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The ichneumonid parasitoid Stenarella insidiator (Smith, 1859) is recorded for the first time from Vietnam based on the specimens collected from Tam Dao National Park in Vinh Phuc province, Na Hang district in Tuyen Quang province, and Bidoup-Nui Ba National Park in Lam Dong province. In addition, the wasp Orancistrocerus aterrimus (de Saussure, 1852) (Hymenoptera: Vespidae) is reported as a new host of this parasitoid. The parasitoid is described based on Vietnamese material with information of its overwintering in the wasp nest. [ABSTRACT FROM AUTHOR]

This paper contains descriptions and illustrations of five new species of the genus Aulacocentrum Brues, 1922, from Vietnam, viz. Aulacocentrum assitum Long & Pham, sp. nov. ; A. glabrum Long, sp. nov. ; A. imparum Long & van Achterberg, sp. nov. ; A. intermedium Long & van Achterberg, sp. nov. ; and A. simulatum Long, sp. nov. Additionally, Aulacocentrum seticella van Achterberg & He is newly recorded for Vietnam's braconid fauna. A checklist and a key to the Oriental and East Palaearctic Aulacocentrum species is provided and the in-country distribution of the Vietnamese species is given. [ABSTRACT FROM AUTHOR]

This is the most complete list of Aleiodes species of the subfamily Rogadinae from Vietnam, and of the total seventy five species of this genus reported, sixty three species of the subgenus Aleiodes, five of Arcaleiodes, three of Chelonorhogas, and four species of the genus Heterogamus. There are thirty species newly recorded from the Rogadinae fauna of Vietnam. The information on valid names, the published papers of the first record of Aleiodes species in Vietnam and the distribution of Aleiodes species were also provided. Additionally, there are three species listed with information about their hosts, being agricultural pests controlled to some degree by these parasitoids. [ABSTRACT FROM AUTHOR]

Dicamptus isshikii Uchida, 1928 is recorded for the first time from Vietnam on the basis of specimens collected from Bat Xat Nature Reserve, Lao Cai province, Northwest Vietnam. A checklist of the Dicamptus species of Vietnam is presented with detailed records on the distribution range of each species. A key to the Vietnamese species of the genus Dicamptus is also provided. [ABSTRACT FROM AUTHOR]

The genus Leptophion is recorded for the first time from Vietnam, including new records of three species, viz. L. giganteus Shimizu & Watanabe, L. maculipennis (Cameron) and L. radiatus (Uchida), for the country. The comparative morphological and pictorial characters of Vietnamese specimens were given. In addition, variations and in-country distribution of newly recorded species were also provided. [ABSTRACT FROM AUTHOR]

Two species of the genus Acropimpla, viz. A. bicarinata (Cameron) and A. uchidai (Cushman), are recorded for the first time from Vietnam. An updated, illustrated key to all eight Vietnamese species of Acropimpla is provided. [ABSTRACT FROM AUTHOR]

Based on the material collected from the field surveys in 2017-2018, we report the first list of lepidopteran insects from the Trang An Landscape Complex, Ninh Binh Province. A total of 167 species including 62 butterflies and 105 moths have been recorded, of those two species, Celerena signata Warren, 1898 and Nygmia plana (Walker, 1856) are recorded for the first time from Vietnam. [ABSTRACT FROM AUTHOR]

Six new species of three small genera of the subfamily Rogadinae: Cystomastacoides van Achter- berg, 1997; Gyroneuron Kokujev, 1901 and Rogasodes Chen & He, 1997, viz. Cystomastacoides contrastus Long, sp. n.; Cystomastacoides similis Long, sp. n.; Gyroneuron asperatum Long, sp. n.; Gyroneuron bicoloratum Long, sp. n.; Gyroneuron glabrum Long, sp. n.; and Rogasodes phongi Long & Hoa, sp. n.; and three new species of the subgenus Arcaleiodes Chen & He, 1997 from Vietnam, namely: Aleiodes (Arcaleiodes) hoanglienensis Long, sp. n., Aleiodes (Arcaleiodes) sapa Long, sp. n. and Aleiodes (Arcaleiodes) simulatus Long, sp. n. are described and illustrated. Additionally, two genera: Cystomastacoides van Achterberg and Rogasodes Chen & He, and two species: Aleiodes (Arcaleiodes) sinamensis Quicke & Butcher and Cystomastacoides coxalis Chen & He are newly recorded for Vietnam's braconid fauna. Keys to species of the genera Cystomastacoides, Gyroneuron and subgenus Arcaleiodes from Vietnam are given. The checklist and distribution of the already known species of the genera are also provided. [ABSTRACT FROM AUTHOR]

Nghiên cứu phân tích quyết định tham gia hợp đồng liên kết trong sản xuất lúa của nông hộ trên địa bàn Tỉnh An Giang. Phương pháp thống kê mô tả, kiểm định trị trung bình T-test và hồi quy binary logistic được sử dụng với số liệu phỏng vấn 211 nông hộ tham gia và không tham gia hợp đồng trên địa bàn hai Huyện Thoại Sơn và Châu Thành, An Giang vào tháng 10 năm 2019. Kết quả so sánh trị trung bình cho thấy có sự khác biệt giữa hai nhóm tham gia và không tham gia hợp đồng ở những đặc tính như diện tích canh tác lúa, tỷ lệ thu nhập từ lúa trên tổng thu nhập, mức độ tham gia khuyến nông, hợp tác xã tại mức ý nghĩa thống kê 1% và 5%. Kết xuất hồi quy cũng phản ánh diện tích canh tác, tham gia hợp tác xã, khuyến nông và niềm tin với đối tác thu mua có ảnh hưởng tích cực đến quyết định tham gia hợp đồng liên kết. Tuy nhiên, cơ chế thanh toán chậm, trì hoãn của doanh nghiệp cản trợ động lực tham gia vào hợp đồng của nông hộ. Những phát hiện của nghiên cứu cung cấp sự hiểu biết hữu ích cho các nhà sản xuất, nhà hoạch định chính sách nhằm thúc đẩy tính toàn diện của hợp đồng liên kết trong chuỗi sản xuất và tiêu thụ lúa gạo.

BackgroundTo date, little is known about the initial spread and response to the 2009 pandemic of novel influenza A ("2009 H1N1") in tropical countries. Here, we analyse the early progression of the epidemic from 26 May 2009 until the establishment of community transmission in the second half of July 2009 in Ho Chi Minh City (HCMC), Vietnam. In addition, we present detailed systematic viral clearance data on 292 isolated and treated patients and the first three cases of selection of resistant virus during treatment in Vietnam.Methods and findingsData sources included all available health reports from the Ministry of Health and relevant health authorities as well as clinical and laboratory data from the first confirmed cases isolated at the Hospital for Tropical Diseases in HCMC. Extensive reverse transcription (RT)-PCR diagnostics on serial samples, viral culture, neuraminidase-inhibition testing, and sequencing were performed on a subset of 2009 H1N1 confirmed cases. Virological (PCR status, shedding) and epidemiological (incidence, isolation, discharge) data were combined to reconstruct the initial outbreak and the establishment of community transmission. From 27 April to 24 July 2009, approximately 760,000 passengers who entered HCMC on international flights were screened at the airport by a body temperature scan and symptom questionnaire. Approximately 0.15% of incoming passengers were intercepted, 200 of whom tested positive for 2009 H1N1 by RT-PCR. An additional 121 out of 169 nontravelers tested positive after self-reporting or contact tracing. These 321 patients spent 79% of their PCR-positive days in isolation; 60% of PCR-positive days were spent treated and in isolation. Influenza-like illness was noted in 61% of patients and no patients experienced pneumonia or severe outcomes. Viral clearance times were similar among patient groups with differing time intervals from illness onset to treatment, with estimated median clearance times between 2.6 and 2.8 d post-treatment for illness-to-treatment intervals of 1-4 d, and 2.0 d (95% confidence interval 1.5-2.5) when treatment was started on the first day of illness.ConclusionsThe patients described here represent a cross-section of infected individuals that were identified by temperature screening and symptom questionnaires at the airport, as well as mildly symptomatic to moderately ill patients who self-reported to hospitals. Data are observational and, although they are suggestive, it is not possible to be certain whether the containment efforts delayed community transmission in Vietnam. Viral clearance data assessed by RT-PCR showed a rapid therapeutic response to oseltamivir.