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| Registros recuperados: 99 | |
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| De Montaudouin, X.; Lanceleur, L.. |
| We studied the spatial heterogeneity of infection of the marine bivalve Cerastoderma edule (cockle) by trematode parasites at 5 different scales in Banc d'Arguin, France. At the km-scale, the communities of trematodes differed among stations in terms of species composition and specific abundance. Infection heterogeneity was likely due to the occurrence of the definitive host and the conditions of transmission (water parameters). At the 100 m scale, trematode species richness was similar among stations, but specific trematode abundances differed. The most significant variable in terms of explaining trematode infection heterogeneity was the presence of the first intermediate host. At the 10 m scale, the distance at which parasite abundance diminished varied... |
| Tipo: Text |
Palavras-chave: Spatial heterogeneity; Aggregation pattern; Parasitism; Cerastoderma edule; Sampling scale. |
| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00375/48647/49047.pdf |
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| Scaglia,M.; Chaud-Netto,J.; Brochetto-Braga,M. R.; Ceregato,S. A.; Gobbi,N.; Rodrigues,A.. |
| Large scale mass rearing of natural enemies has been a mean of improving biological control in the sugarcane intensive agriculture. Among them, Cotesia flavipes, a gregarious koinobiont endoparasitoid, was imported by Brasil to control caterpillars of the sugarcane borer Diatraea saccharalis. The C. flavipes larval development depends on its association with polydnavirus, which blocks the host defense reaction. To verify if the oviposition sequence (1st, 2nd or 3rd) and the female condition (mated or virgin) interfere in the number of C. flavipes descendents, 4th instar caterpillars of D. saccharalis were parasitized. Analysis of the data showed that: a) there is an inverse correlation between the parasitism efficiency and the host reaction... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cotesia flavipes; Diatraea saccharalis; Oviposition sequence; Encapsulation; Chrysalises; Parasitism. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000300007 |
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| Ross, Arnold; Newman, William A.. |
| The coral-eating barnacle Hoekia monticulariae (Gray, 1831), the only internal parasite among the Thoracica described to this day, is characterized by an irregularly-shaped shell nestled cryptically between the polyps of the hermatypic coral Hydnophora Fischer, 1807, which occurs throughout most of the Indo-West Pacific. Because of its protean form, cirripedologists have failed to appreciate the diversity of taxa related to Hoekia, , a presumed monotypic genus. We describe seven new species divided between Hoekia and three new genera, Eohoekia, Parahoekia, and Ahoekia for which the Tribe Hoekiini is proposed. As in other pyrgomatids, calcareous overgrowth by the coral is inhibited around the edge of the wall and aperture. But in Hoekiini a pseudopolyp,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cirripedia; Pyrgomatidae; Hoekia; Coral-eating barnacles; New species; Parasitism; Functional morphology. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/504389 |
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| Loyola,Rafael D.; Martins,Rogério P.. |
| Temporal variation of solitary wasps and bees, nesting frequency, mortality, and parasitism were recorded from a remanent forest in Belo Horizonte, MG, Brazil. Wasps and bees were collected in trap-nests placed in areas with 25, 100, and 400 m², from February to November 2004. The 137 trap-nests collected contained 11 species of wasps and bees. Wasps occupied most nests (75%). Occupation peaks occurred in March (25%) and September (26%); in June, the lowest occupation (2%) was observed. Except for Trypoxylon (Trypargilum) lactitarse Saussure, no significant correlation was found between number of occupied nests, and temperature and rainfall means. In the nests, 48% of the immature specimens died; 13% of the nests were parasitized. Total death and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nesting behavior; Mortality; Parasitism; Trypoxylon lactitarse; Auplopus militaris. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000100006 |
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| Bragança,Marcos A.L.; Della Lucia,Terezinha M.C.; Tonhasca Jr.,Athayde. |
| Phoridae flies parasitize several ant species, including many Atta leaf-cutting ants. In this note, the attacks of three coexisting phorid species (Myrmosicarius grandicornis Borgmeier, Apocephalus attophilus Borgmeier and Neodorhniphora bragancai Brown) against Atta bisphaerica Forel workers in a pasture located in Viçosa County, Minas Gerais State, Brazil, are reported. The first two species of phorids are known to parasitize other leaf-cutting ants. N. bragancai, however, has been found only around A. bisphaerica nests. Each of these phorid species selects ants engaged in different tasks and oviposits in specific sites of the ant body. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parasitism; Oviposition behavior. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000100028 |
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| Romero,Alvaro; Hogsette,Jerome A; Coronado,Alfredo. |
| From September 2001 through September 2002, house fly and stable fly pupae were collected weekly from three fly habitats at the University of Florida Research dairy in northcentral Florida and evaluated for parasitism. Varying parasitism percentages were observed throughout the study but they were not affected by temperature, precipitation or fly abundance. Of the 6,222 house fly pupae and 1,660 stable fly pupae that produced either a host fly or a parasitoid, 26.9% and 26.7% were parasitized, respectively. Ten parasitoid species were recovered, with the genus Spalangia accounting for 85.7% of the total; the most common parasitoids attacking house fly and stable fly pupae were Spalangia endius Walker (33.9% and 27.3%), S. cameroni Perkins (27.9% and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stomoxys calcitrans; Musca domestica; Natural enemy; Parasitism. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300017 |
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| Cansi,ER; Bonorino,R; Ataíde,HS; Pujol-Luz,JR. |
| In April 2009, a wild maned wolf, Chrysocyon brachyurus, was captured in an area of cerrado in Brasília, DF, Brazil, with screw worm maggots in external wounds. Fifty larvae were bred in the laboratory and eight adults of Cochliomyia hominivorax (Coquerel) emerged 10 days after pupation. This is the first report of a myiasis by C. hominivorax in a free-living maned wolf in Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Parasitism; Blowfly; Dipterous larva; Veterinary medicine. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000100025 |
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| Santos,Alex M.; Serrano,José C.; Couto,Ricardo M.; Rocha,Leonardo S.G.; Mello-Patiu,Cátia A.; Garófalo,Carlos A.. |
| Parasites of adult bees are almost exclusively flies and the most important of them are conopids. This note registers for the first time the association of species of Physocephala (Diptera: Conopidae) with Centris (Heterocentris) analis (Fabricius). From 26 females and nine males of the host species found dead inside trap-nests on the campus of the University of São Paulo, Ribeirão Preto, Brazil, 35 parasitoids were obtained belonging to nine species of Physocephala. The data show that C. analis is a host to several conopid flies, and suggest that such parasitoids can play an important role in population control of this bee species. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parasitism; Parasite-host association; Bee; Trap-nest. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000500018 |
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| MONNERAT,R.G.; KIRK,A.A.; BORDAT,D.. |
| The genus Diadegma have some species able to parasite Plutella xylostella (L.) (DBM). Laboratory studies were carried out on a Diadegma sp. from Reunion Island to elucidate its ability to parasite DBM larvae, and to determine the influence of the temperature on its fecundity, longevity, oviposition and the consumption of cabbage leaves by parasitized DBM larvae. Parasitism rates were close to 70% for the L2 and L3 instar, and 53% for the L4. At 15°C, there were no progeny. At 20°C and 25°C, the percentage of parasitism was near 70%. At 29°C, the percentage parasitism was similar but the number of males produced was higher. Parasitized DBM larvae consumed 35% less leaf surface than non parasitized larvae. This Diadegma sp. is a possible candidate for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural enemies; Cabbage; Temperature; Parasitism; Diamondback moth. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000200015 |
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| Canto-Silva,Celson R.; Romanowski,Helena P.. |
| The population fluctuations, mortality in the immature phases and longevity of the Spartocera dentiventris (Berg) adults were studied in an experimental plot of Nicotiana tabacum (Solanaceae) at the Faculdade de Agronomia - Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil (30º 05' S and 51º 13' W). From November 1996 to March 1997, 30 sampling occasions were carried out: 23 plants were inspected and the number of eggs and nymphs per instar counted and adults marked / recaptured. Mortality in immature bugs was estimated by the difference between the population peaks in successive instars per plants. Parasitism was evaluated based on the egg colour. Two generations developed through the cycle of the crop, the various instars overlapping in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gray-tobacco-bug; Population ecology; Parasitism. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300003 |
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| Tarer, V.; Marques, A.; Raymond, J. Ch.. |
| Un échantillonnage de poissons parasités (Diplodus puntazzo) en provenance d’une firme aquacole située au Sud-est de la Corse (Ouest méditerranéen) montre une infestation due à un Myxidium leei. Le parasite envahit l’épithélium intestinal causant amaigrissement du poisson et une forte mortalité. Les spécimens de plus de 16 cm de longueur totale étaient significativement moins infestés. Toutefois, l’infestation ne montre pas de différence significative entre mâles et femelles quelle que soit la taille des spécimens. Quelques paramètres hématologiques ont été utilisés pour montrer le rôle du parasite dans cette maladie de poissons et statuer sur l’interaction hôte-parasite. |
| Tipo: Journal Contribution |
Palavras-chave: Fish diseases; Interactions; Parasitic diseases; Hosts; Aquaculture; Parasitism; Fish culture. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4291 |
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| Registros recuperados: 99 | |
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