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Ovum (4):
Recent article
Ovum
Abstract
This study reports the cloning, expression analysis and localization of calreticulin (CRT) in the endoplasmic reticulum (ER) during late oogenesis and early embryogenesis of the insect Rhodnius prolixus. CRT was cloned and sequenced from cDNA extracted from unfertilized eggs. Real-ti...
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PMID: 20857219
PDF is available here.
PDF is available here.
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Abstract
We compared, in almond and pistachio orchards, the number of eggs per trap in traps baited with almond meal, pistachio meal, or the current standard commercial bait. When considering cumulative eggs captured over an extended period, traps baited with pistachio meal prepared from previous-crop nuts g...
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PMID: 21404860
PDF is available here.
PDF is available here.
Abstract
Field experiments were conducted in steel bins containing 13,600 kg of hard red winter wheat, Triiticum aestivum L. One bin was treated with ozone and the second bin served as a control. Stored grain insects were placed in bins for 1-, 2-, 3-, and 4-d exposure periods in sampling tubes to test ozone...
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PMID: 21404872
PDF is available here.
PDF is available here.
Abstract
Our results suggest that during structural heat treatments eggs should be used in bioassays for gauging heat treatment effectiveness, because treatments aimed at controlling eggs should be able to control all other L. serricorne life stages....
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PMID: 21404873
PDF is available here.
PDF is available here.
Abstract
Methyl bromide fumigation is widely used as a phytosanitary treatment. Mexican fruit fly, Anastrepha ludens (Loew) (Diptera: Tephritidae), is a quarantine pest of several fruit, including citrus (Citrus spp.), exported from Texas, Mexico, and Central America. Recently, live larvae have been found wit...
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PMID: 21404840
PDF is available here.
PDF is available here.
Abstract
We evaluated four hemlock species (Tsuga) under three different fertilizer regimes to assess whether fertility affected resistance to the adelgid and to determine whether it affected feeding preferences of the adelgid predators Laricobius nigrinus Fender and Sasajiscymnus tsugae (Sasaji & McClure)....
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PMID: 21404870
PDF is available here.
PDF is available here.
Abstract
Studies of lizards have shown that offspring size cannot be altered by manipulating clutch size in species with a high clutch frequency. This raises a question of whether clutch frequency has a key role in influencing the offspring size-number trade-off in lizards.
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PMID: 21305034
PDF is available here.
PDF is available here.
Abstract
The Frog Embryo Teratogenesis Assay Xenopus (FETAX) test is a development toxicity screening test. Due to the small amount of compound needed and the capability to study organogenesis in a short period of time (96 h), FETAX test constitutes an efficient development toxicity alert test when performed...
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PMID: 20972758
PDF is available here.
PDF is available here.
Abstract
Proceeding from long-term data on the numbers of eggs of cod in ichthyoplankton, the total annual production of cod eggs at four main spawning grounds of the Baltic Sea was calculated. It was shown that the long-term fluctuations of cod egg production were positively related to the dynamics of the vo...
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PMID: 21786653
PDF is available here.
PDF is available here.
Abstract
A new protocol for producing polyclonal antibody against hepatitis A virus (HAV) is described. Twenty hens were immunized three times with a commercial HAV vaccine and HAV from a cell culture with three types of adjuvants: CpG oligodeoxynucleotides (CpG-ODN), incomplete Freund's adju...
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PMID: 20971134
PDF is available here.
PDF is available here.
Abstract
Abstract
An analysis of the actual WHO recommendations to develop standards for the safe reuse of wastewater, excreta or sludge in agriculture using a quantitative microbial risk assessment (QMRA) is presented. The proposed values are defined using a risk-based model for Ascaris lumbricoides infection to asse...
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PMID: 21508556
PDF is available here.
PDF is available here.
Abstract
Abstract
We study the vertical and horizontal distribution of cod (Gadus morhua) eggs in relation to small-scale circulation and water column hydrography in a coastal location of southern Norway. Previous studies conducted in this region have shown that cod populations inhabiting fjord locations, which are o...
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PMID: 21058552
PDF is available here.
PDF is available here.
Abstract
Three gravid, female, wild Florida cooter turtles (Pseudemys floridana floridana) were evaluated and treated by the North Carolina State University College of Veterinary Medicine Turtle Rescue Team as a result of traumatic injuries or infection. As part of medical management, oviposition was induced...
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PMID: 20945650
PDF is available here.
PDF is available here.
Aquatic Toxicology (99)3 2010
Abstract
We hypothesized that PPMEs are affecting the brain resulting in decreased reproductive performance. Our goal was to use gene expression profiling to test the hypothesis that PPMEs are having an effect on neural systems in the fathead minnow (FHM; Pimephales promelas) in vivo. Sexually mature male an...
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PMID: 20561691
PDF is available here.
PDF is available here.
Parasitology (137)10 2010
Abstract
Glycogen synthase kinase-3 (GSK-3) is classically described as a key enzyme involved in glycogen metabolism in mammals. It has been shown to be highly conserved among several organisms, mainly in the catalytic domain region. This enzyme has already been described in Rhipicephalus (Boophilus) micropl...
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PMID: 20500916
PDF is available here.
PDF is available here.
Abstract
We propose that following absorption, vicilins accumulate in the fat body, where they are partially degraded. These peptides are retained throughout the development of the insects and eventually are sequestered by the eggs. It is possible that accumulation in the eggs is a defensive strategy against...
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PMID: 20230826
PDF is available here.
PDF is available here.
Abstract
We isolated a cDNA for Hsp70a and examined the expression of Hsp70a mRNA in B. mori diapause and nondiapause eggs by quantitative real-time PCR. Hsp70a mRNA gradually increased in diapause eggs continuously kept at 25 degrees C after oviposition to maintain diapause. When diapause eggs were exposed...
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PMID: 20371249
PDF is available here.
PDF is available here.
Abstract
In nature, ovipositing females may be subjected to multiple extrinsic and intrinsic environmental factors simultaneously. To adequately assess a species response to environmental conditions during oviposition it may therefore be necessary to consider the interaction between multiple intrinsic and ex...
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PMID: 20416319
PDF is available here.
PDF is available here.
Developmental Biology (344)2 2010
Abstract
We show here that physiological concentrations (nM) of ouabain enhance phosphorylation of EGFR on tyr-845, stimulate Ca(2+) influx and induce the acrosome reaction in sperm. These effects could be seen only in the presence of very low concentrations of EGF (0.1 ng/ml or 0.016 nM) added together with...
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PMID: 20580701
PDF is available here.
PDF is available here.
Abstract
High-pressure processing (HPP) has been proposed as an alternative quarantine method against the Mexican fruit fly Anastrepha ludens Loew (Diptera: Tephritidae), which is one of the most important pests infesting mangoes, citrus, and other fruits in Mexico and other Latin-American countries. However...
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PMID: 20367391
PDF is available here.
PDF is available here.
Abstract
We report on two siblings who carried identical pure and direct interstitial 4q22.2q32.3 duplication. Procedure investigations included complete clinical description, conventional cytogenetic analysis, fluorescence in situ hybridization (FISH), comparative genomic hybridization (CGH) array experimen...
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PMID: 20424646
PDF is available here.
PDF is available here.
Biotechnology Letters (32)8 2010
Abstract
Our results confirmed that the serine protease gene was overexpressed at the transcriptional level, and that the serine protease activities were enhanced in the transformants when compared to the parent strain. The bioassay results indicated that the relative parasitizing rates of the transformants...
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PMID: 20473777
PDF is available here.
PDF is available here.
Abstract
The biology of the immature stages and adult eclosion of Ufens principalis Owen, an important parasitoid of Homalodisca eggs in southern California, were studied. The duration of the egg, larval and pupal stages at 26.7 degrees C were 0-1, 7 and 9 days, respectively. Sacciform larvae, which develope...
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PMID: 20003573
PDF is available here.
PDF is available here.
Abstract
We investigated accumulation patterns of eight low molecular weight sugars and polyols of eggs in tropical and temperate populations of the migratory locust, which exhibits between-population variation in cold tolerance, in response to cold acclimation (5, 0 and -5 degrees C). Excluding erythritol,...
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PMID: 20416314
PDF is available here.
PDF is available here.
Abstract
I (COI) gene, clearly separated these four taxa. When Anopheles quadrimaculatus Say and Anopheles stephensi Liston were included as an outgroup, combined white and COI data resolved An. strodei and An. albertoi, whereas An. arthuri was not well resolved. The single sequence of Anopheles CP Form was...
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PMID: 20695266
PDF is available here.
PDF is available here.
Journal of Medical Microbiology (59)Pt 7 2010
Abstract
A woman was admitted to hospital with abdominal pain. A large kidney stone was recovered and a nephrectomy was performed. Histology revealed the unusual presence of multiple Enterobius vermicularis ova. However, no other parasitic element was recovered on further investigations.
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PMID: 20378722
PDF is available here.
PDF is available here.
Abstract
We investigated how the abundance of a dominant ecosystem engineer, spawning sockeye salmon (Oncorhynchus nerka), alters the emergence phenology of stream insects. In streams with high densities of salmon, peak insect emergence occurred in early July, immediately prior to salmon spawning. By contras...
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PMID: 20129980
PDF is available here.
PDF is available here.
Abstract
Vertebrate development is best studied in an intact embryo model, but a robust interface between time-lapse microscopy and in vivo embryo health and maintenance can be difficult to achieve in model systems that rely on external factors for life support. This protocol presents a system for in ovo cul...
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PMID: 20516184
PDF is available here.
PDF is available here.
Abstract
We identified this virus genotype in naturally infected field-caught Aedes aegypti mosquitoes and eggs. Results showed usefulness of virus investigations in vectors as a component of active epidemiologic surveillance....
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PMID: 20507754
PDF is available here.
PDF is available here.
Abstract
We previously reported the presence of Pgp pumps in eggshells and cuticles of the nematode Haemonchus contortus. Eggshells and cuticles are different from cell membranes, in particular they include a chitin layer. Nevertheless these structures present some common biological features with cell membra...
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PMID: 20555388
PDF is available here.
PDF is available here.
Abstract
We reviewed 14 males from Mexico, Colombia, Venezuela, Peru and Chile and the literature produced between 2003 and 2008. An analysis of the clasper complex of C. decolora male genitalia was performed by standard dissection. Scanning electron microscope (SEM) photographs of eggs structures were used...
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PMID: 20527474
PDF is available here.
PDF is available here.
Poultry Science (89)6 2010
Abstract
We concluded that a slow preincubation warming profile is beneficial for hatchability when storage time is prolonged but does not affect chick quality....
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PMID: 20460670
PDF is available here.
PDF is available here.
Phytochemistry (71)8-9 2010
Abstract
We compared the outcome of D. pini oviposition on P. sylvestris with interactions between other pine and sawfly species: Neodiprion sertifer eggs on P. sylvestris, Gilpinia pallida eggs on P. sylvestris, D. pini eggs on Pinus nigra. The first of these attracts the parasitoid C. ruforum, while the la...
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PMID: 20394954
PDF is available here.
PDF is available here.
Avian Diseases (54)2 2010
Abstract
We confirmed high levels of virus replication and an abundant distribution of avian-specific alpha2,3 sialic acid-gal receptors in the oviduct of these turkeys. In the present study, following experimental inoculation of A/turkey/Ohio/313053/04 in breeder turkeys, we detected these viruses in the al...
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PMID: 20608526
PDF is available here.
PDF is available here.
Abstract
Our results indicate that egg spray is the most reliable bioassay to verify data of open-field applications. Apparently, no resistance to abamectin has yet been developed by C. pyri in Emilia-Romagna....
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PMID: 20568628
PDF is available here.
PDF is available here.
Abstract
We were interested to determine the impact of insecticides resistance on fitness of various populations of C. carnea collected over three consecutive years (2005-2007) from different areas of Pakistan. The populations were examined for intrinsic rate of population increase, growth index, fertility,...
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PMID: 20568629
PDF is available here.
PDF is available here.
Abstract
Population cage experiments were employed to detect variability in fitness among Cry2Ab resistant and Cry2Ab susceptible genotypes of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). In two experiments, reciprocal crosses between a Cry2Ab resistant colony (SP15) and a susceptible colony (GR)...
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PMID: 20568630
PDF is available here.
PDF is available here.
Abstract
I or II. Chamber fumigations with 31 and 46% load factors provided additional sorption and concentration data. A. planipennis-infested logs in tarped, 149.1-m3 cargo containers were fumigated at dosages used in successful trials. Logs were monitored for 8 wk for adult emergence. There was no adult e...
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PMID: 20568604
PDF is available here.
PDF is available here.
Abstract
We tested the hypothesis that these bacteria contribute to the adult fly's fitness in a diet-dependent fashion. We predicted that when dietary protein is superabundant, bacterial contribution will be minimal. Conversely, in the absence of protein, or when only non-essential amino acids are present (...
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PMID: 20071385
PDF is available here.
PDF is available here.
Abstract
We show that the same female provides both large and small mating partners with eggs of similar size, weight and lipid content when mated to two males in succession. Importantly, however, eggs provided to small males (less preferred) had higher egg protein content (11% more) than those provided to l...
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PMID: 20106851
PDF is available here.
PDF is available here.
Abstract
We use digital image analysis and modelling of avian vision to quantify the level of pattern mimicry in eight host species of the common cuckoo Cuculus canorus and their respective cuckoo host-races. We measure a range of pattern attributes, including marking size, diversity in size, contrast, cover...
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PMID: 20053650
PDF is available here.
PDF is available here.
Abstract
We describe and evaluate a new mechanism facilitating the transition from sexual reproduction to parthenogenesis. In many sexually reproducing species, a small proportion of unfertilized eggs can hatch spontaneously ('tychoparthenogenesis') and develop into females. Using an analytical model, we sho...
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PMID: 20071382
PDF is available here.
PDF is available here.
Abstract
Aiming to contribute to knowledge of the immature instars of Neotropical Lepidoptera, this study details the morphology of the egg and last instar larvae of Aucula magnifica (Schaus, 1904) (Lepidoptera: Noctuidae: Agaristinae), emphasising the structures of the corium and the chaetotaxy. There is al...
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PMID: 20549065
PDF is available here.
PDF is available here.
Abstract
We determined children's medical, agricultural, and environmental exposures by household, pharmacy, and health facility surveys and Escherichia coli cultures of children, mothers' hands, household animals, and market chickens in Peru. Among 522 children with a positive stool culture, by log-binomial...
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PMID: 20439971
PDF is available here.
PDF is available here.
Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban (21)5 2010
Abstract
This paper compared the differences between Sepiella maindroni wild and cultured eggs, and studied the effects of temperature, salinity, hatching density, and egg type on the hatching rate and hatching time of the eggs. Wild eggs had better quality than cultured eggs. Among cultured eggs, small and...
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PMID: 20707120
PDF is available here.
PDF is available here.
Abstract
We first estimated the concentration-effect relationships between the metal concentrations and individual traits (juvenile survivability, hatchability, fertility) by using toxicity data collected from the literature. A Leslie matrix model of fathead minnow was used to calculate population growth rat...
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PMID: 20153056
PDF is available here.
PDF is available here.
Abstract
The sea-urchin embryo test (SET) has been frequently used as a rapid, sensitive, and cost-effective biological tool for marine monitoring worldwide, but the selection of a sensitive, objective, and automatically readable endpoint, a stricter quality control to guarantee optimum handling and biologic...
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PMID: 20167374
PDF is available here.
PDF is available here.
Zoological Science (27)5 2010
Abstract
From 5 March to 25 July 2008, ichthyoplankton drifting into the Three Gorges Reservoir from the upper reaches of the Yangtze River were sampled daily to investigate the species composition, abundance, and seasonal variation in early-stage fishes in this area. Twenty-eight species belonging to five o...
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PMID: 20443687
PDF is available here.
PDF is available here.
Abstract
We identified germ cells in the testis and ovary on the basis of c-KIT immunoreactivity. M2A was also stained using near or adjacent sections. In 12-week fetuses, c-KIT immunoreactivity was weak, but M2A immunoreactivity was consistently strong. At 15 and 18 weeks of gestation, c-KIT immunoreactivit...
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PMID: 20715565
PDF is available here.
PDF is available here.
Analyst (Cambridge UK) (135)5 2010
Abstract
We report the applications of Mn(2+)-doped ZnS@cysteine nanoparticles (NPs) as matrices for analysis of coccidiostats (lasalocid, monensin, salinomycin and narasin) and peptide mixtures (Met-enk, Leu-enk, HW6 and gramicidin) in surface-assisted laser desorption/ionization time-of-flight mass spectro...
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PMID: 20419264
PDF is available here.
PDF is available here.
Abstract
I summarize the physiology underlying this tradeoff and the ecological contexts in which it may be important. The ideas are illustrated primarily by work from my laboratory on eggs of the sphingid moth Manduca sexta. In particular, I discuss: (1) dynamic changes in metabolic demand and water loss du...
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PMID: 19573530
PDF is available here.
PDF is available here.
Abstract
We explored the efficacy and sustainability of Aedes Densonucleosis Virus (AeDNV) as a biocontrol agent for Ae. aegypti in and among oviposition sites in large laboratory cages (> 92 m3) as a prelude to field trials. Select cages were seeded with AeDNV in a single oviposition site (OPS) with unseede...
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PMID: 20496587
PDF is available here.
PDF is available here.
Abstract
We report that in Drosophila melanogaster, parents raised on poor larval food laid 3-6% heavier eggs than parents raised on standard food, despite being 30 per cent smaller. Their offspring developed 14 h (4%) faster on the poor food than offspring of well-fed parents. However, they were slightly sm...
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PMID: 19875510
PDF is available here.
PDF is available here.
Biology Letters (6)2 2010
Abstract
We report that in Drosophila melanogaster, parents raised on poor larval food laid 3-6% heavier eggs than parents raised on standard food, despite being 30 per cent smaller. Their offspring developed 14 h (4%) faster on the poor food than offspring of well-fed parents. However, they were slightly sm...
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PMID: 19875510
PDF is available here.
PDF is available here.
Developmental Biology (340)2 2010
Abstract
We used sea urchin eggs whose oocytes are arrested in G1 to investigate in vivo the molecular mechanisms regulating initiation of replication after fertilization. Unexpectedly, we found that CDC6, Cdt1 and MCM3, components of the pre-replication complexes (pre-RC) which license origins for replicati...
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PMID: 20153311
PDF is available here.
PDF is available here.
Avian Pathology (39)2 2010
Abstract
Experiments were first conducted to compare and evaluate different methods of Ascaridia galli larval recovery from the chicken intestine. The number of larvae recovered from the intestinal wall of chickens infected with 1000 embryonated A. galli eggs and killed 15 days post infection (p.i.) by three...
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PMID: 20390541
PDF is available here.
PDF is available here.
Avian Pathology (39)2 2010
Abstract
Recently, the causal relationship between eggshell apex abnormalities (EAA) and Mycoplasma synoviae was described. This eggshell pathology has only been documented in table egg layers both spontaneously and experimentally infected with M. synoviae, suggesting that meat-type layers are less prone to...
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PMID: 20390548
PDF is available here.
PDF is available here.
Naturwissenschaften (97)4 2010
Abstract
Our results suggest that such behavior is frequent and may reduce the fitness of parents. Its evolutionary implications for population ecology should be considered, since it appeared to be controlled by environmental and spatial factors....
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PMID: 20195564
PDF is available here.
PDF is available here.