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Inflorescences of the Bromeliad Vriesea friburgensis as Nest Sites and Food Resources for Ants and Other Arthropods in Brazil 巴西凤梨属植物的花序作为蚂蚁和其他节肢动物的巢地和食物资源
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-03-02 DOI: 10.1155/2014/396095
Volker S Schmid, S. Langner, J. Steiner, A. Zillikens
For the first time, the usage of bromeliad inflorescences as nesting sites for ants and other arthropods was studied. Frequencies of occurrence of nests were recorded from hollow stems of dried infructescences of the bromeliad Vriesea friburgensis on Santa Catarina Island, southern Brazil. Three habitat types were studied: miconietum and two types of restinga, one with low (restinga-low) and one with high vegetation cover (restinga-high). Additionally, flower visitation by ants was examined in restinga-low. Out of 619 infructescences, 33% contained nests. Ants were the most frequent occupants (82–96% of nests), followed by termites (3–18%) and bees (0–0.6%). Species accumulation curves and diversity indices indicate that the diversity of stem-occupying ant species is highest in restinga-low (eight species observed, 18 predicted) and lowest in restinga-high (four observed and predicted). Highest similarity of compositions of infructescence-inhabiting ant species was recorded between miconietum and restinga-high, lowest between restinga-low and restinga-high. Similarity between compositions of inflorescence-visiting and infructescence-inhabiting species in restinga-low was even higher (compared with the cases described in the previous sentence) although 50% of the involved species were present in only one of the samples. Altogether, our results indicate that inflorescences are important resources for ants and other nest-building insects from flowering season to past-fruiting season.
首次研究了凤梨属植物花序作为蚂蚁和其他节肢动物筑巢地的利用。在巴西南部圣卡塔琳娜岛凤梨干果的空心茎上记录了鸟巢的发生频率。研究了三种生境类型:微盆草和两种复盖植物,一种是低复盖植物(restinga-low),一种是高复盖植物(restinga-high)。此外,研究了蚂蚁在静置低区的访花行为。在619个果序中,33%包含巢。其次是白蚁(3-18%)和蜜蜂(0-0.6%)。物种积累曲线和多样性指数表明,低静息区占茎蚁物种多样性最高(8种,预测18种),高静息区占茎蚁物种多样性最低(4种)。蚁群结构相似性最高的是小蚁群和高蚁群,最低的是高蚁群和低蚁群。在restinga-low中,访花物种和寄生物种组成的相似性甚至更高(与前一句描述的情况相比),尽管50%的相关物种只存在于一个样本中。综上所述,我们的研究结果表明,从开花季节到果后季节,花序是蚂蚁和其他筑巢昆虫的重要资源。
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引用次数: 7
An Ultrastructural and Fluorescent Study of the Teratocytes of Microctonus aethiopoides Loan (Hymenoptera: Braconidae) from the Hemocoel of Host Alfalfa Weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) 寄主紫花象鼻虫血腔中茧蜂(膜翅目:茧蜂科)致畸细胞的超微结构和荧光研究
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-02-04 DOI: 10.1155/2014/652518
K. Shelby, J. Habibi, B. Puttler
The braconid wasp Microctonus aethiopoides Loan is an idiobiont endoparasitoid of alfalfa weevil adults Hypera postica (Gyllenhal). After oviposition and subsequent egg maturation, large trophic cells called teratocytes dissociate from the serosa and are released into the host hemocoel. These teratocytes are present in large numbers and are visible to the naked eye. It is thought that they accumulate host hemocoelic metabolites for later consumption by the parasitoid larvae. We have undertaken a microscopic study of these gargantuan and complex cells at approximately seven months after parasitization. Parasitized adult weevils were dissected into medium and teratocytes were fixed, embedded, and sectioned at 1 μm. Teratocytes were stained with various specific fluorescent dyes for plasma membrane, Golgi, nuclei, lysosomes, mitochondria, and endoplasmic reticulum (ER). The surface of each cell is covered with a dense microvillar layer. Analysis of fluorescent images showed that these cells do not have condensed nuclei. ER was abundant around the nuclear envelope. Lysosomes were positioned around the periphery of the nucleus and the Golgi apparatus was significantly enlarged, being located around the nuclear envelope.
小茧蜂是紫花苜蓿象鼻虫成虫的一种特有种内寄生昆虫。在产卵和随后的卵子成熟后,称为畸胎瘤细胞的大型营养细胞从浆膜中分离出来,释放到宿主血中。这些畸胎化细胞大量存在,肉眼可见。据认为,它们积累宿主的结肠代谢物,供以后的寄生蜂幼虫食用。我们在寄生大约7个月后对这些庞大而复杂的细胞进行了显微镜研究。将被寄生的成虫剥入培养液中,在1 μm处固定、包埋并切片。用不同的荧光染料对畸胎化细胞的质膜、高尔基体、细胞核、溶酶体、线粒体和内质网进行染色。每个细胞的表面都覆盖着致密的微绒毛层。荧光图像分析显示,这些细胞没有凝聚的细胞核。核膜周围ER丰富。溶酶体位于细胞核周围,高尔基体明显增大,位于核膜周围。
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引用次数: 3
Notes on the Biology of the Cixiid Planthopper Cixius meridionalis (Hemiptera: Fulgoroidea) 子午慈禧属飞虱生物学研究(半翅目:飞虱科)
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-02-03 DOI: 10.1155/2014/769021
M. Bowser
With the exception of a handful of economically important species, the biology of cixiid planthoppers (Hemiptera: Fulgoroidea: Cixiidae) is poorly known. The host plants and life history of Cixius meridionalis Beirne were investigated in a wetland in Soldotna, Alaska. Specimens were collected over the course of the growing season by hand, aspirator, Berlese funnel, and sweep net. A handful of live nymphs were placed in a terrarium containing potential host plants for direct observation of feeding. C. meridionalis was found to feed on roots of Picea mariana (Mill.) Britton, Sterns & Poggenb, Empetrum nigrum L., Chamaedaphne calyculata (L.) Moench, and Vaccinium vitis-idaea L. At least within the study area, C. meridionalis appears to require multiple years to reach adulthood, with overwintering in nymphal instars. C. meridionalis was occasionally tended by Myrmica alaskensis Wheeler.
除少数具有重要经济价值的种属外,对棘飞虱(半翅目:棘飞虱总科:棘飞虱科)的生物学知之甚少。在美国阿拉斯加州索尔多纳湿地调查了子午慈猴的寄主植物和生活史。标本在整个生长季节通过手、吸引器、伯氏漏斗和扫网收集。将少量活若虫放置在含有潜在寄主植物的玻璃容器中,直接观察其取食情况。经发现子午锥虫以云杉(Picea mariana, Mill.)的根为食。Britton, Sterns & Poggenb, Empetrum nigrum L., Chamaedaphne calculata (L.)至少在研究区域内,子阴锥虫似乎需要多年才能成年,并在若虫中越冬。间或有月桂草照料。
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引用次数: 4
The Effect of Conspecific Density on Emergence of Lestes bipupillatus Calvert, 1909 (Odonata: Lestidae) 同种密度对双pupillatus Calvert, 1909羽化的影响(蜱螨目:蜱螨科)
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-01-30 DOI: 10.1155/2014/650427
Ricardo Cardoso-Leite, G. Vilardi, R. Guillermo‐Ferreira, P. Bispo
Conspecific density may influence adult recruitment and consequently population dynamics. Several studies have shown the density dependence of larvae growth rates in Odonata. However, few studies studied how conspecific density influence final instar larvae emergence date decisions. Considering that larvae may choose the date of emergence, the present study investigated if density affects larvae choice. For this, we reared eight final instar larvae in individual aquaria and other 24 larvae in aquaria with three larvae each. This way, we simulated environments with low and high larval densities. We then noted the days that larvae took to emerge and compared it between low and high density groups. The results showed that larvae seem to emerge earlier when in high densities (Mann-Whitney, , ). These results support the hypothesis that damselfly last instar larvae may postpone or hasten emergence in response to the social environment and related constraints.
同种密度可能影响成虫的招募,从而影响种群动态。有几项研究表明,大腹蛇幼虫的生长速度与密度有关。然而,很少有研究研究同虫密度对末龄幼虫羽化日期的影响。考虑到幼虫可以选择出蛹的日期,本研究探讨了密度是否影响幼虫的选择。为此,我们在单个水族箱中饲养了8只末龄幼虫,在水族箱中饲养了24只幼虫,每个水族箱饲养了3只幼虫。通过这种方式,我们模拟了低密度和高密度的环境。然后,我们记录了幼虫出现的天数,并将其在低密度组和高密度组之间进行比较。结果表明,密度越大,幼虫出现时间越早(Mann-Whitney,,)。这些结果支持了豆娘末龄幼虫对社会环境和相关约束的反应可能推迟或加速羽化的假设。
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引用次数: 3
Diversity and Composition of Beetles (Order: Coleoptera) of Durgapur, West Bengal, India 印度西孟加拉邦杜尔加普尔地区甲虫(鞘翅目)的多样性和组成
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-01-30 DOI: 10.1155/2014/792746
Moitreyee Banerjee
A survey of beetle faunal diversity and composition was studied in Durgapur Municipal Corporation, Durgapur, West Bengal, from January to December 2012. Beetles were collected using standard trapping methods from three different sites selected on the basis of their specific habitat differences, identified up to the level of family, and counted monthly. A total of 9 families were reported from the study site. The second site, that is, Site B, showed the highest diversity. It is also noted that the highest diversity was found during monsoon in all the three sites.
2012年1 - 12月,在西孟加拉邦杜尔加普尔市杜尔加普尔市政公司对甲虫的区系多样性和组成进行了调查。采用标准诱捕法,根据不同生境选择3个不同地点,按科分类,按月统计。研究现场共报告了9个家庭。第二样地B的多样性最高。值得注意的是,在季风期间,这三个地点的多样性最高。
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引用次数: 18
Sex-Pheromone-Mediated Mating Disruption Technology for the Oriental Fruit Moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae): Overview and Prospects 性信息素介导的东方果蛾(鳞翅目:蛾科)交配中断技术综述与展望
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-01-22 DOI: 10.1155/2014/253924
W. Kong, J. Li, Renjun Fan, Shengcai Li, R. Ma
A great deal of progress has been made over the last three decades in research on pheromone-mediated mating disruption technology for the oriental fruit moth, Grapholita molesta (Busck). Pheromones can interrupt normal orientation, and the most likely mechanism of pheromone disruption, competitive-attraction (false-plume following), invokes competition between point sources of pheromone formulation and females for males. This technology, performed by broadcasting pheromones into orchards to disrupt mate finding, has been successfully implemented in oriental fruit moth control. Reservoir-style dispensers made of polyethylene tubes, which release pheromone throughout the full growing season, are the current industry standard. Although reasonably effective, they require labor-intensive hand application. Recently, a new formulation, paraffin wax, which maximizes competition between point sources of synthetic pheromone and feral females for males, was shown to have high disruption performance. As this formulation is highly effective, inexpensive, and easy to produce, further study and development are advisable. Increased understanding of the principles of mating disruption will aid in the design of more effective dispensers. Continued research is needed to meet grower concerns with regard to risk, efficacy, and cost and to identify other semiochemicals that can be applied to this delivery system. Greater knowledge of the integration of different biological control methods is therefore essential.
近三十年来,信息素介导的东方果蛾(Grapholita molesta)交配中断技术研究取得了很大进展。信息素可以干扰正常的定向,信息素干扰最可能的机制,竞争性吸引(假羽跟随),引起信息素形成的点来源和雌性之间的竞争。该技术通过在果园中播撒信息素来干扰交配,已成功地应用于东方果蛾的防治。由聚乙烯管制成的水库式分配器,在整个生长季节释放信息素,是目前的行业标准。虽然它们相当有效,但需要大量的手工操作。最近,一种新的配方石蜡被证明具有很高的破坏性能,它可以最大限度地提高合成信息素的点源与野生雌性之间对雄性的竞争。该制剂具有高效、廉价、易生产等优点,值得进一步研究开发。增加对交配中断原理的理解将有助于设计更有效的分配器。需要继续进行研究,以满足种植者对风险、功效和成本的关注,并确定可应用于该输送系统的其他化学物质。因此,加强对综合不同生物防治方法的了解是必不可少的。
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引用次数: 25
Ovicidal Activity of Couroupita guianensis (Aubl.) against Spodoptera litura (Fab.) 贵州绵虱对斜纹夜蛾的杀卵活性研究
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2014-01-20 DOI: 10.1155/2014/783803
K. Baskar, C. Muthu, S. Ignacimuthu
Hexane, chloroform, and ethyl acetate extracts of Couroupita guianensis leaves were studied for ovicidal activity against S. litura. All the extracts showed ovicidal activity against S. litura. Maximum activity was noticed in hexane extract and it showed the least LC50 and LC90 values; the regression equation was also higher than the other extracts. All the analyzed values showed homogeneity variance. The active hexane extract was fractionated and eight fractions were isolated. The fractions were studied at different concentrations. Among the fractions, fraction 8 showed maximum ovicidal activity with least LC50 and LC90 values. Fraction 8 differed statistically from the other fractions; the regression equation value was higher than the other fractions. All the P values obtained from regression analysis were significant. The results of the present investigation clearly suggest that the active fraction could be purified to isolate active compound(s) and could be used to develop an insecticidal formulation to control economically important agricultural pests.
研究了桂皮叶的己烷、氯仿和乙酸乙酯提取物对斜纹夜蛾的杀卵活性。所有提取物均具有杀卵活性。以己烷提取物活性最高,LC50和LC90值最低;回归方程也高于其他提取物。所有分析值均呈齐性方差。对活性己烷提取液进行分馏,分离出8个馏分。研究了不同浓度下的馏分。其中,组分8的杀卵活性最高,LC50和LC90值最低。分数8与其他分数有统计学差异;回归方程值高于其他分数。回归分析得到的P值均显著。本研究结果清楚地表明,该活性部位可被纯化以分离出活性化合物,并可用于开发杀虫制剂来防治重要的经济农业害虫。
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引用次数: 7
Does Experience Affect the Outcome of Male-Male Contests in the Burying Beetle, Nicrophorus quadripunctatus? 经验是否会影响四角埋甲虫雌雄竞争的结果?
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2013-11-28 DOI: 10.1155/2013/859835
Seizi Suzuki
The bigger individual in a fight usually wins unless the smaller individual is a resident or has recently won a fight. I conducted three experiments on the effects of body size, residency, and fight history on the outcome of male-male fights in a burying beetle. Fights were staged between an intruding male and the male of a male-female pair. When males differed in size, the larger male usually won regardless of residency or individual fight histories. Residents and winners of previous fights won only when competing males were similar in size. Hence, male body size largely determines the outcomes of fights in this beetle.
在战斗中,体型较大的个体通常会获胜,除非体型较小的个体是居民或最近赢得了一场战斗。我做了三个实验,研究体型、居住地和打斗历史对埋虫雄性打斗结果的影响。一只闯入的雄性和一对雄性之间发生了打斗。当雄性体型不同时,体型较大的雄性通常会获胜,而不考虑居住地或个人的战斗历史。只有当竞争的雄性体型相似时,居民和以前的赢家才能获胜。因此,雄性体型在很大程度上决定了这种甲虫战斗的结果。
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引用次数: 1
Social Learning in Bumblebees (Bombus impatiens): Worker Bumblebees Learn to Manipulate and Forage at Artificial Flowers by Observation and Communication within the Colony 大黄蜂(Bombus impatiens)的社会学习:工蜂通过观察和群体内的交流来学习操纵和觅食人造花
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2013-10-29 DOI: 10.1155/2013/768108
H. Mirwan, P. Kevan
Social learning occurs when one individual learns from another, mainly conspecific, often by observation, imitation, or communication. Using artificial flowers, we studied social learning by allowing test bumblebees to (a) see dead bumblebees arranged in foraging positions or (b) watch live bumblebees actually foraging or (c) communicate with nestmates within their colony without having seen foraging. Artificial flowers made from 1.5 mL microcentrifuge tubes with closed caps were inserted through the centres of blue 7 cm plastic discs as optical signals through which the bees could not forage. The reinforcer reward syrup was accessible only through holes in the sides of the tubes beneath the blue discs. Two colonies (A and B) were used in tandem along with control (C and D) colonies. No bee that was not exposed (i.e., from the control colonies (C and D)) to social learning discovered the access holes. Inside colony B, we imprisoned a group of bees that were prevented from seeing or watching. Bees that saw dead bumblebees in foraging positions, those that watched nest-mates foraging, and those that had only in-hive communication with successful foragers all foraged successfully. The means of in-hive communication are not understood and warrant intense investigation.
社会学习是指一个人向另一个人学习,主要是通过观察、模仿或交流。利用人造花,我们通过让测试大黄蜂(a)看到死去的大黄蜂被安排在觅食位置,或(b)看到活的大黄蜂实际觅食,或(c)在没有看到觅食的情况下与蜂巢内的同伴交流,来研究社会学习。用1.5毫升的微离心管制成的人造花,盖上盖子,通过7厘米的蓝色塑料圆盘的中心插入,作为蜜蜂无法觅食的光信号。强化奖励糖浆只能通过蓝色圆盘下面的管子边上的洞进入。两个菌落(A和B)与对照菌落(C和D)串联使用。没有暴露在社会学习环境中的蜜蜂(即来自对照蜂群(C和D))发现了这些通道孔。在B群里,我们囚禁了一群蜜蜂,不让它们看见或观察。那些看到死去的大黄蜂在觅食的蜜蜂,那些看到蜂巢同伴觅食的蜜蜂,以及那些只在蜂巢内与成功的觅食者交流的蜜蜂都成功地觅食了。蜂巢内的通讯方式尚不清楚,需要深入调查。
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引用次数: 13
A New Species of Afrotropical Ants in the Genus Bothroponera (Hymenoptera: Formicidae: Ponerinae) 热带蚁属一新种记述(膜翅目:蚁科:蚁科)
IF 1.1 Q4 Agricultural and Biological Sciences Pub Date : 2013-07-29 DOI: 10.1155/2013/917847
Abdulmeneem M. A. Joma, W. Mackay
We describe a new species of Afrotropical Bothroponera from Whittlesea City, Eastern Cape Province, South Africa. This species is unique among the African Bothroponera as it is the only species with a horizontal propodeal spiracle. It is also the largest species of African Bothroponera (total length 14.80–15.65). The clypeus lacks a medial longitudinal carina, the head is subquadrate, the sculpture is mostly foveolate, and the second gastral segment nearly lacks sculpturing. We compare the new species to the similar B. cavernosa and B. cavernosa var. montivaga. We also compare the new species to all of the other 10 taxa that belong to the cavernosa complex. A key to the cavernosa complex species of the Afrotropical Bothroponera is provided along with diagnosis, comparison, distribution, habitat, biology, and etymology for the new species.
本文报道了来自南非东开普省Whittlesea市的非洲热带Bothroponera一新种。这个物种在非洲Bothroponera中是独一无二的,因为它是唯一一个有水平突起的物种。它也是非洲Bothroponera中最大的物种(全长14.80-15.65)。clypeus缺乏内侧纵隆,头部近方形,雕刻大部分为凹形,第二胃段几乎缺乏雕刻。我们将新种与相似的海绵状芽孢杆菌和海绵状芽孢杆菌进行了比较。我们还将新物种与属于海绵体复合体的其他10个分类群进行了比较。提供了非洲热带Bothroponera海绵体复合种的关键,以及新物种的诊断,比较,分布,栖息地,生物学和词源。
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引用次数: 6
期刊
Psyche: A Journal of Entomology
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