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https://www.readbyqxmd.com/read/28938083/how-many-species-of-insects-and-other-terrestrial-arthropods-are-there-on-earth
#1
Nigel E Stork
In the last decade, new methods of estimating global species richness have been developed and existing ones improved through the use of more appropriate statistical tools and new data. Taking the mean of most of these new estimates indicates that globally there are approximately 1.5 million, 5.5 million, and 7 million species of beetles, insects, and terrestrial arthropods, respectively. Previous estimates of 30 million species or more based on the host specificity of insects to plants now seem extremely unlikely...
September 22, 2017: Annual Review of Entomology
https://www.readbyqxmd.com/read/28936519/a-simple-way-to-achieve-bioinspired-hybrid-wettability-surface-with-micro-nanopatterns-for-efficient-fog-collection
#2
Kai Yin, Haifeng Du, Xinran Dong, Cong Wang, Ji-An Duan, Jun He
Fog collection is receiving increasing attention for providing water in semi-arid deserts and inland areas. Inspired by the fog harvesting ability of the hydrophobic-hydrophilic surface of Namib desert beetles, we present a simple, low-cost method to prepare a hybrid superhydrophobic-hydrophilic surface. The surface contains micro/nanopatterns, and is prepared by incorporating femtosecond-laser fabricated polytetrafluoroethylene nanoparticles deposited on superhydrophobic copper mesh with a pristine hydrophilic copper sheet...
September 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28932986/temperature-driven-plasticity-in-nutrient-use-and-preference-in-an-ectotherm
#3
Myung Suk Rho, Kwang Pum Lee
Environmental temperature has strong effects on the rate and efficiency of resource use in ectotherms, but little is known about how changes in temperature influence their diet selection patterns. Changes in temperature may alter the balance of nutrients required by ectotherms by affecting metabolism. In response to temperature changes, ectotherms are predicted to express a preference for a specific nutrient (protein or carbohydrate) to match their altered nutrient requirement. Here, we examined the nutritional consequences of mealworm beetles (Tenebrio molitor L...
September 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28931734/cross-taxa-generalities-in-the-relationship-between-population-abundance-and-ambient-temperatures
#4
Diana E Bowler, Peter Haase, Christian Hof, Ingrid Kröncke, Léon Baert, Wouter Dekoninck, Sami Domisch, Frederik Hendrickx, Thomas Hickler, Hermann Neumann, Robert B O'Hara, Anne F Sell, Moritz Sonnewald, Stefan Stoll, Michael Türkay, Roel van Klink, Oliver Schweiger, Rikjan Vermeulen, Katrin Böhning-Gaese
Identifying patterns in the effects of temperature on species' population abundances could help develop a general framework for predicting the consequences of climate change across different communities and realms. We used long-term population time series data from terrestrial, freshwater, and marine species communities within central Europe to compare the effects of temperature on abundance across a broad range of taxonomic groups. We asked whether there was an average relationship between temperatures in different seasons and annual abundances of species in a community, and whether species attributes (temperature range of distribution, range size, habitat breadth, dispersal ability, body size, and lifespan) explained interspecific variation in the relationship between temperature and abundance...
September 27, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28931158/new-mitogenomes-of-two-chinese-stag-beetles-coleoptera-lucanidae-and-their-implications-for-systematics
#5
Zi-Qi Lin, Fan Song, Teng Li, Yuan-Yuan Wu, Xia Wan
Although conspicuous and well-studied, stag beetles have been slow to join the genomic era. In this study, mitochondrial genomes of two stag beetles, Sinodendron yunnanense and Prosopocoilus confucius, are sequenced for the first time. Both of their genomes consisted of 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), 2 ribosomal RNAs (rRNAs), and a control region. The mitogenome of S. yunnanense was 16,921 bp in length, and P. confucius was 16,951 bp. The location of the gene trnL(UUR), between the A + T-rich and control region in S...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28930157/getting-more-power-from-your-flowers-multi-functional-flower-strips-enhance-pollinators-and-pest-control-agents-in-apple-orchards
#6
Alistair John Campbell, Andrew Wilby, Peter Sutton, Felix Wäckers
Flower strips are commonly recommended to boost biodiversity and multiple ecosystem services (e.g., pollination and pest control) on farmland. However, significant knowledge gaps remain regards the extent to which they deliver on these aims. Here, we tested the efficacy of flower strips that targeted different subsets of beneficial arthropods (pollinators and natural enemies) and their ecosystem services in cider apple orchards. Treatments included mixes that specifically targeted: (1) pollinators ('concealed-nectar plants'); (2) natural enemies ('open-nectar plants'); or (3) both groups concurrently (i...
September 20, 2017: Insects
https://www.readbyqxmd.com/read/28926149/speciation-below-ground-tempo-and-mode-of-diversification-in-a-radiation-of-endogean-ground-beetles
#7
Carmelo Andújar, Sergio Pérez-González, Paula Arribas, Juan P Zaballos, Alfried P Vogler, Ignacio Ribera
Dispersal is a critical factor determining the spatial scale of speciation, which is constrained by the ecological characteristics and distribution of a species' habitat and the intrinsic traits of species. Endogean taxa are strongly affected by the unique qualities of the below-ground environment and its effect on dispersal, and contrasting reports indicate either high dispersal capabilities favoured by small body size and mediated by passive mechanisms, or low dispersal due to restricted movement and confinement inside the soil...
September 19, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28925562/the-horizontal-transfer-of-salmonella-between-the-lesser-mealworm-alphitobius-diaperinus-and-poultry-manure
#8
T L Crippen, C L Sheffield, R C Beier, D J Nisbet
There is need to determine the nature of enduring reservoirs of Salmonella contributing to perpetual contamination within poultry flocks. The dispersal of Salmonella between birds, litter and the lesser mealworm has been established, but the extent that these act as critical components in the epidemiology of Salmonella infection during broiler grow-out and flock rotation has not been delineated; in particular, the level of participation by the lesser mealworm beetles (LMB) as agents of retention and dispersal...
September 19, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28925339/improving-the-artificial-diet-for-adult-of-seven-spotted-ladybird-beetle-coccinella-septempunctata-l-coleoptera-coccinellidae-with-orthogonal-design
#9
Y Cheng, J R Zhi, F L Li, W H Li, Y H Zhou
In this study, an orthogonal array design with 16 factors at two levels (216) was performed to develop an artificial diet rearing the adults of seven spotted ladybird beetle Coccinella septempunctata. The parameters of weight gain and survival rate of adults, preoviposition period, fecundity and hatching rate of diet-fed adults were monitored. The 16 factors were included: pork liver, infant formula, sucrose, olive oil, yolk, corn oil, yeast powder, cholesterol, casein, casein hydrolysate, vitamin powder, 65% juvenile hormone III, protein powder, vitamin E, honey and pumpkin...
September 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28923972/small-genome-symbiont-underlies-cuticle-hardness-in-beetles
#10
Hisashi Anbutsu, Minoru Moriyama, Naruo Nikoh, Takahiro Hosokawa, Ryo Futahashi, Masahiko Tanahashi, Xian-Ying Meng, Takashi Kuriwada, Naoki Mori, Kenshiro Oshima, Masahira Hattori, Manabu Fujie, Noriyuki Satoh, Taro Maeda, Shuji Shigenobu, Ryuichi Koga, Takema Fukatsu
Beetles, representing the majority of the insect species diversity, are characterized by thick and hard cuticle, which plays important roles for their environmental adaptation and underpins their inordinate diversity and prosperity. Here, we report a bacterial endosymbiont extremely specialized for sustaining beetle's cuticle formation. Many weevils are associated with a γ-proteobacterial endosymbiont lineage Nardonella, whose evolutionary origin is estimated as older than 100 million years, but its functional aspect has been elusive...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28922899/the-current-status-of-the-distribution-range-of-the-western-pine-beetle-dendroctonus-brevicomis-curculionidae-solytinae-in-northern-mexico
#11
O Valerio-Mendoza, F Armendáriz-Toledano, G Cuéllar-Rodríguez, José F Negrón, G Zúñiga
The distribution range of the western pine beetle Dendroctonus brevicomis LeConte (Coleoptera: Curculionidae) is supported only by scattered records in the northern parts of Mexico, suggesting that its populations may be marginal and rare in this region. In this study, we review the geographical distribution of D. brevicomis in northern Mexico and perform a geometric morphometric analysis of seminal rod shape to evaluate its reliability for identifying this species with respect to other members of the Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae) complex...
September 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28921776/transcriptional-responses-to-short-term-and-long-term-host-plant-experience-and-parasite-load-in-an-oligophagous-beetle
#12
Caroline Müller, Heiko Vogel, David G Heckel
Oligophagous herbivores must adjust their enzymatic machinery to the different host plant species they consume. If different hosts are used from one generation to the next, adaptation may be highly plastic, while if a single host is used over several generations there may be a longer-term response due to natural selection. Using an experimental evolutionary approach, we investigated effects of long-term experience versus short-term responses to different host plants in the oligophagous mustard leaf beetle Phaedon cochleariae...
September 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28920566/field-evolved-resistance-to-%C3%AE-cyhalothrin-in-the-lady-beetle-eriopis-connexa
#13
P M G Costa, J B Torres, V M Rondelli, R Lira
Natural enemies are exposed to insecticide sprays for herbivorous species and may evolve field resistance to insecticides. Natural enemies selected for resistance in the field, however, are welcome for pest control. The susceptibility of 20 populations of Eriopis connexa from various crop ecosystems to λ-cyhalothrin was tested. Three bioassays were conducted: (i) topical treatment with lethal dose (LD)50 previously determined for populations considered standard for susceptibility (LD50S) and for resistance (LD50R) to λ-cyhalothrin at technical grade; (ii) dose-mortality assay to calculate the LD for populations exhibiting significant survival to the LD50R; and (iii) determination of survival when exposed to dried residues at field rates...
September 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28919015/activity-of-bacillus-thuringiensis-cry1ie2-cry2ac7-vip3aa11-and-cry7ab3-proteins-against-anticarsia-gemmatalis-chrysodeixis-includens-and-ceratoma-trifurcata
#14
Rubina Mushtaq, Robert Behle, Rongmei Liu, Lin Niu, Ping Song, Abdul Rauf Shakoori, Juan Luis Jurat-Fuentes
Transgenic soybean producing the Cry1Ac insecticidal protein from the bacterium Bacillus thuringiensis is used to control larvae of the velvetbean caterpillar (Anticarsia gemmatalis Hübner) and the soybean looper [Chrysodeixis includens (Walker)]. The main threat to the sustainability of this technology is the development of resistance, which could be delayed by using pyramiding of diverse Bt insecticidal genes. We report high activity of Cry2Ac7 and Vip3Aa11 but not Cry1Ie2 against larvae of A. gemmatalis and C...
September 14, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28917671/scanning-electron-microscopy-and-histopathological-observations-of-beauveria-bassiana-infection-of-colorado-potato-beetle-larvae
#15
Yulin Duan, Hui Wu, Zhiyan Ma, Liu Yang, Deying Ma
Beauveria bassiana is a potential candidate for use as an environmentally friendly bio-pesticide. We studied the infection process and histopathology of B. bassiana strain NDBJJ-BFG infection of the Colorado potato beetle (Leptinotarsa decemlineata) using scanning electron microscopy and hematoxylin-eosin staining of tissue sections. The results show that the fungus penetrated the insect epidermis through germ tubes and appressoria after spraying the larvae with conidial suspensions. The conidia began to germinate after 24 h and invade the epidermis...
September 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28916787/late-permian-wood-borings-reveal-an-intricate-network-of-ecological-relationships
#16
Zhuo Feng, Jun Wang, Ronny Rößler, Adam Ślipiński, Conrad Labandeira
Beetles are the most diverse group of macroscopic organisms since the mid-Mesozoic. Much of beetle speciosity is attributable to myriad life habits, particularly diverse-feeding strategies involving interactions with plant substrates, such as wood. However, the life habits and early evolution of wood-boring beetles remain shrouded in mystery from a limited fossil record. Here we report new material from the upper Permian (Changhsingian Stage, ca. 254-252 million-years ago) of China documenting a microcosm of ecological associations involving a polyphagan wood-borer consuming cambial and wood tissues of the conifer Ningxiaites specialis...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28912320/complete-genome-sequence-of-spiroplasma-corruscae-ec-1-t-dsm-19793-a-bacterium-isolated-from-a-lampyrid-beetle-ellychnia-corrusca
#17
Yi-Ming Tsai, Wen-Sui Lo, Chih-Horng Kuo
Spiroplasma corruscae EC-1(T) (DSM 19793) was isolated from the gut of a lampryid beetle (Ellychnia corrusca) collected in Beltsville, MD, USA, in 1983. Here, we report the complete genome sequence of this bacterium to facilitate the investigation of its biology and the comparative genomics among Spiroplasma species.
September 14, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28905284/effect-of-cadmium-bioavailability-in-food-on-its-compartmentalisation-in-carabids
#18
Agnieszka J Bednarska, Zuzanna M Świątek, Karolina Paciorek, Natalia Kubińska
Metals assimilated by organisms are sequestered in various compartments and some forms are more stable than others. Sequestration mechanisms used by invertebrates to detoxify metals and prevent interaction with important biomolecules include metal binding to proteins and other ligands, and storage in inorganic granules. The rate and extent at which metal concentrations in different compartments respond to metal concentrations in food and food characteristics has not received much attention, despite being of great relevance...
September 13, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28904812/strongest-grip-on-the-rod-tarsal-morphology-and-attachment-of-japanese-pine-sawyer-beetles
#19
Dagmar Voigt, Takuma Takanashi, Kazuko Tsuchihara, Kenichi Yazaki, Katsushi Kuroda, Remi Tsubaki, Naoe Hosoda
No abstract text is available yet for this article.
2017: Zoological Letters
https://www.readbyqxmd.com/read/28904757/social-dilemma-in-the-external-immune-system-of-the-red-flour-beetle-it-is-a-matter-of-time
#20
Chaitanya S Gokhale, Arne Traulsen, Gerrit Joop
Sociobiology has revolutionized our understanding of interactions between organisms. Interactions may present a social dilemma where the interests of individual actors do not align with those of the group as a whole. Viewed through a sociobiological lens, nearly all interactions can be described regarding their costs and benefits, and a number of them then resemble a social dilemma. Numerous experimental systems, from bacteria to mammals, have been proposed as models for studying such dilemmas. Here, we make use of the external immune system of the red flour beetle, Tribolium castaneum, to investigate how the experimental duration can affect whether the external secretion comprises a social dilemma or not...
September 2017: Ecology and Evolution
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