2) Radar observations indicated that most of the moths' migration took place at a height of 600 m, often in a dense layer which formed at heights of 350-800 m. (3) Analyses of adult ovarian development and larval haplotypes showed third-generation larvae were progeny of both locally produced progeny and immigrant moths. (bioone.org)
Embryonic6
Courtship behaviour, captive breeding, embryonic and larval developments of Nemateleotris decora and its rearing with suitable live feed were described. (researchgate.net)
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)
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 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)
Notably, the ontogeny of sea lamprey hemoglobins essentially recapitulates their phylogeny, with the embryonic hemoglobins emerging first, followed by the evolution of larval and adult hemoglobins. (biomedcentral.com)
Rearing was carried1
Larval rearing was carried out in 250-L rectangular tanks using phytoplanktons Nannochloropsis oculata and Chlorella salina (1:1 proportion at 1-5 × 106 cells ml− 1), along with different combinations of live micro zooplanktons: Diet I (Brachionus rotundiformis from 1 to 7 dph and Brachionus plicatilis from 8 to 18 dph), Diet II (ciliates Euplotes sp. (researchgate.net)
Populations10
Edmonton's heavy summer rainfall, combined with its gently rolling topography of poorly draining, clay-rich soils, creates perfect conditions for the widespread development of huge populations of this particular species. (edmonton.ca)
Does White Clover (Trifolium repens) Abundance in Temperate Pastures Determine Sitona obsoletus (Coleoptera: Curculionidae) Larval Populations? (frontiersin.org)
To determine if host plant abundance determined the size of clover root weevil (CRW) Sitona obsoletus larval populations, a study was conducted over 4 years in plots sown in ryegrass ( Lolium perenne ) (cv. (frontiersin.org)
There was a significant decline in larval populations between 2012 and 2013, but spring populations were relatively uniform thereafter. (frontiersin.org)
Analysis relating spring (October) larval populations to % white clover measured in each plot in autumn (April) found the 2012 larval population to be statistically significantly larger in the ryegrass 6 kg/ha plots than 30 kg/ha plots. (frontiersin.org)
Thereafter, sowing rate had no significant effect on larval populations. (frontiersin.org)
From 2013 to 2015, spring larval populations had a negative relationship with the previous autumn % white clover with the relationship highly significant for the 2014 data. (frontiersin.org)
When CRW larval populations in spring 2013 to 2015 were predicted from the 2013 to 2015 autumn % white clover, respectively, based on their positive relationship in 2012, the predicted densities were substantially larger than those observed. (frontiersin.org)
Conversely, when 2015 spring larval data and % clover was regressed against 2012-2014 larval populations, observed densities tended to be higher than predicted, but the numbers came closer to predicted for the 2013 and 2014 populations. (frontiersin.org)
To reduce the risk of infected mosquitoes causing additional malaria cases, insecticide is sprayed to suppress the populations of adult mosquitoes and to control larval habitats. (cdc.gov)
Embryo2
Larval development is one of many critical phases in the culture of most species in aquaculture because many different transformations occur from embryo to juvenile, and this is the period in which, by far, the most deaths are registered. (was.org)
This process gets rid of unneeded cells and is particularly important for "sculpting" tissue and organ structure during development of the embryo (or larval metamorphosis in insects), but may occur at any time even in adult cells when a tissue needs to be remodeled. (agemed.org)
Habitats1
Penaeus monodon mature and breed only in tropical marine habitats and spend their larval, juvenile, adolescent and sub-adult stages in coastal estuaries, lagoons or mangrove areas. (thefishsite.com)
Eggs4
In this species, flooded eggs hatch when the water temperature exceeds a critical point (about 10°C). Larval development may take as little as 5 days, allowing this species to exploit extremely temporary bodies of water. (edmonton.ca)
Sperm and eggs are released into the environment where fertilization and larval development occur. (noaa.gov)
Until the mid- 1800s, many naturalists supported a theory of development called epigenesis, which held that the eggs of organisms were undifferentiated, but had a developmental potential which could be directed by certain external forces. (encyclopedia.com)
Transmission occurs when people suffering from schistosomiasis contaminate freshwater sources with their excreta containing parasite eggs which hatch in water. (who.int)
Stages5
These 6 groups share general similarities in their life cycles including the egg, four larval stages, a pupa and the adult. (edmonton.ca)
Cool water temperatures promote relatively slow larval development, requiring as long as a month for completion of the aquatic stages. (edmonton.ca)
In Coquillettidia , larval stages over-winter restrict development to very permanent water bodies. (edmonton.ca)
ProHeart 12 eliminates the larval and adult stages of A. caninum and U. stenocephala present at the time of treatment. (nih.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)
Outbreaks2
While insufficient to accurately predict the risk of human infection, dengue vector surveillance employs several entomological indicators that have been developed to assess the risk of outbreaks occurring. (who.int)
Although these are the first occurrences of U. S. acquired mosquito transmitted malaria in 20 years, at least 28 small outbreaks of malaria in eight states have occurred since 1980. (cdc.gov)
Species2
Changes in the distribution of simuliid species and their disease transmission pattern may occur in response to climatic and environmental factors. (scirp.org)
The related concept of Longevity Determination , however, is the result of a species-specific genomic expression during early development that positions the somatic tissues of an organism to survive long after its reproductive period has been completed. (agemed.org)
Coastal2
Larval development occurs in coastal waters. (maryland.gov)
In the Middle Atlantic Bight, where the resource is extensive and an active fishery exists, this mactrid occurs from the coastal beach zone to depths of over 60 m. (noaa.gov)
Reproductive2
In conclusion, our results show that abiotic factors strongly influence the temporal pattern of reproductive activity and larval assemblages of both L. grossidens and P. platana in Peri Lagoon, Brazil. (scielo.br)
During the development from the parasitic to the reproductive adult, the composition of hemoglobin changes again, with a massive increase of chain aHb1. (biomedcentral.com)
Migration1
Strong southwesterly winds occurred during the peak migration period. (bioone.org)
Severe2
Under severe larval infestations, a decrease in percent foliar N levels in spring can occur, with subsequent reductions in herbage dry matter (DM) yield levels ( Gerard, 2002 ). (frontiersin.org)
Between 50 and 100 million cases occur each year, including about 500,000 of the really severe hemorrhagic fever type, and the numbers continue to increase. (cdc.gov)
Hatch1
Winter is passed in the egg stage and larval hatching requirements distinguish two types: those that hatch in spring and those that hatch later in the summer. (edmonton.ca)
Adult stage1
Development to the adult stage occurs in the human host. (medscape.com)
Stage4
Later, Salthe and Duellman (1973), in the context of amphibians, defined RM as a set of characters including oviposition site, ovum and clutch characteristics, rate and duration of development, stage and size of hatchlings, and type of parental care, if any. (froglife.org)
At this stage of development, the embryos were feeding with enzymes that Structural Changes of the Digestive Tract of Barred Sand Bass Paralabrax nebulifer During the Larval Period O. Rosales-Navarro, M.O. Rosales-Velázquez and J.L. Ortiz-Galindo FIGURE 1. (was.org)
Consideration can then be given to developing regulations, guidelines, or codes of practice to control any aspect of these substances' life cycle, from the research and development stage through manufacture, use, storage, transport, and ultimate disposal. (canada.ca)
The microfilariae then enter the fly's gut and grow into the first larval stage. (medscape.com)
Pupae2
Speed of larval development to pupae is dependent on temperature and humidity. (capcvet.org)
The size of Simulium pupae depends upon the availability of food material during larval development. (scirp.org)
Establishment1
Our group, the Department of Technologies Development within CIMAR-IPN, works in the establishment of adequate food protocols for larval fish, in this case for barred sea bass. (was.org)
20021
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 Pesticides. (who.int)
Significant2
When the larval load is significant, these microvasculature changes cause cardiovascular, lung, and central nervous system (CNS) pathology. (medscape.com)
Several groups of patients become symptomatic, and, within these subpopulations, significant morbidity and mortality occur. (medscape.com)
Peak1
Larval sampling was carried out in spring (October) when larval densities are near their spring peak at Lincoln (Canterbury, New Zealand) with % clover measured in autumn (April) and spring (September) of each year. (frontiersin.org)
Worms1
Maturation of the male and female worms occurs and mating follows. (medscape.com)
Common2
Common sites of outdoor larval development are cool, shady areas or areas of shifting shade where pets rest. (capcvet.org)
Viviparity is common in caecilians, but also occurs in a few frogs and salamanders. (froglife.org)
Water4
Report any standing bodies of water that occur within residential areas by contacting 311. (edmonton.ca)
Closed system larval culture, checking water quality parameters. (was.org)
People become infected when larval forms of the parasite - released by freshwater snails - penetrate the skin during contact with infested water. (who.int)
Increasing population size and the corresponding needs for power and water often result in development schemes, and environmental modifications facilitate transmission. (who.int)
Food1
There is a high priority during this process to make adequate changes in food quality and size for the many transformations that occur during larval development, in order to meet nutritional requirements. (was.org)
Effect1
Physical conditions of the substrata have a pronounced effect in limiting larval distribution. (scirp.org)
Environmental1
Delayed emergence occurs when there are no appropriate environmental stimuli. (capcvet.org)
Organism2
Other naturalists supported a theory of development called preformationism, which held that the entire complex morphology of a mature organism is present in miniature form in the egg, a developmental form called the homunculus. (encyclopedia.com)
Biologists also rejected preformationism, since studies of cytology and embryology clearly showed that development is much more than the simple growth of a preformed organism. (encyclopedia.com)
Root1
This occurs mostly in animal burrows, rock piles and root cellars. (edmonton.ca)
Fish1
Sex reversal generally occurs between the sizes, 9½-13 inches: most fish 8 inches and below are female. (maryland.gov)
Cases1
In all cases it is only the adult female that feeds on blood, which is used as a source of protein for egg development. (edmonton.ca)
Activity1
In the Middle Atlantic Bight, spawning occurs primarily during summer, although some activity has also been documented in autumn (Ropes 1968). (noaa.gov)
Genes2
During development, humans and other jawed vertebrates (Gnathostomata) express distinct hemoglobin genes, resulting in different hemoglobin tetramers. (biomedcentral.com)
Thus, we know that the simple cells of an egg are preformed in the sense that they contain a preformed instruction set for development which is encoded in their genes. (encyclopedia.com)
Daily1
Larval development was monitored daily throughout the experiment (Figure 3). (was.org)
Disease1
ProHeart 12 prevents the development of heartworm disease caused by D. immitis for 12 months. (nih.gov)
Expression1
Thus modern developmental biology views development as the expression of a preformed genetic program which controls the epigenetic development of an undifferentiated egg into a morphologically complex adult. (encyclopedia.com)
Life2
Based on these considerations, it has been concluded that dichloromethane occurs at concentrations that may be harmful to the environment, and that may constitute a danger in Canada to human life or health. (canada.ca)
It has been concluded that dichloromethane occurs at concentrations that do not constitute a danger to the environment on which human life depends. (canada.ca)
Early1
Early philosophers from many cultures, including the ancient Greeks, thought about the development of the world, and eventually of living things. (encyclopedia.com)
Result1
As a result, 12 - 17 subspecies have been proposed, with the majority of the variation occurring in the Iberian Peninsula (Burgon et al. (amphibiaweb.org)