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Tytuł:
Insights on Short-term Blooms of Planktonic Ciliates, Provided by an Easily Recognised Genus: Cyrtostrombidium
Autorzy:
Bulit, Celia
Macek, Miroslav
Montagnes, David J. S.
Powiązania:
https://bibliotekanauki.pl/articles/763531.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Bloom, conjugation, parasitism, patch, population dynamics, lagoon
Opis:
Planktonic ciliates occasionally form brief rapid increases in numbers (blooms) that can be trophically important. Although model simulations and mesocosm studies indicate that blooms occur over 10 to 20 days, field data are rarely suffi ciently detailed to reveal their occurrence and demise. Our data (collected over 57 weeks across a coastal lagoon) offer insights into the population dynamics of a single species, place these in the context of the entire ciliate assemblage, and provide guidance on what should continue to be examined. Specifically, to evaluate population dynamics we examine two species of Cyrtostrombidium, characterise temporal and spatial variation of their abundance, and relate these to abiotic phenomena and biological factors. This is also the first report of Cyrtostrombidium in a tropical coastal lagoon. Collectively our analysis reveals key aspects of the dynamics of this genus: 1) small-scale peaks in abundance are ~30 m in size and can persist for ~10–30 days, reaching a maximum of 100 cells ml–1; 2) these increases are driven by biotic factors (revealed through autocorrelation analysis); 3) long-term trends are driven by the shift between dry and rainy seasons and by the periods of isolation of lagoon from the sea (revealed through multiple regression analysis); 4) blooms may at times control primary production; 5) conjugation, an ecologically important event, may be associated with blooms (at times 9% of population was conjugating); and 6) dinoflagellate parasitism, poorly described in oligotrichs, is potentially important in population demise. These results both reflect on how ciliates may behave in short-term events and should encourage the continued need for detailed observations of field samples at a high taxonomic resolution.
Źródło:
Acta Protozoologica; 2013, 52, 1
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problems of parasitism of some species of Branchiobdella Odier, 1823 [Oligochaeta] on crayfish Astacus astacus [L.] and Pontastacus leptodactylus [Esch.]
Autorzy:
Wierzbicka, J.
Smietana, P.
Powiązania:
https://bibliotekanauki.pl/articles/838035.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Pontastacus leptodactylus
crayfish
Astacus astacus
Oligochaeta
parasitism
Branchiobdella
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parasitic halacarid mites (Acari, Halacaridae): survey on literature
Autorzy:
Chatterjee, Tapas
Powiązania:
https://bibliotekanauki.pl/articles/1386471.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Parasitism
Halacaridae
Aquatic Mites
Host
pasożytnictwo
wodopójki
gospodarz
Opis:
The article deals with a survey on literature of parasitic halacarid mites. Exact nature of relationship between mites and their invertebrate hosts is unknown for most of these associations, as live observations not found. Some species are assumed to be parasitic.
Artukuł zawiera przegląd literatury dotyczącej pasożytniczych wodopójek z rodziny Halacaridae. W większości przypadków pasożytniczych wodopójek i ich gospodarzy do dzisiaj nie jest znany dokładny charakter interakcji, ponieważ brak obserwacji osobników żywych. W przypadku części gatunków nie jest jasne nawet czy są pasożytami zwierząt bezkręgowych na których zostały znalezione.
Źródło:
Acta Biologica; 2020, 27; 5-10
2450-8330
2353-3013
Pojawia się w:
Acta Biologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proteomic analysis of Hymenolepis diminuta (Cestoda) cysticercoid larvae - an insight into the biology of invasion
Autorzy:
Sulima, A.
Bien, J.
Mlocicki, D.
Powiązania:
https://bibliotekanauki.pl/articles/6618.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
proteomic analysis
Hymenolepis diminuta
Cestoda
cysticercoid
larva
invasion
parasitism
Źródło:
Annals of Parasitology; 2016, 62, Suppl.
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonality of microsporidian and gregarine parasitism in Gammarus pulex (Crustacea: Amphipoda) inhabiting the tributary of the Słupia river
Sezonowość pasożytnictwa mikrosporydiów i gregaryn kiełża zdrojowego (Crustacea: Amphipoda) zamieszkujacego dopływ Słupi
Autorzy:
Wroblewski, P.
Ovcharenko, M.
Eichenlaub, J.
Yuryshynets, V.
Powiązania:
https://bibliotekanauki.pl/articles/2053044.pdf
Data publikacji:
2019
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
parasitism
seasonality
Gammarus pulex
Microsporidia
Apicomplexa
small coastal river
Opis:
Seasonal observations of prevalence and intensity of microsporidians and gregarines infecting the native amphipod Gammarus pulex, in the tributary of small Baltic coastal river were analyzed. Using aggregate data from 12 date-by-site comparisons, we found that both prevalence and intensity of Apicomplexa were seasonally unimodal. Parasitism first increased and then declined seasonally after peaking midseason. In the case of infections caused by Microsporidia, the highest increase falls in the early autumn period, reaching the value from 48 to 56%. The minimum share of infected hosts was recorded in March 2016 and January 2017. In the early spring period, there was a slight decrease in microsporidian infection with subsequent minor fluctuations in the summer. We showed that this parasite can decreases the survival of G. pulex in the late stages of infection development in autumn. However, the host reproduction in the spring and the summer could potentially reduce the negative impact of the parasite on host populations.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2019, 23; 37-42
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EUROPEAN MYRIAD OF APPROACHES TO PARASITIC COMMERCIAL PRACTICES
Autorzy:
MacGregor Pelikanova, Radka
Powiązania:
https://bibliotekanauki.pl/articles/489123.pdf
Data publikacji:
2017
Wydawca:
Instytut Badań Gospodarczych
Tematy:
Unfair Commercial Practices Directive
harmonization
unfair competition
parasitism
consumer
Opis:
Research background: The Post-Lisbon EU aims at smart, sustainable, and inclusive growth on the single internal market, as indicated by the Europe 2020. The interplay of the competition and consumer protection on such a market is subject to harmonization. The Unfair Commercial Practices Directive has been made in order to achieve a full harmonization in this respect in 2007. However, EU member states share different social, political, legal and economic traditions and their approaches to unfair competition, in particular if committed via parasitic commercial practices, are dramatically diverse. In such a context, is it feasible, effective and efficient to install a full harmonization? Purpose of the article: The primary purpose of this article is to describe and assess approaches to unfair competition, in particular if committed via parasitic commercial practices, by the EU law and EU member states law. The secondary purpose is to study and evaluate possibilities for the feasible, effective and efficient harmonization, or their lack. Methods: The cross-disciplinary and multi-jurisdictional nature of this article, and its dual purposes, implies the use of Meta-Analysis, of the critical comparison of laws and the impact of their application, to the holistic perception of historical and national contexts, and to case studies. The primary and secondary sources are explored and the yield knowledge and data are confronted with the status quo. The dominating qualitative research and data are complemented by the quantitative research and data. Findings & Value added: The EU opted for an ambitious challenge to install via the Unfair Commercial Practices Directive a full harmonization of the regime against unfair commercial practices, including parasitic ones. The exploration pursuant to the duo of purposes suggests that the challenge is perhaps too ambitious and that the EU underestimated the dramatic diversity of approaches to unfair commercial practices, especially parasitic ones.
Źródło:
Oeconomia Copernicana; 2017, 8, 2; 167-180
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Helicosporidia: a genomic snapshot of an early transition to parasitism
Autorzy:
Sun, Y.
Pombert, J.-F.
Powiązania:
https://bibliotekanauki.pl/articles/58197.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Helicosporidium
green alga
alga
comparative genomics
entomopathogen
parasitism
parasite
invertebrate
Opis:
Helicosporidia are gut parasites of invertebrates. These achlorophyllous, non-photosynthetic green algae are the first reported to infect insects. Helicosporidia are members of the green algal class Trebouxiophyceae and are further related to the photosynthetic and non-photosynthetic genera Auxenochlorella and Prototheca, respectively, the latter of which can also turn to parasitism under opportunistic conditions. Molecular analyses suggest that Helicosporidia diverged from other photosynthetic trebouxiophytes less than 200 million years ago and that its adaptation to parasitism is therefore recent. In this minireview, we summarize the current knowledge of helicosporidian genomics. Unlike many well-known parasitic lineages, the Helicosporidium sp. organelle and nuclear genomes have lost surprisingly little in terms of coding content aside from photosynthesis-related genes. While the small size of its nuclear genome compared to other sequenced trebouxiophycean representatives suggests that Helicosporidium is going through a streamlining process, this scenario cannot be ascertained at this stage. Genome expansions and contractions have occurred independently multiple times in the green algae, and the small size of the Helicosporidium genome may reflect a lack of expansion from a lean ancestor state rather than a tendency towards reduction.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Are all red algal parasites cut from the same cloth?
Autorzy:
Salomaki, E.D.
Lane, C.E.
Powiązania:
https://bibliotekanauki.pl/articles/58589.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
parasitism
life strategy
Rhodophyta
parasite
evolution
Florideophyceae
organelle
red alga
Opis:
Parasitism is a common life strategy throughout the eukaryotic tree of life. Many devastating human pathogens, including the causative agents of malaria and toxoplasmosis, have evolved from a photosynthetic ancestor. However, how an organism transitions from a photosynthetic to a parasitic life history strategy remains mostly unknown. This is largely because few systems present the opportunity to make meaningful comparisons between a parasite and a close free-living relative. Parasites have independently evolved dozens of times throughout the Florideophyceae (Rhodophyta), and often infect close relatives. The accepted evolutionary paradigm proposes that red algal parasites arise by first infecting a close relative and over time diversify and infect more distantly related species. This provides a natural evolutionary gradient of relationships between hosts and parasites that share a photosynthetic common ancestor. Elegant microscopic work in the late 20th century provided detailed insight into the infection cycle of red algal parasites and the cellular interactions between parasites and their hosts. Those studies led to the use of molecular work to further investigate the origins of the parasite organelles and reveal the evolutionary relationships between hosts and their parasites. Here we synthesize the research detailing the infection methods and cellular interactions between red algal parasites and their hosts. We offer an alternative hypothesis to the current dogma of red algal parasite evolution and propose that red algae can adopt a parasitic life strategy through multiple evolutionary pathways, including direct infection of distant relatives. Furthermore, we highlight potential directions for future research to further evaluate parasite evolution in red algae.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first record of parasites in Gammarus tigrinus Sexton, 1939 - a recent newcomer to the Gulf of Gdańsk
Autorzy:
Rolbiecki, L.
Normant, M.
Powiązania:
https://bibliotekanauki.pl/articles/47680.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
amphipod
parasite
Gammarus tigrinus
Maritrema subdolum
parasitism
Baltic Sea
Gdansk Gulf
Opis:
The present paper reports for the first time on the occurrence of the parasite Maritrema subdolum in the amphipod Gammarus tigrinus, a non-native species in the Gulf of Gdańsk.
Źródło:
Oceanologia; 2005, 47, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Negatio non cognoscitur nisi per affirmationem: Some Remarks on Negation Parasitism in John Duns Scotus’s Writings
Autorzy:
Maserati, Matteo
Powiązania:
https://bibliotekanauki.pl/articles/1621442.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
John Duns Scotus. Negation. Asymmetrical account of negation. Negation parasitism. Negation eliminativism.
Opis:
The aim of this paper is to detect and assess some parasitic aspects that character ize John Duns Scotus’s account of negation, with a major focus on epistemology and theology. The first paragraph introduces the concepts of asymmetricalism or negation parasitism and traces the occurrence of four asymmetricalist theses in the Author’s production. The second paragraph presents and analyzes a first strategy to dismiss negative theology through an elimination scheme, namely a conditional which reduces negative epistemic propositions to positive ones. The third section attempts a generalization of such a scheme to make it suitable for any kind of nega tive knowledge foreign to the theological context. The fourth and last paragraph presents a different and more problematic eliminative strategy for negative theology and deals with the issues that arise from it.
Źródło:
Analiza i Egzystencja; 2021, 54; 155-180
1734-9923
2300-7621
Pojawia się w:
Analiza i Egzystencja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problematyka pasożytnictwa społecznego: aspekty prawne
Problems of ”social parasitism”: legal aspects
Autorzy:
Szamota, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/699208.pdf
Data publikacji:
1985
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
problematyka
pasożytnictwo
społeczeństwo
aspekt prawny
kara
problems
social parasitism
legal aspects
penalty
Źródło:
Archiwum Kryminologii; 1985, XII; 101-112
0066-6890
2719-4280
Pojawia się w:
Archiwum Kryminologii
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drilling predation on Permian brachiopods and bivalves from the Glass Mountains, West Texas
Autorzy:
Hoffmeister, A P
Kowalewski, M.
Baumiller, T.K.
Bambach, R.K.
Powiązania:
https://bibliotekanauki.pl/articles/23218.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
drilling predation
Paleozoic
brachiopod
drilling parasitism
Glass Mountains
mollusc
bivalve mollusc
Texas
paleontology
Opis:
Although bored invertebrates have been described from every period of the Paleozoic, little information on the frequency and nature of Late Paleozoic drill holes exists. Our examination of the Permian silicified fossils, which were bulk collected by G.A. Cooper from the Glass Mountains of west Texas, revealed numerous drilled brachiopods and bivalve mollusks. Drill holes are perpendicular to the shell, smooth sided, sometimes beveled, and have other characteristics consistent with a predatory/parasitic origin. The frequency of drilling is significantly lower (p ≤ 0.05) for brachiopods (1.07%, n = 7597) than for bivalves (7.43%, n = 619). This study confirms that drilling predators and/or parasites were present in the Late Paleozoic. However, the drilling frequencies reported here—rarely exceeding 5%—are much lower than those reported for the Late Mesozoic and Cenozoic, which typically exceed 20%. The low Late Paleozoic frequencies are consistent with a majority of estimates reported previously for the older periods of the Paleozoic and suggest that the intensity of drilling predation/parasitism in marine benthic ecosystems remained low throughout the Paleozoic and did not increase until some time in the Mesozoic. Our data suggest that prey/host types with a higher nutritional return (bivalve mollusks) may have been preferentially selected for attack by predator(s)/parasites(s) already in the Permian.
Źródło:
Acta Palaeontologica Polonica; 2004, 49, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of wheat-canola intercropping on Phelipanche aegyptiaca parasitism
Autorzy:
Razavifar, Z.
Karimmojeni, H.
Sini, F.G.
Powiązania:
https://bibliotekanauki.pl/articles/65052.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wheat-canola intercropping
canola
wheat
intercropping
parasitic plant
weed
Phelipanche aegyptiaca
Striga
parasitism
Opis:
Parasitic weeds especially Phelipanche aegyptiaca decrease severely the production of canola. This study evaluated the effect of intercropping different wheat genotypes with canola on Phelipanche aegyptiaca growth. Ten wild wheat genotypes with different ploidy levels including TRI11712, TRI19322, TRI18664, TRI19652, TRI565, TRI15593, TRI12911, TRI11554, TRI17606, TRI7259P and seven cultivated bread wheats, namely: Falat, Chamran, Alamut, Baiat, Kavir, Sepahan, Alvand in addition to a canola cultivar called Zarfam were studied. The results revealed that intercropping of canola with wheat could significantly reduce broomrape growth depending on the type of wheat genotype. A significant genetic variation of allelopathic activity in wheat was observed, indicating the contribution of multiple genes conferring the allelopathic trait. TRI565 and TRI12911, TRI15593, TRI18664, TRI19652, TRI17606, TRI19322, and TRI7259 genotypes showed strong inhibitory effects and can be considered as potential allelopathic genotypes to suppress broomrape. The inhibitory potential of wild wheat genotypes was stronger than cultivated wheat genotypes. Alamut, Baiat, Alvand, Sepahan, and TRI11712 possessed strong stimulatory effects on broomrape germination. Such genotypes may be valuable as trap crops for depleting the Egyptian broomrape seed bank.
Źródło:
Journal of Plant Protection Research; 2017, 57, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problematyka pasożytnictwa społecznego: aspekty kryminologiczne
Problems of "social parasitism": criminological aspects
Autorzy:
Kossowska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/699214.pdf
Data publikacji:
1985
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
pasożytnictwo
społeczeństwo
aspekty kryminologiczne
kryminologia
problematyka
niedostosowanie
social parasitism
criminological aspects
criminology
problems
maladjustment
Źródło:
Archiwum Kryminologii; 1985, XII; 113-118
0066-6890
2719-4280
Pojawia się w:
Archiwum Kryminologii
Dostawca treści:
Biblioteka Nauki
Artykuł
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