A Macro‐Anatomical Investigation of the Some Skull Bones of Nehring's Blind Mole Rats (Spalacidae: Nannospalax nehringi)          下载免费PDF全文

Ş. Ketani  M. Kilinç  S. Erdoğan  A. Kaya  Y. Coşkun 《Anatomia, histologia, embryologia》2017,46(3):232-239

This study was aimed to demonstrate the specific anatomical features of the skull bones of Nehring's blind mole rats. Eight skulls, belonging to animals of both sexes, were used. The occipital squama contributed to the formation of the caudal portion of the skull roof. The foramen magnum was quite large. The external occipital crest was present only in the males. The parietal bones formed the middle portion of the skull roof together with the well‐developed inter‐parietal bones. The zygomatic process of the temporal bone formed the zygomatic arch by extending to the temporal process of the zygomatic bone. The zygomatic process of the frontal bone and the frontal process of the zygomatic bone laterally bordered the orbit. There was a single septal process of the nasal bone. Each ramus of the mandibula had four processes. The mandibular ramus had an angular process on its caudal rim, which extended dorsolaterally. The dorsal free end of the mandibular ramus possessed a coronoid process. In the back, there were two other processes, situated medially and laterally. The medially situated process was referred to as a condylar process, and the laterally situated process was referred to as an alveolar process. The alveolar process detected on the mandibular ramus has not been reported in any rodent species, other than those of the family Spalacidae. Blind mole rats can be a real eye‐opener for evolutionary science. The burrowing rodents are key to answering a controversial question about how new species arise.  相似文献   

Effects of bioenergy production on environmental sustainability: a preliminary study based on expert opinions in Italy and Turkey     

Tuğba Deniz  Alessandro Paletto 《林业研究》2018,29(6):1611-1626

In future decades, initiatives on biomass-based energy development in Europe should reduce fossil fuel dependence and help to combat climate change as required by the conference of the parties 21. In this context, forest biomass can play a key role within the bioenergy sector due to its high growth potential. The use of forest biomass for energy has positive and negative effects on other ecosystem services, on stand characteristics, and on forest management practices. The aim of this study is to analyse the effects of forest bioenergy production on six ecosystem services (biodiversity, recreation, landscape aesthetics, carbon sequestration, soil erosion protection, water quality). These effects have been assessed by 80 experts in two countries (Italy and Turkey), considering two different forest management practices (clear-cutting of coppices and woody residue removal after felling in high forests). The results show that coppice clear-cutting has negative effects on almost all ecosystem services according to the experts’ opinions. The highest negative effects are on landscape aesthetics and soil protection. The effects of woody residue removal on biodiversity, carbon sequestration, soil erosion protection, and water quality are considered negative by the experts, while the effects on recreation activities and landscape aesthetics are considered positive. The highest negative effects of this forest management scenario are on soil protection and biodiversity. The experts’ opinions about the effects of forest management practices on ecosystem services can provide information to understand the environmental sustainability of bioenergy development in future years.  相似文献   

Analysis of temporal changes in land cover and landscape metrics of a managed forest in the west Black Sea region of northern Turkey: 1970–2010     

Hayati Zengin  Ahmet Salih Değermenci  Pete Bettinger 《林业研究》2018,29(1):139-150

Forest structure changes continuously by natural and anthropogenic effects. Because the level of goods and services provided by forest ecosystems are related to this structure, some attributes have to be controlled while they are being managed. In this paper we describe the long-term temporal changes in land area and landscape metrics related to different land uses of a managed forest in Turkey. The study was carried out for the Daday Forest Planning Unit located in the west Black Sea region of northern Turkey. The total area is 16,813 ha and besides wood production, it is managed for erosion control, public health, aesthetics, and recreation. Stand type maps that were constructed in 1970, 1989, 1999, and 2010 were used in this analysis. Transition matrixes that illustrate area changes among cover types and temporal changes on some landscape metrics were obtained using Geographic Information Systems. Stands were separated into small patches, and thus the number of patches increased nearly two-fold between 1970 and 2010. The total forest edge increased and through the associated fragmentation, the amount of core forest area decreased at the landscape scale. Landscape metrics were applied to digitized versions of historical maps to assess how forest area changed. Human use of the land has changed, forest management practices have evolved, and these along with natural forest growth have contributed to interesting changes in landscape character.  相似文献   

Dothistroma spp. in Western Ukraine and Georgia          下载免费PDF全文

I. Matsiakh  H. T. Doğmuş‐Lehtijärvi  V. Kramarets  A. G. Aday Kaya  F. Oskay  R. Drenkhan  Steve Woodward 《Forest Pathology》2018,48(2)

Dothistroma needle blight (DNB) is among the most serious foliar diseases affecting Pinus spp. globally. Infected needles were collected from potential host species in four locations in western Ukraine and in four locations in eastern Georgia during spring–summer 2015 to update the knowledge on pathogen distribution in these countries. Dothistroma spp. were detected using isolation, sequencing and species‐specific priming (SSPP) PCR. Two new hosts for Dothistroma spp. were recorded in western Ukraine: D. septosporum on Pinus nigra var. australica and D. pini on P. nigra var. mollet. D. septosporum was found on 15‐year‐old P. strobus in western Ukraine. New hosts for D. septosporum were recorded in Georgia on 5‐ to 10‐year‐old naturally regenerated P. sylvestris var. hamata and on 40‐ to 50‐year‐old P. ponderosa trees. D. pini was found for the first time in Georgia on 30‐ to 40‐year‐old P. nigra trees. The work confirmed the presence of both D. septosporum and D. pini in western Ukraine and Georgia, and demonstrated new hosts for both Dothistroma species.  相似文献   

蛋白质组学在癌症研究中的进展     

张洋  武爱迪  苗璐  胡建民  李明峰  王玲玲  吴洪涛 《现代畜牧兽医》2011,(5)

蛋白质组学作为后基因组学时代研究的重要课题,已经广泛深入到了生命科学的各个领域,应用蛋白质学技术寻到敏感性、特异性的癌症标志物,为更好地进行癌症诊断研究提供了良好平台。本文对蛋白质组学的现状和相关研究技术进行了介绍,并概括了蛋白质组学在癌症方面的研究进展。  相似文献   

家免传染性鼻炎的发生规律     

谷子林  陈宝江  黄玉亭  任文社  黄仁录 《中国兽医学报》2001,21(4):344-346

研究了家兔传染性鼻炎与饲养密度，兔笼层次，兔笼摆放位置，饲养方式，季节，家兔品种和年龄的关系，结果表明，该病的发生与环境密切相关，用时存在种间差异，发病率随家兔月龄的增加而提高。提出了控制该病必须重视的环境问题。  相似文献   

Does non-native pumpkinseed Lepomis gibbosus affect endemic algae-scraping Capoeta aydinensis in case of introduction to a small stream? An ex situ growth experiment     

Nildeniz Top-Karaku  Ali Serhan Tarkan 《Ecology of Freshwater Fish》2022,31(1):81-86

The survival and establishment of alien fishes in novel environments can result in resource partitioning with native fishes. This can cause ecological impact and suppression of native populations. However, quantifying the impact of novel interactions between alien and native species remains highly challenging in the wild. Consequently, to determine the ecological risk of Lepomis gibbosus in case of introduction to a small stream, experimental approach was used to predict its competitive interaction with a poorly studied endemic fish, Capoeta aydinensis. The aim was to test whether L. gibbosus has an adverse effect on native species using an experimental design under allopatric and sympatric context with temperature regimes of 15 and 24ºC. The results indicated that temperature and fish proportion had effects on the growth of C. aydinensis while these factors were not important for L. gibbosus. These results provided little evidence of L. gibbosus presence being detrimental for endemic C. aydinensis, but nevertheless steps should be taken to avoid their further co-habitation in the wild.  相似文献   

铅锌尾矿渣改良下木本耐性植物的根际环境研究     

周维  陈永华  杜露 《农业现代化研究》2023,44(4):712-723

近年来，木本植物因生物量大、根系发达等特点，被广泛应用于重金属尾矿修复。其中，夹竹桃、栾树、泡桐等品种在铅锌胁迫下，表现出较好的抗性和富集效果。但其对矿渣根际环境的具体影响尚有待明确。本研究取湖南省郴州市某铅锌矿区的矿渣为实验基质，以100%矿渣（CK组）和90%矿渣+5%蘑菇渣+5%碳酸钙（S0组）为对照组；S0组基础上分别种植夹竹桃、栾树、泡桐（S1组）为实验组。通过比较基质的理化性质、有效态Pb和Zn、挥发性有机物、微生物群落结构等指标差异，探究木本耐性植物在铅锌胁迫下的根际环境响应机制。研究结果表明：改良条件下，三种植物能通过基质pH、有机质含量、阳离子交换量、速效氮和有效磷等指标，调节矿渣基质酸碱平衡，从而提高基质持水保肥力。有效态Pb、Zn含量分别下降了16.29%～36.50%和24.50%～47.33%。此外，酯类和酚类等有机化合物种类丰度增加。变形菌门的相对丰度减少，拟杆菌门、放线菌门、慢生根瘤菌属相对丰度增加。综上，改良条件下种植木本植物，改变了基质的理化性质、有机物丰度种类、微生物群落结构，显著降低了矿渣Pb和Zn的生物有效性。  相似文献   

高产抗病夏大豆新品种皖宿1019的选育与栽培技术          下载免费PDF全文

王路路 《农业工程》2022,12(6)

大豆新品种皖宿1019是宿州市农业科学院2009年以郑9805为母本、周02005为父本进行杂交，采用改良系谱法选育而成。该品种2018年、2019年参加安徽省夏大豆区域试验，2年平均产量2574.5kg/hm2，比对照中黄13增产5.78%。2020年生产试验，平均亩产2892.9kg/hm2，比对照中黄13增产8.8%。适宜于安徽淮北地区中等以上肥力地块种植。2021年通过安徽农作物品种审定委员会审定[1][2]（编号：皖审豆20210013）。  相似文献   

The effects of land use changes and management types on surface soil properties in Kafkasör protected area in Artvin,Turkey     

T. Yüksek  O. Kurdolu  F. Yüksek 《Land Degradation \u0026amp; Development》2010,21(6):582-590

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