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https://www.readbyqxmd.com/read/28081188/effect-of-varroa-destructor-wounding-and-varroa-homogenate-on-gene-expression-in-brood-and-adult-honey-bees
#1
Gun Koleoglu, Paul H Goodwin, Mariana Reyes-Quintana, Mollah Md Hamiduzzaman, Ernesto Guzman-Novoa
Honey bee (Apis mellifera) gene expression related to immunity for hymenoptaecin (AmHym) and defensin-1 (AmDef-1), longevity for vitellogenin (AmVit2) and stem cell proliferation for poly U binding factor 68 kDa (AmPuf68) was compared following Varroa destructor parasitism, buffer injection and injection of V. destructor compounds in its homogenate. In adults, V. destructor parasitism decreased expression of all four genes, while buffer injection decreased expression of AmHym, AmPuf68 and AmVit2, and homogenate injection decreased expression of AmPuf68 and AmVit2 but increased expression of AmDef-1 relative to their respective controls...
2017: PloS One
https://www.readbyqxmd.com/read/28076373/larvae-and-nests-of-aculeate-hymenoptera-hymenoptera-aculeata-nesting-in-reed-galls-induced-by-lipara-spp-diptera-chloropidae-with-a-review-of-species-recorded-part-ii
#2
Alena Astapenková, Petr Heneberg, Petr Bogusch
The ability of aculeate Hymenoptera to utilize wetlands is poorly understood, and descriptions of their nests and developmental stages are largely absent. Here we present results based on our survey of hymenopterans using galls induced by Lipara spp. flies on common reed Phragmites australis in the years 2015-2016. We studied 20,704 galls, of which 9,446 were longitudinally cut and the brood from them reared in the laboratory, while the remaining 11,258 galls reared in rearing bags also in laboratory conditions...
2017: PloS One
https://www.readbyqxmd.com/read/28070302/are-life-history-events-of-a-northern-breeding-population-of-cooper-s-hawks-influenced-by-changing-climate
#3
Robert N Rosenfield, Madeline G Hardin, John Bielefeldt, Edward R Keyel
Numerous studies have demonstrated earlier timing of spring migration and egg-laying in small passerines, but documentation of such responses to recent climate change in the life histories of higher trophic feeding birds such as raptors is relatively scarce. Raptors may be particularly susceptible to possible adverse effects of climate change due to their longer generation turnover times and lower reproductive capacity, which could lead to population declines because of an inability to match reproductive timing with optimal brood rearing conditions...
January 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28068581/vitamin-profiles-in-two-free-living-passerine-birds-under-a-metal-pollution-gradient-a-calcium-supplementation-experiment
#4
Sandra R Ruiz, Silvia Espín, Pablo Sánchez-Virosta, Juha-Pekka Salminen, Thomas M Lilley, Tapio Eeva
Vitamin and carotenoid deficiency may impair development in free-living vertebrates, because of the importance of these micronutrients to growth, antioxidant defense and calcium regulation. Micronutrient and calcium insufficiency can be intensified by metal pollution which can interfere with nutrient homeostasis or indirectly reduce food availability. Furthermore, absorption of dietary heavy metals is dependent on food calcium and vitamin levels. We investigated the effect of calcium on plasma vitamin and carotenoid profiles and how these affected growth and survival in two passerine birds with different calcium turnover living along a metal pollution gradient...
January 6, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28068418/paternity-outcomes-in-the-freshwater-gastropod-chilina-dombeiana-in-the-biob%C3%A3-o-river-chile
#5
Jéssica Bórquez, Antonio Brante
Studying the mating system of obligate aquatic organisms that inhabit river ecosystems is important for understanding its evolution as well as the role of biological and environmental factors in modulating population dynamics and species distributional patterns. Here, we studied the reproductive strategy of the Chilean endemic freshwater snail, Chilina dombeiana, in the Biobío River, one of the largest rivers in Chile. This species has a low potential for dispersal given the absence of a free-swimming larval stage (benthic larval development) and given that adults have a low capacity for mobility...
2017: PloS One
https://www.readbyqxmd.com/read/28065296/patterns-and-drivers-of-egg-pigment-intensity-and-colour-diversity-in-the-ocean-a-meta-analysis-of-phylum-echinodermata
#6
E M Montgomery, J-F Hamel, A Mercier
Egg pigmentation is proposed to serve numerous ecological, physiological, and adaptive functions in egg-laying animals. Despite the predominance and taxonomic diversity of egg layers, syntheses reviewing the putative functions and drivers of egg pigmentation have been relatively narrow in scope, centring almost exclusively on birds. Nonvertebrate and aquatic species are essentially overlooked, yet many of them produce maternally provisioned eggs in strikingly varied colours, from pale yellow to bright red or green...
2017: Advances in Marine Biology
https://www.readbyqxmd.com/read/28053207/dynamics-of-weight-change-and-temperature-of-apis-mellifera-hymenoptera-apidae-colonies-in-a-wintering-building-with-controlled-temperature
#7
E Stalidzans, A Zacepins, A Kviesis, V Brusbardis, J Meitalovs, L Paura, N Bulipopa, M Liepniece
Honey bee wintering in a wintering building (indoors) with controlled microclimate is used in some cold regions to minimize colony losses due to the hard weather conditions. The behavior and possible state of bee colonies in a dark room, isolated from natural environment during winter season, was studied by indirect temperature measurements to analyze the expression of their annual rhythm when it is not affected by ambient temperature, rain, snow, wind, and daylight. Thus, the observed behavior in the wintering building is initiated solely by bee colony internal processes...
January 4, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28053061/food-availability-affects-adult-survival-trajectories-depending-on-early-developmental-conditions
#8
Michael Briga, Egbert Koetsier, Jelle J Boonekamp, Blanca Jimeno, Simon Verhulst
Food availability modulates survival in interaction with (for example) competition, disease and predators, but to what extent food availability in natural populations affects survival independent of these factors is not well known. We tested the effect of food availability on lifespan and actuarial senescence in a large population of captive zebra finches by increasing the effort required to obtain food, reflecting natural contrasts in food availability. Food availability may not affect all individuals equally and we therefore created heterogeneity in phenotypic quality by raising birds with different numbers of siblings...
January 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28052504/weather-habitat-composition-and-female-behavior-interact-to-modify-offspring-survival-in-greater-sage-grouse
#9
Daniel Gibson, Erik J Blomberg, Michael T Atamian, James S Sedinger
Weather is a source of environmental variation that can affect population vital rates. However, the influence of weather on individual fitness is spatially heterogeneous and can be driven by other environmental factors, such as habitat composition. Therefore, individuals can experience reduced fitness (e.g., decreased reproductive success) during poor environmental conditions through poor decisions regarding habitat selection. This requires, however, that habitat selection is adaptive and that the organism can correctly interpret the environmental cues to modify habitat use...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28051945/sex-specific-effects-of-high-yolk-androgen-levels-on-constitutive-and-cell-mediated-immune-responses-in-nestlings-of-an-altricial-passerine
#10
Jaime Muriel, Lorenzo Pérez-Rodríguez, Manuel E Ortiz-Santaliestra, Marisa Puerta, Diego Gil
Avian embryos are exposed to yolk androgens that are incorporated into the egg by the ovulating female. These steroids can affect several aspects of embryo development, often resulting in increases in overall size or the speed of growth of different traits. However, several studies suggest that they also entail immune costs to the offspring. In this study, we explored whether variation in yolk androgen concentration affected several measures of the constitutive and cell-mediated immune axes in the spotless starling (Sturnus unicolor)...
January 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28051942/parental-care-in-a-stressful-world-experimentally-elevated-cortisol-and-brood-size-manipulation-influence-nest-success-probability-and-nest-tending-behavior-in-a-wild-teleost-fish
#11
Dirk A Algera, Lee F G Gutowsky, Aaron J Zolderdo, Steven J Cooke
Parental care is an advantageous reproductive behavior, as the fitness of the caregiver is increased through improving the chances of its offspring's survival. Parental care occurs in a variety of teleost fishes. The body size of parental fish and the size of their brood can affect nest abandonment decisions, where compared with smaller fish with smaller broods, larger fish with larger broods typically invest more energy into reproductive events because they have less future reproductive potential. Although essential for basal metabolism and body maintenance functions, when glucocorticoid hormones (e...
January 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28051939/ecologically-relevant-cooling-early-in-life-alters-prefledging-adrenocortical-response-in-free-living-songbirds
#12
Sharon E Lynn, Michael D Kern
In vertebrates, exposure to stressful stimuli early in development may alter the activity of the hypothalamo-pituitary-adrenal (HPA) axis, with the potential for fitness consequences later in life. For altricial species, whose young rely on their parents for food, warmth, and protection from predators, adult behavior can modify the impact of some stressors on their offspring after birth or hatching. We have shown that single bouts of cooling that normally occur when brooding females leave the nest elevate corticosterone secretion in very young free-living eastern bluebird (Sialia sialis) chicks...
January 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28045085/expression-of-acetylcholinesterase-1-is-associated-with-brood-rearing-status-in-the-honey-bee-apis-mellifera
#13
Young Ho Kim, Ju Hyeon Kim, Kyungmun Kim, Si Hyeock Lee
Acetylcholinesterase 1 (AmAChE1) of the honey bee, Apis mellifera, has been suggested to have non-neuronal functions. A systematic expression profiling of AmAChE1 over a year-long cycle on a monthly basis revealed that AmAChE1 was predominantly expressed in both head and abdomen during the winter months and was moderately expressed during the rainy summer months. Interestingly, AmAChE1 expression was inhibited when bees were stimulated for brood rearing by placing overwintering beehives in strawberry greenhouses with a pollen diet, whereas it resumed when the beehives were moved back to the cold field, thereby suppressing brood rearing...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28043787/-clusters-of-fusarium-solani-infection-in-juvenile-captive-born-caretta-caretta-sea-turtles
#14
M Garcia-Hartmann, C Hennequin, S Catteau, C Béatini, V Blanc
Various yeasts and filamentous fungi are described as the cause of infection in sea turtles. Among them, Fusarium solani is responsible both for superficial and invasive infection in weakened adults (capture, stranding), and wild nest contamination, causing massive losses during hatching. We illustrate the pathogenicity of this fungus in sea turtles, through our experience with the species Caretta caretta (loggerhead turtle) and its reproduction, which was obtained for the first time in 2010 at the marine park Marineland, Antibes and renewed in 2011 and 2013...
December 30, 2016: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28043021/toxic-effects-of-diclofenac-on-life-history-parameters-and-the-expression-of-detoxification-related-genes-in-daphnia-magna
#15
Yang Liu, Lan Wang, Benben Pan, Chao Wang, Shuang Bao, Xiangping Nie
Diclofenac (DCF), as a widely used drug, has been detected in various environmental media such as municipal wastewater effluent. However, there is little information on the effects of DCF on freshwater invertebrates potentially exposing to its residues in surface water. In the present study, we investigated the toxic effects of DCF on the physiological parameters (e.g., survival, growth rate, and reproduction) of a crustacean, Daphnia magna, via a 21-d chronic toxicity test, and we also evaluated the effects of DCF on the expression of the genes related to the detoxification metabolism, growth, development and reproduction (e...
December 26, 2016: Aquatic Toxicology
https://www.readbyqxmd.com/read/28042198/age-worksite-location-neuromodulators-and-task-performance-in-the-ant-pheidole-dentata
#16
Ysabel Milton Giraldo, Adina Rusakov, Alexandria Diloreto, Adrianna Kordek, James F A Traniello
Social insect workers modify task performance according to age-related schedules of behavioral development, and/or changing colony labor requirements based on flexible responses that may be independent of age. Using known-age minor workers of the ant Pheidole dentata throughout 68% of their 140-day laboratory lifespan, we asked whether workers found inside or outside the nest differed in task performance and if behaviors were correlated with and/or causally linked to changes in brain serotonin (5HT) and dopamine (DA)...
September 2016: Behavioral Ecology and Sociobiology
https://www.readbyqxmd.com/read/28035457/ant-lepidopteran-associations-along-african-forest-edges
#17
Alain Dejean, Frédéric Azémar, Michel Libert, Arthur Compin, Bruno Hérault, Jérôme Orivel, Thierry Bouyer, Bruno Corbara
Working along forest edges, we aimed to determine how some caterpillars can co-exist with territorially dominant arboreal ants (TDAAs) in tropical Africa. We recorded caterpillars from 22 lepidopteran species living in the presence of five TDAA species. Among the defoliator and/or nectarivorous caterpillars that live on tree foliage, the Pyralidae and Nymphalidae use their silk to protect themselves from ant attacks. The Notodontidae and lycaenid Polyommatinae and Theclinae live in direct contact with ants; the Theclinae even reward ants with abundant secretions from their Newcomer gland...
February 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28032102/evaluation-of-oxalic-acid-treatments-against-the-mite-varroa-destructor-and-secondary-effects-on-honey-bees-apis-mellifera
#18
Noureddine Adjlane, El-Ounass Tarek, Nizar Haddad
BACKGROUND: The Varroa destructor varroasis is a very serious parasite of honeybee Apis mellifera. The objective of this study was to evaluate the effectiveness of Varroa treatment using organic acid (oxalic acid) in Algeria identifying its side effects on bee colonies. METHODS: Treatment was conducted in one apiary consisting 30 colonies kept in Langstroth hives kind. Oxalic acid dripped directly on bees 5ml of this solution of oxalic acid per lane occupied by a syringe...
December 2016: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/28030617/sublethal-effects-of-imidacloprid-on-honey-bee-colony-growth-and-activity-at-three-sites-in-the-u-s
#19
William G Meikle, John J Adamczyk, Milagra Weiss, Ales Gregorc, Don R Johnson, Scott D Stewart, Jon Zawislak, Mark J Carroll, Gus M Lorenz
Imidacloprid is a neonicotinoid pesticide heavily used by the agricultural industry and shown to have negative impacts on honey bees above certain concentrations. We evaluated the effects of different imidacloprid concentrations in sugar syrup using cage and field studies, and across different environments. Honey bee colonies fed sublethal concentrations of imidicloprid (0, 5, 20 and 100 ppb) over 6 weeks in field trials at a desert site (Arizona), a site near intensive agriculture (Arkansas) and a site with little nearby agriculture but abundant natural forage (Mississippi) were monitored with respect to colony metrics, such as adult bee and brood population sizes, as well as pesticide residues...
2016: PloS One
https://www.readbyqxmd.com/read/28028377/adult-helpers-increase-the-recruitment-of-closely-related-offspring-in-the-cooperatively-breeding-rifleman
#20
Stephanie A J Preston, James V Briskie, Ben J Hatchwell
Indirect fitness benefits gained through kin-selected helping are widely invoked to explain the evolution of cooperative breeding behavior in birds. However, the impact of helpers on productivity of helped broods can be difficult to determine if the effects are confounded by territory quality or if the benefit of helpers is apparent only in the long term. In riflemen Acanthisitta chloris, helping and group membership are effectively decoupled as adult helpers are individuals that have dispersed from their natal territory and live independently from breeders in "kin neighborhoods...
November 2016: Behavioral Ecology: Official Journal of the International Society for Behavioral Ecology
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