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https://www.readbyqxmd.com/read/28900807/ecotoxicological-impact-assessment-of-the-brine-discharges-from-a-desalination-plant-in-the-marine-waters-of-the-algerian-west-coast-using-a-multibiomarker-approach-in-a-limpet-patella-rustica
#1
Meriem Benaissa, Omar Rouane-Hacene, Zitouni Boutiba, Marielle E Guibbolini-Sabatier, Christine Risso-De Faverney
The aim of our study is to evaluate the impact of Bousfer desalination plant brine discharges on the Algerian west coast, on a natural population of the marine gastropod mollusc Patella rustica. The effects of a chronic exposure to such discharges are complex to understand due to the combined effects of environmental physico-chemical parameters (e.g., high salinity) and different pollutants that can modulate the physiological responses of this species to stress. In this context, we assessed the biological effects in a marine species P...
September 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28862802/cytological-and-cytomorphometric-characteristics-of-buccal-mucosa-cells-from-smokeless-tobacco-users
#2
Adile Ferda Dagli, Nurhan Sahin, Zehra Bozdag, Ozlem Ucer, Ayse Nur Akatli, Gokhan Artas, İbrahim Sahin, Meltem Yardim, Semih Dalkilic, Ramazan Fazil Akkoc, Sercan Simsek, Suleyman Aydin
BACKGROUND: Use of smokeless tobacco (ST) is increasing in many communities. We investigated whether ST alters the cytological and cytomorphometric features of buccal mucosa cells. METHODS: Twenty male participants who had used Nicotiana rustica Linn.-containing ST (Maras powder) for at least 10 years, and 20 healthy male controls who did not use ST, were included in this study. After rinsing the mouth with water, samples were taken using a toothbrush from the buccal mucosa of subjects in both groups...
September 1, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28777875/genomic-variation-across-two-barn-swallow-hybrid-zones-reveals-traits-associated-with-divergence-in-sympatry-and-allopatry
#3
Elizabeth S C Scordato, Matthew R Wilkins, Georgy Semenov, Alexander S Rubtsov, Nolan C Kane, Rebecca J Safran
Hybrid zones are geographic regions where isolating barriers between divergent populations are challenged by admixture. Identifying factors that facilitate or inhibit hybridization in sympatry can illuminate the processes that maintain those reproductive barriers. We analyzed patterns of hybridization and phenotypic variation across two newly-discovered hybrid zones between three subspecies of barn swallow (Hirundo rustica). These subspecies differ in ventral coloration and wing length, traits that are targets of sexual and natural selection, respectively, and are associated with genome-wide differentiation in allopatry...
August 4, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28770683/plasma-testosterone-levels-increase-with-expression-of-male-ornaments-during-mating-but-not-incubation-in-japanese-barn-swallows
#4
Masaru Hasegawa, Emi Arai, Megumi Sato, Hidetsugu Sakai
Recent experimental studies involving the manipulation of sexual traits have demonstrated that sexual trait expression feeds back to testosterone levels, perhaps via social interactions, reinforcing the linkage between sexual trait expression and testosterone levels during the mating period. However, information on this reinforcement under the natural variation of sexual traits remains limited. Using Japanese barn swallows, Hirundo rustica gutturalis, in which extra-pair paternity is quite rare (< 3%), we studied the relationship between plasma testosterone level and a male sexual trait, throat patch size, during the mating and incubation periods...
August 2017: Zoological Science
https://www.readbyqxmd.com/read/28741127/wing-morphology-winter-ecology-and-fecundity-selection-evidence-for-sex-dependence-in-barn-swallows-hirundo-rustica
#5
Nicola Saino, Roberto Ambrosini, Manuela Caprioli, Felix Liechti, Andrea Romano, Diego Rubolini, Chiara Scandolara
Variation in wing morphology results from the combination of diverse selection pressures. Wing feather morphology within species varies with sex and ontogenetic effects, and also with ecological factors. Yet, the direction of causation for the wing morphology-ecology association remains to be elucidated. Under the 'ecology-dependence' hypothesis, wing morphology covaries with ecological conditions, because the latter affect feather molt. Alternatively, the 'habitat choice' hypothesis posits that individuals with different wing morphology choose different habitats because of the habitat-dependent advantages of a specific wing morphology...
July 25, 2017: Oecologia
https://www.readbyqxmd.com/read/28722759/lifetime-reproductive-success-selection-on-lifespan-and-multiple-sexual-ornaments-in-male-european-barn-swallows
#6
Alessandra Costanzo, Roberto Ambrosini, Manuela Caprioli, Emanuele Gatti, Marco Parolini, Luca Canova, Diego Rubolini, Andrea Romano, Luca Gianfranceschi, Nicola Saino
Natural and sexual selection arise when individual fitness varies according to focal traits. Extra-pair paternities (EPPs) can affect the intensity of selection by influencing variance in fitness among individuals. Studies of selection require that individual fitness is estimated using proxies of lifetime reproductive success (LRS). However, estimating LRS is difficult in large, open populations where EPPs cause reallocation of biological paternity. Here, we used extensive field sampling to estimate LRS in a population of barn swallows (Hirundo rustica) to estimate selection on lifespan and ornamental traits of males...
July 19, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28705986/draft-genome-sequence-of-multidrug-resistant-cellulosimicrobium-sp-strain-kwt-b-isolated-from-feces-of-hirundo-rustica
#7
Takehiko Kenzaka, Yuina Ishimoto, Katsuji Tani
Migratory birds have been postulated as potential spreaders of antibiotic resistance. Multidrug-resistant Cellulosimicrobium sp. strain KWT-B was isolated from the feces of Hirundo rustica A draft genome sequence indicated that the strain harbors multidrug-resistant transporters, multidrug efflux pumps, a vancomycin-resistant protein, and metallo-beta-lactamases.
July 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28680656/the-weierstrassian-movement-patterns-of-snails
#8
Andy Reynolds, Giacomo Santini, Guido Chelazzi, Stefano Focardi
Weierstrassian Lévy walks are the archetypical form of random walk that do not satisfy the central limit theorem and are instead characterized by scale invariance. They were originally regarded as a mathematical abstraction but subsequent theoretical studies showed that they can, in principle, at least, be generated by chaos. Recently, Weierstrassian Lévy walks have been found to provide accurate representations of the movement patterns of mussels (Mytilus edulis) and mud snails (Hydrobia ulvae) recorded in the laboratory under controlled conditions...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28662048/capacity-of-blood-plasma-is-higher-in-birds-breeding-in-radioactively-contaminated-areas
#9
Magdalena Ruiz-Rodríguez, Anders P Møller, Timothy A Mousseau, Juan J Soler
BACKGROUND: Environmental pollution in general, and radioactive contamination in particular, may deeply affect host-parasite relationships and their consequences for the evolution of organisms. The nuclear accident that occurred more than 30 years ago in Chernobyl resulted in significant changes in diversity and richness of microbial communities that could influence characteristics of animal-bacteria interactions, including host immune responses and competitive interference by bacteria...
2017: PloS One
https://www.readbyqxmd.com/read/28413103/do-larval-types-affect-genetic-connectivity-at-sea-testing-hypothesis-in-two-sibling-marine-gastropods-with-contrasting-larval-development
#10
Maria Vittoria Modica, Valeria Russini, Giulia Fassio, Marco Oliverio
In marine environments, connectivity among populations of benthic invertebrates is provided primarily by dispersion of larvae, with the duration of pelagic larval phase (PLD) supposed to represent one of the major factor affecting connectivity. In marine gastropods, PLD is linked to specific larval development types, which may be entirely intracapsular (thus lacking a pelagic dispersal), or include a short pelagic lecithotrophic or a long planktotrophic phase. In the present study, we investigated two sibling species of the cosmopolitan neogastropod genus Columbella (commonly known as dove shells): Columbella adansoni Menke, 1853, from the Macaronesian Atlantic archipelagos, with planktotrophic development, and Columbella rustica Linnaeus, 1758, from the Mediterranean Sea, with intracapsular development...
June 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28361883/migration-phenology-and-breeding-success-are-predicted-by-methylation-of-a-photoperiodic-gene-in-the-barn-swallow
#11
Nicola Saino, Roberto Ambrosini, Benedetta Albetti, Manuela Caprioli, Barbara De Giorgio, Emanuele Gatti, Felix Liechti, Marco Parolini, Andrea Romano, Maria Romano, Chiara Scandolara, Luca Gianfranceschi, Valentina Bollati, Diego Rubolini
Individuals often considerably differ in the timing of their life-cycle events, with major consequences for individual fitness, and, ultimately, for population dynamics. Phenological variation can arise from genetic effects but also from epigenetic modifications in DNA expression and translation. Here, we tested if CpG methylation at the poly-Q and 5'-UTR loci of the photoperiodic Clock gene predicted migration and breeding phenology of long-distance migratory barn swallows (Hirundo rustica) that were tracked year-round using light-level geolocators...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28318974/long-distance-range-expansion-and-rapid-adjustment-of-migration-in-a-newly-established-population-of-barn-swallows-breeding-in-argentina
#12
David W Winkler, Facundo A Gandoy, Juan I Areta, Marshall J Iliff, Eldar Rakhimberdiev, Kevin J Kardynal, Keith A Hobson
When bird populations spread, long-distance pioneering populations are often backfilled by a more slowly advancing front [1-3]. The Barn Swallow Hirundo rustica, a globally distributed passerine [4, 5], expanded its breeding range an exceptional 7,000 km when it began breeding 35 years ago in its regular wintering range in Argentina [6], subsequently expanding over 500 km from its starting point [7-11]. Trans-hemispheric breeding attempts have occurred previously in related swallows [12-14], but only this colonization has lasted...
April 3, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28220109/temporal-stability-and-the-effect-of-transgenerational-transfer-on-fecal-microbiota-structure-in-a-long-distance-migratory-bird
#13
Jakub Kreisinger, Lucie Kropáčková, Adéla Petrželková, Marie Adámková, Oldřich Tomášek, Jean-François Martin, Romana Michálková, Tomáš Albrecht
Animal bodies are inhabited by a taxonomically and functionally diverse community of symbiotic and commensal microorganisms. From an ecological and evolutionary perspective, inter-individual variation in host-associated microbiota contributes to physiological and immune system variation. As such, host-associated microbiota may be considered an integral part of the host's phenotype, serving as a substrate for natural selection. This assumes that host-associated microbiota exhibits high temporal stability, however, and that its composition is shaped by trans-generational transfer or heritable host-associated microbiota modulators encoded by the host genome...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28137535/an-experimental-test-of-the-effect-of-brood-size-on-glucocorticoid-responses-parental-investment-and-offspring-phenotype
#14
Maren N Vitousek, Brittany R Jenkins, Joanna K Hubbard, Sara A Kaiser, Rebecca J Safran
Because elevated glucocorticoid levels can impair reproduction, populations or species that engage in particularly valuable reproductive attempts may down-regulate the glucocorticoid stress response during reproduction (the brood value hypothesis). It is not clear, however, whether individuals rapidly modulate glucocorticoid responses based on shifting cues about the likelihood of reproductive success. By manipulating brood size to create broods that differed in potential value, we tested whether female barn swallows (Hirundo rustica) rapidly modulated the glucocorticoid stress response to promote investment in high-value broods, and whether nestling phenotype was influenced by treatment...
January 28, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28116647/dna-barcoding-of-an-assembly-of-montane-andean-butterflies-satyrinae-geographical-scale-and-identification-performance
#15
M A Marín, I C Cadavid, L Valdés, C F Álvarez, S I Uribe, R Vila, T W Pyrcz
DNA barcoding is a technique used primarily for the documentation and identification of biological diversity based on mitochondrial DNA sequences. Butterflies have received particular attention in DNA barcoding studies, although varied performance may be obtained due to different scales of geographic sampling and speciation processes in various groups. The montane Andean Satyrinae constitutes a challenging study group for taxonomy. The group displays high richness, with more of 550 species, and remarkable morphological similarity among taxa, which renders their identification difficult...
January 23, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28000219/sex-dependent-carry-over-effects-on-timing-of-reproduction-and-fecundity-of-a-migratory-bird
#16
Nicola Saino, Roberto Ambrosini, Manuela Caprioli, Andrea Romano, Maria Romano, Diego Rubolini, Chiara Scandolara, Felix Liechti
Life of many organisms flows as a sequence of annual cycles. Timing of cyclical events is shaped by natural selection also via the domino effects that any life history stage has on the stages that follow. Such 'carry-over effects' have major consequences for evolutionary, ecological and demographic processes, but the causes that generate their individual-level variation, including the effect of sex, are poorly understood. We used light-level geolocators to study carry-over effects on the year-round life cycle of the long-distance migratory barn swallow (Hirundo rustica) and sex-dependent variation in their strength...
December 21, 2016: Journal of Animal Ecology
https://www.readbyqxmd.com/read/27931126/%C3%AE-tocopherol-%C3%AE-carotene-lutein-squalene-and-secoiridoids-in-seven-monocultivar-italian-extra-virgin-olive-oils
#17
Roberto Ambra, Fausta Natella, Sabrina Lucchetti, Valentina Forte, Gianni Pastore
Fatty acids and bioactive lipophilic and hydrophilic compounds (tocopherols, β-carotene, lutein, squalene, total polyphenols and secoiridoids) in monocultivar Italian extra-virgin olive oil (EVOO) samples produced from the Leccino cultivar and six other yet uncharacterised cultivars (Rustica, Carpinetana, Dritta, Gentile di Chieti and Intosso) were analysed, also taking into account the effect of the type of decanter used for the oil extraction. Significant differences among cultivars were found for α-tocopherol and squalene, but not for carotenoids...
August 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/27829247/occurrence-and-origin-of-supernumerary-chromosomes-in-partamona-hymenoptera-apidae-meliponini
#18
Diana P Machado, Elder A Miranda, Mariana C Dessi, Camila P Sabadini, Marco A Del Lama
Samples from 861 colonies of 12 Partamona species from 125 Brazilian localities were analysed for a SCAR marker specific to the B chromosomes of P. helleri. We identified the SCAR marker in 6 of the 12 species analysed, including 2 (P. gregaria and P. chapadicola) from the pearsoni clade. This is the first report on the presence of this marker in Partamona species that are not included in the cupira clade, which indicates that the B chromosomes probably are more widespread in this genus than previously thought...
2016: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/27801818/comparison-of-reflectance-measurements-acquired-with-a-contact-probe-and-an-integration-sphere-implications-for-the-spectral-properties-of-vegetation-at-a-leaf-level
#19
Markéta Potůčková, Lucie Červená, Lucie Kupková, Zuzana Lhotáková, Petr Lukeš, Jan Hanuš, Jan Novotný, Jana Albrechtová
Laboratory spectroscopy in visible and infrared regions is an important tool for studies dealing with plant ecophysiology and early recognition of plant stress due to changing environmental conditions. Leaf optical properties are typically acquired with a spectroradiometer coupled with an integration sphere (IS) in a laboratory or with a contact probe (CP), which has the advantage of operating flexibility and the provision of repetitive in-situ reflectance measurements. Experiments comparing reflectance spectra measured with different devices and device settings are rarely reported in literature...
October 28, 2016: Sensors
https://www.readbyqxmd.com/read/27723778/phylogeography-of-partamona-rustica-hymenoptera-apidae-an-endemic-stingless-bee-from-the-neotropical-dry-forest-diagonal
#20
Elder Assis Miranda, Henrique Batalha-Filho, Carlos Congrains, Antônio Freire Carvalho, Kátia Maria Ferreira, Marco Antonio Del Lama
The South America encompasses the highest levels of biodiversity found anywhere in the world and its rich biota is distributed among many different biogeographical regions. However, many regions of South America are still poorly studied, including its xeric environments, such as the threatened Caatinga and Cerrado phytogeographical domains. In particular, the effects of Quaternary climatic events on the demography of endemic species from xeric habitats are poorly understood. The present study uses an integrative approach to reconstruct the evolutionary history of Partamona rustica, an endemic stingless bee from dry forest diagonal in Brazil, in a spatial-temporal framework...
2016: PloS One
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