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Shrinking and upward shifting of siberian Jerboa's suitable habitat in China under climate change impacts 气候变化影响下中国西伯利亚箭毒适宜栖息地的缩小和上移
IF 2.6 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-20 DOI: 10.1016/j.jaridenv.2024.105198
Ruixun Gan, Limin Hua, Tao Yu, Zhuangsheng Tang, Xincheng Cai, Rui Dong, Longming Dong, Daerhan Bao, Bin Chu, Yuanyuan Hao

The Siberian jerboa (Orientallactaga sibirica), a keystone species in desert ecosystems and a critical indicator for environmental change assessment. However, little is known about the spatial distribution and habitat suitability of Siberian jerboa in China, particularly under the dual impacts of climate change and human disturbance. This study employed the MaxEnt model to discern key factors affecting the Siberian jerboa's habitat suitability, predicated future habitat shifts in response to climatic and anthropogenic influences. The results reveal that the species predominantly inhabits northwestern China, centering in Gansu's Hexi Corridor and central Inner Mongolia under current climate conditions. Vegetation cover emerges as the primary determinant of its distribution, with elevation, human disturbance, temperature fluctuations, and slope also significantly influencing habitat suitability of the species. The potentially suitable habitat range of the Siberian jerboa is shrinking due to global climate change. Notably, future projections suggest an expansion of its distribution towards the Tibetan Plateau, driven by climate change. This research contributes valuable insights into the adaptive responses of desert rodents to the environmental change.

西伯利亚鼠兔(Orientallactaga sibirica)是荒漠生态系统中的关键物种,也是环境变化评估的重要指标。然而,人们对西伯利亚鼠兔在中国的空间分布和栖息地适宜性知之甚少,尤其是在气候变化和人为干扰的双重影响下。本研究采用 MaxEnt 模型来识别影响西伯利亚鼠兔栖息地适宜性的关键因素,并预测未来栖息地的变化对气候和人为因素的影响。结果表明,在当前气候条件下,该物种主要栖息于中国西北部,以甘肃河西走廊和内蒙古中部为中心。植被覆盖是决定其分布的主要因素,海拔高度、人为干扰、温度波动和坡度也对该物种的栖息地适宜性有显著影响。由于全球气候变化,西伯利亚鼠兔的潜在适宜栖息地范围正在缩小。值得注意的是,未来的预测表明,在气候变化的驱动下,西伯利亚鼠兔的分布范围将向青藏高原扩展。这项研究有助于深入了解沙漠啮齿动物对环境变化的适应性反应。
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引用次数: 0
Primary productivity and animal local density covary in a partially migratory wild guanaco population 在部分迁徙的野生番石榴种群中,初级生产力和当地动物密度共变
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-14 DOI: 10.1016/j.jaridenv.2024.105201
A. Marozzi , A. Panebianco , F.M. Gomez , R. Gonzalez Musso , P.F. Gregorio , N. Schroeder , P. Moreno , F. Peña , P.D. Carmanchahi

Ungulates have physiological and behavioral mechanisms to respond to seasonal variation and resource availability to meet their nutritional needs. To understand the effects of primary productivity in long-term studies, vegetation indices (e.g., enhanced vegetation index, EVI) can be used as indirect indicators of the nitrogen available to herbivores in arid and mountain environments. In this research, we explore the relationship between the variation in guanaco's local density (Lama guanicoe) and the EVI between 2008 and 2017 in a wild partially migratory population of La Payunia Reserve (Mendoza, Argentina) using a weighted linear regression. Our results indicated a significant relation between guanaco local density and EVI (R2 = 0.68; p-value = 0.003), suggesting that the interannual variation in guanaco local density can be explained, at least in part, by higher aerial net primary productivity. Possibly, when nutrient availability is high, the local environment can support a higher local animal density than in years in which primary productivity is lower. When nutrients are limited, some individuals may use other areas not considered in this study. Even preliminary, these results bring new insights into the ecophysiology of this extremely plastic ungulate and contribute to understanding its energetic strategy.

有蹄类动物有生理和行为机制来应对季节变化和资源供应,以满足其营养需求。为了在长期研究中了解初级生产力的影响,植被指数(如增强植被指数,EVI)可作为干旱和山区环境中草食动物可利用氮的间接指标。在这项研究中,我们采用加权线性回归法,探讨了 2008 年至 2017 年期间,在拉帕尤尼亚保护区(阿根廷门多萨)的一个野生部分迁徙种群中,瓜纳科(Lama guanicoe)的本地密度变化与植被指数之间的关系。我们的研究结果表明,观赏鸟的本地密度与 EVI 之间存在显著关系(R2 = 0.68;P 值 = 0.003),这表明观赏鸟本地密度的年际变化至少部分可以用较高的空中净初级生产力来解释。有可能的是,当养分供应量较高时,与初级生产力较低的年份相比,当地环境可以支持较高的当地动物密度。当养分有限时,一些个体可能会使用本研究未考虑的其他区域。即使是初步研究,这些结果也为这种可塑性极强的蹄类动物的生态生理学带来了新的见解,有助于了解其能量策略。
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引用次数: 0
Effect of water stress and temperature on seed germination of five perennial grass species of the semi-arid Pampas 水分胁迫和温度对潘帕斯半干旱地区五种多年生牧草种子萌发的影响
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-13 DOI: 10.1016/j.jaridenv.2024.105211
María Cecilia Scarfó , Dana Aylen Rodriguez , Clara Milano , Alejandro Loydi

Grasslands restoration is crucial to prevent degradation, with direct seeding being the most effective method. Understanding the species environmental requirements is essential for successful establishment. Our objective was to investigate the effect of water stress and temperature on seed germination of five native forage grass species used in semi-arid Pampas restoration projects. Perennial cool-season grasses (Poa ligularis, Nassella tenuis, Piptochaetium napostaense and Nassella longiglumis) and a warm-season grass (Pappophorum vaginatum) were subjected to different water potentials and temperatures. The hydrotime model was used to describe germination patterns. Results showed a decreasing germination percentage with decreasing water potential, being P. ligularis the most drought sensitive, and P. vaginatum and N. tenuis the least. Warm-season species had the shortest germination time under water stress. Temperature affected germination, with higher values observed at 20, 25 and 15/20 °C. Pappophorum vaginatum was more affected by low temperatures than the cool-season grasses. Poa ligularis, with low water stress tolerance and temperature specificity, may not be recommended for restoration strategies.

草地恢复对防止退化至关重要,直接播种是最有效的方法。了解物种对环境的要求对成功建立草场至关重要。我们的目标是研究水胁迫和温度对半干旱潘帕斯草原恢复项目中使用的五种本地牧草种子萌发的影响。我们将多年生冷季型牧草(Poa ligularis、Nassella tenuis、Piptochaetium napostaense 和 Nassella longiglumis)和一种暖季型牧草(Pappophorum vaginatum)置于不同的水势和温度下。采用水时模型来描述发芽模式。结果表明,随着水势的降低,发芽率也在降低,其中ligularis对干旱最敏感,而P. vaginatum和N. tenuis对干旱最不敏感。暖季型物种在水胁迫下的发芽时间最短。温度对发芽有影响,在 20、25 和 15/20 ° C 时发芽率较高。与冷季型禾本科植物相比,Pappophorum vaginatum 受低温的影响更大。Poa ligularis 对水胁迫的耐受性和温度的特异性都很低,因此可能不建议用于恢复策略。
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引用次数: 0
Oil lamps and hearths: A comparative study of the techniques used to illuminate domestic space at Arad and its enclaves in southern Sinai 油灯和炉灶:对西奈半岛南部阿拉德及其飞地家庭照明技术的比较研究
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-13 DOI: 10.1016/j.jaridenv.2024.105199
Benjamin Adam Saidel

Various techniques were used to illuminate domestic structures at EBII Arad (3000-2880 BCE) and its enclaves and outposts in southern Sinai. The dwellings were constructed in a manner that required some form of illumination on overcast days and at night. The residents had three options for lighting the interior of their dwellings: first, sunlight streaming through an open door was the most efficient means of illumination as it did not require the expenditure of fuel; second, the flint “stoves” that were used for cooking provided a certain amount of light; third, lamp-bowls fueled with olive oil were used to illuminate many broadroom dwellings at Arad, but not those in southern Sinai. Lamp-bowls were not used in the latter region because the fuel had to be imported and the amount of light cast by these devices was equivalent to a candle. In this context, hearths were a more appropriate form of illumination as there was a ready supply of firewood in southern Sinai. Lastly, burning olive oil in intact vessels to provide artificial illumination was an act of conspicuous consumption practiced by elites.

在 EBII 阿拉德(公元前 3000-2880 年)及其位于西奈半岛南部的飞地和前哨站,人们使用了各种技术为住宅建筑提供照明。这些住宅的建造方式需要在阴天和夜间提供某种形式的照明。居民有三种照明方式:第一,阳光通过敞开的门照射进来,这是最有效的照明方式,因为它不需要消耗燃料;第二,用来做饭的燧石 "炉子 "可以提供一定的光亮;第三,用橄榄油做燃料的灯笼可以用来照明阿拉德的许多宽大的居室,但西奈半岛南部的居室没有使用这种灯笼。西奈半岛南部没有使用灯碗,因为燃料需要进口,而这些装置的光照量相当于一支蜡烛。在这种情况下,炉灶是一种更合适的照明方式,因为西奈半岛南部有现成的木柴供应。最后,在完好的容器中燃烧橄榄油以提供人工照明是精英阶层的一种显性消费行为。
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引用次数: 0
Long-term monitoring of the columnar cactus Cipocereus minensis reveals unforeseeable reproductive phenology 对柱状仙人掌(Cipocereus minensis)的长期监测揭示了不可预见的繁殖物候期
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-12 DOI: 10.1016/j.jaridenv.2024.105202
Carlos Victor Mendonça Filho , Julya Pires Souza , Liliane Lima Lopes , Yasmine Antonini

Phenological studies with species of cactus have grown in recent decades but the number of species studied remains very low, considering the high species richness of this group. In addition, temporal patterns of flowering and fruiting are important to understanding the processes that govern these crucial events of plant demography and ecology. Based on a five-year study of the reproductive phenology of C. minensis we asked if there is seasonality of flowering and fruiting. Secondly, we tested which climatic variables trigger C. minensis reproductive events in the Espinhaço region. We found that not all individuals produced flowers and fruits each year and a few individuals contributed with most flowers. Flower and immature fruit production is higher during the dry months, with fruits maturing during the rainy season or just before. In general, phenological events were seasonal, except for mature fruit production in 2010 and flower production in 2011. Some phenological traits such as flower timing, frequency, duration, and timing of immature fruit production had not been reported for the genus Cipocereus and were detected only because of the long-term phenological observations. Phenological heterogeneity in cactus might be a response to annual climatic fluctuations, mainly rainfall.

近几十年来,对仙人掌物种的物候学研究不断增加,但考虑到仙人掌物种的丰富性,研究的物种数量仍然很少。此外,开花和结果的时间模式对于了解这些植物人口学和生态学关键事件的过程非常重要。基于对 C. minensis 生殖物候的五年研究,我们提出了开花和结果是否存在季节性的问题。其次,我们测试了在埃斯平哈索地区,哪些气候变量会触发 C. minensis 的生殖活动。我们发现,并非所有个体每年都开花结果,少数个体的花朵最多。在干旱的月份里,花和未成熟果实的产量较高,果实在雨季或雨季前成熟。一般来说,除了 2010 年的成熟果实产量和 2011 年的花朵产量外,其他物候事件都是季节性的。一些物候特征,如开花时间、频率、持续时间和未成熟果实的生产时间等,在西番莲属植物中尚未见报道,只有通过长期物候观测才得以发现。仙人掌的物候异质性可能是对年度气候波动(主要是降雨量)的反应。
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引用次数: 0
Temporal coupling of plant and microbial nitrogen uptake and plant nitrogen reallocation improve grassland nitrogen retention under nitrogen addition 植物和微生物氮吸收与植物氮再分配的时间耦合改善了氮添加条件下草地的氮保持能力
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-08 DOI: 10.1016/j.jaridenv.2024.105195
Jirui Gong , Biao Wang , Zihe Zhang , Liangyuan Song , Siqi Zhang , Weiyuan Zhang , Jiaojiao Dong , Xuede Dong , Yingying Liu , Yuchun Yan

Efficient nitrogen (N) acquisition by plants and microbes and internal reallocation of plant N are crucial for improving ecosystem N retention. However, little is known about shifts in N use strategy between plants and microbes under N addition. We used a15N tracer to investigate effect of N addition (0–25 g N m−2 yr−1) on the N use and retention of plant–microbe–soil system in a temperate Chinese steppe. Adding 2–5 g N m−2 yr−1 increased the ecosystem's ability to retain 15N (65–76%) after 1 year. Plant N demand during the peak growth period depended strongly on rapid N immobilization by microbes during 7 days (immobilized 45% of 15N within 24 h). When root biomass exceeded 0.36 kg m−2, plants competed more strongly for N than the microbes. N addition increased N reallocation from roots to support new shoot growth (79–88% of N), because increased shoot N demand triggered root N transfer when external N was supplied. Thus, the temporal coupling between plant and microbial N use and in N reallocation within plants significantly altered the semi-arid grassland N cycle, and better predicting impacts of future N deposition scenarios.

植物和微生物对氮(N)的高效获取以及植物氮的内部再分配对于提高生态系统的氮保持率至关重要。然而,人们对氮添加情况下植物和微生物之间氮利用策略的转变知之甚少。我们利用 15N 示踪剂研究了氮添加量(0-25 g N m-2 yr-1)对中国温带大草原植物-微生物-土壤系统氮利用和保持的影响。添加 2-5 g N m-2 yr-1 提高了生态系统 1 年后对 15N 的保留能力(65-76%)。植物在生长高峰期对氮的需求在很大程度上取决于微生物在 7 天内对氮的快速固定(24 小时内固定了 45% 的 15N)。当根系生物量超过 0.36 kg m-2 时,植物对氮的竞争比微生物更激烈。氮的添加增加了根系对氮的重新分配,以支持新芽的生长(占氮的 79-88% ),这是因为当外部提供氮时,新芽对氮的需求增加会引发根系对氮的转移。因此,植物和微生物对氮的利用以及植物内部氮的再分配之间的时间耦合极大地改变了半干旱草原的氮循环,并能更好地预测未来氮沉积情景的影响。
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引用次数: 0
Spatial and temporal composition of herbaceous vegetation in Geoffroea decorticans (Gill. Ex Hook. & Arn.) Burkart. thickets Geoffroea decorticans (Gill. Ex Hook. & Arn.) Burkart.灌丛中草本植被的空间和时间组成
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-07 DOI: 10.1016/j.jaridenv.2024.105196
R. Rauber , D. Arroyo , M.A. Cendoya

In the Central Semiarid Region of Argentina, the native woody species Geoffroea decorticans has increased in range and density, probably due to overgrazing. The aim of this work was to evaluate the floristic and functional composition of the herbaceous vegetation along time in grazed sites, within thickets of G. decorticans, and compared to grasslands. We registered the cover of each herbaceous species in different locations within thickets and in the natural grassland, at each season for two years, from autumn 2021 to summer 2023. Indicator species of grasslands were found to be mostly palatable native perennials, resulting more homogeneous than those of thickets. Moreover, the mean cover of palatable species was higher in grasslands than in thickets. Consequently, grasslands confer stability and food resource for livestock. Woody thickets would exhibit a decreased stratification from the center to the edge, that would give rise to niche opportunities and biodiversity reservoirs. Temporal variability in floristic composition indicated differences between grasslands and thickets over time, which decreased in spring, probably by homogenization by grazing in winter. The temporal variability of functional composition showed a cyclical variability in all locations that decreased in spring in all cases.

在阿根廷中部半干旱地区,本地木本植物 Geoffroea decorticans 的分布范围和密度都有所增加,这可能是由于过度放牧造成的。这项研究的目的是评估放牧地草本植被的植物学和功能组成,以及与草地的比较。我们在 2021 年秋季至 2023 年夏季的两年时间里,在灌丛和天然草地的不同位置,在每个季节记录了每种草本植物的覆盖率。结果发现,草地的指示物种主要是适口的本地多年生植物,因此比灌丛中的指示物种更均匀。此外,草地上适口物种的平均覆盖率高于灌丛。因此,草地为牲畜提供了稳定的食物资源。木质灌丛从中心到边缘的分层程度会降低,这将带来生态位机会和生物多样性宝库。植物组成的时变性表明草地和灌丛之间随着时间的推移存在差异,这种差异在春季有所减小,可能是由于冬季放牧造成的同质化。功能组成的时变性在所有地点都显示出周期性变化,在所有情况下都在春季减少。
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引用次数: 0
Reproductive phenology of the non-woody community in a seasonally dry tropical forest and woodland in northeastern Brazil 巴西东北部季节性干旱热带森林和林地非木质群落的生殖物候学
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-05 DOI: 10.1016/j.jaridenv.2024.105193
Sâmia Paula Santos Neves , Adelly Cardoso de Araujo Fagundes , Alexsandro Bezerra-Silva , Paulo Sérgio Neves dos Santos , David Rodrigo Rossatto , Lia d’Afonsêca Pedreira de Miranda , Ligia Silveira Funch

Seasonally dry tropical forests and woodlands (SDTFW) represent one of the world's most endangered biomes. Approximately 56.3% of its species are non-woody, but little is known about their functional adaptations. The reproductive phenologies of 75 SDTFW species (supplementary material A 1) were studied according to their life forms and seed dispersal syndromes in northeastern Brazil. We used circular statistics and the GLM to assess their seasonalities and relationships of their phenologies with environmental variables. The community exhibited continuous pattern of flowering and fruiting. Flowering and fruiting by most species occurred during only a short period of time and were found to be related to rainfall and photoperiod. Moderate peaks in the seasonal activities of therophytes, hemicryptophytes, and camephytes were observed during the rainy season; succulents and epiphytes flowered all year around but fruited only seasonally. Dispersal modes exhibited seasonality of fruiting in the rainy season, with autochory being predominant over zoochory and anemochory. The observed overlapping of fruiting and flowering periods ensures a consistent resource supply throughout the year and contributes to the preservation of vital ecosystem services. These data highlight the importance of conserving these unique semiarid environments and also provide insights for conservation efforts aimed at preserving SDTFW and safeguarding their biodiversity.

季节性干旱热带森林和林地(SDTFW)是世界上最濒危的生物群落之一。其中约 56.3% 的物种为非木本植物,但人们对它们的功能适应性知之甚少。我们根据巴西东北部 75 种 SDTFW 物种(补充材料 A 1)的生活形态和种子传播综合征,对其生殖物候进行了研究。我们使用循环统计和 GLM 评估了它们的季节性及其物候与环境变量的关系。群落表现出连续的开花结果模式。大多数物种的开花和结果只发生在很短的时间内,而且与降雨量和光周期有关。在雨季,食叶植物、半知菌植物和浮游植物的季节性活动达到适度高峰;肉质植物和附生植物全年开花,但只在季节性开花结果。在雨季,果实的传播方式表现出季节性,自传播方式比动物传播方式和非动物传播方式占优势。观察到的结果期和开花期的重叠确保了全年资源供应的一致性,有助于保护重要的生态系统服务。这些数据凸显了保护这些独特的半干旱环境的重要性,也为旨在保护SDTFW和保护其生物多样性的保护工作提供了启示。
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引用次数: 0
Drought and defoliation affect soil extracellular enzyme activity in northern temperate grasslands 干旱和落叶影响北温带草原的土壤胞外酶活性
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-06-02 DOI: 10.1016/j.jaridenv.2024.105197
A.M. Rajper , B.P. Willing , J.F. Cahill , E.W. Bork , S.X. Chang , C.N. Carlyle

Drought has the most significant impact on arid grassland ecosystems. Managed grazing, including the timing and intensity of defoliation, may interact with drought to differentially affect processes related to soil organic matter decomposition. Extracellular enzyme activity (EEA) provides integrated measure of soil microbial activity which affects nutrient cycling. This study examined EEAs in response to five defoliation regimes and drought at seven grasslands across temperate grasslands of Canada. All sites were dominated by perennial grasses and forbs, but differed in plant species, climate, and soils. Soil samples were analyzed for five EEAs involved in carbon (C), nitrogen (N) and phosphorus (P) cycling. Drought reduced activity of enzymes involved in C cycling, β-glucosidase and β-cellobiosidase by 16 and 17%, respectively, P cycling (acid phosphatase) by 11%, and N cycling (N-acetyl-β-glucosaminidase) by 12%. β-xylosidase showed close association with, and was not affected by drought, suggesting a reduction in C turnover under future drought. β-glucosidase activity was reduced by intermediate defoliation relative to both control and heavy. Acid phosphatase and N-acetyl-β-glucosaminidase were affected by three-way interaction of drought, defoliation and mean growing season precipitation, highlighting the complex mechanism underlying EEA responses. Findings suggest that EEA was affected by drought, but defoliation effects were largely dependent upon drought and local climate.

干旱对干旱草原生态系统的影响最大。放牧管理,包括落叶的时间和强度,可能会与干旱相互作用,对土壤有机物质分解过程产生不同影响。胞外酶活性(EEA)是衡量土壤微生物活性的综合指标,会影响养分循环。本研究考察了加拿大温带草原上七处草地的细胞外酶活性对五种落叶机制和干旱的反应。所有地点都以多年生禾本科和草本植物为主,但植物种类、气候和土壤各不相同。对土壤样本中涉及碳(C)、氮(N)和磷(P)循环的五种 EEA 进行了分析。干旱使参与碳循环的酶(β-葡萄糖苷酶和β-纤维二糖苷酶)的活性分别降低了 16% 和 17%,使参与磷循环的酶(酸性磷酸酶)的活性降低了 11%,使参与氮循环的酶(N-乙酰-β-葡萄糖苷酶)的活性降低了 12%。β-木糖苷酶与干旱密切相关,但不受干旱影响,这表明在未来干旱条件下 C 的转化率会降低。相对于对照组和重度落叶,β-葡萄糖苷酶活性因中度落叶而降低。酸性磷酸酶和 N-乙酰基-β-葡萄糖苷酶受干旱、落叶和生长季平均降水量三者相互作用的影响,突出了 EEA 反应的复杂机制。研究结果表明,EEA受干旱影响,但落叶效应主要取决于干旱和当地气候。
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引用次数: 0
Aedes (Stegomyia) aegypti in ditches from an arid region of Argentina 阿根廷干旱地区沟渠中的埃及伊蚊 (Stegomyia)
IF 2.7 3区 环境科学与生态学 Q1 Agricultural and Biological Sciences Pub Date : 2024-05-27 DOI: 10.1016/j.jaridenv.2024.105194
Emeli Illa , Fernando Murúa , Fernando H. Aballay , Florencia Cano , Liliana Salvá , Corina Berón , Leonardo M. Díaz-Nieto

Aedes aegypti is the primary vector of dengue worldwide and is able to transmit several other arboviruses of public health importance. Despite extensive research on its ecology throughout the world, limited attention has been given to arid regions. The province of San Juan is an arid region of Argentina with unique climatic characteristics commonly known as the “monte ecoregion”. It has scarce precipitation and, therefore, has a network of irrigation canals that supply water to the region. The canal system is outdated, poorly maintained and, accumulating small bodies of water of anthropic origin. Urban ditches were checked from January to December 2019, and during January to June, 771 immature specimens of A. aegypti were found. In this work, we report the presence of A. aegypti in ditches, describing for the first-time new breeding sites that, despite their extreme physical and chemical properties, were used as successful larval habitats. The remarkable adaptability of A. aegypti in this breeding sites raises concerns about the possible detection and spread of dengue cases in the province. The alarming expansion of dengue cases in the region further highlights the urgent need to take control measures against this insect.

埃及伊蚊是全球登革热的主要传播媒介,还能传播其他几种对公共卫生具有重要意义的虫媒病毒。尽管全世界对埃及伊蚊的生态学进行了广泛研究,但对干旱地区的关注却很有限。圣胡安省是阿根廷的一个干旱地区,具有独特的气候特征,通常被称为 "蒙特生态区"。该地区降水稀少,因此有一个灌溉渠网为该地区供水。运河系统陈旧落后,维护不善,人为积聚的水体较小。我们在 2019 年 1 月至 12 月期间对城市沟渠进行了检查,并在 1 月至 6 月期间发现了 771 个未成熟的埃及蚁标本。在这项工作中,我们报告了埃及蚁在沟渠中的存在,首次描述了新的繁殖地,尽管它们具有极端的物理和化学特性,但仍被成功地用作幼虫栖息地。埃及蚁在这些繁殖地的出色适应性引起了人们对该省登革热病例的发现和传播的担忧。该地区登革热病例的惊人增长进一步凸显了对这种昆虫采取控制措施的紧迫性。
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引用次数: 0
期刊
Journal of Arid Environments
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