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Bat flies (Streblidae) are obligate blood-feeding ectoparasites of bats that display varying degrees of host specificity. A total of 265 streblid bat flies were collected from 122 bats belonging to the families Phyllostomidae and Natalidae from Utila, the smallest bay island of Honduras. Out of four host-parasite associations, three were considered primary. Out of the three bat species analyzed, one had significantly lower parasite prevalence and another had significantly higher parasite load and intensity. Both male and female bats were equally likely to be infested and variables of parasite density did not differ amongst host sex for any species. However, one species of bat had a significantly larger number of male parasites than female parasites. No significant relationships were found between variables of parasite density and host body mass or bat health (indicated by the ratio of mass to forearm length). The roosting ecology of the two cave roosting species in the study was considered and despite no apparent lack of dispersal barriers, the bat flies exhibited consistent primary associations. Examination of similar host-parasite relationship has many implications in parasite-host relationships and coevolution.

Thesis (M. Sc.)--York University, 2003. Graduate Programme in Biology. / Typescript. Includes bibliographical references (leaves 72-84). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ82961.

Made available in DSpace on 2014-06-11T19:27:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-07-13Bitstream added on 2014-06-13T18:56:57Z : No. of bitstreams: 1 evora_pm_me_jabo.pdf: 744641 bytes, checksum: a5e0ac8088bb4b297b55998c84f9c100 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Resultados no Brasil demonstraram, ao contrário de laboratórios dos EUA e Japão, que o cão doméstico não desenvolve resistência ao carrapato Rhipicephalus sanguineus. Além disso, populações de R. sanguineus do Brasil e da Argentina apresentam diferenças biológicas, morfológicas e genéticas marcantes sendo a primeira mais próxima filogeneticamente do R. turanicus da África e a segunda do R. sanguineus da Europa, o que explicaria, em parte, as diferenças citadas acima. Objetivou-se investigar, de forma comparativa, possível aquisição de resistência em cães domésticos após três infestações sucessivas com R. sanguineus, linhagens Brasil e Argentina. Cães domésticos da raça Dachshund, machos e fêmeas, de três meses a um ano de idade, “naive”, foram utilizados como hospedeiros. Os cães (n= 10) foram distribuídos em dois grupos (G1 e G2) com cinco animais cada e infestados três vezes com R. sanguineus: G1- linhagem brasileira, e G2- linhagem argentina. Avaliaram-se: parâmetros biológicos dos carrapatos, histopatologia dos sítios de fixação na 1a e 3a infestações e titulação de anticorpos séricos dos cães pelo teste ELISA. Resultados dos parâmetros biológicos indicaram melhor desempenho alimentar e reprodutivo das teleóginas após infestações sucessivas, em ambos os grupos. Biópsias do sitio de fixação dos carrapatos revelaram, em ambos os grupos, infiltrado inflamatório com predomínio de células mononucleares 24 horas pós- liberação dos carrapatos e predominantemente neutrofílico em todas as infestações na 48a, 72a e 144a horas pós-liberação. O teste ELISA revelou baixa produção de anticorpos séricos no G2, em infestações sucessivas, e maior produção pós-segunda e terceira infestações no G1. Também demonstrou... / Contrarily to that observed in U.S.A and Japan, previous results from Brazil have shown that domestic dogs do not develop resistance to the dog tick Rhipicephalus sanguineus. In addition, populations of R. sanguineus from Brazil and Argentina have biological, morphological and genetic differences, being the first phylogenetically closest to R. turanicus from Africa and the second to R. sanguineus from Europe, what could explain, at least in part, the differences reported above. The aim now was to investigate, in a comparative way, the possible acquisition of resistance in domestic dogs after three successive infestations with R. sanguineus ticks, Brazil and Argentina strains. For this, “naive” domestic dogs of the breed Dachshund, males and females, aged three months to one year were used. The hosts (n = 10) were divided into two groups with five animals each, infested thrice with R. sanguineus: G1- Brazil strain; G2- Argentina strain. It was evaluated: i. biological parameters of ticks in each infestation; ii. histopathology of their fixation sites in different times (24, 48, 72 and 144 hours) post-tick release in the 1st and 3rd infestations, including inflammatory cell counting; iii. titration of dog sera antibodies by ELISA. Results of the biological parameters indicated better engorged females feeding and reproductive performances after successive infestations in both groups. Biopsies of the ticks´ attachment sites in the 1st and 3rd infestations revealed, in both groups, predominantly mononuclear inflammatory cells infiltrates 24 hours post-tick release and predominantly neutrophylic in all infestations at 48, 72 and 144 hours post-tick release. The ELISA revealed low antibody titers in G2, in successive infestations, and increased titers post second and third infestations, in G1. It also revealed cross-reactivity between the... (Complete abstract click electronic access below)

Orientador: Gervasio Henrique Bechara / Banca: Rosangela Zacarias Machado / Banca: Jair Rodini Engracia Filho / Resumo: Resultados no Brasil demonstraram, ao contrário de laboratórios dos EUA e Japão, que o cão doméstico não desenvolve resistência ao carrapato Rhipicephalus sanguineus. Além disso, populações de R. sanguineus do Brasil e da Argentina apresentam diferenças biológicas, morfológicas e genéticas marcantes sendo a primeira mais próxima filogeneticamente do R. turanicus da África e a segunda do R. sanguineus da Europa, o que explicaria, em parte, as diferenças citadas acima. Objetivou-se investigar, de forma comparativa, possível aquisição de resistência em cães domésticos após três infestações sucessivas com R. sanguineus, linhagens Brasil e Argentina. Cães domésticos da raça Dachshund, machos e fêmeas, de três meses a um ano de idade, "naive", foram utilizados como hospedeiros. Os cães (n= 10) foram distribuídos em dois grupos (G1 e G2) com cinco animais cada e infestados três vezes com R. sanguineus: G1- linhagem brasileira, e G2- linhagem argentina. Avaliaram-se: parâmetros biológicos dos carrapatos, histopatologia dos sítios de fixação na 1a e 3a infestações e titulação de anticorpos séricos dos cães pelo teste ELISA. Resultados dos parâmetros biológicos indicaram melhor desempenho alimentar e reprodutivo das teleóginas após infestações sucessivas, em ambos os grupos. Biópsias do sitio de fixação dos carrapatos revelaram, em ambos os grupos, infiltrado inflamatório com predomínio de células mononucleares 24 horas pós- liberação dos carrapatos e predominantemente neutrofílico em todas as infestações na 48a, 72a e 144a horas pós-liberação. O teste ELISA revelou baixa produção de anticorpos séricos no G2, em infestações sucessivas, e maior produção pós-segunda e terceira infestações no G1. Também demonstrou... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Contrarily to that observed in U.S.A and Japan, previous results from Brazil have shown that domestic dogs do not develop resistance to the dog tick Rhipicephalus sanguineus. In addition, populations of R. sanguineus from Brazil and Argentina have biological, morphological and genetic differences, being the first phylogenetically closest to R. turanicus from Africa and the second to R. sanguineus from Europe, what could explain, at least in part, the differences reported above. The aim now was to investigate, in a comparative way, the possible acquisition of resistance in domestic dogs after three successive infestations with R. sanguineus ticks, Brazil and Argentina strains. For this, "naive" domestic dogs of the breed Dachshund, males and females, aged three months to one year were used. The hosts (n = 10) were divided into two groups with five animals each, infested thrice with R. sanguineus: G1- Brazil strain; G2- Argentina strain. It was evaluated: i. biological parameters of ticks in each infestation; ii. histopathology of their fixation sites in different times (24, 48, 72 and 144 hours) post-tick release in the 1st and 3rd infestations, including inflammatory cell counting; iii. titration of dog sera antibodies by ELISA. Results of the biological parameters indicated better engorged females feeding and reproductive performances after successive infestations in both groups. Biopsies of the ticks' attachment sites in the 1st and 3rd infestations revealed, in both groups, predominantly mononuclear inflammatory cells infiltrates 24 hours post-tick release and predominantly neutrophylic in all infestations at 48, 72 and 144 hours post-tick release. The ELISA revealed low antibody titers in G2, in successive infestations, and increased titers post second and third infestations, in G1. It also revealed cross-reactivity between the... (Complete abstract click electronic access below) / Mestre

Orientador: Angelo Pires do Prado / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-19T07:54:28Z (GMT). No. of bitstreams: 1 Moraes_DaviLimade_M.pdf: 2408222 bytes, checksum: 9af11ecabbb506996c379bb08f1ec2e8 (MD5) Previous issue date: 2011 / Resumo: Foi analisado um total de 51 exemplares dos quais cinco não apresentaram ácaros. A identificação foi realizada por meio de chaves taxonômicas de espécies de ácaros e literatura específica. Ácaros pertencentes às seguintes subordens foram identificados: Astigmata - Analgidae: Diplaegidia columbae Buchholz 1869; Diplaegidia columbigallinae Cerný, 1975; Dermoglyphidae: Dermoglyphus giganteus Dabert & Ehrnsberger 1993; Falculiferidae: Byersalges phyllophorus Gaud & Barré, 1988; Byersalges talpacoti Cerný, 1975; Falculifer sp. Railliet, 1896; Laminosioptidae: Fainocoptes sp. Lukoschus & Lombert, 1979; e uma espécie não identificada de Pyroglyphidae; Mesostigmata - Macronyssidae: Ornithonyssus bursa (Berlese, 1888). Prostigmata - Cheyletiellidae: Ornithocheylletia columbigallinae Fain & Bochkov, 2002; Syringophilidae: Castosyringophilus mucuya (Casto, 1980); Ereynetidae: Ophthalmophagus striatus (Crossley, 1952); e uma espécie não identificada de Harpirhynchidae. Essa foi a primeira observação de Columbina talpacoti como hospedeiro de Falculifer sp., D. giganteus, D. columbae, Fainocoptes sp., O. bursa, O. columbigallinae, O. striatus, Harpirhynchidae sp. e Pyroglyphidae sp. / Abstract: Was analyzed a total of 51 specimens and five showed no mites. The identification was performed using taxonomic keys of mites and specifies literature. Mites belong to the following sub-orders were identified: Astigmata - Analgidae: Diplaegidia columbae Buchholz 1869; Diplaegidia columbigallinae Cerny, 1975; Dermoglyphidae: Dermoglyphus giganteus Dabert & Ehrnsberger 1993; Falculiferidae: Byersalges phyllophorus Gaud & Barré, 1988; Byersalges talpacoti Cerny, 1975; Falculifer sp. Railliet, 1896; Laminosioptidae: Fainocoptes sp. Lukoschus & Lombert, 1979 and an unidentified species of Pyroglyphidae; Mesostigmata - Macronyssidae: Ornithonyssus bursa (Berlese, 1888). Prostigmata - Cheyletiellidae: Ornithocheylletia columbigallinae Fain & Bochkov, 2002; Syringophilidae: Castosyringophilus Mucuya (Casto, 1980); Ereynetidae: Ophthalmophagus striatus (Crossley, 1952), and an unidentified species of Harpirhynchidae. This was the first observation of Columbina talpacoti as host of Falculifer sp., D. giganteus, D. columbae, Fainocoptes sp., O. bursa, O. columbigallinae, O. striatus, Harpirhynchidae sp. and Pyroglyphidae sp. / Mestrado / Parasitologia / Mestre em Parasitologia

Orientador: Angelo Pires do Prado / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia / Made available in DSpace on 2018-08-20T06:19:46Z (GMT). No. of bitstreams: 1 Goulart_ThaisMarchi_M.pdf: 2829371 bytes, checksum: dfa29045423465c507fdca66a095307f (MD5) Previous issue date: 2011 / Resumo: Este trabalho objetivou o levantamento e a complementação das poucas informações sobre as espécies de ácaros associados à Zenaida auriculata na região de Campinas, SP [(Campinas (22°49'11''S, 47°4'12''O, alt.604m), Valinhos (22°58'14"S, 47°59'45"O, alt. 660m), Jaguariúna (22° 42' 20''S, 46° 59' 09''O, alt. 584m), Santa Bárbara D'oeste (22°45'13"S, 47°24'49"O, alt. 565m)] e em outras localidades como Ourinhos (22°58'44"S, 49°52'14"O, alt. 483m). No total foram analisadas 54 amostras, sendo que em 10 delas, não foram encontrados ácaros. Como resultado, obtivemos representantes das seguintes subordens: Astigmata: Falculiferidae - Falculifer isodontus Gaud & Barré, 1992; Byersalges talpacoti Cerný, 1975; Pterophagus spilosikyus Gaud & Barré, 1992; Dermoglyphidae - Dermoglyphus columbae Sugimoto, 1941; Analgidae: Diplaegidia columbae Buchholz, 1869; Diplaegidia columbigallinae Cerný, 1975; Epidermoptidae não identificado; Pyroglyphidae não identificado; Hypoderatidae: Hypodectes propus (Nitzch, 1861); Prostigmata - Cheyletiellidae: Ornithocheyletia columbigallinae Fain & Bochkov, 2002; Cheyletidae não identificado; Syringophilidae: Meitingsunes zenadourae Clark 1964; Mesostigmata - Macronyssidae: Ornithonyssus bursa (Berlese, 1888); Rhinonyssidae: Tinaminyssus zenaidurae (Crossley, 1952). As ocorrências de H. propus (deutoninfas parasitas subcutâneas), B. talpacoti, T. zenaidurae, P. spilosikyus, O. columbigallinae, O. bursa, Dermoglyphus columbae são relatadas pela primeira vez nos adultos deste hospedeiro. Foram encontradas 14 spp. de ácaros, distribuídas em: Astigmata 9, Prostigmata 3 e Mesostigmata 2. Sendo 1 sp.do aparelho respiratório; 4 spp. da pele; 2 spp nidícolas, uma delas hematófaga; 2 spp. calamícolas; 5 spp. plumícolas. O material testemunho foi depositado na coleção do Departamento de Biologia Animal, Instituto de Biologia, UNICAMP, além das fotografias dos ninhos, das aves e dos ácaros (coleção virtual) / Abstract: This study aimed to add information on the species of mites associated with Zenaida auriculata in the region of Campinas, SP. [(Campinas (22°49'11''S, 47°4'12''W, alt.604m), Valinhos (22°58'14"S, 47°59'45"W, alt. 660m), Jaguariúna (22° 42' 20''S, 46° 59' 09''W, alt. 584m), Santa Bárbara D'oeste (22°45'13"S, 47°24'49"W, alt. 565m)] and in Ourinhos (22°58'44"S, 49°52'14"O, alt. 483m). A total of 54 samples were examined, and mites were found on 44 of them. We found representatives from the following taxa: Astigmata: Falculiferidae - Falculifer isodontus Gaud & Barré, 1992, Byersalges talpacoti Cerný, 1975; Pterophagus spilosikyus Gaud & Barré, 1992; Dermoglyphidae - Dermoglyphus columbae Sugimoto, 1941; Analgidae: Diplaegidia columbae Buchholz, 1869; Diplaegidia columbigallinae Cerný, 1975; an unidentified Epidermoptidae; an unidentified Pyroglyphidae; Hypoderatidae: Hypodectes propus (Nitzch, 1861); Prostigmata - Cheyletiellidae: Ornithocheyletia columbigallinae Fain & Bochkov 2002; an unidentified Cheyletidae; Syringophilidae Meitingsunes zenadourae (Clark, 1964); Mesostigmata - Macronyssidae: Ornithonyssus bursa (Berlese, 1888); Rhinonyssidae: Tinaminyssus zenaidurae (Crossley, 1952). The occurrence of Hypodectes propus (subcutaneous deutonymphs parasites), B. talpacoti, T. zenaidurae, P. spilosikyus, O. columbigallinae, O. bursa and Dermoglyphus columbae are reported for the first time in the adult form of this host. Fourteen species of mites were found, distributed as follow: Astigmata 9, Prostigmata 3 e Mesostigmata 2. One species was of respiratory system; four of skin; two was nidiculous, but only one was hematophagous; two of quill mites; five were feather mites. Voucher specimens were deposited at a collection of Department of Animal Biology, Biology Institute, UNICAMP, in addition to photographs of nests, birds and mites (virtual collection) / Mestrado / Parasitologia / Mestre em Parasitologia

Call number: LD2668 .T4 1985 M33 / Master of Science

Trygonorrhina fasciata (Rhinobatidae) specimens naturally infected by three monogenean species were captured and maintained in marine aquaria to promote a continuous parasite load. Monogenean eggs recovered from aquaria provided larvae for descriptions and life history experiments. I describe the adult, larva and post-larval development of a new species of hexabothriid, Branchotenthes octohamatus, from the gills. This is the first monogenean larva described with only eight hooklets. This character may be useful to help resolve problematic relationships within the Hexabothriidae and offers insight into more general hypotheses about relationships within the Monogenea. I also redescribe the adult of Calicotyle australis (Monocotylidae) from the cloaca and describe the larva. The number and arrangement of larval ciliated epidermal cells and sensilla was revealed using silver nitrate. I redescribe Pseudoleptobothrium aptychotremae (Microbothriidae) adults from the skin of T. fasciata, representing a new host and locality record. Larval anatomy and post-larval development are also documented. The presence of six needle-like spicules in the larval haptor is confirmed, supporting an earlier theory that spicules are ancestral vestiges. My studies revealed three different egg hatching, host finding strategies and larval ‘types’. Branchotenthes octohamatus has a ‘sit-and-wait’ strategy, entirely dependent on mechanical disturbance to stimulate eggs to hatch. Larvae are unciliated, cannot swim, lack pigmented eyespots and show no photo-response but may survive for more than two days after hatching at 22ºC. In contrast, eggs of C. australis hatch spontaneously with a strong diurnal rhythm in the first few hours of daylight when exposed to a LD12:12 illumination regime. Larvae are ciliated and can swim, have pigmented eyespots, are photo-positive and can remain active and survive for up to 24 h after hatching at 22ºC. Eggs of P. aptychotremae may have a ‘bet-hedging’ strategy. Some eggs hatch spontaneously and rhythmically in an LD12:12 regime during the last few hours of daylight but their low hatching success rate suggests that other eggs may require a different cue provided by the host. Larvae are ciliated, can swim, lack pigmented eyespots, show no photo-response and remain active for only a few hours at 22ºC. Experiments using the fluorescent dye, 5(6)-carboxyfluorescein diacetate N-succinimidyl ester (CFSE) revealed B. octohamatus on gills of T. fasciata within 30 min of exposure to the host. This provides strong evidence that larvae invade the gills directly via the host’s inhalant respiratory current and do not migrate after initial attachment elsewhere. Five rhinobatid species (Aptychotrema vincentiana, T. fasciata, Trygonorrhina sp. A, A. rostrata and Rhinobatos typus), with overlapping distributions spanning west, south and east Australian coastal waters were surveyed for monogeneans at four locations between Fremantle, Western Australia and Stradbroke Island, Queensland. Genetic homogeneity, using the mitochrondrial gene Cytochrome b (cytb) and the nuclear marker, Elongation factor-1 alpha (EF1a), was observed for all Branchotenthes and Calicotyle specimens irrespective of collection locality or rhinobatid species. Genetic homogeneity was observed for Pseudoleptobothrium specimens collected in western and southern Australia. However, local genetic heterogeneity was apparent among Pseudoleptobothrium specimens collected from two sympatric host species in New South Wales. Analyses revealed a highly divergent clade, indicating a morphologically cryptic, ancestral species. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1323070 / Thesis (Ph.D.) -- University of Adelaide, School of Earth and Environmental Sciences, 2008