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Dive into the research topics where Titus Kakul is active.

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Featured researches published by Titus Kakul.


Journal of Chromatography A | 2000

Role of solid-phase microextraction in the identification of highly volatile pheromones of two Rhinoceros beetles Scapanes australis and Strategus aloeus (Coleoptera, Scarabaeidae, Dynastinae)

Didier Rochat; Pamela Ramirez-Lucas; Christian Malosse; Rosa Aldana; Titus Kakul; Jean-Paul Morin

Solid-phase microextraction (SPME) samplings from live insects or natural secretion allowed one to identify the aggregation pheromones of the pest beetles Scapanes australis and Strategus aloeus by efficient and rapid isolation of their highly volatile (72 < M(r) < 116) components. S. australis male pheromone was identified as a 84:12:4 (w/w) mixture of 2-butanol [67:33 (R)-(-):(S)-(+) ratio], 3-hydroxy-2-butanone and 2,3-butanediol [43:17:40 (R,R)-(-):(S,S)-(+):meso ratio], and S. aloeus pheromone as a 95.5:4.0:0.5 (w/w) mixture of 2-butanone, 3-pentanone and sec.-butyl acetate by GC-MS using conventional and chiral capillary columns. This is the first report of Scarabaeidae pheromones based on such small and common molecules.


Journal of Chemical Ecology | 2002

Activity of male pheromone of Melanesian rhinoceros beetle Scapanes australis

Didier Rochat; Jean-Paul Morin; Titus Kakul; Laurence Beaudoin-Ollivier; Robert N.B. Prior; Michel Renou; Isabelle Malosse; Tanya Stathers; Sebastian Embupa; Samson Laup

Laboratory and field investigations were carried out to investigate the nature and role of the male pheromone emitted by the Dynast beetle Scapanes australis and to develop a mass trapping technique against this major coconut pest in Papua New Guinea. We report the biological data obtained from natural and synthetic pheromone, previously described as an 84:12:4 (w/w) mixture of 2-butanol (1), 3-hydoxy-2-butanone (2), and 2,3-butanediol (3). EAG recordings from natural and synthetic pheromone and a pitfall olfactometer were poorly informative. In contrast, extensive field trapping trials with various synthetic pheromone mixtures and doses showed that 1 and 2 (formulated in polyethylene sachets in 90:5 v:v ratio) were necessary and sufficient for optimum long-range attraction. Beetles were captured in traps baited with racemic 1 plus 2, with or without a stereoisomer mixture of 3 (2.5- to 2500-mg/day doses). Plant pieces, either sugarcane or coconut, enhanced captures by the synthetic pheromone, which was active alone. Traps with the pheromone caught both sexes in a 3:2 female–male ratio. A pheromone-based mass trapping led to the capture of 2173 beetles in 14 traps surrounding 40 ha of a cocoa-coconut plantation. The captures followed a log-linear decrease during the 125-week trapping program. The role of the male pheromone and its potential for crop protection are discussed.


Journal of Applied Entomology | 2000

New aspects of the biology of the Melanesian rhinoceros beetle Scapanes australis (Col., Dynastidae) and evidence for field attraction to males.

Robert N.B. Prior; Jean-Paul Morin; Didier Rochat; Laurence Beaudoin-Ollivier; Tanya Stathers; Titus Kakul; Sebastian Embupa; R. Nanguai

Scapanes australis is a major coconut pest, endemic in Papua New Guinea. Early in the night, males placed singly into artificial galleries made in young coconut palms exhibited a sex specific calling behaviour for 1 to 1.5 h. Coming to the gallery entrance, they raised the abdomen and the hind legs, the head lowered inside the gallery, and emitted a liquid secretion, rhytmically smeared by crossing the legs. Females which did not behave so, were very mobile. The adult flying period coincided with the male calling behaviour. In field assays with caged insects on coconut palms, attraction of both sexes to males was evidenced when they were calling. Males fought for gallery possession at a male arrival. No aggression but mating was observed with arriving females, which proved not to have developed oocytes. The strong male attractionwas confirmed using automatic traps, baited with one lived male in a sugarcane piece. Male were assumed to release an aggregation pheromone. Further studies are underway to identify the putative pheromone.


Archive | 2001

A new type of trap for capturing #Oryctes rhinoceros# (Scarabaeidae, Dynastinae), the main pest in young oil palm and coconut plantings

Jean-Paul Morin; Sudharto Ps; Rolettha Y. Purba; Roch Desmier De Chenon; Titus Kakul; Samson Laup; Laurence Beaudoin-Ollivier; Didier Rochat


Plantations, recherche, développement | 1999

Le complexe Scapanes-Rhynchophorus, principal problème entomologique du cocotier en Papouasie-Nouvelle-Guinée

Laurence Beaudoin-Ollivier; Jean-Paul Morin; Robert N.B. Prior; Titus Kakul; Jean Ollivier; Didier Rochat; Dominique Mariau


Archive | 1999

Trapping and disruption of the mating activity of #Scapanes australis# using live male as bait in Papua New Guinea

Titus Kakul; Samson Laup; Tanya Stathers; Laurence Beaudoin-Ollivier; Jean-Paul Morin; Didier Rochat


Science in New Guinea | 2001

The larval development sites of the Melanesian coconut beetle Scapanes australis Boisduval (Coleoptera: Scarabaeidae: Dynastinae) in Papua New Guinea

Laurence Beaudoin-Ollivier; Robert N.B. Prior; Jean-Paul Morin; R. Nanguai; Titus Kakul


Archive | 2000

Données récentes sur l'écologie chimique des dynastes (Coleoptera, Scarabaeidae)

Didier Rochat; Jean-Paul Morin; Olga Pamela Ramirez-Lucas; Christian Malosse; Rosa Aldana; Jorge Aldana; Titus Kakul; Laurence Beaudoin-Ollivier; Roch Desmier De Chenon; Kazem Mohammadpoor; Arman Avand-Faghih


Archive | 2000

Control of #Scapanes australis# a major pest of coconut using semiochemicals

Titus Kakul; Samson Laup; Laurence Ollivier; Jean-Paul Morin; Didier Rochat


Archive | 2004

Models of traps for the coconut pests #Rhyncophorus bilineatus# and #Scapanes australis# and their trapping efficiency in Papua New Guinea

Titus Kakul; Samson Laup; Robert N.B. Prior; Didier Rochat; Jean-Paul Morin; Sebastian Embupa; Laurence Ollivier

Collaboration


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Jean-Paul Morin

Institut national de la recherche agronomique

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Laurence Beaudoin-Ollivier

Community College of Rhode Island

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Didier Rochat

Institut national de la recherche agronomique

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Robert N.B. Prior

Community College of Rhode Island

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Samson Laup

Community College of Rhode Island

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Sebastian Embupa

Community College of Rhode Island

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Christian Malosse

Institut national de la recherche agronomique

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Isabelle Malosse

Institut national de la recherche agronomique

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Michel Renou

Institut national de la recherche agronomique

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