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541.
In this study, we found that Haplorchis taichui, a heterophyid intestinal fluke, is highly prevalent, with heavy worm loads, among riparian people in Saravane and Champasak province, Lao PDR. Fecal specimens were collected from 1,460 people (717 men and 743 women) in 12 riparian (Mekong river) districts and were examined by the Kato-Katz fecal smear technique. The overall helminth egg positive rate was 78.8% and 66.4% in Saravane and Champasak province, respectively. The positive rate for small trematode eggs (STE), which included H. taichui and other heterophyids, Opisthorchis viverrini, and lecithodendriids, was 69.9% and 46.3% in Saravane and Champasak province, respectively. To obtain adult flukes, 30 STE-positive people were treated with 40 mg/kg praziquantel and then purged. Whole diarrheic stools were collected 4-5 times for each person and searched for fluke specimens using a stereomicroscope. Mixed infections with various species of trematodes (H. taichui, Haplorchis pumilio, O. viverrini, Prosthodendrium molenkampi, Centrocestus formosanus, and Echinochasmus japonicus) and a species of cestode (Taenia saginata) were found. However, the worm load was exceptionally high for H. taichui compared with other trematode species, with an average of 21,565 and 12,079 specimens per infected person in Saravane and Champasak province, respectively, followed by H. pumilio (41.9 and 22.5, respectively) and O. viverrini (9.4 and 1.5, respectively). These results show that diverse species of intestinal and liver flukes are prevalent among riparian people in Saravane and Champasak province, Lao PDR, with H. taichui being the exceptionally dominant species.  相似文献   
542.
The oil rose, Rosa damascena Mill. (Rosaceae) is an agricultural crop cultivated in various countries of the northern hemisphere, such as Turkey, Bulgaria, Morocco, Iran, Egypt, France, China and India. Iran, presently, is the largest producer of rose water in world. The major production areas in Iran are Kashan, Fars, Kerman and Azerbaijan. Kerman province with 2297 hectares ha of rose gardens and 6198 tons of flower production is one of the important rose production regions. The productions of this region are organic and do not use anychemical compounds such as pesticides and fertilisers. The major fungal pathogens were studied during 2008–2010 in oil rose production areas in Kerman province, Iran. Verticillium dahlias, Rosellinia necatrix, Alternaria alternata, Seimatosporium fusisporum and Podosphaera pannosa have been detected in the oil rose from different regions in Kerman province. A. alternata has the most isolates and infected plants per cent in the oil rose. This is the first report fromVerticillium dahliae, R. necatrix, A. alternata, S. fusisporum on oil roses (R.damascena) in the world.  相似文献   
543.
Vietnam is one among five ranked countries with high-risk injury due to the phenomenon of climate change. Geographically, Binh Thuan, a coastal province, is located in the Southern Centre area. Currently, natural disasters have become more frequent, particularly drought. Desertification has become more serious. Besides the natural causes as described above, there are several affected by human activities such as high population and poverty, inappropriate cultivating technique, deforestation, ill-adopted legal framework, weak management capacity, lack of adequate knowledge, and a lack of awareness in local population. To assess risks of desertification for the Binh Thuan province (Vietnam), a risk assessment model based on a Leopold matrix was applied. As a result, a model of cause and effect showed six degrees of impacts of environmental and social conditions on the socioeconomic developments from very highly to very unlikely significance. Risk assessment allows for a general figure of various impacts of desertification on the socioeconomic developments in Binh Thuan, Vietnam.  相似文献   
544.
545.
"云南及周边地区生物资源调查"项目于2006-2011年,对云南省31个县、四川省8个县和西藏自治区2个县的农业生物资源进行了系统调查。系统调查的41个县的地形、地貌十分多样,气候类型很多,有"一山有四季,十里不同天"的说法。加之,这些县份都集居有少数民族,少数民族有各自的传统文化和生活习俗,从而赋予了农业生物资源丰富的民族文化内涵。正因为这里的多样性气候和各异的民族文化,造就了丰富的农业生物资源。通过调查获得了大量基础数据和信息,收集到5300多份农业生物种质资源,其中有一批稀有种质资源,这些稀有种质资源对相应农业生物的起源进化和系统分类研究,以及新品种选育都具有重要利用价值。  相似文献   
546.
通过病害症状和病原形态学特征对吉林省香菜种植区白粉病病原菌进行鉴定,结果为该病由独活白粉菌(Erysiphe heraclei DC.)引起。香菜白粉病为吉林省香菜一新病害,且芫荽属为东北地区白粉菌属级新记录寄主。  相似文献   
547.
In a survery of the bee fauna of Horand forests in East Azerbaijan province of Iran during 2008 and 2009, 46 species belonging to the families Anthophoridae, Halictidae and Megachilidae were identified. Eight species are new to the fauna of Iran: Evylaeus albipes (Fabricius, 1781), E. corvinus (Morawitz, 1878), E. israelensis (Ebmer, 1974), Seladonia desertorum (Morawitz, 1876), Heriades crenulatus Nylander, 1856, Hoplitis anthocopoides (Schenck, 1853), H. manicata (Morice, 1901) and H. rufohirta (Latreille, 1811).  相似文献   
548.
报道了湖北种子植物分布1新记录科———星叶草科Circaeasteraceae,含1新记录属———星叶草属Circaeaster,1新记录种———星叶草Circaeaster agrestis Maxim。通过查阅标本对星叶草的性状进行了描述并讨论了其形态变异幅度。本文重绘了星叶草的线条图并提供了野外原色图版。  相似文献   
549.
The family Eucharitidae (Hymenoptera: Chalcidoidea) is recorded for the first time for the fauna of Saudi Arabia based on Hydrorhoa caffra (Westwood) and Eucharis (Psilogastrellus) affinis Bouček. The record of Hydrorhoa caffra suggests that Al-Baha and Asir provinces should be considered as part of the Afrotropical rather than the Palaearctic region. The previously unknown male of Eucharis affinis Bouček is described and figured. Macrophotographs of the species are provided.  相似文献   
550.
报道中国青藏高原青海省发现的十字花科(Cruciferae)一个新归化属白芥属(Sinapis L.)。白芥Sinapis alba L.为一年生草本,国内多做引种栽培,青海尚未见报道。人为传播可能是白芥进入青海的主要原因。该植物具有一定的经济和药用价值,且在西宁野外高海拔生境下生长良好,可考虑引种栽培;同时应防止其向野外扩散,以防影响当地植被情况。  相似文献   
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