• Reapply insecticide to the area to prevent further larval development. (ehow.com)
  • Overall, we found no impact of any pesticide on immature development time and relatively weak effects on larval herbivory or survival to adulthood. (nature.com)
  • The life cycles of many marine species depend on a dispersive larval stage that connects spatially segregated populations. (frontiersin.org)
  • A long pelagic larval phase can help a species to break its parasite cycles. (wikipedia.org)
  • Consequently, these species have short pelagic larval durations and do not disperse long distances. (wikipedia.org)
  • The development of industrial farming of marine species is just starting in Norway and the future Norwegian market is expected to be extremely big. (aquafeed.com)
  • In the course of captive rearing to investigate the larval development of the species, I observed an unusual partial loss of pigmentation in two individuals from two widely separated locations. (bioone.org)
  • Reproductive state, larval occurrence and recruitment patterns were measured over a 2-year period for each species. (ingentaconnect.com)
  • The pattern of larval occurrence and recruitment for T. ventricosus exhibits the least concurrence of the species examined. (ingentaconnect.com)
  • Larval survivorship and growth parameters were monitored on the roots of 29 plant species comprised of corn, corn field grassy weeds, native prairie grasses, fence-row/forage grasses, and small grain crops. (usda.gov)
  • Growth and development of larvae were significantly slower on most species other than corn and adults were recovered from only five plant species in addition to corn. (usda.gov)
  • Larval recovery and growth (measured as increases in head capsule width and accumulation of dry weight) data were recorded at five samplings (6, 10, 14, 20, and 24 d) after initial infestation of the 29 species. (usda.gov)
  • Larval recovery and growth were impacted by both species and time after infestation. (usda.gov)
  • Growth and development of larvae on plant species were significantly slower on most species other than maize, however, 18 of the species had larvae develop to the 2nd instar while larvae on 14 species had development to the 3rd instar. (usda.gov)
  • The larval stage lasts about 5-7 days for most species. (unl.edu)
  • Marine tests showed an inhibition of growth with the two different algal species (P. tricornutum and D. tertiolecta), an inhibition of bioluminescence in the bacterium A. fischeri, an alteration on the correct early development of the serpulid F. enigmaticus larvae and immobilization of the copepod A. tonsa individuals at both 24 and 48 hours of exposure. (easychair.org)
  • This disease is contracted only by persons who drink water contaminated by tiny copepods containing larval stages of the parasite Dracunculus medinensis. (cdc.gov)
  • Our findings demonstrate that DOPAL synthase plays a critical role in mosquito larval development and adult survival and suggest that DOPAL synthase could be a good candidate gene in RNAi intervention strategies in mosquito control. (biomedcentral.com)
  • This hypothesis views larval survival and successful recruitment as chance events, which numerous studies on larval behavior and ecology have since shown to be false. (wikipedia.org)
  • The use of low-light intensity during larval rearing has the potential to dramatically improve larval survival during the first two weeks of culture. (edu.au)
  • Temperature during larval development and adult maintenance influences the survival of Anopheles gambiae s.s. (biomedcentral.com)
  • Data currently exist on the influence of constant and fluctuating adult environmental temperature on adult Anopheles gambiae s.s. survival and on the effect of larval environmental temperature on larval survival, but none on how larval temperature affects adult life-history parameters. (biomedcentral.com)
  • The data also suggest that differences between the temperatures of the larval and adult environments affects adult mosquito survival. (biomedcentral.com)
  • Environmental temperature affects Anopheles survival directly during the juvenile and adult stages, and indirectly, since temperature during larval development significantly influences adult survival. (biomedcentral.com)
  • Studying larval fish helps scientists piece together all the factors that influence fish survival. (noaa.gov)
  • If researchers could increase larval fish survival from one percent to two percent, the overall fish production rate would double, too. (noaa.gov)
  • The L. variegatus population has a broad, loosely synchronous reproductive season with the least gonad development in the spring. (ingentaconnect.com)
  • In secondary echinococcosis, larval tissue spreads from the primary site and new cysts develop after spontaneous or trauma-induced cyst rupture or after release of viable parasite material during invasive treatment procedures. (cdc.gov)
  • and the intermediate hosts are those where there's development of larval stages of this parasite. (cdc.gov)
  • The abbreviated larval development invariably passed through two zoeal stages and the benthic megalopa stage. (bas.ac.uk)
  • The larval development was completed without food supply, and food Artemia nauplii were first given after moult to the crab-I stage. (bas.ac.uk)
  • A secondary challenge in disentangling the role of pesticides in butterfly population ecology is that chemicals can act on either the larval or adult stage. (nature.com)
  • Our results suggest that the expression of DOPAL synthase is different during development and the transcriptional level reached its peak at the female white pupal stage, and DOPAL synthase was more highly expressed in the cuticle and midgut than other tissues in the adult. (biomedcentral.com)
  • Egg incubation and yolk-sac larval development was performed in three laboratory tanks (of 35 l each) at temperature condition of 21°C. For the study of ontogeny, were sampled in the embryonic stage 25 eggs every 30 min and in yolk-sac larval stage, 10 specimens every 4 h. (scialert.net)
  • In holometabolous insects, larval ecology plays a major role in determining the expression of traits in adulthood, but how ecological conditions during larval stage interact to shape adult life-history and fitness, particularly in non-model organisms, remains subject to scrutiny. (elsevierpure.com)
  • The metamorphosis experiments were done on fish reared either communally or individually and repeatedly examined to determine the relationships between age, growth and stage of development. (edu.au)
  • As they mature, the larvae undergo several stages of development, called instars, before entering the pupal stage. (whatsthatbug.com)
  • Alveolar echinococcosis is inhibited by the host from completing its development and remains in the proliferative stage indefinitely. (cdc.gov)
  • For her dissertation, she looked at how bone development influenced foraging in early stage fish in the Chesapeake Bay. (noaa.gov)
  • I. scapularis has 3 developmental stages-larva, nymph, and adult-each of which requires a blood meal for development into the next stage. (medscape.com)
  • At one time, it was used to kill mosquitoes in the immature, larval stage of development, a use that involved application of formulated product directly to bodies of water, but hlorpyrifos is no longer registered for this purpose (EPA 1986). (cdc.gov)
  • The microfilariae then enter the fly's gut and grow into the first larval stage. (medscape.com)
  • Development to the adult stage occurs in the human host. (medscape.com)
  • It will keep the infective larval stage viable for the infection of their definitive host. (cdc.gov)
  • Nematode biology and larval development of Thelazia callipaeda (Spirurida, Thelaziidae) in the drosophilid intermediate host in Europe and China. (uniba.it)
  • However, quantifying larval movement among populations remains one of the greatest challenges in marine ecology. (frontiersin.org)
  • This study has demonstrated the ability of otolith chemistry to discriminate source populations of pelagic larvae in a fully marine environment, which provides a basis to quantify larval movement between fish populations. (frontiersin.org)
  • The ability to discriminate between larvae that originated from different source populations provides a basis to quantify larval movement in marine ecosystems. (frontiersin.org)
  • Identifying the degree of larval exchange among populations is necessary to understand population dynamics and inform stock structure. (frontiersin.org)
  • However, quantifying larval movement among populations remains a significant challenge. (frontiersin.org)
  • Disagreements among government, industry, and environmental groups concerning the adequacy of best management practices to safeguard sage grouse populations have influenced speed and location of development. (doe.gov)
  • The crux of the issue lies in understanding whether sage grouse populations are impacted by land use change associated with CBNG development. (doe.gov)
  • Federal agencies have called on the scientific community to evaluate whether CBNG development impacts sage grouse populations, and if so, to develop conservation planning tools that empower government to facilitate energy development while providing sound environmental protections. (doe.gov)
  • Findings show that CBNG development is having negative effects on sage grouse populations over and above those of habitat loss caused by wildfire, sagebrush control, or conversion of sagebrush to pasture or cropland. (doe.gov)
  • Larval dispersal is one of the most important topics in marine ecology, today. (wikipedia.org)
  • The development process from larva to pupa was slowed down strikingly by feeding the first-instar larvae with chitosan/ DOPAL synthase dsRNA nanoparticles. (biomedcentral.com)
  • An important pre-requisite for the continued development of marine farming is that it is possible to replace live feed with formulated marine feed for fry and larva. (aquafeed.com)
  • Each larva grows a step as it molts its skin -- usually there are 4 size classes, one for each step, or larval instar. (unl.edu)
  • IP3-mediated Ca2+ signals regulate larval to pupal transition under nutrient stress through the H3K36 methyltransferase Set2. (ncbs.res.in)
  • Transcriptomic studies, coupled with analysis of existing ChIP-seq datasets, identified genes from larval and pupal stages that normally exhibit robust H3K36 trimethyl marks on their gene bodies and concomitantly undergo stronger downregulation by knockdown of either the intracellular Ca2+ release channel IP3R or Set2. (ncbs.res.in)
  • IP3/Ca2+ signals thus regulate gene expression through Set2-mediated H3K36 marks on select neuronal genes for the larval to pupal transition. (ncbs.res.in)
  • Females from the protein-rich larval diet had overall higher reproductive rate (i.e., eggs per day) than females from other diets, and reproductive rate decreased linearly with density for females from the protein-rich but non-linearly for females from the standard and sugar-rich diets over time. (elsevierpure.com)
  • Protein is vital for the development of their reproductive organs and the production of eggs. (insecta-inspecta.com)
  • Planktotrophic development is the most common type of larval development, especially among benthic invertebrates. (wikipedia.org)
  • The most obvious question is how increasing temperatures associated with climate change will affect mosquito longevity and the duration of the parasite's development within the mosquito, two of the most influential parameters underlying the transmission of mosquito-borne diseases. (biomedcentral.com)
  • However, temperature also shapes mosquito life-history traits that are associated with vector-competence and determines mosquito population density: a warmer environment leads to faster development and smaller adults. (biomedcentral.com)
  • The weather over the next several weeks will play a major role in mosquito development. (unl.edu)
  • Community leaders in recently flooded areas might consider appointing mosquito survey teams to keep track of local mosquito development. (unl.edu)
  • Developing a Novel Embryo-Larval Zebrafish Xenograft Assay to Prioritize Human Glioblastoma Therapeutics. (oregonstate.edu)
  • Zebrafish xenograft models hold promise for prioritizing drug development. (oregonstate.edu)
  • We have developed an embryo-larval zebrafish xenograft assay in which cancer cells are implanted in a brain microenvironment to discover and prioritize compounds that impact glioblastoma proliferation, migration, and invasion. (oregonstate.edu)
  • These results demonstrate that we have a short, relevant, and sensitive zebrafish-based assay to aid glioblastoma therapeutic development. (oregonstate.edu)
  • Although the transcriptomic alterations in larval zebrafish with embryonic atrazine exposure have been reported, neither the time at which gene expression changes occur nor the resulting proteomic changes have been investigated. (cdc.gov)
  • Roll Back Malaria was conceived as a strategy to reduce the malaria burden by building and sustaining partnerships at global and country levels, providing technical and operational support to endemic countries, stimulating research and development, and monitoring progress and outcomes. (who.int)
  • Recovery and Development, to reversing the malaria situation in Africa, and sets specific time-limited targets to achieve its goals. (who.int)
  • Malaria, together with HIV/AIDS and tuberculosis, is one of the major public health challenges eroding development in the poorest countries in the world. (who.int)
  • Larval and early juvenile development was described to the crab I instar reared under controlled conditions of temperature and food supply. (bas.ac.uk)
  • It's this unique larval feeding strategy that sets wasps apart from many other insects and highlights their complex lifecycle. (insecta-inspecta.com)
  • Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. (eol.org)
  • Here, using the polyphagous fly Bactrocera tryoni, we conducted a fully-factorial design where we manipulated larval density and larval diet (protein-rich, standard, and sugar-rich) to gain insights into how these ecological factors interact to modulate adult fitness. (elsevierpure.com)
  • As expected, a protein-rich diet resulted in faster larval development, heavier and leaner adults that were more fecund compared with standard and sugar-rich diets, irrespective of larval density. (elsevierpure.com)
  • Surprisingly, adult lipid reserve increased with larval density for adults from the sugar-rich diet (as opposed to decreasing, as in other diets), possibly due to a stress-response to an extremely adverse condition during development (i.e., high intraspecific competition and poor nutrition). (elsevierpure.com)
  • In T. maccoyii the first-feeding performance was positively affected by increasing prey density and lower turbidities and unaffected by light intensity, tank colour, turbulence, prey size and larval density. (edu.au)
  • Light intensity, tank colour, turbulence, larval density and prey density all significantly affected the feeding response in early-feeding S. lalandi. (edu.au)
  • The larval mass resembles a malignancy in appearance and behavior. (cdc.gov)
  • The morphological development of the visual apparatus of T. maccoyii and S. lalandi is described by histological analysis and microspectrophotometry (MSP) and the visual ability of larvae is examined through behavioural experimentation. (edu.au)
  • Captive breeding, spawning and larval development of endangered gastropod, horse conch, Pleuroploca trapezium (Linnaeus, 1758) was studied and reported from Thoothukudi, Southeast coast of India for the first time. (org.in)
  • The present study aimed at performing an ecotoxicological screening of 15 NADESs using an extensive set of marine and freshwater bioassays, based on different endpoints: immobilization of the crustacean Daphnia magna, growth inhibition of Raphidocelis subcapitata and of Phaeodactylum tricornutum, larval development alterations on the serpulid Ficopomatus enigmaticus and bioluminescence inhibition of Aliivibrio fischeri. (easychair.org)
  • Summer flounder, Paralichthys dentatus L., show variance in total length as they progress through larval development and metamorphosis, both in commercial aquaculture hatcheries and in research facilities. (edu.au)
  • In order to document the magnitude of this variation and to try to understand the basis for it, we conducted a series of experiments during (a) the larval period and (b) the process of metamorphosis. (edu.au)
  • During the metamorphosis trials, we found that rates of development and absolute growth in summer flounder are positively correlated. (edu.au)
  • Functional analysis of these new alleles , including in vivo imaging, demonstrates that Mib2 plays an additional important role in the development of adult thorax muscles , particularly in maintaining the larval templates for the dorsal longitudinal indirect flight muscles during metamorphosis. (bvsalud.org)
  • After 30 dph, though most of the pre-juveniles settled and crawled at the bottom of the rearing tank, the presence of active velum indicated that the competency to metamorphosis for the development of juvenile was not fully attained and complete mortality occurred. (org.in)
  • Marine larval ecology is the study of the factors influencing dispersing larvae, which many marine invertebrates and fishes have. (wikipedia.org)
  • The registration of transgenic corn with resistance to corn rootworm larval feeding offers a viable alternative to insecticides for managing the most economically important insect pests of corn. (usda.gov)
  • While this reduction is partly due to the indirect effect of habitat loss (i.e., large fields with frequent herbicide inputs have fewer floral resources), intensification can also have direct effects by exposing individuals to pesticide residues that increase mortality or impair development. (nature.com)
  • High early mortality and larval malformations have hindered the successful production of quality juveniles. (edu.au)
  • Moreover, the extent of CBNG development explained lek inactivity better than power lines, pre-existing roads, or West Nile virus (WNV) mortality. (doe.gov)
  • Shull (1997) also demonstrated that this occurs by larval settlement, bedload transport and by burrowing. (marlin.ac.uk)
  • Ascaris larvae, when getting in contact with the epithelium, showed induction of genes that orchestrate motor activity and larval development, such as myosin, troponin, myoglobin, and protein disulfide isomerase 2 (PDI-2). (fu-berlin.de)
  • Normal development requires a precise and integrated pattern of expression of all these genes, though how this is achieved is unclear. (biologists.com)
  • Monarch lethal and sub-lethal responses were tracked over their complete development, from early instar larvae to adult death. (nature.com)
  • A vigorous inflammatory and fibrous tissue reaction usually surrounds the larval mass. (cdc.gov)
  • With the recent commercialization of transgenic rootworm-resistant maize with high levels of antibiosis to larval feeding, the larval biology of western corn rootworm, Diabrotica virgifera virgifera LeConte, on hosts beyond maize has become an important topic for which limited data exist. (usda.gov)
  • Abstract from Annual Larval Fish Conference, Os, Norway. (dtu.dk)
  • We then examined the relative expression of the two IGFs in unfertilized eggs, during different stages of embryogenesis, and in early larval stages of rabbitfish by a semiquantitative reverse transcription-polymerase chain reaction. (seafdec.org)
  • Excreted larvae are taken up by intermediate hosts (land snails and slugs) and paratenic or transport hosts (hosts that are not required for the parasite's development but that can transmit infection to humans). (msdmanuals.com)
  • Homozygous mutations of amd-r resulted in embryo death during early development stages [ 18 , 19 ]. (biomedcentral.com)
  • Rearing conditions experienced during early larval culture are critical for the production of high quality seed stock. (edu.au)
  • We wanted to examine whether this is also true in fish and whether IGF-I and IGF-II are differentially regulated during different stages of embryogenesis and early larval development in rabbitfish. (seafdec.org)
  • The lack of an association between larval occurrence and recruitment (as interpreted from size-frequency patterns) that was seen for the Echinometra spp. (ingentaconnect.com)
  • After the onset of CBNG development in 1997, the pace of development increased rapidly. (doe.gov)
  • it is unclear whether larval contamination of vegetables (eg, in slime from snails or slugs that crawl on the food) can cause infection. (msdmanuals.com)
  • Once hatched, larval development proceeds rapidly. (unl.edu)
  • Link to all direct and indirect annotations to larval development. (planteome.org)
  • The thyroid hormone system plays a major role in larval development, growth, and metabolism in fish. (umanitoba.ca)
  • From 2002, the development of WHO specifications follows the New Procedure , described in the "Manual for development and use of FAO and WHO specifications for chemical pesticides. (who.int)
  • In the present study the embryonic and yolk-sac larval growth and development of common sharpnout sea bream Diplodus puntazzo (Cetti, 1777), are described and illustrated. (scialert.net)
  • In the present study, described the embryonic and yolk-sac larval ontogeny (growth and development), of common sharpnout sea bream ( Diplodus puntazzo ), with aim of both giving solutions on commercial rearing systems and contribution to ichthyoplankton studies. (scialert.net)
  • During two larval trials, significant events occurred around 20‚Äö-22 DAH: increased variability in size among offspring from one set of parents, and increased growth without increased variability among offspring from another set of parents. (edu.au)
  • Larval recovery and growth were recorded. (usda.gov)
  • However, larvae survived and developed on most grasses tested and initial development on grassy corn field weeds followed by movement to transgenic corn could be a mechanism for individual larvae to overcome the transgenic protein. (usda.gov)
  • The associated company, EWOS Innovation, with 65 employees, controls its extensive research and development work from its main base in Dirdal outside Stavanger. (aquafeed.com)
  • Co-operation between EWOS and the Odd Berg Group (OBG) will initially take the form of common technological development and a sales and marketing agreement that makes EWOS responsible for the worldwide distribution of AgloNorse. (aquafeed.com)
  • In order to achieve the best possible competitive position for themselves, the partners have chosen to establish a long-term and binding relationship that, among other things, will ensure a quick continued development of production. (aquafeed.com)