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https://www.readbyqxmd.com/read/29352679/inter-sexual-habitat-and-isotopic-niche-segregation-of-the-endangered-monteiro-s-storm-petrel-during-breeding
#1
V H Paiva, J A Ramos, C Nava, V Neves, J Bried, M Magalhães
At-sea distribution and trophic ecology of small seabird species (i.e.<100 g) is far less known when compared to their larger relatives. We studied the habitat use (spatial ecology) and isotopic niches (trophic ecology) of the endangered Monteiro's storm-petrel Hydrobates monteiroi during the incubation and chick-rearing periods of 2013. There was a sexual foraging segregation of Monteiro's storm-petrels during the breeding period (tracking data) but also during the non-breeding stage (stable isotope analysis)...
December 30, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29352501/predictors-of-beef-calf-temperament-at-weaning-and-its-impact-on-temperament-at-breeding-and-reproductive-performance
#2
V R Kasimanickam, R L Abdel Aziz, H M Williams, R K Kasimanickam
Two experiments were conducted to determine (i) factors influencing calf temperament at weaning, (ii) association between heifer-calf temperament at weaning and temperament at breeding and (iii) effect of heifer-calf temperament on pregnancy rate per artificial insemination (P/AI). In experiment 1, beef cows and their calves (n = 285) from three farms were used. Sire docility estimated progeny difference (EPD) score, birth type (normal or assisted), calf gender, calf behaviour (during 1st 4 weeks) and calf health status (until weaning) were recorded...
January 19, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29352495/ultrasonographic-based-predictive-factors-influencing-successful-return-to-racing-after-superficial-digital-flexor-tendon-injuries-in-flat-racehorses-a-retrospective-cohort-study-in-469-thoroughbred-racehorses-in-hong-kong
#3
R Alzola, C Easter, C M Riggs, D S Gardner, S L Freeman
BACKGROUND: Superficial digital flexor tendon (SDFT) injury is an important health and welfare concern in racehorses. It is generally diagnosed with ultrasonography, predictive ultrasonographic features have not been reported. OBJECTIVES: To determine ultrasonographic features of forelimb SDFT injury at initial presentation in Thoroughbred racehorses, that could predict a successful return to racing (completing ≥5 races). STUDY DESIGN: Retrospective cohort study...
January 20, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29352457/geographic-vocal-variation-and-perceptual-discrimination-abilities-in-male-australian-sea-lions
#4
Heidi Ahonen, Robert G Harcourt, Adam J Stow, Isabelle Charrier
Vocal characteristics can vary among and within populations. In species with geographic variation in the structure of vocalizations, individuals may have the ability to discriminate between calls from local and non-local individuals. The ability to distinguish differences in acoustic signals is likely to have a significant influence on the outcome of social interactions between individuals, including potentially mate selection and breeding success. Pinnipeds (seals, fur seals, sea lions and walruses) are highly vocal yet the Australian sea lion (Neophoca cinerea) is the only eared seal known to show geographic vocal variation in male barks...
January 19, 2018: Animal Cognition
https://www.readbyqxmd.com/read/29352324/efficient-genome-wide-genotyping-strategies-and-data-integration-in-crop-plants
#5
REVIEW
Davoud Torkamaneh, Brian Boyle, François Belzile
Next-generation sequencing (NGS) has revolutionized plant and animal research by providing powerful genotyping methods. This review describes and discusses the advantages, challenges and, most importantly, solutions to facilitate data processing, the handling of missing data, and cross-platform data integration. Next-generation sequencing technologies provide powerful and flexible genotyping methods to plant breeders and researchers. These methods offer a wide range of applications from genome-wide analysis to routine screening with a high level of accuracy and reproducibility...
January 19, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29352240/transcriptome-analysis-in-spleen-reveals-differential-regulation-of-response-to-newcastle-disease-virus-in-two-chicken-lines
#6
Jibin Zhang, Michael G Kaiser, Melissa S Deist, Rodrigo A Gallardo, David A Bunn, Terra R Kelly, Jack C M Dekkers, Huaijun Zhou, Susan J Lamont
Enhancing genetic resistance of chickens to Newcastle Disease Virus (NDV) provides a promising way to improve poultry health, and to alleviate poverty and food insecurity in developing countries. In this study, two inbred chicken lines with different responses to NDV, Fayoumi and Leghorn, were challenged with LaSota NDV strain at 21 days of age. Through transcriptome analysis, gene expression in spleen at 2 and 6 days post-inoculation was compared between NDV-infected and control groups, as well as between chicken lines...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352136/gphenovision-a-ground-mobile-system-with-multi-modal-imaging-for-field-based-high-throughput-phenotyping-of-cotton
#7
Yu Jiang, Changying Li, Jon S Robertson, Shangpeng Sun, Rui Xu, Andrew H Paterson
Imaging sensors can extend phenotyping capability, but they require a system to handle high-volume data. The overall goal of this study was to develop and evaluate a field-based high throughput phenotyping system accommodating high-resolution imagers. The system consisted of a high-clearance tractor and sensing and electrical systems. The sensing system was based on a distributed structure, integrating environmental sensors, real-time kinematic GPS, and multiple imaging sensors including RGB-D, thermal, and hyperspectral cameras...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352085/the-expression-of-bacteriocin-production-and-self-resistance-in-lactobacillus-brevis-174a-is-mediated-by-two-regulatory-proteins
#8
Masafumi Noda, Rumi Miyauchi, Narandalai Danshiitsoodol, Yasuyuki Matoba, Takanori Kumagai, Masanori Sugiyama
We have previously shown that a lactic acid bacterium Lactobacillus (Lb.) brevis 174A isolated from a Citrus iyo fruit produces bacteriocin designated brevicin 174A, which is comprised of two antibacterial polypeptides (designated brevicin 174A-β and 174A-γ). We have also found a gene cluster, composed of eight open reading frames (ORFs), that contains genes for the biosynthesis of brevicin 174A, self-resistance to its own bacteriocin, and two transcriptional regulatory proteins.Some lactic acid bacterial strains have a system to start the production of bacteriocin at an adequate stage of the growth...
January 19, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29351945/concurrent-endocrine-neoplasias-in-dogs-and-cats-a-retrospective-study-2004-2014
#9
Laura Beatrice, Felicitas Schär Boretti, Nadja S Sieber-Ruckstuhl, Claudia Mueller, Claudia Kümmerle-Fraune, Monika Hilbe, Paula Grest, Claudia E Reusch
Multiple endocrine neoplasia (MEN) is a well-known syndrome in human medicine, whereas only a few cases of concurrent endocrine neoplasias have been reported in dogs and cats. The aim of this study was to evaluate the prevalence of concurrent endocrine neoplasias in dogs and cats at our clinic, identify possible breed and sex predispositions and investigate similarities with MEN syndromes in humans. Postmortem reports of 951 dogs and 1155 cats that died or were euthanased at the Clinic for Small Animal Internal Medicine, University of Zurich, between 2004 and 2014 were reviewed, and animals with at least two concurrent endocrine neoplasias and/or hyperplasias were included...
January 19, 2018: Veterinary Record
https://www.readbyqxmd.com/read/29351768/overweight-in-adult-cats-a-cross-sectional-study
#10
Malin Öhlund, Malin Palmgren, Bodil Ström Holst
BACKGROUND: Overweight in cats is a major risk factor for diabetes mellitus and has also been associated with other disorders. Overweight and obesity are believed to be increasing problems in cats, as is currently seen in people, with important health consequences. The objectives of the present study were to determine the prevalence of overweight in cats from two different cohorts in a cross-sectional study design and to assess associations between overweight and diagnoses, and between overweight and demographic and environmental factors...
January 19, 2018: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29351020/a-dynamic-state-model-of-migratory-behavior-and-physiology-to-assess-the-consequences-of-environmental-variation-and-anthropogenic-disturbance-on-marine-vertebrates
#11
Enrico Pirotta, Marc Mangel, Daniel P Costa, Bruce Mate, Jeremy A Goldbogen, Daniel M Palacios, Luis A Hückstädt, Elizabeth A McHuron, Lisa Schwarz, Leslie New
Integrating behavior and physiology is critical to formulating new hypotheses on the evolution of animal life-history strategies. Migratory capital breeders acquire most of the energy they need to sustain migration, gestation, and lactation before parturition. Therefore, when predicting the impact of environmental variation on such species, a mechanistic understanding of the physiology of their migratory behavior is required. Using baleen whales as a model system, we developed a dynamic state variable model that captures the interplay among behavioral decisions, energy, reproductive needs, and the environment...
February 2018: American Naturalist
https://www.readbyqxmd.com/read/29351012/extreme-climate-induced-life-history-plasticity-in-an-amphibian
#12
François S Becker, Krystal A Tolley, G John Measey, Res Altwegg
Age-specific survival and reproduction are closely linked to fitness and therefore subject to strong selection that typically limits their variability within species. Furthermore, adult survival rate in vertebrate populations is typically less variable over time than other life-history traits, such as fecundity or recruitment. Hence, adult survival is often conserved within a population over time, compared to the variation in survival found across taxa. In stark contrast to this general pattern, we report evidence of extreme short-term variation of adult survival in Rose's mountain toadlet (Capensibufo rosei), which is apparently climate induced...
February 2018: American Naturalist
https://www.readbyqxmd.com/read/29351011/a-migratory-divide-in-the-painted-bunting-passerina-ciris
#13
C J Battey, Ethan B Linck, Kevin L Epperly, Cooper French, David L Slager, Paul W Sykes, John Klicka
In the painted bunting (Passerina ciris), a North American songbird, populations on the Atlantic coast and interior southern United States are known to be allopatric during the breeding season, but efforts to map connectivity with wintering ranges have been largely inconclusive. Using genomic and morphological data from museum specimens and banded birds, we found evidence of three genetically differentiated painted bunting populations with distinct wintering ranges and molt-migration phenologies. In addition to confirming that the Atlantic coast population remains allopatric throughout the annual cycle, we identified an unexpected migratory divide within the interior breeding range...
February 2018: American Naturalist
https://www.readbyqxmd.com/read/29350925/exposure-to-dietary-methyl-mercury-solely-during-embryonic-and-juvenile-development-halves-subsequent-reproductive-success-in-adult-zebra-finches
#14
Ohad J Paris, John P Swaddle, Daniel A Cristol
Long-term exposure to methyl-mercury has deleterious effects on avian reproduction. However, little is known about whether exposure to mercury solely during embryonic and juvenile development can have long-lasting effects on subsequent reproductive performance as adults. Birds that hatch on contaminated sites, but disperse elsewhere, will be exposed only during development. Hence, it is important to understand the reproductive consequences of avian exposure to methyl-mercury during early life. Accordingly, in this experiment, domesticated zebra finches (Taeniopygia guttata) were exposed to dietary methyl-mercury (1...
January 19, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29350443/cutting-reduces-variation-in-biomass-production-of-forage-crops-and-allows-low-performers-to-catch-up-a-case-study-of-trifolium-pratense-l-red-clover
#15
Denise Herbert, Klemens Ekschmitt, Volker Wissemann, Annette Becker
Regrowth of fodder plants after grazing and mowing drives the profitability of their cultivation and is therefore an important target trait for plant breeding and agricultural engineering. However, for some fodder plants little is known about their regrowth dynamics in response to grazing or mowing. We analyzed the native response of plant architecture, leaf morphology and growth performance to experimental cutting in wild Trifolium pratense L. (red clover) plants. One hundred fifty potted clover plants were established under controlled field conditions, and half of the plants were cut to 5 cm 3 months after sowing...
January 19, 2018: Plant Biology
https://www.readbyqxmd.com/read/29350412/surgical-repair-of-propagating-condylar-fractures-of-the-third-metacarpal-metatarsal-bones-with-cortical-screws-placed-in-lag-fashion-in-26-racehorses-2007-2015
#16
N Moulin, I François, N Coté, C Alford, O Cleary, M R Desjardins
BACKGROUND: Despite the recommendation of plate fixation for propagating condylar fractures of the third metacarpal (McIII) or third metatarsal bone (MtIII), lag screw fixation can be a viable surgical option. OBJECTIVES: To evaluate short-term outcome and long-term racing performance of horses that underwent lag screw fixation of long condylar fractures of the McIII/MtIII. STUDY DESIGN: Retrospective case series. METHODS: Medical records, post-surgical racing performance and outcome of 26 horses with propagating fractures of the medial and/or lateral condyle of McIII/MtIII were reviewed...
January 19, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29350284/a-positive-relationship-between-spring-temperature-and-productivity-in-20-songbird-species-in-the-boreal-zone
#17
Kalle Meller, Markus Piha, Anssi V Vähätalo, Aleksi Lehikoinen
Anthropogenic climate warming has already affected the population dynamics of numerous species and is predicted to do so also in the future. To predict the effects of climate change, it is important to know whether productivity is linked to temperature, and whether species' traits affect responses to climate change. To address these objectives, we analysed monitoring data from the Finnish constant effort site ringing scheme collected in 1987-2013 for 20 common songbird species together with climatic data. Warm spring temperature had a positive linear relationship with productivity across the community of 20 species independent of species' traits (realized thermal niche or migration behaviour), suggesting that even the warmest spring temperatures remained below the thermal optimum for reproduction, possibly due to our boreal study area being closer to the cold edge of all study species' distributions...
January 19, 2018: Oecologia
https://www.readbyqxmd.com/read/29349785/a-novel-mlph-variant-in-dogs-with-coat-colour-dilution
#18
A Bauer, A Kehl, V Jagannathan, T Leeb
Coat colour dilution may be the result of altered melanosome transport in melanocytes. Loss-of-function variants in the melanophilin gene (MLPH) cause a recessively inherited form of coat colour dilution in many mammalian and avian species including the dog. MLPH corresponds to the D locus in many domestic animals, and recessive alleles at this locus are frequently denoted with d. In this study, we investigated dilute coloured Chow Chows whose coat colour could not be explained by their genotype at the previously known MLPH:c...
January 19, 2018: Animal Genetics
https://www.readbyqxmd.com/read/29348633/contrasting-patterns-of-prehistoric-human-diet-and-subsistence-in-northernmost-europe
#19
Mirva Pääkkönen, Auli Bläuer, Bjørnar Olsen, Richard P Evershed, Henrik Asplund
Current archaeological evidence indicates the transition from hunting-fishing-gathering to agriculture in Northern Europe was a gradual process. This transition was especially complex in the prehistoric North Fennoscandian landscape where the high latitude posed a challenge to both domestic animal breeding and cereal cultivation. The conditions varied, the coastal dwellers had access to rich marine resources and enjoyed a milder climate due to the Gulf Stream, while those living in the inland Boreal forest zone faced longer and colder winters and less diversity in animal and plant resources...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348515/genetic-evidence-for-panmixia-in-a-colony-breeding-crater-lake-cichlid-fish
#20
T K Lehtonen, K R Elmer, M Lappalainen, A Meyer
Fine-scaled genetic structuring, as seen for example in many lacustrine fish, typically relates to the patterns of migration, habitat use, mating system or other ecological factors. Because the same processes can also affect the propensity of population differentiation and divergence, assessments of species from rapidly speciating clades, or with particularly interesting ecological traits, can be especially insightful. For this study, we assessed the spatial genetic relationships, including the genetic evidence for sex-biased dispersal, in a colony-breeding cichlid fish, Amphilophus astorquii, endemic to Crater Lake Apoyo in Nicaragua, using 11 polymorphic microsatellite loci (n = 123 individuals from three colonies)...
January 18, 2018: Scientific Reports
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