Evidence of queen-rearing suppression by mature queens in the little fire ant, .

The little fire ant (LFA), , is a serious invasive pest first reported on Hawaii Island in 1999, and has since spread and established itself across the island. LFA is considered one of the worst 100 invasive species and has significant ecological, agricultural, and public health impacts in invaded areas, which include much of the tropical New World. Although localized eradication efforts have proven successful, they are intensive and difficult to implement.

An Unstable Monoterpene Alcohol as a Pheromone Component of the Longhorned Beetle Paranoplium gracile (Coleoptera: Cerambycidae).

We report the identification of p-mentha-1,3-dien-8-ol, an unstable monoterpene alcohol, as a male-produced aggregation-sex pheromone component of the cerambycid beetle Paranoplium gracile (Leconte) (subfamily Cerambycinae, tribe Oemini), a species endemic to California. Headspace volatiles from live males contained a blend of nine cyclic terpenoids that were not detected in analogous samples from females. Volatiles produced by male Eudistenia costipennis Fall, also in the tribe Oemini, contained the same suite of nine compounds.

Effects of Pheromone Dose and Conspecific Density on the Use of Aggregation-Sex Pheromones by the Longhorn Beetle Phymatodes grandis and Sympatric Species (Coleoptera: Cerambycidae).

Many species of longhorn beetles (Coleoptera: Cerambycidae) utilize male-produced aggregation-sex pheromones that attract both sexes. However, the reasons why and the details of how this type of pheromone is used by cerambycids and other coleopteran species that utilize analogous male-produced pheromones remain unclear. Thus, our goals were to test the hypotheses that 1) cerambycids respond to pheromones in a dose-dependent (= release rate-dependent) manner and 2) pheromone emission is density-dependent.

Fuscumol and Geranylacetone as Pheromone Components of Californian Longhorn Beetles (Coleoptera: Cerambycidae) in the Subfamily Spondylidinae.

In field trials testing attraction of cerambycid beetles to a blend of known pheromone components plus host plant volatiles, several species in the subfamily Spondylidinae were attracted to baited traps, suggesting that one or more components of the blend might constitute their pheromones. Here, we describe laboratory and field experiments aimed at identifying the actual pheromone components produced by these species. Analysis of headspace odors collected from male Tetropium abietis (Fall) (Coleoptera: Cerambycidae) contained (S)-fuscumol as a single component, whereas Asemum nitidum (LeConte) (Coleoptera: Cerambycidae) males produced both (S)-fuscumol and geranylacetone, and Asemum caseyi (Linsley) (Coleoptera: Cerambycidae) produced only geranylacetone.

Henri Collomb and the emergence of a psychiatry open to otherness through interdisciplinary dialogue in post-independence Dakar.

During decolonization, Henri Collomb was appointed to the first Chair of Psychiatry at the University of Dakar. Using a neuropsychiatric approach, he quickly made significant advances in the field, despite the colonial era's poor legacy of assistance facilities for mentally ill people. Through alliances with professors and researchers from the university Departments of Psychology and Sociology, an original interdisciplinary dialogue was set up to build up a research team which would develop rich and varied activities in the fields of transcultural psychiatry, medical anthropology and psychoanalytic anthropology.

Terminalia Larval Host Fruit Reduces the Response of Bactrocera dorsalis (Diptera: Tephritidae) Adults to the Male Lure Methyl Eugenol.

Methyl eugenol (ME) is a powerful semiochemical attractant to males of the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), and is the keystone of detection, control, and eradication programs against this polyphagous and highly invasive tephritid pest. Despite its status as a model lure against B. dorsalis, variation among individuals in their attraction is known, independent of the generally increasing attraction with age and decreases with previous exposure.

Identification of Sex Pheromones and Sex Pheromone Mimics for Two North American Click Beetle Species (Coleoptera: Elateridae) in the Genus Cardiophorus Esch.

To date, all known or suspected pheromones of click beetles (Coleoptera: Elateridae) have been identified solely from species native to Europe and Asia; reports of identifications from North American species dating from the 1970s have since proven to be incorrect. While conducting bioassays of pheromones of a longhorned beetle (Coleoptera: Cerambycidae), we serendipitously discovered that males of Cardiophorus tenebrosus L. and Cardiophorus edwardsi Horn were specifically attracted to the cerambycid pheromone fuscumol acetate, (E)-6,10-dimethylundeca-5,9-dien-2-yl acetate, suggesting that this compound might also be a sex pheromone for the two Cardiophorus species.

Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts.

Mountain pine beetle (Dendroctonus ponderosae) has killed millions of hectares of pine forests in western North America. Beetle success is dependent upon a community of symbiotic fungi comprised of Grosmannia clavigera, Ophiostoma montium, and Leptographium longiclavatum. Factors regulating the dynamics of this community during pine infection are largely unknown.

The Influence of Host Plant Volatiles on the Attraction of Longhorn Beetles to Pheromones.

Host plant volatiles have been shown to strongly synergize the attraction of some longhorn beetle species (Coleoptera: Cerambycidae) to their pheromones. This synergism is well documented among species that infest conifers, but less so for angiosperm-infesting species. To explore the extent of this phenomenon in the Cerambycidae, we first tested the responses of a cerambycid community to a generic pheromone blend in the presence or absence of chipped material from host plants as a source of host volatiles.

[Epidemics and colonial medicine in West Africa].

We studied colonial medical practices and health policies in West Africa, which has faced endemics and epidemics that have affected entire societies. We found that attempts to centralize the organization of colonial medicine, which began in the late 19th Century, were limited until the end of World War I. Research and control programs expanded after 1920, concentrating on epidemics, but largely ignoring many major health problems, such as measles, whooping cough and malnutrition, the importance of which were not recognized until after World War II.

[Epidemics and colonial medicine in west africa].

We studied colonial medical practices and health policies in West Africa, which has faced endemics and epidemics that have affected entire societies. We found that attempts to centralize the organization of colonial medicine, which began in the late 19th Century, were limited until the end of World War I. Research and control programs expanded after 1920, concentrating on epidemics, but largely ignoring many major health problems, such as measles, whooping cough and malnutrition, the importance of which were not recognized until after World War II.

Cultural response to mental illness in Senegal: reflections through patient companions--Part II. Statistical correlates.

Patient records from the Thiaroye Psychiatric Hospital in Senegal were studied to see if analysis of patterns of persons accompanying patients to the hospital could help to portray the community's response to mental illness. A systematic sample of 935 records of initial out-patients visits were examined. Patterns of patient companionship were found to strongly correlate with specific patient sociodemographic and clinical characteristics.

Cultural response to mental illness in Senegal: Reflections through patient companions--Part I. Methods and descriptive data.

Patient records from the Thiaroye mental hospital in Senegal were analyzed to see if the patterns of persons accompanying patients to the hospital could help portray the community's response to mental illness. A systematic sample of 935 records of initial our-patient visits were examined. Patterns of patient companionship were found to strongly correlate with specific patient sociodemographic and clinical characteristics.

Diagnosis and symptoms of mental disorder in a rural area of Senegal.

A study was carried out in a rural area of Senegal to ascertain the pattern of mental disorders among patients presenting at primary health facilities. Among 545 children aged 5-15 years, attending health centres and posts, 17% were found to be suffering from some form of emotional problem, behaviour disturbance or neuro-psychiatric disorders. Using a 10-item screening questionnaire, it was shown that the symptoms "never plays with others' and "speech disturbance' were the strongest predictors of mental disorder among children.

[Semiology of bismuth encephalopathy. Comparison with seven personal cases (author's transl)].

The authors analyze 99 well-described cases of bismuth encephalopathy and suggest a clinical syndrome according to three stages of the disease (before, during and after the acute period) and three clinical domains (psychiatry, neurology and neuropsychology). A particular attention concerns the presence of sequellar clinical signs (mnesic functions), sometimes observed one year after interruption of bismuth ingestion.

[Pure bilateral agraphia, right astereognosia and arithmetic defects associated with a left parietal tumor (author's transl)].

A case of bilateral agraphia produced by a left parietal glioma is described in a 49 year-old right-handed woman. Hypothesis of a pure agraphia, etiology and non-frontal localisation of tumor are discussed. This agraphia is associated to a right astereognosia; neither functional nor behavioral relationships are found between these two defects, and it appears that their are probably associated according to the parietal locus of lesions.

[Symptomatology of dyscalculia in the presence of cortical lesions (author's transl)].

The authors examine the function of calculation in 26 patients presenting lateral local cortical lesions. They analyse the symptomatology of acalculia in relation to the location and lateral position of the lesion, and define the influence of concomitant constructive apraxia or aphasia before proposing a method for the classification of calculating disorders.

[Bilateral triple aneurysms operated in two stages: two case studies (author's transl)].

The authors discuss the approach to adopt in a case of multiple cerebral aneurysm, taking into account the patient's condition and the appearance of the aneurysmal wall. The size of the aneurysm is not an absolute criterion on which the base an assumption as to the site of the rupture and the haemorrhage. Therapy should be based on plastic coating together with clipping of the aneurysm.

[Transient agraphia due to a left parieto-occipital glioma in a right-handed patient: amnesic or "pure" agraphia? (author's transl)].

The authors investigate a case of agraphia induced by a left parieto-occipital tumor (glioma) in a right-handed 67 year-old patient. After three successive neuropsychological examinations it still proves immensely difficult to determine whether defects of spontaneous writing, dictation and copy are due to apraxia, alexia or motor disturbances. The authors discuss whether the clinical findings indicate a "pure agraphia" syndrome or "amnesic agraphia".

[Neuropsychological aspect of normal pressure hydrocephalus (author's transl)].

The authors report ten cases of normal pressure hydrocephalus treated by ventricular drainage. They pay particular attention to the neuropsychological and psychometric aspects and endeavour to identify the most characteristic nosological features by comparing their own clinical observations with those reported in the literature.

[Use of a rating scale in transcultural psychiatry].

The Psychopharmacological Studies Group of Fann, Dakar, considered the cultural expression of mental illness as it would help for a new definition of the nosographic frames, and inside of them, the appreciation of symptoms. This new definition would be applied "universally" if it may be considered that some symptoms are "culture-free" and others deeply marked by the discourse held by the person or by his social group. The use of valuation scales for symptomatic change during a treatment (here anti-depressive one) become harder by the undifferenciation of these two types of symptoms.