Wszystkie pola: egg - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The rate of egg laying and hatching of the slug Arion lusitanicus Mabille, a pest of arable crops
Autorzy:: Kozlowski, J
Sionek, R.
Powiązania:: https://bibliotekanauki.pl/articles/65197.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Gastropoda
pest
egg hatching
arable crop
Arion lusitanicus
Arionidae
slug
egg laying
Pulmonata
Opis:: The experiments were carried out in Rzeszów, a region of the Arion lusitanicus mass occurrence, and also in Poznań. The studies were performed under field conditions, in isolators dug inio the ground. It was found that the slug began egg laying by the end of the first decade of August. The period of egg laying, depending on meteorological conditions, lasted for 2-3.5 months. The eggs were laid in clutches, each containing from 5 to 193 eggs. Most of eggs laid in August hatched before winter. For the eggs laid in mid-August the period of hatching was shorter than those laid at the turn of August/September, and the percentage of hatched eggs was lower. Eggs deposited at later dates (in September-November) did not hatch before winter.
W latach 1997-1999 prowadzono badania dotyczące terminu składania i wylęgania jaj Arion lusitanicus. W okresie jesienno-zimowym 1999 roku obserwowano także tempo wylęgania jaj złożonych w różnych terminach, procent wylęgłych jaj i długość okresu wylęgania. Doświadczenia założono w Rzeszowie, w rejonie masowego występowania ślimaka, oraz w Poznaniu. Badania prowadzono w warunkach polowych, w izolatorach wkopanych w ziemię. Stwierdzono, że ślimak rozpoczynał składanie jaj pod koniec pierwszej dekady sierpnia. Okres składania jaj w zależności od warunków meteorologicznych trwał od 2 do 3,5 miesiąca. Jaja były składane w złożach - od 5 do 193 jaj w jednym złożu. Do końca roku wylęgało się około 40% jaj. W badaniach jesienno-zimowych w 1999 roku stwierdzono, że większość jaj złożonych w sierpniu wylęgła się przed zimą. Dla jaj złożonych w połowie sierpnia okres wylęgu jaj był krótszy niż dla jaj złożonych na przełomie sierpnia i września, a procent wylęgłych jaj był niższy. Jaja złożone w późniejszych terminach (wrzesień-listopad) nie wylęgały się przed zimą.
Źródło:: Journal of Plant Protection Research; 2000, 40, 2
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: The process of aphid egg-laying and the little known role of the Coccinellidae in aphid egg destruction in Poland – preliminary results
Autorzy:: Lubiarz, M.
Cichocka, E.
Powiązania:: https://bibliotekanauki.pl/articles/66255.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: No detailed studies have been conducted in Poland with regard to aphid eggs or egg survival in particular. So far, no studies have been conducted concerning the role of ladybird beetles in reducing the number of aphid eggs in spring, before the development of leaves, and in autumn, after the leaves have been shed. At these times, other developmental stages of aphids are unavailable as food for the ladybirds. The paper presents the preliminary results of a three-year study on the process of aphid egg-laying (especially Chaetosiphon tetrarhodum, Macrosiphum rosae, Metopolophium dirhodum, and Maculolachnus submacula). The paper also deals with the little known role of ladybirds in aphid egg destruction. Research was conducted in Otrębusy (Western Mazovia), Poland, in the years 2008-2010, on the rugosa rose and on the dog rose. In the years 2011-2013, in Otrębusy, the occurrence of M. submacula was also observed on the ornamental grandiflora rose. Furthermore, in the years 2003-2004, observations were conducted on the pedunculate oak in Polesie National Park and in the town of Puławy (Lublin Region), Poland. The observations which took place in Puławy focused on egglaying of aphids representing the genera Phylloxera and Lachnus. The study investigated aphid oviposition sites. Data was collected on the number of aphid eggs noted on the studied plants. The study also showed, that sometimes winter eggs of aphids could provide nutrition for ladybirds. This was especially true in autumn when ladybird beetles were preparing for hibernation.
Źródło:: Journal of Plant Protection Research; 2014, 54, 3
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Ceramic membrane fouling in ultrafiltration process of chicken egg white aqueous solution
Autorzy:: Borysiak, M.
Gabruś, E.
Powiązania:: https://bibliotekanauki.pl/articles/185007.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ultrafiltration
ceramic membrane
chicken egg white
fouling
membrane transport resistance
ultrafiltracja
membrana ceramiczna
Opis:: This paper presents an experimental study on chicken egg white solution ultrafiltration, where membrane fouling has been the main point of concern. Separation process has been performed with a 150 kDa tubular ceramic TiO2/Al2O3 membrane. The operating parameters have been set as follows: transmembrane pressure 105–310 kPa, cross-flow velocity 2.73–4.55 m/s, pH 5 and constant temperature of 293 K. Resistance-in-series model has been used to calculate total resistance and its components. The experimental data have been described with four pore blocking models (complete blocking, intermediate blocking, standard blocking and cake filtration). The results obtained show that the dominant fouling mechanism is represented by cake filtration model.
Źródło:: Chemical and Process Engineering; 2018, 39, 3; 295--308
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Freezability and fertility of frozen-thawed boar semen supplemented with ostrich egg yolk lipoproteins
Autorzy:: Fraser, L.
Zasiadczyk, Ł.
Strzeżek, J.
Strzeżek, R.
Karpiesiuk, K.
Powiązania:: https://bibliotekanauki.pl/articles/2087726.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: boar
egg yolk lipoproteins
cryopreservation
artificial insemination
Źródło:: Polish Journal of Veterinary Sciences; 2018, 21, 2; 255-263
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Interactions of ostrich egg yolk lipoproteins with seminal plasma of fractionated ejaculates and their effects on post-thaw boar semen quality
Autorzy:: Fraser, L.
Zasiadczyk, Ł.
Strzeżek, J.
Kordan, W.
Mańkowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/2087484.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: boar semen
ejaculate fractions
egg yolk lipoproteins
cryopreservation
Źródło:: Polish Journal of Veterinary Sciences; 2019, 3; 463-473
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: A preliminary note of egg-case oviparity in a Devonian placoderm fish
Autorzy:: Carr, R. K.
Jackson, G.
Powiązania:: https://bibliotekanauki.pl/articles/139073.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Devonian
Famennian
Cleveland Shale
Ohio
USA
Placodermi
Arthrodira
oviparity
egg case
Chondrichthyes
dewon
famen
ryby pancerne
tarczowce
plakodermy
zawiasowce
jajorodność
ryby chrzęstnoszkieletowe
ryby chrzęstne
chrzęstniki
Opis:: Six enigmatic fossils from the Famennian (Devonian) Cleveland Shale in Ohio, U.S.A., are interpreted here as arthrodiran (Placodermi) egg cases. Recognition as egg cases is confirmed based on the observation of layered collagen fibers. The presence of a tuberculated bone fragment preserved within one case confirms a vertebrate source. The nature of the tubercles and the unique morphology of the egg cases supports the interpretation of an arthrodiran source. Reports of Devonian egg cases are limited to either assumed chondrichthyan producers or a putative ‘egg sac’ with a morphology atypical for any vertebrate. The Cleveland Shale egg cases thus represent the first record for a non-chondrichthyan producer. Among placoderms, behaviors of a pelagic life style with obligate nesting sites, reef fishes with live birth, and estuarine and fluvial nurseries, along with eggcase oviparity testifies to the diversity of reproductive strategies. As with modern fishes these strategies may be ecologically driven and the derived and variable reproductive biology of extant chondrichthyans is actually a primitive condition among gnathostomes. One consequence of the diversity of reproductive strategies (dependent on the topology of relationships) is the independent origin of internal fertilization within placoderms, possibly suggesting external fertilization as the primitive gnathostome reproductive mode.
Źródło:: Acta Geologica Polonica; 2018, 68, 3; 381-389
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Egg laying and caterpillar hatching dynamics of Ostrinia nubilalis Hbn. on maize (Zea mays L.) in south-eastern Poland
Autorzy:: Beres, P.K.
Powiązania:: https://bibliotekanauki.pl/articles/65190.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: During the study years, the European corn borer (ECB) (Ostrinia nubilalis Hbn.) females began depositing eggs on maize plants between the last ten days of June and the first ten days of July. A maximum number of eggs on plants was found at the beginning of the second ten days of July and at the beginning of the third ten days of July. The last egg clusters were recorded in August. During the five years of the study period, the female oviposition period lasted from 4.5 to 8 weeks. The shortest oviposition period took place during the warm and dry years, while the longest period was during the rainy and relatively cold years. During the study years, within the entire flight period, O. nubilalis females deposited from 1,564 to 3,393 eggs on 200 observed plants. The average number of eggs per cluster in the study years was from 10.0 to 15.2. The beginning of caterpillar hatching, based on the observation of empty egg clusters, was recorded in the last ten days of June or in the first and second ten days of July. Mass hatching of the caterpillars was observed in the second and third ten days of July, and only in 2004 was it in the first ten days of August. The last empty egg clusters were recorded in the second and in the third ten days of August.
Źródło:: Journal of Plant Protection Research; 2012, 52, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Distribution of Ostrinia nubilalis Hbn. egg clusters on maize plants in south-eastern Poland in 2004-2008
Autorzy:: Beres, P.K.
Powiązania:: https://bibliotekanauki.pl/articles/66540.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The selected bionomic aspects of the European corn borer (Ostrinia nubilalis Hbn.) on maize (Zea mays L.) were studied between 2004-2008 in Krzeczowice (49°59' N; 22°27' E); the south-eastern region of Poland. These aspects include the reproductive behaviour as related to the location of egg clusters oviposited by females on various parts of maize plants. Information about the egg cluster distribution on maize plants may help farmers and extension staff establish the optimal period for undertaking chemical or biological control intervention. The highest number of egg clusters were recorded in the central parts of plants, on fifth to seventh leaves, and on the third and fourth internodes. The majority of eggs were oviposited on the bottom side of leaves in the middle part by the midrib.
Źródło:: Journal of Plant Protection Research; 2012, 52, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Egg apparatus in sexual and apomictic species of Taraxacum: Structural and immunocytochemical aspects of synergid cells
Autorzy:: Musial, K.
Koscinska-Pajak, M.
Powiązania:: https://bibliotekanauki.pl/articles/19830.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: The paper reports a comparative study of the female gametophyte and especially synergid structure in sexual and apomictic dandelions. We analyzed diploid sexually reproducing Taraxacum linearisquameum (2n = 2x = 16) and two triploids, T. alatum and T. udum (2n = 3x =24), with autonomous embryo and endosperm development. There were no observed differences in the organization of the mature megagametophyte between the examined species. Both meiotically reduced and diplosporous embryo sacs showed typical polarity of the egg apparatus cells, together with development of a filiform apparatus in the synergids, but immunocytochemical analyses indicated that microtubules form longitudinal brush-like bundles adjacent to the filiform apparatus in the synergids of the sexual T. linearisquameum. This arrangement of cytoskeletal elements is similar to the configuration described in other amphimictic plants. The synergids of the apomictic T. alatum and T. udum show a uncharacteristic and relatively weak cytoskeleton with no brush-like bundles. We discuss the role of synergids in autonomous apomicts.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2013, 55, 1
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Production and characterization of egg yolk antibodies against bovine alimentary tract pathogens
Autorzy:: Sitnik, O.
Jawor, P.
Kopec, W.
Skiba, T.
Stefaniak, T.
Powiązania:: https://bibliotekanauki.pl/articles/32193.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Aim of the study was to evaluate the effect of immunization of hens with bovine vaccines (C, R, T) on the course of IgY antibodies production against selected bovine E.coli strains, rota- and coronaviruses in egg yolk in farm conditions. The hens (40 individuals per group) were vaccinated twice, subcutaneously in four week interval and eggs were harvested once a week. Control group consisted of eggs sampled from non-vaccinated hens located in neighbouring cages. The antibody activity was measured by ELISA. All used vaccines induced the rise of IgY antibody in egg yolks. Based on the duration and the highest level of IgY antibody against bovine alimentary tract pathogens C vaccine was further used in next two trials for vaccination of 1000 hens each time. Double immunization seems to be enough in mounting response against examined pathogens for several weeks. Immunization with C vaccine allowed to harvest eggs with satisfactory levels of E.coli, rotavirus and coronavirus IgY antibodies which may be used to evaluate their protective effect by oral administration in calves.
Źródło:: Polish Journal of Veterinary Sciences; 2013, 16, 2
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Production and characterization of egg yolk antibody (IgY) against recombinant VP8 - S2 antigen
Autorzy:: Nasiri, K.
Nassiri, M.R.
Tahmoorespur, M.
Haghparast, A.
Zibaee, S.
Powiązania:: https://bibliotekanauki.pl/articles/30350.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: Bovine Rotavirus and Bovine Coronavirus are the most important causes of diarrhea in newborn calves and in some other species such as pigs and sheep. VP8 subunit of rotavirus is the major determinant of the viral infectivity and neutralization. Spike glycoprotein of coronavirus is responsible for induction of neutralizing antibody response. Studies showed that immunoglobulin of egg yolk (IgY) from immunized hens has been identified to be a convenient source for specific antibodies for using in immunotherapy and immunodiagnostic to limit the infections. In this study, chimeric VP8-S2 gene was designed using by computational techniques. The chimeric VP8-S2 gene was cloned and sub-cloned into pGH and pET32a (+) vectors. Then, recombinant pET32a-VP8-S2 vector was transferred into E. coli BL21 CodonPlus (DE3). The expressed protein was purified by Ni-NTA chromatography column. Hens were immunized with the purified VP8-S2 protein three times. IgY was purified from egg yolks using polyethylene glycol precipitation method. Activity and specificity of anti-VP8-S2 IgY were detected by dot-blotting, Western-blotting and indirect ELISA. We obtained anti-VP8-S2 IgY by immunizing hens with the recombinant VP8-S2 protein. The anti-VP8-S2 IgY was showed to bind specifically to the chimeric VP8-S2 protein by dot-blotting, Western-blotting analyses and indirect ELISA. The result of this study indicated that such construction can be useful to investigate as candidates for development of detection methods for simultaneous diagnosis of both infections. Specific IgY against the recombinant VP8-S2 could be recommended as a candidate for passive immunization against bovine rotavirus and bovine coronavirus.
Źródło:: Polish Journal of Veterinary Sciences; 2016, 19, 2
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: The study on development cycle of Sitona humeralis in South-Eastern Poland
Autorzy:: Pisarek, M
Powiązania:: https://bibliotekanauki.pl/articles/65243.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Sitona humeralis
Polska
life cycle
pupa stage
larva
development cycle
egg
Opis:: Sitona humeralis Steph. has one generation per year. Adults survive through the winter. Full life cycle from egg to adult lasts 54 days on average, including about 10 days for embryo, 30 days for larval and 14 days for pupa stage.
Sitona humeralis daje jedno pokolenie w ciągu roku. Zimuje owad dorosły. Pełny rozwój od jaja do osobnika doskonałego wynosi średnio 54 dni, w tym okres embrionalny około 10 dni, larwalny - 30 dni, poczwarki - 14 dni.
Źródło:: Journal of Plant Protection Research; 2001, 41, 1
1427-4345
Pojawia się w:: Journal of Plant Protection Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: Supplementation of different concentrations of Orvus Es Paste (OEP) to ostrich egg yolk lipoprotein extender improves post-thaw boar semen quality
Autorzy:: Fraser, L.
Jasiewicz, E.
Kordan, W.
Powiązania:: https://bibliotekanauki.pl/articles/2087957.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: This study aimed to compare post-thaw quality of boar semen following freezing in an ostrich egg yolk lipoprotein (LPFo) extender supplemented with 0%, 0.25% and 0.50% Orvus Es Paste (OEP). Sperm assessments included total motility (TMOT), mitochondrial function (MF), plasma membrane integrity (PMI) and acrosome integrity (normal apical ridge, NAR). Considerable variations among boars and OEP treatments had a significant effect (P < 0.001) on post-thaw sperm characteristics. It was observed that post-thaw sperm characteristics were significantly compromised in semen samples frozen in the absence of OEP. By contrast, lactose-LPFo-glycerol extender supplemented with either 0.25% OEP or 0.50% OEP markedly enhanced post-thaw sperm characteristics. In all boars, there were no marked differences in post-thaw sperm TMOT between the freezing extenders supplemented with 0.25% and 0.50% OEP. However, a decline in the percentage of post-thaw motile spermatozoa was more pronounced in the extender supplemented with 0.50% OEP following a 120-min incubation period. Furthermore, the proportions of frozen-thawed spermatozoa with MF, PMI and NAR acrosomes varied significantly among the boars in the OEP-supplemented extenders. The findings of this study indicate that different OEP concentrations, in the presence of ostrich egg yolk lipoproteins, could have varying effects on post-thaw sperm survival.
Źródło:: Polish Journal of Veterinary Sciences; 2014, 17, 2; 225-230
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Comparison of Fecal Egg Counts and ELISA for the diagnosis of Dicrocoelium Dendriticum infection
Autorzy:: Naeemipour1, M.
Hashemitabar, Ch.R.
Dastjerdi, K.
Jamshidian Mojaver, M.
Mohammadi, H.R.
Powiązania:: https://bibliotekanauki.pl/articles/32321.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: From economical point of view, Dicrocoelium Dendriticum (D. dendriticum) causes a lot of damages to the livestock industry annually. So, the rapid diagnosis of infection is very important. The diagnosis is based on egg per count of feces (EPG) test because detection according to clinical symptoms is difficult. Since EPG is not accurate and sensitive, the serological methods become important for the diagnosis of this parasite as they are more accurate in comparison to EPG test and they are able to diagnose infection in a short time. In this study, somatic and Excretory-secretory antigens (EsAg) were isolated. The ELISA test was set up according to positive and negative sera and the results which were obtained compared to those obtained by the EPG test. The prevalence of infection in 550 samples by ELISA and EPG methods were 56% and 7% respectively, which shows the significant difference between these methods in examining the rate of infection. Based on the results, the specificity and sensitivity in ELISA test were 95% and 94%, respectively. The results showed that the ELISA is a more reliable test in comparison to EPG test for the rapid diagnosis of D. dendriticum infection.
Źródło:: Polish Journal of Veterinary Sciences; 2016, 19, 3
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Quality parameters and fertility of ram semen cryopreserved in egg yolk and soybean lecithin supplemented extenders
Autorzy:: Gogol, P.
Bryła, M.
Trzcińska, M.
Bochenek, M.
Powiązania:: https://bibliotekanauki.pl/articles/2087594.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ram semen
cryopreservation
soybean lecithin
sperm quality
fertility
Źródło:: Polish Journal of Veterinary Sciences; 2019, 1; 177-179
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "egg" wg kryterium: Wszystkie pola

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język