicana and Acerophagous papayae totalling 46 200 individuals were introduced from Puerto Rico and field released in Guam from June to October, 2002. A reduction of over 99% of papaya mealybug was observed bout a year after the introduction of these parasitoids. This has reduced risk of introduction of this mealybug to neighbouring islands in the Pacifi c Region. A biological control system now appears successful and is available for implementation if necessary in other islands in the Pacific region.
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Chromolaena odorata, a neotropical plant, has spread throughout humid tropical Asia, Africa, the Western Pacific and a small area in northern Australia. A Commonwealth Institute of Biological Control project in 1966 identified over 200... more
Chromolaena odorata, a neotropical plant, has spread throughout humid tropical Asia, Africa, the Western Pacific and a small area in northern Australia. A Commonwealth Institute of Biological Control project in 1966 identified over 200 arthropod natural ene- mies of this weed. Pareuchaetes pseudoinsulata was one of the first natural enemies iden- tified in this project. It was introduced to Ghana,
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ABSTRACT The red coconut scale (Furcaspis oceanica Lindinger), an introduced pest of the coconut palm (Cocos nucifera L.), had been present in Guam since the early 1970s. It was confi ned to the central region until 1987 and had spread... more
ABSTRACT The red coconut scale (Furcaspis oceanica Lindinger), an introduced pest of the coconut palm (Cocos nucifera L.), had been present in Guam since the early 1970s. It was confi ned to the central region until 1987 and had spread throughout most of the island by 1996. A parasitoid, Adelencyrtus oceanicus (Doutt), introduced to control it in 1988/89, had also spread throughout most of Guam by 1996. A survey in January/February 2002 of 26 localities showed that the scale was present at very low levels and the parasitoid at high levels compared to a previous survey in 1996. This parasitoid is density independent and it is an effective biological control agent of the red coconut scale.
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The invasive plant ivy gourd Coccinia grandis (L.) Voigt (Cucurbitaceae) first appeared on Guam in the 1980s and subsequently spread to about 200 ha in the absence of natural enemies. Following its successful introduction as a biological... more
The invasive plant ivy gourd Coccinia grandis (L.) Voigt (Cucurbitaceae) first appeared on Guam in the 1980s and subsequently spread to about 200 ha in the absence of natural enemies. Following its successful introduction as a biological control agent in Hawaii, the weevil Acythopeus cocciniae O'Brien and Pakaluk (Coleoptera: Curculionidae) was brought to Guam under quarantine for host specificity testing
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. The fruit piercing moth, Eudocima fullonia (Clerck) (Lepidoptera: Noctuidae), whose larval host plants are vines of the family Menispermaceae in Asia, Africa and Australia, is thought to have adapted to Erythrina spp. in the Pacific... more
. The fruit piercing moth, Eudocima fullonia (Clerck) (Lepidoptera: Noctuidae), whose larval host plants are vines of the family Menispermaceae in Asia, Africa and Australia, is thought to have adapted to Erythrina spp. in the Pacific and Papua New Guinea and has been designated as a separate biotype from the Australasian and African biotype. To test the hypothesis that the Pacific population of E. fullonia is a biotype, feeding trials with the host plants Tinospora homosepala Diels (Menispermaceae) and Erythrina variegata Linn. (Fabaceae) were conducted in Guam. The results indicate that the Guam population of E. fullonia is a biotype that has expanded its host range from its normal Menispermaceae plants to Erythrina species, possibly due to genetic changes and/or the presence of closely related alkaloids in both the species and paucity of menisperms.
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... 1997. Biological control of the weed, Mimosa invisa Von Martius, on Pohnpei and Yap. Micronesica 30: 421427. ... Biotropica 6: 158164. Meyer, JY 2000. Preliminary review of the invasive plants in the Pacific islands (SPREP Member... more
... 1997. Biological control of the weed, Mimosa invisa Von Martius, on Pohnpei and Yap. Micronesica 30: 421427. ... Biotropica 6: 158164. Meyer, JY 2000. Preliminary review of the invasive plants in the Pacific islands (SPREP Member Countries). ...
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The New Guinea sugarcane weevil, Rhabdoscelus obscurus) (Boisduval) (Coleoptera: Curculionidae), is a pest of palm plantations, ornamental nurseries, and sugarcane (Saccharum L.). Field and laboratory studies have explored the effects of... more
The New Guinea sugarcane weevil, Rhabdoscelus obscurus) (Boisduval) (Coleoptera: Curculionidae), is a pest of palm plantations, ornamental nurseries, and sugarcane (Saccharum L.). Field and laboratory studies have explored the effects of trap characteristics such as design, size, color, visual and olfactory cues, and location on capture of R. obscurus in date palm plantations and ornamental nurseries at five locations (Dededo, Mangilao, Malojloj, Inarajan, and Yigo) on Guam, USA. Ramp and ground traps captured similarly, and both captured significantly more adults than bucket and pitfall traps. For economy and ease of handling, the ground trap was used for all further experiments. Larger ground traps (≥40 by 25 cm) were more efficient than smaller traps (30 by 15 cm) in capturing adults in the field. Of the eight trap colors tested in the field, brown proved most effective, followed by, in order, yellow, red, gray, blue, black, white, and green; russet was more effective than other ...