共查询到19条相似文献,搜索用时 78 毫秒
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1985-1994年的3-11月,在山西省代县对小PiTi的繁殖生物学进行了研究。该鸟在山西省为夏候鸟,每年最虫3月6日迁来,最晚11月24日迁离,居留期为255天左右。种群密度在繁殖前的4月为1.37,繁殖后的9月为1.95(只/ha)。产卵始期为5月27日,日产1枚,窝卵数5-8枚,产出第二枚卵时开始孵卵。观察到最早孵卵期为5月28日,孵卵期为20-22d。雏鸟出壳先后顺序与产卵先后顺序相一致 相似文献
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中国植绥螨资源及其生物学研究进展 总被引:5,自引:0,他引:5
植绥螨是许多害螨和小型有害昆虫的重要捕食性天敌 ,在农业生产中极具利用价值。我国植绥螨资源相当丰富 ,大量的资源调查工作是在 2 0世纪 70年代末开始的。到目前为止 ,我国已经从不同地区作物上鉴定出植绥螨 2 60余种 ,其中有利用价值的约 2 0种左右。在 2 5~ 3 0℃的适宜温度下 ,植绥螨从卵到羽化为成螨约需 6~ 7d ,而寿命能长达 3 0~ 5 0d。它们对大多数的害螨的功能反应基本成HollingⅡ型。多数成螨为喜湿类型 ,较高的湿度对于孵化和存活尤为重要。在夏季高温和冬季低温来临时进行越夏和越冬 ,以度过不良的环境。植绥螨行两性生殖 ,不交配或交配时间不够 ,不产卵或少产 ,有些种类需要多次交配才能完全产卵。 相似文献
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记述采自中国陕西省和贵州省的广翼甲螨亚属Flagellozetes(Cosmogalumna)1新种。该新种与分布在菲利宾的弗拉基米尔广翼甲螨Flagellozetes(Cosmogalumna)vladopesici ErmilovCorpuz-Raros,2015相似,但区别在于:翅形体上不具有多边形网状结构;前背板中部具有不规则的突节;后背板中央孔明显。首次记录瑕饰广翼甲螨Flagellozetes(Cosmogalumna)ornata Aoki,1988在中国的分布。 相似文献
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Inga Moro
ko-Bi
evska Arturs Stalas Gunrs Lcis Valda Laugale Ina Bae Neda Zue Sarmte Strautia 《The Annals of applied biology》2022,180(1):26-43
The production of Ribes (Rosaceae) in temperate regions in Europe, Asia and New Zealand is severely constrained by damages of Cecidophyopsis mites (Acari: Eriophyidae) and blackcurrant reversion virus (BRV) (Nepovirus, Secoviridae). The infestation of Ribes plants with Cecidophyopsis mites and BRV infection is a complex tripartite system. This paper reviews scientific progress and knowledge gaps on the Cecidophyopsis-BRV-Ribes complex emphasising Cecidophyopsis mites as a pest and natural vector of BRV, BRV as a pathogen, and Ribes as a host plant with horticultural significance. Cecidophyopsis species occurring on Ribes, their host range, geographic distribution and the role in BRV transmission is reviewed. Blackcurrant reversion disease symptoms and BRV hosts are analysed. Resistance of Ribes to Cecidophyopsis and BRV, and resistance breeding aspects are discussed. Discrepancies in research data, controversies and problems are highlighted, and further research is suggested to clarify some of the controversial aspects. 相似文献
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The paper analyses the distribution and seasonal changes in numbers of the water mite fauna of Lake Maarsseveen I. Water mites
were collected from 1977 until 1986 by dipnet, underwater light trap, hydraulic lift sampler and by frame net. Fifty-two species
belonging to the Hydrachnellae and one to the Halacaridae were sampled. The faunal picture obtained is characteristic of mesotrophic
to eutrophic lakes.Arrenurus nobilis. Piona paucipora andP. imminuta can be characterised as lake species. The dominant species in the littoral sand flat areHygrobates nigromaculatus andH. trigonicus, at a depth of 0.5–1 m, andMideopsis orbicularis at depths of 2–7 m.Limnesia maculata is also very common on depths between 2 and 7 m. In early summer, however, they prefer shallow water up to 1 m depth.
Some species likeHygrobates nigromaculatus andH. trigonicus were not captured by the underwater light trap. The hydraulic lift sampler gave underestimations of the densisty of certain
speciese.g. Hygrobates spp. andLimnesia maculata. Unionicola spp. even can avoid this sampler. Sampling by frame net gave the most realistic data.
The highest number of water mites was observed in the littoral sand flat, generally up to 1000 ind. m−2. The genusHygrobates was represented with an average of 800 adult ind. m−2 throughout the year, and appeared to be the main invertebrate predator in this habitat. 相似文献
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P. Angelini A. Arcangeli G. Bistocchi A. Rubini R. Venanzoni C. Perini 《Plant biosystems》2017,151(5):915-923
An annotated checklist of 1016 species of fungi (Ascomycota and Basidiomycota), which have been recorded in 95 different localities, from 1990 to 2015, is presented for Umbria (Italy). The checklist was compiled from records of Umbrian fungi in scientific publications, unpublished lists and personal observations. This work represents the first comprehensive checklist of macrofungi for Umbria. Even if not complete, an exhaustive overview of the current knowledge of the mycobiota of Umbria is presented. Although a large amount of the regional territory has still to be explored for mycological diversity, this study offers an important support in compiling red-lists of endangered macrofungi, as well as to identify indicator species of particular habitats to be considered for wildlife reserves, as is currently done in many European countries. 相似文献
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云南医学革螨数值分类研究 总被引:4,自引:0,他引:4
以云南省57种医学革螨作为分类单元,以形态特征为主列出60项分类性状特征来探讨云南省医学革螨不同属和种的亲缘关系。运用SPSS 11.5 统计软件中的系统聚类分析和主成分分析,对57种医学革螨进行了数值分类分析。结果显示:57种医学革螨划分为厉螨科(La
elapidae)、寄螨科(Parasitidae)、皮刺螨科(Dermanyssidae)、赫刺螨科(Hirstionyssidae)和裂胸螨科(Aceosejidae)5个类群。赫刺螨属和棘刺螨属从厉螨科中分离出来另立为赫刺螨科,柏氏禽刺螨归入了皮刺螨科而不是巨刺螨科。分类结果与传统形态分类结果基本一致,因而认为数值分类能比较客观地反映医学革螨各分类阶元的分类地位与亲缘关系。 相似文献
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