Oviposition: The process of laying or shedding fully developed eggs (OVA) from the female body. The term is usually used for certain INSECTS or FISHES with an organ called ovipositor where eggs are stored or deposited before expulsion from the body.Wasps: Any of numerous winged hymenopterous insects of social as well as solitary habits and having formidable stings.Butterflies: Slender-bodies diurnal insects having large, broad wings often strikingly colored and patterned.Aedes: A genus of mosquitoes (CULICIDAE) frequently found in tropical and subtropical regions. YELLOW FEVER and DENGUE are two of the diseases that can be transmitted by species of this genus.Hemiptera: A large order of insects characterized by having the mouth parts adapted to piercing or sucking. It is comprised of four suborders: HETEROPTERA, Auchenorrhyncha, Sternorrhyncha, and Coleorrhyncha.Oviparity: The capability of producing eggs (OVA) from which young are hatched outside the body. While mostly referring to nonmammalian species, this does include MAMMALS of the order MONOTREMATA.Heteroptera: A suborder of HEMIPTERA, called true bugs, characterized by the possession of two pairs of wings. It includes the medically important families CIMICIDAE and REDUVIIDAE. (From Dorland, 28th ed)Hymenoptera: An extensive order of highly specialized insects including bees, wasps, and ants.Ovum: A mature haploid female germ cell extruded from the OVARY at OVULATION.Culex: A genus of mosquitoes (CULICIDAE) commonly found in tropical regions. Species of this genus are vectors for ST. LOUIS ENCEPHALITIS as well as many other diseases of man and domestic and wild animals.Larva: Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.Beetles: INSECTS of the order Coleoptera, containing over 350,000 species in 150 families. They possess hard bodies and their mouthparts are adapted for chewing.Host-Parasite Interactions: The relationship between an invertebrate and another organism (the host), one of which lives at the expense of the other. Traditionally excluded from definition of parasites are pathogenic BACTERIA; FUNGI; VIRUSES; and PLANTS; though they may live parasitically.Moths: Insects of the suborder Heterocera of the order LEPIDOPTERA.Insect Vectors: Insects that transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.Nymph: The immature stage in the life cycle of those orders of insects characterized by gradual metamorphosis, in which the young resemble the imago in general form of body, including compound eyes and external wings; also the 8-legged stage of mites and ticks that follows the first moult.Arthropod Antennae: Paired sense organs connected to the anterior segments of ARTHROPODS that help them navigate through the environment.Rutaceae: A plant family in the order Sapindales that grows in warmer regions and has conspicuous flowers.Pest Control, Biological: Use of naturally-occuring or genetically-engineered organisms to reduce or eliminate populations of pests.Amblycera: A suborder of chewing lice, in the order PHTHIRAPTERA, that are ectoparasites of poultry and some mammals.Plantago: A plant genus of the family Plantaginaceae. The small plants usually have a dense tuft of basal leaves and long, leafless stalks bearing a terminal spike of small flowers. The seeds, known as PSYLLIUM, swell in water and are used as laxatives. The leaves have been used medicinally.Entomology: A discipline or occupation concerned with the study of INSECTS, including the biology and the control of insects.Herbivory: The act of feeding on plants by animals.Mosquito Control: The reduction or regulation of the population of mosquitoes through chemical, biological, or other means.Sexual Behavior, Animal: Sexual activities of animals.Population Density: Number of individuals in a population relative to space.Pheromones: Chemical substances, excreted by an organism into the environment, that elicit behavioral or physiological responses from other organisms of the same species. Perception of these chemical signals may be olfactory or by contact.Sensilla: Collective name for a group of external MECHANORECEPTORS and chemoreceptors manifesting as sensory structures in ARTHROPODS. They include cuticular projections (setae, hairs, bristles), pores, and slits.Reproduction: The total process by which organisms produce offspring. (Stedman, 25th ed)Feeding Behavior: Behavioral responses or sequences associated with eating including modes of feeding, rhythmic patterns of eating, and time intervals.Anacardium: A plant genus of the family ANACARDIACEAE. This is the source of the familiar cashew nuts, which are heat treated to remove the irritant toxin. Cashew nut shell liquid (frequently abbreviated as CNSL) is a major source of alkenyl phenolic compounds, especially ANACARDIC ACIDS, cardol, and cardanol.Receptors, Odorant: Proteins, usually projecting from the cilia of olfactory receptor neurons, that specifically bind odorant molecules and trigger responses in the neurons. The large number of different odorant receptors appears to arise from several gene families or subfamilies rather than from DNA rearrangement.Ischnocera: A suborder of chewing lice, in the order PHTHIRAPTERA, that are parasites of birds and mammals.Iridoids: A type of MONOTERPENES, derived from geraniol. They have the general form of cyclopentanopyran, but in some cases, one of the rings is broken as in the case of secoiridoid. They are different from the similarly named iridals (TRITERPENES).Ficus: A plant genus of the family MORACEAE. It is the source of the familiar fig fruit and the latex from this tree contains FICAIN.Clutch Size: The number of offspring produced at one birth by an oviparous or ovoviviparous animal.Behavior, Animal: The observable response an animal makes to any situation.Insect Control: The reduction or regulation of the population of noxious, destructive, or dangerous insects through chemical, biological, or other means.Polydnaviridae: A family of insect viruses isolated from endoparasitic hymenopteran insects belonging to the families Ichneumonidae and Braconidae. The two genera are Ichnovirus and Bracovirus.Aristolochia: A plant genus of the family ARISTOLOCHIACEAE. Species of this genus have been used in traditional medicine but they contain aristolochic acid which is associated with nephropathy. These are sometimes called 'snakeroot' but that name is also used with a number of other plants such as POLYGALA; SANICULA; ASARUM; ARISTOLOCHIA; AGERATINA; and others.Predatory Behavior: Instinctual behavior pattern in which food is obtained by killing and consuming other species.Pupa: An inactive stage between the larval and adult stages in the life cycle of insects.Insect Repellents: Substances causing insects to turn away from them or reject them as food.Oviducts: Ducts that serve exclusively for the passage of eggs from the ovaries to the exterior of the body. In non-mammals, they are termed oviducts. In mammals, they are highly specialized and known as FALLOPIAN TUBES.Lepidoptera: A large order of insects comprising the butterflies and moths.Sasa: A plant genus of the family POACEAE. Folin is the water-soluble extract from Sasa albomarginata. Sasa kurinensis is an ingredient of Sho-ju-sen, a Japanese herbal medicine.Gentiana: A plant genus of the family Gentianaceae whose members contain SECOIRIDOIDS and have been used in TRADITIONAL MEDICINE for suppressing INFLAMMATION.Tetranychidae: Family of spider MITES, in the superfamily Tetranychoidea, suborder Trombidiformes.Glucosinolates: Substituted thioglucosides. They are found in rapeseed (Brassica campestris) products and related cruciferae. They are metabolized to a variety of toxic products which are most likely the cause of hepatocytic necrosis in animals and humans.Culicidae: A family of the order DIPTERA that comprises the mosquitoes. The larval stages are aquatic, and the adults can be recognized by the characteristic WINGS, ANIMAL venation, the scales along the wing veins, and the long proboscis. Many species are of particular medical importance.Pollination: The transfer of POLLEN grains (male gametes) to the plant ovule (female gamete).Dengue: An acute febrile disease transmitted by the bite of AEDES mosquitoes infected with DENGUE VIRUS. It is self-limiting and characterized by fever, myalgia, headache, and rash. SEVERE DENGUE is a more virulent form of dengue.

The crayfish plasma clotting protein: a vitellogenin-related protein responsible for clot formation in crustacean blood. (1/908)

Coagulation in crayfish blood is based on the transglutaminase-mediated crosslinking of a specific plasma clotting protein. Here we report the cloning of the subunit of this clotting protein from a crayfish hepatopancreas cDNA library. The ORF encodes a protein of 1,721 amino acids, including a signal peptide of 15 amino acids. Sequence analysis reveals that the clotting protein is homologous to vitellogenins, which are proteins found in vitellogenic females of egg-laying animals. The clotting protein and vitellogenins are all lipoproteins and share a limited sequence similarity to certain other lipoproteins (e.g., mammalian apolipoprotein B and microsomal triglyceride transfer protein) and contain a stretch with similarity to the D domain of mammalian von Willebrand factor. The crayfish clotting protein is present in both sexes, unlike the female-specific vitellogenins. Electron microscopy was used to visualize individual clotting protein molecules and to study the transglutaminase-mediated clotting reaction. In the presence of an endogenous transglutaminase, the purified clotting protein molecules rapidly assemble into long, flexible chains that occasionally branch.  (+info)

Estrogen induction of VLDLy assembly in egg-laying hens. (2/908)

The yolk of a 60-g chicken egg contains 6 g of triacylglycerols transported to the oocyte from the liver of the laying hen in apolipoprotein (apo) B-containing particles. With the onset of egg production, estrogen shifts hepatocytic lipoprotein production from generic VLDL to VLDLy (yolk targeted). These VLDLy are triacylglycerol-rich particles; they are reduced in size by one half, are resistant to lipoprotein lipase and are taken up intact by oocyte receptors. The VLDLy pathway for apoB provides sufficient energy for the caloric requirements of chick development. VLDLy size reduction occurs in spite of surplus liver triacylglycerols and is necessary for VLDL particles to pass through the granulosa basal lamina and reach the receptors located on the oocyte surface. New ultrastructural data show that some proximal tubule cells of bird kidney secrete generic VLDL, perhaps providing energy and other VLDL-associated nutrients to tissues bypassed by VLDLy. Birds are an apoB100-only species, providing a natural in vivo model with which to investigate mechanisms of apoB100 VLDL assembly. Preliminary studies of liver lipoprotein assembly intermediates isolated from the biosynthetic membranes (endoplasmic reticulum) of the laying hen are consistent with the presence of both putative first- and second-step precursor particles of VLDLy. These findings suggest that the two-step mechanism of apoB core lipidation is an ancient development in apoB biology, handed down to mammals from oviparous ancestors.  (+info)

The effects of age and sex steroids on the macrophage population in the ovary of the chicken, Gallus domesticus. (3/908)

The role of macrophages in the function of the hen ovary has not yet been described, although these cells may be an important regulator of ovarian function in mammals. The aim of this study was to determine the changes in the frequency of macrophages during ageing and follicular atresia, and the effects of sex steroids on the macrophage population in the hen ovary. Cryostat sections of ovarian tissues of immature, young laying and old laying hens and those of immature hens treated with or without diethylstilboestrol (DES) or progesterone were immunostained for macrophage cells using mouse anti-chicken macrophage monoclonal antibody. Macrophages were observed under a light microscope and counted using a computer assisted image analyser. The frequency of macrophages in both the stroma and theca of primary follicles was significantly greater in young laying hens than in immature and old laying hens and these cells were more frequent in old laying hens than in immature hens (P < 0.01). Macrophages were more frequent in atretic follicles than in normal follicles (P < 0.01). The number of macrophages in both the stroma and theca of primary follicles of DES-treated birds was significantly greater than in those of progesterone-treated and control birds (P < 0.01). Progesterone had no significant effect on the population of macrophages. These results suggest that macrophages in the ovary increase in association with sexual maturation of birds and atresia of follicles and decrease during ageing. Oestrogen may be one of the factors that affect the population of macrophages in the hen ovary.  (+info)

Effect of long-term food restriction on pituitary sensitivity to cLHRH-I in broiler breeder females. (4/908)

The effect of long-term food restriction on the sensitivity of the pituitary to exogenously administered chicken luteinizing hormone releasing hormone I (cLHRH-I) was investigated in three groups of broiler breeder females fed ad libitum, fed a restricted quantity of food or fed a restricted quantity of food to obtain an intermediate body weight between those of the first two groups. At 16 weeks of age, basal FSH release was higher in ad libitum fed birds, culminating in ovarian development and subsequent oestradiol production by the small follicles. At this age, LH secretion was independent of ovarian feedback factors. In all groups, cLHRH-I was most active in releasing LH in intact and ovariectomized animals and, to a lesser extent, in releasing FSH in ovariectomized birds. At 39 weeks of age, basal FSH concentrations were similar among intact animals of all groups, whereas LH concentrations differed among groups, with higher values in the restricted birds. This food effect was enhanced in ovariectomized birds. Furthermore, the high response to cLHRH-I in the ovariectomized, restricted birds compared with the ad libitum, ovariectomized group suggests an improved sensitivity of the hypothalamic-pituitary axis. In conclusion, birds fed ad libitum showed the highest responsiveness to ovarian factors and to cLHRH-I in releasing FSH in the period before sexual maturity. No effect of amount of feeding could be observed for LH. However, during the egg laying period, LH release by cLHRH-I was highly dependent on amount of feeding and on ovarian feedback regulation. This finding indicates that the amount of feeding can modify the sensitivity of the pituitary to cLHRH-I, and possibly to gonadal hormones, during the laying period.  (+info)

Quantitative estimates of cytoplasmic and nuclear oestrogen receptors in chick oviduct. Effect of oestrogen on receptor concentration and subcellular distribution. (5/908)

(3H)Oestradiol exchange techniques were developed for the determination of specific oestrogen receptor site concentrations in the cytoplasm and nuclei of chick oviduct cells. Non-labelled, receptor-bound oestrogens were exchanged with (3H)oestradiol during a 24-h incubation at 20 degrees C, 2 h at 30 degrees C or 45 min at 3 degrees C. Both "soluble" and "insoluble" nuclear receptors were stable for at least 6 h at 30 degrees C and 3 degrees C but a proportion (approx. 30%) of cytoplasmic sites from withdrawn chickens were inactivated after 2 h at 20 degrees C. The magnum of 4-week-old immature chickens (weight = 15 mg) contained 0.20 pmol of oestrogen receptor which corresponds to 4275 receptor sites/cell, when it is assumed that all magnum cells have equal concentrations of receptor. In primarily stimulated chickens of similar age which had received 10x1 mg of oestradiol benzoate/day, the magnum weighed approximately 800 mg and contained 8.65 pmol of oestrogen receptor (4610 sites/cell). Withdrawal from primary oestrogenic stimulation for 3-6 weeks resulted in a 110 mg magnum which contained 1.20 pmol of receptor (2225 sites/cell). Oviducts from immature and withdrawn chickens had the majority (73-77%) of their oestrogen receptors sites in the receptor sites in the cytoplasmic fraction, while in primary stimulated chicken oviducts the majority (82%) of receptor sites were located in the nucleus. A single secondary injection of oestradiol, to oestrogen-withdrawn chickens, resulted in apparent translocation of cytoplasmic receptors to the nucleus during the first hour after injection. The magnitude of the decline in cytoplasmic receptor, and the concurrent increase in nuclear receptor concentration, was dose-dependent between 2 and 100 mug oestradiol/kg body weight. Larger doses of oestradiol up to 1 mg/kg did not increase the concentration of nuclear receptor above the maximum level seen at 100 mug oestradiol/kg. The initial rapid accumulation of nuclear receptor sites was followed by a period of progressive decline. The initial rapid accumulation of nuclear receptor sites was followed by a period of progressive decline. By 15 h after an injection of 100 mug oestradiol/kg, the concentration of nuclear sites had reached pre-injection levels. During the same time period, the depleted cytoplasmic receptor levels were replenished such that they reached control values by 12 h and were about 150% of the pre-injection level at 24 h.  (+info)

Control of oocyte maturation in sexually mature Drosophila females. (6/908)

In many sexually mature insects egg production and oviposition are tightly coupled to copulation. Sex-Peptide is a 36-amino-acid peptide synthesized in the accessory glands of Drosophila melanogaster males and transferred to the female during copulation. Sex-Peptide stimulates vitellogenic oocyte progression through a putative control point at about stage 9 of oogenesis. Here we show that application of the juvenile hormone analogue methoprene mimics the Sex-Peptide-mediated stimulation of vitellogenic oocyte progression in sexually mature virgin females. Apoptosis is induced by 20-hydroxyecdysone in nurse cells of stage 9 egg chambers at physiological concentrations (10(-7) M). 20-Hydroxyecdysone thus acts as an antagonist of early vitellogenic oocyte development. Simultaneous application of juvenile hormone analogue, however, protects early vitellogenic oocytes from 20-hydroxyecdysone-induced resorption. These results suggest that the balance of these hormones in the hemolymph regulates whether oocytes will progress through the control point at stage 9 or undergo apoptosis. These data are further supported by a molecular analysis of the regulation of yolk protein synthesis and uptake into the ovary by the two hormones. We conclude that juvenile hormone is a downstream component in the Sex-Peptide response cascade and acts by stimulating vitellogenic oocyte progression and inhibiting apoptosis. Since juvenile hormone analogue does not elicit increased oviposition and reduced receptivity, Sex-Peptide must have an additional, separate effect on these two postmating responses.  (+info)

Egg laying is delayed but worm fecundity is normal in SCID mice infected with Schistosoma japonicum and S. mansoni with or without recombinant tumor necrosis factor alpha treatment. (7/908)

Mice with severe combined immunodeficiency (SCID mice) lack functional B and T cells. Egg laying by Schistosoma mansoni and S. japonicum was delayed in SCID mice, but in a matter of weeks worm fecundity was equivalent to that in intact mice. SCID mice formed smaller hepatic granulomas and showed less fibrosis than did intact mice. The reduction in egg-associated pathology in SCID mice correlated with marked reductions in interleukin-4 (IL-4), IL-5, IL-13, and gamma interferon mRNA expression in the liver. S. mansoni infections were frequently lethal for SCID mice infected for more than 9 weeks, while S. japonicum-infected SCID mice died at the same rate as infected intact mice. We were unable to affect hepatic granuloma formation or egg laying by worms in SCID mice by administration of recombinant murine tumor necrosis factor alpha (TNF-alpha). In fact, SCID and BALB/c mice appeared to express nearly equivalent levels of TNF-alpha mRNA in their granulomatous tissues, suggesting that there is little or no deficit in TNF-alpha expression in infected SCID mice. The data indicate that TNF-alpha may be in large part derived from a non-T-cell source. Together, these findings provide little evidence that TNF-alpha alone can reconstitute early fecundity, granuloma formation, or hepatic fibrosis in schistosome-infected SCID mice.  (+info)

Experiments on blocking and unblocking of first meiotic metaphase in eggs of the parthenogenetic stick insect Carausius morosus Br. (Phasmida, Insecta). (8/908)

The eggs of the parthenogenetic stick insect Carausius morosus, which remain arrested in first meiotic metaphase until oviposition, must be activated in order to develop. The activating agent is oxygen from the air, which enters the egg cell through the micropyle. An exposure shorter than one minute is sufficient to release the blockage. In non-activated (micropyle-less) eggs the first metaphase chromsomes either degenerate or change into an interphase nucleus. This nucleus polyploidizes by endoreduplication, and then either degenerates or multiplies by amitosis. Similarly more generations of nuclei may arise resulting in a chaotic development. These nuclei survive better in the anterior region of the egg. The question of whether the cytoplasmic factors which control nuclear behaviour, also operate in eggs of C. morosus is discussed.  (+info)

  • In a series of experiments, no consistent effect of adult experience, i.e., exposure to the naturally occurring yeasts, Candida sonorensis and Clavispora opuntiae, on oviposition choice or short-distance attraction in inbred lines of Drosophila buzzatii was found. (elsevier.com)
  • G. E. Davis a.nd Dr. W. Burgdorfer report (conversation) that the largest mnnber of eggs they have observed in a single oviposition has been 233 and 327, respectively. (google.com.au)
  • These receptors are believed to function as mechano- and chemoreceptors to evaluate the suitability of a host plant for feeding, oviposition, and subsequent larval development. (vt.edu)
  • Moreover, the researchers were able to identify an odorant receptor which is involved in the detection of the typical smell of larval frass and thereby governs competition avoidance during oviposition. (phys.org)
  • Two greenhouse experiments were conducted to evaluate the effects of photoperiod and application of plant growth regulators on two factors: 1) feeding and oviposition site selection and 2) spatial distribution of feeding and oviposition sites on individual chrysanthemum plants. (vt.edu)
  • A receptor protein that is involved in the detection of these compounds in the feces of caterpillars ensures that the female insects avoid attacked plants and look instead for another, better oviposition site. (phys.org)
  • Scientists from the Max Planck Institute for Chemical Ecology demonstrated that not only may plant odors determine the best oviposition site, but also the frass of other larvae of the same species. (phys.org)
  • The lack of consistent effect on oviposition choice was also found in one experiment in which the flies were starved and in another experiment in which choice was determined on 2 consecutive days. (elsevier.com)
  • tion and feeding has no effect upon the period between feeding and oviposition. (google.com.au)
  • Does habitat modification affect oviposition by the salt marsh mosquito, Ochlerotatus vigilax (Skuse)(Diptera: Culicida)? (edu.au)
  • 3.Despite a strong preference for fermented substrates, moderate attraction to and oviposition on unfermented fruit might be adaptive in view of the fly's capacity to vector yeast. (lu.se)
  • However, the data indicated that pairwise comparisons between randomly selected populations from the two larval selection regimes would lead to a range of possible outcomes, suggesting, in several cases, that selection for larval urea tolerance had led to significant differentiation of adult oviposition preference for urea in one or the other direction. (springer.com)
  • Accordingly, when it came time to design my field experiment, I was interested in testing the effectiveness of eco-friendly botanicals as an oviposition deterrent against container breeders in Texas, and with an eye towards how ordinary residents might use them to help reduce mosquito populations in their neighborhoods or backyards. (globe.gov)
  • These results substantiate that one A. gambiae female uses multiple breeding sites for oviposition, and thus, average genetic relatedness for breeding sites with high larval populations tends to be low. (ajtmh.org)
  • Considerable variation in oviposition preference was seen both within and among populations, with four of the ten populations showing a significant mean preference for ureasupplemented food. (springer.com)
  • As mosquito populations are reduced from a variety of measures, the probability that any given uncontrolled oviposition site will continually be treated with pyriproxyfen falls proportionally. (eaglemedicalservicesllc.com)
  • The mean height of flight was estimated, and seasonal changes in sex ratios were determined for each species;Corn rootworm adult emergence, adult populations, and oviposition were monitored throughout the season in eight fields in 1981-83. (iastate.edu)
  • Oviposition was found to be nearly complete by the end of the first week of Sept. Regression equations are presented for the relationship between northern corn rootworm adult population parameters and final season egg populations. (iastate.edu)
  • Activity of both reciprocal crosses was intermediate and not significantly different from each other, suggesting that nuclear genetic, rather than cytoplasmic factors contribute to differences in oviposition activity between the populations. (ucviden.dk)
  • In contrast to the notable attention paid to larval plasticity, few studies have examined maternal plasticity in oviposition in response to varied hydroperiods. (thefreelibrary.com)
  • Evolution of maternal plasticity in oviposition would allow mothers to achieve greater overall fitness. (thefreelibrary.com)
  • We argue that plasticity in oviposition site selection and maternal effects on offspring phenotypes may be an important, yet underexplored, mechanism by which environmental conditions have consequences across generations. (uclouvain.be)
  • 2) Three transects containing 12 pairs of oviposition traps with both cups containing a similar number of larvae, but one containing a given level (0, 1, 3) of caged nymphs. (uncg.edu)
  • Given the consecutive cases of dengue in East Timor, from 2014, mainly in the municipality of Dili, it became essential to plan a vector monitoring program through oviposition traps (ovitraps) 7 7 Whelan P, Hapgoog GA. Mosquito Survey of Dili, East Timor, and Implications for Disease Control Department of Health and Community Services. (scielosp.org)
  • aegypti high oviposition activity areas was performed. (conicet.gov.ar)
  • aegypti oviposition activity. (conicet.gov.ar)
  • aegypti oviposition activity in the south of Ora´n city where tire dumps predominate. (conicet.gov.ar)
  • aegypti attraction to various oviposition container configurations. (edu.au)
  • Scientists from the Max Planck Institute for Chemical Ecology in Jena, Germany, demonstrated that not only may plant odors determine the best oviposition site, but also the frass of other larvae of the same species. (mpg.de)
  • The oviposition in this species starts 3 days after the blood meal and in general lasts for 6 days [ 6 , 7 ]. (hindawi.com)
  • MATERIALS AND METHODS: The oviposition attractancy was determined against two mosquito species to various concentrations viz. (biomedsearch.com)
  • This study is being conducted over multiple years to examine both oviposition preference and larval survival on nine milkweed species endemic to Iowa. (iastate.edu)
  • Canterbury (1978) reports a general selection of vegetation hanging over the water for the oviposition of eastern North American sialids, however, some species preferred leaves, and other species oviposited on twigs or branches. (tolweb.org)
  • Rutaceae), fail to show any significant oviposition preference induction with two-day prior exposure to any of the host species tested. (valpo.edu)
  • It appears that the eastern tiger swallowtail butterfly, while polyphagous as a species (feeding on more than 9 families of plants), and variable in its population responses to oviposition favorites, has what may be considered a genetic "hard-wiring" at an individual level, with no evidence that preferences change with recent oviposition experience. (valpo.edu)
  • Variations in the site chosen for oviposition have been observed within the species. (fiocruz.br)
  • In this perspective, Aleppo pine offers better oviposition conditions for the processionary moth compared to the maritime pine Pinus pinaster Ait. (sisef.org)
  • Preimaginal conditioning affects oviposition choices in the silkworm moth (Bombyx mori). (bvsalud.org)
  • As part of a project aimed at developing oviposition attractants for the control and surveillance of Phlebotomus papatasi (a vector of Old-World cutaneous leishmaniasis), we tested the hypothesis that gravid sand flies are attracted to chemical cues emanating from the growth medium of conspecific larvae - predominantly larvae-conditioned host feces that represents a suitable oviposition site. (biomedcentral.com)
  • Myers A, Bahlai CA, Landis DA (2019) Habitat type influences Danaus plexippus (Lepidoptera: Nymphalidae) oviposition and egg survival on Asclepias syriaca (Gentianales: Apocynaceae). (datadryad.org)
  • In this review, we use examples from the literature to demonstrate that habitat fragmentation has important consequences on oviposition site selection in insects, with carryover effects on offspring survival and, therefore, population dynamics. (uclouvain.be)
  • Without considering the impact of habitat fragmentation on oviposition site selection, it will be difficult to assess the effect of fragmentation on offspring fitness, and ultimately to understand the impact of anthropogenic-induced environmental change on population viability. (uclouvain.be)
  • Here, we show that microplastic concentrations in the North Pacific Subtropical Gyre (NPSG) have increased by two orders of magnitude in the past four decades, and that this increase has released the pelagic insect Halobates sericeus from substrate limitation for oviposition. (royalsocietypublishing.org)
  • There were no differences m oviposition between flies fed on the different concentrations of the two diets. (sun.ac.za)
  • Four different concentrations-62.5 parts per million (ppm), 125 ppm, 250 ppm, and 500 ppm-were prepared using acetone and tested for ovicidal and oviposition deterrent activities. (blogspot.com)
  • CONCLUSIONS: In this result it can be concluded that the three compounds possess remarkable oviposition attractancy against Ae. (biomedsearch.com)
  • We report the results of a systematic assessment of media from various developmental stages of the sand fly using oviposition and olfactometer behavioral assays. (biomedcentral.com)
  • Wiklund C (1977) Oviposition, feeding and spatial separation of breeding and foraging habitats in a population of Leptidea sinapis (Lepidoptera). (springer.com)
  • In Lepidoptera, choosing the right host plant during oviposition is particularly important, because the small larvae cannot easily forage for alternate host plants. (jneurosci.org)
  • 0.05) in feeding and oviposition densities on chrysanthemums treated with plant growth regulators napthalene napthaleneacetic acid, gibberellic acid, and daminozide. (vt.edu)
  • 2. This study presents a test of whether extreme isolation and exposure to different host plants can produce intra-specific divergence in oviposition preference in alpine insects. (epfl.ch)
  • Methodology: Oviposition activity was detected in Ora´n City (Salta province) using ovitraps, weekly replaced (October 2005-2007). (conicet.gov.ar)
  • Insect parasitoids are known to deposit chemical signals on utilized hosts following oviposition. (brillonline.com)
  • Oviposition-deterring pheromone deposited on blue. (brillonline.com)
  • Marking fruit with this putative oviposition-deterring pheromone without associated egg laying was sufficient to induce the deterring effect, while oviposition alone without subsequent marking had no effect. (brillonline.com)
  • To our knowledge, this is the first demonstration of a hymenopteran oviposition-deterring pheromone that is deposited externally on the surface of the fruit skin rather than on the surface of the parasitized larva. (brillonline.com)
  • The length of activity of the oviposition-deterring pheromone described here should be sufficient to prevent multiple egg-laying into a host that cannot support more than one parasitoid larva, and thus reduce intraspecific competition. (brillonline.com)
Sex-peptide is the molecular basis of the sperm effect in Drosophila melanogaster | PNAS
Sex-peptide is the molecular basis of the sperm effect in Drosophila melanogaster | PNAS (pnas.org)
African Ixodoidea: Ticks of the Sudan - Harry Hoogstraal - Google Books
African Ixodoidea: Ticks of the Sudan - Harry Hoogstraal - Google Books (books.google.com.au)
DiVA - Sökresultat
DiVA - Sökresultat (diva-portal.org)
Grayling (butterfly) - Wikipedia
Grayling (butterfly) - Wikipedia (en.wikipedia.org)
Vanessa cardui - Wikipedia
Vanessa cardui - Wikipedia (en.wikipedia.org)
Codling moth - Wikipedia
Codling moth - Wikipedia (en.wikipedia.org)
Spermless males elicit large-scale female responses to mating in the malaria mosquito Anopheles gambiae | PNAS
Spermless males elicit large-scale female responses to mating in the malaria mosquito Anopheles gambiae | PNAS (pnas.org)
Megaloptera
Megaloptera (tolweb.org)
Healthy Fruit - Vol. 26, No. 5, May 1, 2018
Healthy Fruit - Vol. 26, No. 5, May 1, 2018 (docs.google.com)
Parategeticula pollenifera
Parategeticula pollenifera (tolweb.org)
MPI for Chemical Ecology | Max-Planck-Gesellschaft
MPI for Chemical Ecology | Max-Planck-Gesellschaft (mpg.de)
Lampronia capitella
Lampronia capitella (tolweb.org)
Tegeticula synthetica
Tegeticula synthetica (tolweb.org)
Tegeticula maderae
Tegeticula maderae (tolweb.org)
Tettigoniidae
Tettigoniidae (tolweb.org)
Frontiers | Bemisia tabaci MED Population Density as Affected by Rootstock-Modified Leaf Anatomy and Amino Acid Profiles in...
Frontiers | Bemisia tabaci MED Population Density as Affected by Rootstock-Modified Leaf Anatomy and Amino Acid Profiles in... (frontiersin.org)
Publications</span><span class=...
Publications</span><span class=... (faculty.washington.edu)
Density-dependence in the declining population of the monarch butterfly | Scientific Reports
Density-dependence in the declining population of the monarch butterfly | Scientific Reports (nature.com)
Frontiers | Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia...
Frontiers | Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia... (frontiersin.org)
Planta - incl. option to publish open access
Planta - incl. option to publish open access (springer.com)
Apes and monkeys adjust grooming behavior to their audience | Max-Planck-Gesellschaft
Apes and monkeys adjust grooming behavior to their audience | Max-Planck-Gesellschaft (mpg.de)
Chimpanzees and sooty mangabeys interfere with other group members' relationships | Max-Planck-Gesellschaft
Chimpanzees and sooty mangabeys interfere with other group members' relationships | Max-Planck-Gesellschaft (mpg.de)
Ears for Icarus | Max-Planck-Gesellschaft
Ears for Icarus | Max-Planck-Gesellschaft (mpg.de)
Odorant reception in the malaria mosquito Anopheles gambiae | Nature
Odorant reception in the malaria mosquito Anopheles gambiae | Nature (nature.com)
Frontiers | Quantitative and Discrete Evolutionary Changes in the Egg-Laying Behavior of Single Drosophila Females | Frontiers...
Frontiers | Quantitative and Discrete Evolutionary Changes in the Egg-Laying Behavior of Single Drosophila Females | Frontiers... (frontiersin.org)
SciELO - Public Health - Avaliação da armadilha ovitrampa iscada com atraente natural para o monitoramento de Aedes spp. em...
SciELO - Public Health - Avaliação da armadilha ovitrampa iscada com atraente natural para o monitoramento de Aedes spp. em... (scielosp.org)
Insects | Free Full-Text | Insecticide Effect of Zeolites on the Tomato Leafminer Tuta absoluta (Lepidoptera: Gelechiidae)
Insects | Free Full-Text | Insecticide Effect of Zeolites on the Tomato Leafminer Tuta absoluta (Lepidoptera: Gelechiidae) (mdpi.com)
Plants | Free Full-Text | The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores
Plants | Free Full-Text | The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores (mdpi.com)
Fergusonina
Fergusonina (tolweb.org)
Zeitschrift für Naturforschung C
Zeitschrift für Naturforschung C (degruyter.com)
The mosquito adulticidal Chromobacterium sp. Panama causes transgenerational impacts on fitness parameters and elicits...
The mosquito adulticidal Chromobacterium sp. Panama causes transgenerational impacts on fitness parameters and elicits... (parasitesandvectors.biomedcentral.com)
Alternatives to neonicotinoid insecticides for pest control: case studies in agriculture and forestry | SpringerLink
Alternatives to neonicotinoid insecticides for pest control: case studies in agriculture and forestry | SpringerLink (link.springer.com)
Gustatory Sensing Mechanism Coding for Multiple Oviposition Stimulants in the Swallowtail Butterfly, Papilio Xuthus | Journal...
Gustatory Sensing Mechanism Coding for Multiple Oviposition Stimulants in the Swallowtail Butterfly, Papilio Xuthus | Journal... (jneurosci.org)
Culex molestus Forskal (Diptera: Culicidae) in Australia: colonis...: Ingenta Connect
Culex molestus Forskal (Diptera: Culicidae) in Australia: colonis...: Ingenta Connect (ingentaconnect.com)