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https://www.readbyqxmd.com/read/27921296/digest-selection-on-life-histories-drives-the-formation-of-functional-mitonuclear-associations1
#1
Edward McAssey
The relative importance of interactions between mitochondrial and nuclear genes on adaptation has gained increased attention (see Wolff et al., 2014), although experimental systems to make direct tests of its importance are scarce. Mitonuclear epistasis is when nuclear and mitochondrial genes interact, often at the protein level, and variation in these interactions may result in phenotypic differences (Paliwal et al., 2014). These interactions are often found in the mitochondria where the energy-generating electron transport chain (ETC) is located, and consists of both nuclear and mitochondrial proteins...
December 6, 2016: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/27920606/phylogenetic-placement-of-the-pacific-northwest-subterranean-endemic-diving-beetle-stygoporus-oregonensis-larson-labonte-dytiscidae-hydroporinae
#2
Kojun Kanda, R Antonio Gomez, Richard Van Driesche, Kelly B Miller, David R Maddison
Stygoporus oregonensis Larson & LaBonte is a little-known subterranean diving beetle, which, until recently, had not been collected since the type series was taken from a shallow well in western Oregon, USA, in 1984. Here we report the discovery of additional specimens collected from a nearby well in the Willamette Valley. Sequence data from four mitochondrial genes, wingless, and histone III place Stygoporus Larson & LaBonte in the predominantly Mediterranean subtribe Siettitiina of the Hydroporini. Morphological support for these results is discussed, and details of the collecting circumstances of the new specimens are presented...
2016: ZooKeys
https://www.readbyqxmd.com/read/27920604/two-new-species-of-the-megadiverse-lentic-diving-beetle-genus-hydrovatus-coleoptera-dytiscidae-described-from-ne-thailand
#3
Olof Biström, Johannes Bergsten
Here we describe two new Hydrovatus species (Coleoptera: Dytiscidae: Hydroporinae: Hydrovatini) from the province of Khon Kaen, Isan region in NE Thailand. Hydrovatus is the third most species rich genus of diving beetles (Dytiscidae). It occurs on all continents except Antarctica and now numbers 210 currently recognized species. Both new species, Hydrovatus diversipunctatussp. n. and Hydrovatus globosussp. n., were collected at lights and are only known from the type locality "Khon Kaen" (a city and province)...
2016: ZooKeys
https://www.readbyqxmd.com/read/27918112/validation-of-adam10-metalloprotease-as-a-bacillus-thuringiensis-cry3aa-toxin-functional-receptor-in-colorado-potato-beetle-leptinotarsa-decemlineata
#4
V M Ruiz-Arroyo, I García-Robles, C Ochoa-Campuzano, G A Goig, E Zaitseva, G Baaken, A C Martínez-Ramírez, C Rausell, M D Real
Bacillus thuringiensis parasporal crystal proteins (Cry proteins) are insecticidal pore-forming toxins that bind to specific receptor molecules on the brush border membrane of susceptible insect midgut cells to exert their toxic action. In the Colorado potato beetle (CPB), a coleopteran pest, we previously proposed that interaction of Cry3Aa toxin with a CPB ADAM10 metalloprotease is an essential part of the mode of action of this toxin. Here, we annotated the gene sequence encoding an ADAM10 metalloprotease protein (CPB-ADAM10) in the CPB genome sequencing project, and using RNA interference gene silencing we demonstrated that CPB-ADAM10 is a Cry3Aa toxin functional receptor in CPB...
December 5, 2016: Insect Molecular Biology
https://www.readbyqxmd.com/read/27917060/antarctotrechus-balli-sp-n-carabidae-trechini-the-first-ground-beetle-from-antarctica
#5
Allan C Ashworth, Terry L Erwin
Fossil elytra of a small trechine carabid are reported from the Oliver Bluffs on the Beardmore Glacier at lat. 85°S. They were compared with counterparts from the extant genera Trechisibus, Tasmanorites, Oxytrechus and Pseudocnides. The fossils share some characters but are sufficiently different to be described as a new genus and species. We named the new species Antarctotrechus balli in honour of George E. Ball who made major contributions to the study of carabids through his own research and the training of students while at the University of Alberta, Edmonton, Alberta, Canada...
2016: ZooKeys
https://www.readbyqxmd.com/read/27917015/difference-in-parenting-in-two-species-of-burying-beetle-nicrophorus-orbicollis-and-nicrophorus-vespilloides
#6
Kyle M Benowitz, Elizabeth C McKinney, Allen J Moore
Burying beetles (Nicrophorus) are model parents among insects, with all studied species known to regurgitate flesh from vertebrate carcasses to their offspring. However, most studies focus on a very few species, yet the interpretation of the function and importance of care is typically generalized to all burying beetles. Here we characterize subtle variation within and between individuals and sexes, and how this variation differs between two species of burying beetle. We find that Nicrophorus orbicollis exhibits low variance, with a normal distribution of parental care provided during peak care periods...
September 2016: Journal of Ethology
https://www.readbyqxmd.com/read/27914926/metschnikowia-cf-typographi-and-other-pathogens-from-the-bark-beetle-ips-sexdentatus-prevalence-histological-and-ultrastructural-evidence-and-molecular-characterization
#7
Regina G Kleespies, Young Woon Lim, Cezary Tkaczuk, Marta Wrzosek, Bernhardt M Steinwender, Rudolf Wegensteiner
Ips sexdentatus (Six-spined engraver beetle) from Austria and Poland were dissected and examined for the presence of pathogens. Specimens collected in Austria were found to contain the ascomycetous fungus Metschnikowia cf. typographi. Infection rates ranged from 3.6% to 26.8% at different collection sites. M. cf. typographi infected midguts were investigated by histological, ultrastructural and molecular techniques. Extraordinary ultrastructural details are shown, such as ascospores with bilateral flattened flanks resembling alar rims at both sides of their attenuating tube-like ends...
November 30, 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27914553/determination-of-fluoxetine-in-dermestes-maculatus-coleoptera-dermestidae-by-a-spectrophotometric-method
#8
Noelia I Zanetti, Adriana A Ferrero, Néstor D Centeno
The aims of this study were to detect and quantify fluoxetine, an antidepressant, from entomological samples. Larvae, pupae and adults of Dermestes maculatus (Coleoptera, Dermestidae) were reared on pig muscle previously treated with fluoxetine. The concentration selected, 2000mg/kg, emulates a fluoxetine overdose lethal to humans and laboratory animals. Thirty larvae on the fourth and fifth stages, 50 adults and several exuviae were analyzed for fluoxetine content. Detection of fluoxetine was performed by UV spectrophotometry at 270 and 277nm...
December 2016: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/27912024/functional-diversity-of-non-lethal-effects-chemical-camouflage-and%C3%A2-variation-in-fish-avoidance-in-colonizing-beetles
#9
William J Resetarits, Matthew R Pintar
Predators play an extremely important role in natural communities. In freshwater systems, fish can dominate sorting both at the colonization and post-colonization stage. Specifically, for many colonizing species, fish can have non-lethal, direct effects that exceed the lethal direct effects of predation. Functionally diverse fish species with a range of predatory capabilities have previously been observed to elicit functionally equivalent responses on oviposition in tree frogs. We tested this hypothesis of functional equivalence of non-lethal effects for four predatory fish species, using naturally colonizing populations of aquatic beetles...
December 2016: Ecology
https://www.readbyqxmd.com/read/27907251/climate-influences-on-whitebark-pine-mortality-from-mountain-pine-beetle-in-the-greater-yellowstone-ecosystem
#10
Polly C Buotte, Jeffrey A Hicke, Haiganoush K Preisler, John T Abatzoglou, Kenneth F Raffa, Jesse A Logan
Extensive mortality of whitebark pine, beginning in the early to mid-2000s, occurred in the Greater Yellowstone Ecosystem (GYE) of the western USA, primarily from mountain pine beetle but also from other threats such as white pine blister rust. The climatic drivers of this recent mortality and the potential for future whitebark pine mortality from mountain pine beetle are not well understood, yet are important considerations in whether to list whitebark pine as a threatened or endangered species. We sought to increase the understanding of climate influences on mountain pine beetle outbreaks in whitebark pine forests, which are less well understood than in lodgepole pine, by quantifying climate-beetle relationships, analyzing climate influences during the recent outbreak, and estimating the suitability of future climate for beetle outbreaks...
December 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27901296/novel-forest-decline-triggered-by-multiple-interactions-among-climate-an-introduced-pathogen-and-bark-beetles
#11
Carmen M Wong, Lori D Daniels
Novel forest decline is increasing due to global environmental change, yet the causal factors and their interactions remain poorly understood. Using tree ring analyses, we show how climate and multiple biotic factors caused the decline of whitebark pine (Pinus albicaulis) in 16 stands in the southern Canadian Rockies. In our study area, 72% of whitebark pines were dead and 18% had partially dead crowns. Tree mortality peaked in the 1970s; however, the annual basal area increment of disturbed trees began to decline significantly in the late 1940s...
November 5, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27899070/multigene-phylogenetic-analysis-redefines-dung-beetles-relationships-and-classification-coleoptera-scarabaeidae-scarabaeinae
#12
Sergei Tarasov, Dimitar Dimitrov
BACKGROUND: Dung beetles (subfamily Scarabaeinae) are popular model organisms in ecology and developmental biology, and for the last two decades they have experienced a systematics renaissance with the adoption of modern phylogenetic approaches. Within this period 16 key phylogenies and numerous additional studies with limited scope have been published, but higher-level relationships of this pivotal group of beetles remain contentious and current classifications contain many unnatural groupings...
November 29, 2016: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/27889916/precipitation-alters-interactions-in-a-grassland-ecological-community
#13
Nicolas Deguines, Justin S Brashares, Laura R Prugh
1.Climate change is transforming precipitation regimes worldwide. Changes in precipitation regimes are known to have powerful effects on plant productivity, but the consequences of these shifts for the dynamics of ecological communities are poorly understood. This knowledge gap hinders our ability to anticipate and mitigate the impacts of climate change on biodiversity. 2.Precipitation may affect fauna through direct effects on physiology, behavior or demography, through plant-mediated indirect effects, or by modifying interactions among species...
November 27, 2016: Journal of Animal Ecology
https://www.readbyqxmd.com/read/27889864/erratum-to-synergism-between-enantiomers-creates-species-specific-pheromone-blends-and-minimizes-cross-attraction-for-two-species-of-cerambycid-beetles
#14
Linnea R Meier, Yunfan Zou, Jocelyn G Millar, Judith A Mongold-Diers, Lawrence M Hanks
No abstract text is available yet for this article.
November 26, 2016: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/27886136/interactions-between-the-multicolored-asian-lady-beetle-harmonia-axyridis-and-the-parasitoid-dinocampus-coccinellae
#15
Maria Luisa Dindo, Santolo Francati, Alberto Lanzoni, Cinzia di Vitantonio, Elisa Marchetti, Giovanni Burgio, Stefano Maini
Harmonia axyridis (Pallas) has been introduced either intentionally or accidentally in different areas outside its native range, where it is often regarded as invasive. Dinocampus coccinellae (Schrank) has been recorded to parasitize H. axyridis in the field, both in the native and introduced areas, Italy included. The percent of parasitism found in our field investigation was low (four percent). The effect of exposure time of H. axyridis to D. coccinellae and the impact of parasitization on host longevity, oviposition capacity and egg fertility were evaluated in the laboratory...
November 24, 2016: Insects
https://www.readbyqxmd.com/read/27885782/field-evaluation-of-3-hydroxy-2-hexanone-and-ethanol-as-attractants-for-the-cerambycid-beetle-pest-of-vineyards-xylotrechus-arvicola
#16
Álvaro Rodríguez-González, Esteban Sánchez-Maíllo, Horacio J Peláez, Manuel González-Núñez, David R Hall, Pedro A Casquero
BACKGROUND: The beetle Xylotrechus arvicola (Coleoptera: Cerambycidae) is a serious pest of vineyards in the Iberian Peninsula. In previous work, the male beetles, but not females, were shown to produce (R)-3-hydroxy-2-hexanone, and female beetles were attracted to this compound in a laboratory bioassay. In this study, release rates of 3-hydroxy-2-hexanone from different dispensers were measured in the laboratory and the attractiveness of these to X. arvicola adults determined in trapping tests in three traditional wine-growing regions in Spain...
November 25, 2016: Pest Management Science
https://www.readbyqxmd.com/read/27881799/water-deficit-and-fungal-infection-can-differentially-affect-the-production-of-different-classes-of-defense-compounds-in-two-host-pines-of-mountain-pine-beetle
#17
Nadir Erbilgin, Jonathan A Cale, Inka Lusebrink, Ahmed Najar, Jennifer G Klutsch, Patrick Sherwood, Pierluigi Enrico Bonello, Maya L Evenden
Bark beetles are important agents of tree mortality in conifer forests and their interaction with trees is influenced by host defense chemicals, such as monoterpenes and phenolics. Since mountain pine beetle (Dendroctonus ponderosae Hopkins) has expanded its host range from lodgepole pine (Pinus contorta Doug. ex Loud. (var. latifolia Engelm.))-dominated forests to the novel jack pine (Pinus banksiana Lamb.) forests in western Canada, studies investigating the jack pine suitability as a host for this beetle have exclusively focused on monoterpenes, and whether phenolics affect jack pine suitability to mountain pine beetle and its symbiotic fungus Grosmannia clavigera is unknown...
November 22, 2016: Tree Physiology
https://www.readbyqxmd.com/read/27879459/clinical-and-epidemiological-features-of-paederus-dermatitis-among-nut-farm-workers-in-turkey
#18
Emel Uzunoğlu, Işıl Deniz Oğuz, Büşra Kır, Cihangir Akdemir
Paederus dermatitis is an acute irritant dermatitis resulting from contact with the hemolymph of Paederus beetles. This dermatitis mimics other infectious skin disorders, often resulting in diagnostic dilemmas. This study of 46 patients was conducted to increase awareness about Paederus dermatitis. Possible causes of a number of cases of Paederus dermatitis in Giresun, Turkey, were investigated using climate data and telephone interviews with the patients about risk factors. Insects caught by patients were identified at the species level...
November 22, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27871814/dr-alois-huger-laying-the-foundations-for-an-integrated-insect-pathology
#19
Trevor A Jackson
Dr. rer. nat. Alois M. Huger had a long and distinguished career at the Institut für biologische Schädlingsbekämpfung (Institute for Biological Pest Control) Darmstadt, Germany, where he became one of the world's leading insect pathologists. He applied his experience and understanding of insect tissues and specialist skills in microscopy to diagnosis and elucidation of the pathology of insect diseases. During his career he discovered the Oryctes nudivirus and Bacillus thuringiensis subsp. tenebrionis, and was a member of teams unravelling amber disease in scarab beetles and the role of bacteria in parthenogenesis of parasitoids...
November 18, 2016: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/27871337/the-great-spruce-bark-beetle-dendroctonus-micans-kug-coleoptera-scolytidae-in-lithuania-occurrence-phenology-morphology-and-communities-of-associated-fungi
#20
A Menkis, J Lynikienė, A Marčiulynas, A Gedminas, A Povilaitienė
We studied the occurrence, morphology and phenology of Dendroctonus micans in Lithuania and the fungi associated with the beetle at different developmental stages. The occurrence of D. micans was assessed in 19 seed orchards (at least 40 years old) of Picea abies (L. Karst.) situated in different parts of the country. Bark beetle phenology was studied in two sites: a seed orchard of P. abies and a plantation of Picea pungens (Engelm.). D. micans morphology was assessed under the dissection microscope using individuals at different developmental stages that were sampled during phenology observations...
November 22, 2016: Bulletin of Entomological Research
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