Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Host records"”.
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Parasite communities associated with the Cape gurnard (Chelidonichthys capensis) and the lesser gurnard (C. queketti) from South Africa
… has not yet been surveyed, although there are records of a number of copepods infecting both species that have been documented for taxonomic purposes. This study aims to examine the macroparasite assemblages of both gurnard species from the west and south coasts of South Africa and determine …
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Cyclocoelidae do Brasil (Trematoda)
… in Brazil for the first time, and consist new host records. Neivaia cymbium is also referred in four new hosts. Original camera lucida drawings of the studied species as well as a table with their geographical distribution are presented. The systematical classification of the studied family is …
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Survey of Nasal Mites (Acari: Rhinonyssidae, Ereynetidae, Turbinoptidae) in Birds from Three States in the United States
… which mite species may have different levels of host specificity from host orders to families or even species level. Nasal mites in North America have been surveyed in different locations, such as studies ranging from the Gulf Coast of the US to Canada. From those surveys, the reported prevalence …
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Contribuição ao conhecimento da fauna helmintológica do Anu Branco (Guira Guira (G. M.))
… Collection are studied. 91, 8% of the hosts were parasited and the highest infection level was due to the nematodes, followed by the acanthocephalans, trematodes and cestodes. Aprocta brevipenis sp. n., represented by a nematode recovered from eye socket is here proposed. The following …
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Investigating trophic interactions between parasites and their marine fish hosts using stable isotope analysis
… trophic interactions between parasites and their hosts need to be assessed. Here, I investigated host-parasite interactions using stable isotope analyses on a broad range of marine fish hosts and their associated copepod and monogenean gill parasites. The study also provides insight into the gill …
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A survey of the metazoan parasite assemblage of snoek, Thyrsites atun (Euphrasen, 1791), off South Africa with an assessment of host-parasite relationships and potential biological tags
… their influence on the evolutionary history of host species and their potential applications are slowly being uncovered. The snoek, Thyrsites atun, is a nomadic predator native to the cold coastal waters of the southern Hemisphere. Being a major target of the South African inshore line-fishery, …
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New taxa and phylogenetic placement of Asterinales from Brazil
Infected living leaves of different host plants showing black colonies belonging to Asterinales were collected in areas of Atlantic forest of Brazil in field trips during 2009–2012. The field trips were conducted in four Brazilian states and six areas: Minas Gerais (Mata do Paraíso, Mata do Seu …
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Contribuição ao conhecimento da fauna helmintológica na região Amazônica - Nematódeos
Study 18 species as follows: TRICHOSTRONGYLOIDEA: Hassalstrongylus dessetae sp. n., Heligmostrongylus proechimysi Durette-Desset, 1970, Viannaia hamata Travassos, 1914, Molineus torulosus ( Molin, 1861) Yorke & Maplestone, 1926. OXYUROIDEA: Aspidodera raillieti Travasses, 1914, Aspidodera …
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Taxonomy and Life History of Gall Midges (Diptera, Cecidomyiidae) on Drosanthemum and Malephora (Aizoaceae) in South Africa
… Schwantes and Malephora N.E.Br., and additional host records were recorded from Lampranthus N.E.Br., Carpobrotus N.E.br., Acrodon N.E.Br., Cephalophyllum Haw. and Jordaaniella H.E.K. Hartmann. The gall midges are described from adults, pupae and larvae and information is provided on their galls, …
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Biosystematics of the family dactylopiidae (Homoptera: Coccinea) with emphasis on the life cycle of dactylopius coccus costa
… affinities and relationships. Their hosts, natural enemies, distribution, etymology, and role as biological control agents are discussed. For several species many new distribution and host records are given. Also, new types have been designated for some of the species. These included …
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Identifying dryinidae (hymenoptera) - auchenorrhyncha (hemiptera) host associations using phylogenetics
… of the suborder Auchenorrhyncha (Hemiptera). Host records of these important biocontrol agents are fragmentary because previous records have been based on tedious laboratory rearing of parasitized individuals requiring environmental control and long waiting periods, usually with limited …
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The Burrowing Barnacles (Cirripedia, Acrothoracica) of South Africa
… last publication on this group appeared. A new host category for acrothoracicans is described in Chapter 1, as Weltneria spinosa was collected from coralline red algae. This finding was not an isolated event, as this species was found inhabiting four different species of coralline algae across a …
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Biosystematics of the genus Chionaspis (Homoptera, Coccoidea, Diaspididae) of North America, with emphasis on polymorphism
… affinities and relationships. Their host habits and zoogeography are summarized. The five species having typical bark and leaf forms, as well as intermediate forms, are discussed in more detail. A separate chapter deals with polymorphism, including a historical literature review of …
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Morphology and systematics of the adult females of the genus Lecanodiaspis (Homoptera: Coccoidea: Lecanodiaspididae)
… characters, geographical distribution, and host records. Maps are given for the distribution of species within each group, and affinities are given for each species at the end of its description. A suggested phylogenetic tree for all species in the genus is given, and the phylogeny of the …
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Identifying floral hosts of cerambycid beetles using palynology
… of feeding in this group is inferred from floral host records, which are biased against tall trees because they are inaccessible to naturalists. I present a simplified palynological method for extracting and quantifying pollen from the frass of 21 species of beetles collected on flowers, with …
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Seasonal abundance and host preference of Culicoides in Virginia: with emphasis on the ecology of Culicoides variipennis (Diptera: Ceratopogonidae)
… species collected in both traps. Eight new host records were reported in this study. The drop trap collected more midges than did the vacuum trap, and the cattle trap collected more midges than did the sheep trap. Culicoides stellifer began host-seeking activity at SS-30 in bait traps and …
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Protozoan, helminth and arthropod parasites of the gray squirrel in southwestern Virginia
… 1969, in southwestern Virginia. Most of the hosts came from Montgomery County, some being taken also from Giles and Craig counties. Of that total, 167 were examined for coccidia and intestinal flagellates; 84 were examined for blood parasites; 175 were examined for helminths and 106 for …
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Taxonomy, phylogeny and resource use of Glyptapanteles (Hymenoptera: Braconidae, Microgastrinae), genus highly diversified in the Neotropics
… role in regulating their lepidopteran host populations and in maintaining high biological diversity in terrestrial ecosystems. A reliable revision for the Neotropics has not yet been attempted and many Glyptapanteles species remain undescribed. The scarcity of both taxon sampling and …
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The parasite assemblage of Scomber japonicus (Houttyun, 1782) off South Africa
… off South Africa, and to determine which host characteristics (size, sex and region) influenced parasite infection indices. This species is a small to medium sized, pelagic fish, that has a cosmopolitan, anti-tropical distribution and with populations showing large-scale, environmentally …
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Studies on the diversity and distribution of marine ichthyoparasites in Southern Africa
… (133). The parasites formed 723 unique host-parasite pairs with 269 host taxa spread across the classes Actinopterygii (186), Elasmobranchii (80), Holocephalii (2) and Myxini (1). Host species with the most diverse parasite assemblages were species of commercial significance, namely …
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