Distribusi Spesies Lalat Buah di Sumatera Barat dan Riau

. Penelitian ini bertujuan mengetahui distribusi dan diversitas spesies lalat buah di Sumatera Barat dan Pulau Kundur Kabupaten Karimun, Riau. Penelitian dilakukan dengan metode survei mulai bulan Juni 2003 – Desember 2004. Lalat buah ditangkap menggunakan perangkap yang terbuat dari botol bekas air mineral yang di dalamnya digantungkan kapas yang telah dibasahi dengan metil eugenol dan cue lure. Lalat buah hasil tangkapan dibawa ke Laboratorium Proteksi Balai Penelitian Tanaman Buah Tropika Solok untuk diidentifikasi menggunakan kunci identifikasi elektronik Cabikey. Hasil penelitian menunjukkan bahwa dari semua lokasi penelitian diperoleh 45 spesies lalat buah (2 spesies belum teridentifikasi). Tiga spesies lalat buah ditemukan di semua lokasi penelitian, yaitu B. albistrigata, B. carambolae, dan B. papayae. Keragaman spesies lalat buah paling tinggi ditemukan di Kabupaten Solok, Sumatera Barat dan Pulau Kundur, berturut-turut ditemukan 30 spesies dan 25 spesies lalat buah. Hasil penelitian ini bermanfaat sebagai informasi terutama bagi karantina sebagai dasar untuk memperketat aturan mengenai keluar masuknya buah-buahan dari dan ke suatu daerah sehingga spesies-spesies yang ada di daerah tertentu terutama daerah yang mempunyai diversitas spesies tinggi tidak masuk ke daerah lain

Efektivitas Model dan Ketinggian Perangkap dalam Menangkap Hama Lalat Buah Jantan, Bactrocera spp

ABSTRAK. Penelitian ini bertujuan mengetahui model dan ketinggian perangkap yang efektif dalam menangkap lalat buah, Bactrocera spp. Penelitian ini dilakukan di kebun petani di Kenagarian Kacang pada pertanaman polikultur dan Alahan Panjang pada pertanaman monokultur, Solok mulai Maret 2003-Desember 2004. Model alat perangkap yang digunakan dalam penelitian ini yaitu perangkap bekas botol air mineral, modifikasi gipsy moth, modifikasi perangkap steiner, perangkap delta, dan perangkap McPhail. Masing-masing perangkap diberi umpan dengan 0,5 ml metil eugenol atau cue lure yang diteteskan pada sepotong kapas dan digantungkan di dalam perangkap. Untuk mengetahui ketinggian perangkap yang efektif untuk menangkap lalat buah, penelitian dilakukan dengan memasang perangkap dari botol air mineral pada ketinggian 0,5, 1, 1,5, 2, dan 2,5 m dari permukaan tanah. Hasil penelitian menunjukkan bahwa jumlah lalat buah yang tertangkap per perangkap/hari pada masing-masing jenis perangkap yang digunakan berbeda nyata. Lalat buah yang paling banyak tertangkap per perangkap/hari adalah pada perangkap McPhail yaitu 52 ekor dan yang paling sedikit diperoleh pada perangkap gipsy moth yaitu 6 ekor/perangkap/hari. Ketinggian perangkap terlihat berbeda nyata, di mana lalat buah yang paling banyak tertangkap adalah pada perangkap dengan ketinggian 1,5 m dari permukaan tanah. Penggabungan antara model perangkap dengan atraktan sintetis, seperti metil eugenol atau cue lure meningkatkan kemampuan tidak hanya sebagai perangkap lalat buah yang potentsial tetapi juga sebagai alat monitoring hama lalat buah.ABSTRACT. Hasyim, A., Muryati, and W. J. de Kogel. 2006. Trap type and trap height effectiveness on catching male fruit flies, Bactrocera spp. The objective of the research was to understand trap types and trap position that most effective on catching male fruit flies, Bactrocera spp. The research was conducted at Kenagarian Kacang of polyculture plantation and Alahan Panjang of monoculture plantation, Solok from March 2003 to December 2004. The types of trap used in this experiment were the trap made from used bottle of mineral water, the modified of gipsy moth trap, the steiner trap, delta trap, and McPhail trap. One piece of cotton, soaked in 0.5 ml methyl eugenol were hung in each trap. To determine the trap height effectiveness, the trap made from used bottle of mineral water were set at several height of 0.5, 1, 1.5, 2, and 2.5 m above the ground level, respectively. The results showed that the number of flies cought/trap/day was significantly different in respect to trap types. The highest number of flies cought/day/trap was found in McPhail trap (52 flies), and the lowest number of flies cought/day/trap was found in modified gypsy moth traps (6 flies), the trap positions was significantly affect the number of fruit flies cought and the higest number of flies cought/trap/day was obtained by 1.5 m trapped height. The combination types of trap and syntetic attractant such as methyl eugenol or cue lure could increase the capacity, not only as a potential trapped but also as a monitoring tool for fruit flies

Biology and criminology

More than six years after the themed issue 'Biologic factors of aggressive behaviour' (in 2000), another special issue on the relationship between biology and criminology has been published, inspired mainly by the many studies that have since been carried out into biological factors of psychopathy, aggression, antisocial behaviour and addiction. New techniques have enabled general knowledge on brain structure and function to develop quickly. Knowledge in the field of genetics and gene environment interactions (epigenetica) is also exhibiting continued growth. Index SummariesInternetsitesARTIKELEN: W. Buikhuisen - Criminologie, biologie en de centrale betekenis van de amygdala A. Popma, L.M.C. Jansen, R. Vermeiren en Th.A.H. Doreleijers - Antisiociaal en agressief gedrag; recente vorderingen binnen neurobiologisch onderzoek D.J.L.G. Schutter en J. van Honk - De biologie van de psychopaat W. van den Brink - Verslaving: een chronisch recidiverende hersenziekte A. Zaalberg - Eerst soep, dan het Evangelie; over de relatie tussen voeding en gedrag K. de Kogel - Oxytocine en de neurochemie van vertrouwen en verwaarlozing M. Schermer - Voorspellende en preventieve criminologie; parallellen met de geneeskunde Internetsites SAMENVATTING: Ruim zes jaar na het themanummer 'Biologische factoren van agressief gedrag' (2000) is er nu opnieuw een speciale aflevering over de verhouding tussen biologie en criminologie. Een belangrijke aanleiding zijn de vele onderzoeken naar biologische factoren van psychopathie, agressie, antisociaal gedrag en verslaving die sindsdien hebben plaatsgevonden. Dankzij nieuwe technieken ontwikkelt de algemene kennis over de structuur en functies van de hersenen zich in snel tempo. Ook de kennis over genetica en gen-omgevingsinteracties (epigenetica) neemt verder toe

Colonisation of Clostridium in the body is restricted to hypoxic and necrotic areas of tumours

The use of gene therapy is one of the most recent molecular strategies for the treatment of cancer. It is essential, however, to have an efficient transfer system by which the desired gene can be delivered to the correct environment. The experiments described in this report investigate apathogenic Clostridium as a possible vector to transfer a specific gene product into the extracellular microenvironment of the tumour which is hypoxic/necrotic in parts, using WAG/Rij rats with transplantable rhabdomyosarcomas as a model. Our data show that Clostridium, after systemic administration of at least 10(7) spores, specifically colonises the hypoxic/necrotic areas of our tumour model, the most efficient species being C. acetobutylicum (NI-4082) and C. oncolyticum. Although spores were also detected in normal tissues for up to 4 weeks, they did not germinate in these tissues. We conclude that it seems likely that these bacteria can be used as a selective transfer system into the extracellular environment of tumours which have hypoxic regions. This strategy would be more tumour-specific than various other strategies that are currently being investigated in anti-cancer gene therapy. (C) 1998 Academic Press.</p

Vascular architecture and hypoxic profiles in human head and neck squamous cell carcinomas

Tumour oxygenation and vasculature are determinants for radiation treatment outcome and prognosis in patients with squamous cell carcinomas of the head and neck. In this study we visualized and quantified these factors which may provide a predictive tool for new treatments. Twenty-one patients with stage III–IV squamous cell carcinomas of the head and neck were intravenously injected with pimonidazole, a bioreductive hypoxic marker. Tumour biopsies were taken 2 h later. Frozen tissue sections were stained for vessels and hypoxia by fluorescent immunohistochemistry. Twenty-two sections of biopsies of different head and neck sites were scanned and analysed with a computerized image analysis system. The hypoxic fractions varied from 0.02 to 0.29 and were independent from T- and N-classification, localization and differentiation grade. No significant correlation between hypoxic fraction and vascular density was observed. As a first attempt to categorize tumours based on their hypoxic profile, three different hypoxia patterns are described. The first category comprised tumours with large hypoxic, but viable, areas at distances even greater than 200 μm from the vessels. The second category showed a typical band-like distribution of hypoxia at an intermediate distance (50–200 μm) from the vessels with necrosis at greater distances. The third category demonstrated hypoxia already within 50 μm from the vessels, suggestive for acute hypoxia. This method of multiparameter analysis proved to be clinically feasible. The information on architectural patterns and the differences that exist between tumours can improve our understanding of the tumour micro-environment and may in the future be of assistance with the selection of (oxygenation modifying) treatment strategies. © 2000 Cancer Research Campaig

The Impact of COVID-19 on Crime: a Systematic Review

COVID-19 caused a great burden on the healthcare system and led to lockdown measures across the globe. These measures are likely to influence crime rates, but a comprehensive overview on the impact of COVID-19 on crime rates is lacking. The aim of the current study was to systematically review evidence on the impact of COVID-19 measures on crime rates across the globe. We conducted a systematic search in several databases to identify eligible studies up until 6–12-2021. A total of 46 studies were identified, reporting on 99 crime rates about robberies (n = 12), property crime (n = 15), drug crime (n = 5), fraud (n = 5), physical violence (n = 15), sexual violence (n = 11), homicides (n = 12), cybercrime (n = 3), domestic violence (n = 3), intimate partner violence (n = 14), and other crimes (n = 4). Overall, studies showed that most types of crime temporarily declined during COVID-19 measures. Homicides and cybercrime were an exception to this rule and did not show significant changes following COVID-19 restrictions. Studies on domestic violence often found increased crime rates, and this was particularly true for studies based on call data rather than crime records. Studies on intimate partner violence reported mixed results. We found an immediate impact of COVID-19 restrictions on almost all crime rates except for homicides, cybercrimes and intimate partner violence

Living with the Past: Nutritional Stress in Juvenile Males Has Immediate Effects on their Plumage Ornaments and on Adult Attractiveness in Zebra Finches

The environmental conditions individuals experience during early development are well known to have fundamental effects on a variety of fitness-relevant traits. Although it is evident that the earliest developmental stages have large effects on fitness, other developmental stages, such as the period when secondary sexual characters develop, might also exert a profound effect on fitness components. Here we show experimentally in male zebra finches, Taeniopygia guttata, that nutritional conditions during this later period have immediate effects on male plumage ornaments and on their attractiveness as adults. Males that had received high quality food during the second month of life, a period when secondary sexual characteristics develop, were significantly more attractive as adults in mate choice tests than siblings supplied with standard food during this period. Preferred males that had experienced better nutritional conditions had larger orange cheek patches when nutritional treatments ended than did unpreferred males. Sexual plumage ornaments of young males thus are honest indicators of nutritional conditions during this period. The mate choice tests with adult birds indicate that nutritional conditions during the period of song learning, brain and gonad development, and moult into adult plumage have persisting effects on male attractiveness. This suggests that the developmental period following nutritional dependence from the parents is just as important in affecting adult attractiveness as are much earlier developmental periods. These findings thus contribute to understanding the origin and consequences of environmentally determined fitness components