Academic literature on the topic 'Fish; Parasites; Parasitology'

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Journal articles on the topic "Fish; Parasites; Parasitology":

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Costa, Graça, Luísa Costa, Maria João Santos, and E. Melo-Moreira. "A Review of the Parasites of Deep-Water Fishes from Macaronesian Islands, North-East Atlantic Ocean." Open Parasitology Journal 6, no. 1 (July 31, 2018): 17–31. http://dx.doi.org/10.2174/1874421401806010017.

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The deep-water fish fauna of Macaronesian islands is currently estimated at a total of 1029 different fish species, but records of both ecto- and endoparasites are from only about 30 of those species. This fact presents an exciting field of research for scientists interested in fish parasitology, by exploring the structure of parasite communities and their connections with ecological and oceanographic variables. Research on the effect of climatic changes on the parasite faunas, on the occurrence of fish parasites in man and its impact on human health, has not been carried out to date. The present review aims to collate our present knowledge about the parasites of deep-water fishes of Macaronesia, and to suggest directions for future research on the parasites of fishes from the deepwater realm. A checklist of the parasites infecting the deep-water fishes from this region is included.
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Nikolić, Vera, Branka Bilbija, Zlatko Nedić, Predrag Simonović, and Vesna Djikanović. "First record of Azygia robusta (Odhner, 1911) (Trematoda: Digenea: Azygiidae) in brown trout (Salmo trutta) in the VRBAS River." Croatian Journal of Fisheries 76, no. 2 (June 1, 2018): 85–88. http://dx.doi.org/10.2478/cjf-2018-0011.

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Abstract The investigation of fish parasites in Bosnia and Herzegovina in recent years became significant, and therefore new records of parasitic trematodes and their hosts are important for better understanding of fish parasitology and pathology. In this study 41 parasitic specimens were collected and the basic taxonomical characters were measured (body length and width, diameter of oral and ventral sucker, length and width of pharynx, ovary length and width, testes length and width and eggs length and width). After the sampling of the parasites, they were collected and conserved in 70% ethanol. After that procedure the aforementioned characters were measured using Digimizer Image Analyzer Version 4.1. After all measurements, the trematode parasite Azygia robusta was confirmed for the first time on brown trout Salmo trutta. This first record was found in the Vrbas River near Banja Luka, Bosnia and Herzegovina (Sava River Basin). Former records of this parasite in Europe were observed on other salmonid fish species, as huchen Hucho hucho. This new record should be very important part of data of fish parasitology in Bosnia and Herzegovina.
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Lester, R. J. G., and R. McVinish. "Does moving up a food chain increase aggregation in parasites?" Journal of The Royal Society Interface 13, no. 118 (May 2016): 20160102. http://dx.doi.org/10.1098/rsif.2016.0102.

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General laws in ecological parasitology are scarce. Here, we evaluate data on numbers of fish parasites published by over 200 authors to determine whether acquiring parasites via prey is associated with an increase in parasite aggregation. Parasite species were grouped taxonomically to produce 20 or more data points per group as far as possible. Most parasites that remained at one trophic level were less aggregated than those that had passed up a food chain. We use a stochastic model to show that high parasite aggregation in predators can be solely the result of the accumulation of parasites in their prey. The model is further developed to show that a change in the predators feeding behaviour with age may further increase parasite aggregation.
4

Briones, J. C. A., R. D. S. Papa, G. A. Cauyan, and M. Urabe. "Research Note. The first report of three acanthocephalan parasite species isolated from Philippine fishes." Helminthologia 52, no. 4 (December 1, 2015): 384–89. http://dx.doi.org/10.1515/helmin-2015-0061.

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Summary Three acanthocephalan parasites, namely Neoechinorhynchus (Neoechinorhynchus) quinghaiensis, Rhadinorhynchus ganapatti, and Bolbosoma sp. are reported for the first time from Philippine fishes. N. (N.) quinghaiensis (Neoechinorhynchidae) may have been introduced into the country through the importation of carp species from China, where this parasite was first described and is presumed to be naturally occurring. The adult worms of R. ganapatti and the isolated cystacanth of Bolbosoma sp. represent the first record of parasites from both the family Rhadinorhynchidae and Polymorphidae in Philippine waters, respectively. These three new records encompass a third of all listed acanthocephalan parasites that have been reported in Philippine fish species to date, highlighting the need for more biodiversity-focused parasitology research, in light of potentially numerous more undocumented parasite species.
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Khan, R. A. "Crude Oil and Parasites of Fish." Parasitology Today 3, no. 4 (April 1987): 99–100. http://dx.doi.org/10.1016/0169-4758(87)90043-3.

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Khalil, Mokhtar Ibrahim, Ismail Saad El-Shahawy, and Hussein Saad Abdelkader. "Studies on some fish parasites of public health importance in the southern area of Saudi Arabia." Revista Brasileira de Parasitologia Veterinária 23, no. 4 (December 2014): 435–42. http://dx.doi.org/10.1590/s1984-29612014082.

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The present study was the first attempt to survey the diversity of fish zoonotic parasites in the southern region of Saudi Arabia, particularly the Najran area, from October 2012 to October 2013. Approximately 163 fish representing seven species (two of freshwater fish and five of marine fish) were examined for fish-borne trematode metacercariae using the compression technique, and for zoonotic nematode larvae. Adult flukes were obtained from cats experimentally infected with the metacercariae on day 25 post-infection The prevalence of each parasite species was recorded. The parasites found belonged to two taxa: Digenea (Heterophyes heterophyes and Haplorchis pumilio) in muscle tissue; and nematodes (larvae of Capillaria sp.) in the digestive tract. The morphological characteristics of the fish-borne trematode metacercariae and their experimentally obtained adults were described. This is the first report of these parasites in fish in Saudi Arabia. Moreover, Myripristis murdjan presented higher prevalence of Capillaria sp. infection (22.7%), while Haplorchis pumilio was the dominant metacercarial species (7.9%). Although the number of documented cases continues to increase, the overall risk of human infection is slight. The increasing exploitation of the marine environment by humans and the tendency to reduce cooking times when preparing seafood products both increase the chances of becoming infected with these parasites. Furthermore, our results indicate that certain fish production systems are at risk of presenting fish zoonotic parasites, and that control approaches will benefit from understanding these risk factors.
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Abdybekova, A. M., A. A. Abdibayeva, N. N. Popov, A. A. Zhaksylykova, B. I. Barbol, B. Zh Bozhbanov, and P. R. Torgerson. "Helminth parasites of fish of the Kazakhstan sector of the Caspian Sea and associated drainage basin." Helminthologia 57, no. 3 (August 5, 2020): 241–51. http://dx.doi.org/10.2478/helm-2020-0030.

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SummaryThe northern section of the Caspian Sea is an important fishery for Kazakhstan. In the present study, a total of 606 individuals of 13 fish species were collected. For each of Abramis brama, Alosa saposchnikowii, Atherina boyeri caspia, Carassius auratus, Clupeonella cultriventris, Cyprinus carpio, Liza aurata, Leuciscus aspius, Rutilus rutilus caspius, Sander lucioperca, Sander marinus, and Sander volgensis 50 individuals were examined whilst 6 individuals of Siluris glanis were examined. The nematode parasite Anisakis schupakovi was found in all fish species except Liza aurata, Carassius aurata, Cyprinus carpio and Rutilus rutilus at intensities ranging from 1 to 1197 parasites per infected fish. Trematodes of family Diplostomidae were also isolated from all fish except Alosa saposhnikowii, Clupeonella cultriventris and Sander marinus at intensities ranging from 1 to 242 parasites per infected fish. Other parasites found included the nematodes Porrocaecum reticulatum, Contracecum sp, Camallanus sp and Eustrongylus excisus; the cestodes Neogryporhynchus cheilancristrotus, Bothriocephalus opsariichthydis; the monogenean parasites Mazocraes alosa, Ancyrocephalus paradocus, Gyrodactylus spp, Ligophorus vanbenedenii and Dactylogyrus spp; and the crustacean parasites Ergasilus sp. and Synergasilus sp. In addition one unidentified species of nematode and a bivalve of the genus Unio was recovered from Rutilus rutilus caspius. There was no association between Fulton’s condition index and intensity of parasite infection.
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Akoll, P., M. L. Fioravanti, R. Konecny, and F. Schiemer. "Infection dynamics ofCichlidogyrus tilapiaeandC. sclerosus(Monogenea, Ancyrocephalinae) in Nile tilapia (Oreochromis niloticusL.) from Uganda." Journal of Helminthology 86, no. 3 (July 27, 2011): 302–10. http://dx.doi.org/10.1017/s0022149x11000411.

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AbstractThe infection dynamics of the gill monogeneansCichlidogyrus tilapiaeandC. sclerosusonOreochromis niloticuswith respect to habitat type (reservoir, stream, ponds and cages), host sex, size and seasons was determined between January and November 2008. During the study period, 45.2% of the 650 fish examined were infected withCichlidogyrusspp. The infected hosts harboured an average of 8.6 ± 3.4 parasites/fish. Across habitat types, the proportion of infected fish was not statistically different. In contrast, the number of parasites recorded on infected fish from different habitat types differed significantly. The highest parasite number was recorded in reservoir-dwelling fish and lowest in stream-dwelling hosts. Concerning sex, more femaleO. niloticuswere infected and harboured a high number of parasites than male and sexually undifferentiated fish. A weak negative relationship was found between rainfall and monthly parasite infections. However, a higher number of parasites and proportion of infected hosts were found during dry than in wet seasons, except in ponds. Results of this study show that differential exposure due to changes in fish behaviour associated with habitat modification and sex may account for the infection difference across the sampled sites. Meanwhile, rainfall and the associated hydrological events are important factors regulating monogenean infections in tropical aquatic environments. The continuous presence ofCichlidogyrusspp. in fish provides evidence of possible parasite outbreaks, indicating the application of biosecurity measures as crucial for the success of intensive fish farming.
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Muñoz, G., and M. Rebolledo. "Comparison of the parasite community of two notothens, Notothenia rossii and N. coriiceps (Pisces: Nototheniidae), from King George Island, Antarctica." Journal of Helminthology 93, no. 6 (October 1, 2018): 732–37. http://dx.doi.org/10.1017/s0022149x18000858.

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AbstractIn this study, we analysed and compared the whole parasite community from the fish Notothenia rossii and Notothenia coriiceps collected from Fildes Bay at King George Island, Antarctica, during January–February 2017 in a field campaign supported by the Chilean Antarctic Institute. The fish samples collected were 45 specimens of N. rossii and 22 of N. coriiceps, with total lengths averaging 29.7 ± 5.3 cm and 32.5 ± 3.2 cm, respectively. Fish were dissected to collect their internal and external parasites. All the fish were parasitized; 13 taxa were found in N. rossii and 12 taxa in N. coriiceps. Acanthocephalans, mainly Metacanthocephalus johnstoni and Aspersentis megarhynchus, were the most abundant and prevalent parasites in both fish species. The abundance and richness of the parasite infracommunity increased with the host body length only in N. rossii. Twelve parasitic taxa were shared by both notothen species. Abundance and prevalence of parasitic taxa, as well as the average richness and abundance of the parasite infracommunities were mostly similar between the two fish species. Parasite compositions of N. coriiceps reported in published studies from King George Island were relatively comparable to our sample. We concluded that the two congeneric and sympatric fish species had highly similar parasite communities, which indicates that they use resources in a similar way, thus allowing them to become parasitized with the same parasitic species and in the same abundances. All parasites recorded in this study have been found in several other fish species; therefore, parasites from notothens are considered to be generalists.
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MUÑOZ, G., A. S. GRUTTER, and T. H. CRIBB. "Endoparasite communities of five fish species (Labridae: Cheilininae) from Lizard Island: how important is the ecology and phylogeny of the hosts?" Parasitology 132, no. 3 (December 7, 2005): 363–74. http://dx.doi.org/10.1017/s0031182005009133.

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The parasite community of animals is generally influenced by host physiology, ecology, and phylogeny. Therefore, sympatric and phylogenetically related hosts with similar ecologies should have similar parasite communities. To test this hypothesis we surveyed the endoparasites of 5 closely related cheilinine fishes (Labridae) from the Great Barrier Reef. They were Cheilinus chlorourus, C. trilobatus, C. fasciatus, Epibulus insidiator and Oxycheilinus diagramma. We examined the relationship between parasitological variables (richness, abundance and diversity) and host characteristics (body weight, diet and phylogeny). The 5 fishes had 31 parasite species with 9–18 parasite species per fish species. Cestode larvae (mostly Tetraphyllidea) were the most abundant and prevalent parasites followed by nematodes and digeneans. Parasites, body size and diet of hosts differed between fish species. In general, body weight, diet and host phylogeny each explained some of the variation in richness and composition of parasites among the fishes. The 2 most closely related species, Cheilinus chlorourus and C. trilobatus, had broadly similar parasites but the other fish species differed significantly in all variables. However, there was no all-encompassing pattern. This may be because different lineages of parasites may react differently to ecological variables. We also argue that adult parasites may respond principally to host diet. In contrast, larval parasite composition may respond both to host diet and predator-prey interactions because this is the path by which many parasites complete their life-cycles. Finally, variation in parasite phylogeny and parasite life-cycles among hosts likely increase the complexity of the system making it difficult to find all-encompassing patterns between host characteristics and parasites, particularly when all the species in rich parasite communities are considered.

Dissertations / Theses on the topic "Fish; Parasites; Parasitology":

1

Douglas, Polly Joanne. "Studies on Entobdella hippoglossi (Muller, 1776) (Monogenea) and Lepeophtheirus hippoglossi (Kroyer, 1837) (Copepoda) : ectoparasites of Atlantic halibut (Hippoglossus hippoglossus L., 1758)." Thesis, University of Stirling, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391470.

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Mahmud, Muayad Ahmed. "Evolutionary ecology of virulence in a fish parasite." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/32945/.

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Virulence (parasite- induced host fitness reduction) is thought to correlate positively with pathogen reproduction rates, but its relationship with pathogen transmission is likely to be determined by a trade- off between the costs and benefits of harming hosts. This project aims to investigate factors which affect host-parasite interactions and particularly those which may play a role in virulence evolution. In doing so, it describes experiments carried out using a monogenean ectoparasitic flatworm (Gyrodactylus arcuatus) and its three-spined stickleback (Gasterosteus aculeatus) host. Populations of this fish species experience a range of both environmental and ecological conditions. Such environmental heterogeneity has been found to drive changes in fish phenotypic traits such as morphology, behaviour, life history and physiology which may consequently affect parasite fitness. I demonstrate that under these conditions, parasite strains from different host populations evolve variation in virulence levels. I also reveal that coevolution in this host parasite system is likely to lead to local adaptation of G. arcuatus at the host population level. I show that competition between parasite species sharing a single host leads to increased parasite reproduction rates, but it shortens the infection time which may be due to earlier stimulation of host immune responses. I show that virulence is neither influenced by the population density, immunity (epidermal mucus), social behaviour of fish hosts nor the natural parasite life expectancy. Lastly, I find that virulence in this system is negatively influenced by the density of stickleback predators and positively associated with loch water pH. Taken together, these results suggest that in this host parasite system, both ecological and environmental factors which drive phenotypic changes in fish hosts may evolutionarily feedback to affect parasite virulence.
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Woodstock, Matthew. "Trophic Ecology and Parasitism of a Mesopelagic Fish Assemblage." Thesis, NSUWorks, 2018. https://nsuworks.nova.edu/occ_stuetd/469.

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Mesopelagic (open ocean, 200-1000 m depth) fishes are important consumers of zooplankton and are prey of oceanic predators. Some mesopelagic fishes (e.g., myctophids and stomiids) undertake a diel vertical migration where they ascend to the near-surface waters during the night to feed and descend into the depths during the day to avoid predators. Other mesopelagic fishes (e.g., Sternoptyx spp.) do not vertically migrate and remain at deep depths throughout the day. While in the epipelagic zone (surface – 200 m depth), vertically migrating fishes become prey to upper-trophic level predators, such as: tunas and billfishes. Benthic fishes (e.g., macrourids) often vertically migrate as well, ascending into the pelagic zone to feed on pelagic organisms. Fishes of different depths and vertical migration habits likely have a different ecological role in food webs. The relationship between parasites and gut contents provides insights into ecological processes occurring within assemblages, as prey items are often vectors for parasites. This study examined the differences between the prey items present in the gastrointestinal cavity and parasites of 26 mesopelagic fish species in the Gulf of Mexico. Results showed that based on the proportionally dominant prey items per species, six different feeding guilds existed within this assemblage, five based on planktivory: copepodivores, predators of copepods and other zooplankton, predators of copepods and euphausiids, gelatinivores, generalists, crustacean decapodivores, and upper-trophic level predators. Larger fishes preyed on larger prey items and harbored more parasites. Sigmops elongatus exhibited an ontogenetic diet shift at 75 mm standard length, progressing from eating primarily copepods at small sizes to eating primarily euphausiids at large sizes. Compared to similar studies, this study revealed a higher parasitic infestation by trematodes, an endoparasite (parasite within the host) class often restricted to nearshore hosts, in Gulf of Mexico fishes. Helicometrina nimia, the dominant parasite of the gempylid Nealotus tripes, has not previously been recorded in hosts below 200 m depth, suggesting a foodweb pathway that transitions from nearshore to offshore. These data can be used to develop and refine models aimed at understanding ecosystem structure and connectivity.
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Aguiar, Julio Cesar Cenci de. "Dactylogyr?deos (Platyhelminthes, Monogenea) parasitos de tr?s esp?cies de peixes da fam?lia Pimelodidae (Siluriformes, Pimelodidae) do rio Mogi Gua?u, Pirassununga, SP, Brasil." Universidade Federal Rural do Rio de Janeiro, 2011. https://tede.ufrrj.br/jspui/handle/jspui/1167.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
This research aimed to study the taxonomy of dactylogyrids species associated with three host species: Pimelodus maculatus Lacep?de, 1803, Pimelodus heraldoi Azpelicueta, 2001 and Iheringichthys labrosus (L?tken, 1874) from Cachoeira de Emas, Mogi Gua?u River, Pirassununga, S?o Paulo, Brazil. The fishes were collected using nets and cast nets in the Cachoeira de Emas and transported to the laboratory of do Centro Nacional de Pesquisa da Conserva??o de Peixes Continentais, Instituto Chico Mendes para Conserva??o da Biodiversidade CEPTA/ICMBio, where they were examined. The parasites were fixed in 4% formalin and processed for identification in the Laboratory of Fish Parasitology of UFRRJ. Fourteen new locality records were included, 12 of them are new hosts records. Among these, five new species were proposed. Ameloblastella sp. n 1 collected from P. maculatus differs from its congeners by having a MCO (Male copulatory organ) with 2 rings, ventral and dorsal anchors with curved shaft and curved point toward to the base and a vagina with a ligule-like structure at the vestibule roof and a duct that leads into the distal portion of the vaginal vestibule. Ameloblastella sp. n. 2 is distinguished from the other species of the genus by a MCO with 2 rings, accessory piece distally divided into two subunits, and anchors with long points surpassing the tip of the superficial root. Seven Demidospermus species were recorded and commented based mainly on morphological and morphometric variations. Pavanelliella sp. n. 1, collected from nasal cavities of P. maculatus differs from its congeners by having a MCO with 2?4 rings and anteriorly directed vagina containing five irregular rings around the vestibule. Pavanelliella sp. n. 2 collected from P. heraldoi, was distinguished from all its congeners by having a robust MCO with 2-3 rings, an accessory piece with an irregular distal portion resembling flames, vaginal canal sinuous with 2-3 loops and vaginal vestibule not differentiated. Pavanelliella sp. n. 3 collected from P. heraldoi is separated from the other species of the genus by having a MCO with 4 rings (2 anterior and 2 posterior to accessory piece), accessory piece with bifurcated distal end, with one end hook-like, vaginal canal with 3 loops and vaginal vestibule not differentiated. Pavanelliella sp. n. 1 showed the highest values of prevalence, mean intensity and mean abundance infestation. Besides the three new Pavanelliella species proposed, some details about the morphology of P. pavanellii were added. Additionally a proposal to amend the diagnosis of the genus Demidospermus and a key to diagnosis of the Dactylogyrinea genera whose haptor presents no bar and no anchors and for Pavanelliella species are included herein.
Visando contribuir para o conhecimento da biodiversidade da regi?o Neotropical, a presente pesquisa teve como objetivos realizar o estudo taxon?mico das esp?cies de dactylogyr?deos associadas a tr?s esp?cies de hospedeiros: Pimelodus maculatus Lacep?de, 1803, Pimelodus heraldoi Azpelicueta, 2001 e Iheringichthys labrosus (L?tken, 1874) de Cachoeira de Emas, rio Mogi Gua?u, Pirassununga, S?o Paulo. Os peixes foram coletados utilizando redes e tarrafas na localidade de cachoeira de Emas e tranportados at? o laborat?rio do Centro Nacional de Pesquisa da Conserva??o de Peixes Continentais, Instituto Chico Mendes para Conserva??o da Biodiversidade CEPTA/ICMBio, onde foram examinados. Os parasitos coletados foram fixados em formol a 4% e processados para identifica??o no laborat?rio de Parasitologia de Peixes da UFRRJ. Cinco esp?cies foram propostas como novas e quatorze novos registros de localidade foram apresentados, dos quais 12 representam novos registros para hospedeiros. Ameloblastella paranaensis, encontrada nas br?nquias das tr?s esp?cies de hospedeiros examinadas, ? registrada e comentada em detalhes. Ameloblastella sp. n. 1 coletada em P. maculatus difere de seus cong?neres por apresentar um OCM (?rg?o copulat?rio masculino) com 2 an?is, ?ncoras ventral e dorsal com l?mina curva e ponta recurvada no sentido da base e uma vagina com uma estrutura epivestibular em forma de l?gula e um ducto que desemboca na por??o distal do vest?bulo vaginal. Ameloblastella sp. n. 2 coletada em P. heraldoi se distingue das demais esp?cies do g?nero por apresentar um OCM com 2 an?is, pe?a acess?ria distalmente dividida em duas subunidades, e ?ncoras com pontas longas ultrapassando a extremidade da raiz superficial. Sete esp?cies de Demidospermus foram registradas e comentadas em detalhes. Pavanelliella sp. n. 1, coletada das cavidades nasais de P. maculatus se diferencia de seus cong?neres por possuir um OCM com 2?4 an?is e a vagina anteriormente direcionada contendo aproximadamente cinco an?is irregulares ao redor do vest?bulo vaginal. Pavanelliella sp. n. 2 coletada em P. heraldoi, se distingui de todos seus cong?neres por apresentar um OCM robusto com 2?3 an?is, uma pe?a acess?ria de extremidade distal irregular em forma de flamas, um canal vaginal sinuoso com 2?3 voltas na por??o distal e vest?bulo vaginal n?o diferenciado. Pavanelliella sp. n. 3 coletada em P. heraldoi se diferencia das demais esp?cies do g?nero por ter um OCM com 4 an?is (2 anteriores e 2 posteriores a pe?a acess?ria), uma pe?a acess?ria com uma extremidade distal bifurcada com uma das pontas em forma de gancho, canal vaginal sinuoso com 3 voltas na sua por??o distal e vest?bulo vaginal n?o diferenciado. Pavanelliella sp. n. 1 foi a que apresentou os maiores valores de preval?ncia, intensidade m?dia e abund?ncia m?dia de infesta??o. Al?m das tr?s novas esp?cies de Pavanelliella propostas, alguns caracteres morfol?gicos s?o adicionados a P. pavanellii. Adicionalmente apresenta-se uma proposta de emenda da diagnose do g?nero Demidospermus e uma chave para diagn?stico dos g?neros de Dactylogyrinea cujo haptor n?o apresenta barras e nem ?ncoras e para as esp?cies de Pavanelliella. O presente estudo revela a riqueza parasit?ria para uma localidade na qual nada se sabia a respeito desses dactylogyr?deos.
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Azevedo, Rodney Kozlowiski de. "Composi??o e Estrutura das Comunidades Parasit?rias do Acar? Geophagus brasiliensis (Quoy e Gaimard, 1824) e do Apaiar? Astronotus ocellatus (Cope, 1872) do Rio Guandu, Estado do Rio de Janeiro, Brasil." Universidade Federal Rural do Rio de Janeiro, 2006. https://tede.ufrrj.br/jspui/handle/tede/764.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
Between December 2004 to November 2005, were collected 50 specimens of Geophagus brasiliensis (Quoy e Gaimard, 1824) and 35 specimens of Astronotus ocellatus (Cope, 1872) from the River Guandu, near to the Station of Treatment of water (ETA) (22?48'32"S, 43?37'35"W), State of Rio de Janeiro, for the study of their communities of metazoan parasites. In G. brasiliensis, nine species of metazoan parasites were collected: 3 digeneans, 1 nematode, 2 hirudineans, 2 acantocephalans and 1 gloquidian. Most of parasite specimens collected were digeneans (95.9 %), being Posthodiplostomum macrocotyle Dubois, 1937 (metacercariae) founded in the eyes the more prevalent species (88.0%) and with highest mean intensity value (12.4), followed for the metacercariae of Austrodiplostomum compactum (Lutz, 1928) (metacercariae) and the hirudinean of family Glossiphoniidae showed prevalence of 14.0% and 10.0% respectively. In A. ocellatus, six species of metazoan parasites were collected: 1 monogenean, 1 nematode, 1 hirudinean, 1 acantocephalan, 1 crustacean, and 1 gloquidian. Most of parasite specimens collected were monogenetic (91.9 %), being Gussevia sp. founded in the gills the more prevalent species (71.4%) and with highest mean intensity value (17.6), followed for the acanthochepalan Polymorphus sp. showed prevalence of 17.1%. The parasite species of G. brasiliensis and A. ocellatus showed the typical aggregated pattern of distribution.
Entre os meses de dezembro de 2004 ? novembro de 2005 foram coletados 50 esp?cimes de Geophagus brasiliensis (Quoy e Gaimard, 1824) e 35 esp?cimes de Astronotus ocellatus (Cope, 1872) provenientes do Rio Guandu, pr?ximo ? barragem da Esta??o de tratamento de ?gua (ETA) (22?48 32 S, 43?37 35 O), Estado do Rio de Janeiro, para o estudo de suas comunidades de metazo?rios parasitos. Em G. brasiliensis foram encontradas nove esp?cies de metazo?rios parasitos: 3 digen?ticos, 1 nemat?ide, 2 hirud?neos, 2 acantoc?falos e 1 larva gloqu?dia. A maioria dos esp?cimes de parasitos coletados foram digen?ticos (95,9%), sendo Posthodiplostomum macrocotyle Dubois, 1937 (metacerc?ria) a esp?cie mais prevalente (88,0%) e com a maior intensidade m?dia (12,4) sendo a maioria dos esp?cimes encontrados parasitando os olhos, seguido pelo digen?tico Austrodiplostomum compactum (Lutz, 1928) (metacerc?ria) e pelo hirud?neo da fam?lia Glossiphoniidae, que apresentaram preval?ncias de 14,0% e 10,0% respectivamente. Em A. ocellatus foram encontradas seis esp?cies de metazo?rios parasitos: 1 monogen?tico, 1 nemat?ide, 1 hirud?neo, 1 acantoc?falo, 1 crust?ceo e 1 larva gloqu?dia. A maioria dos esp?cimes de parasitos coletados foram monogen?ticos (91.9%), sendo Gussevia sp. a esp?cie mais prevalente (71,4%) e com a maior intensidade m?dia (17,6) sendo todos os esp?cimes encontrados parasitando as br?nquias, seguido pelo acantoc?falo Polymorphus sp. que apresentou uma preval?ncia de 17,1%. Os parasitos encontrados em G. brasiliensis e A. ocellatus apresentaram o t?pico padr?o de distribui??o agregado.

Books on the topic "Fish; Parasites; Parasitology":

1

Grabda, Jadwiga. Marine fish parasitology: An outline. Weinheim: VCH, 1991.

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2

McDonald, T. E. Synopsis of the parasites of fishes of Canada. Ottawa: National Research Council of Canada, 1995.

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Parasitic diseases of fish. Dyfed: Samara in association with the British Society for Parasitology and the Linnean Society of London, 1994.

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4

Manuel, Vidal-Martinez Victor, ed. Atlas of the helminth parasites of cichlid fish of Mexico. [Praha]: Academia, 2001.

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Martinez, Victor Manuel Vidal, Maria Leopoldina Aguirre Macdeo, Tomas Scholz, David Gonzalez Solis, and Edgar Fernando Mendoza Franco. Atlas of the Helminth Parasites of Cichlid Fish to Mexico. Academia, 2001.

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McDonald, T. E., and L. Margolis. Synopsis of the Parasites of Fishes of Canada (1978-1993) (Canadian Special Publication of Fisheries and Aquatic Scienc). Canadian Government Publishing, 1995.

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Book chapters on the topic "Fish; Parasites; Parasitology":

1

Mehlhorn, Heinz. "Fish Parasites." In Encyclopedia of Parasitology, 1014–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4649.

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Mehlhorn, Heinz. "Fish Parasites." In Encyclopedia of Parasitology, 1–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4649-1.

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Vidal-Martínez, Victor Manuel, Edgar Torres-Irineo, and M. Leopoldina Aguirre-Macedo. "A century (1914-2014) of studies on marine fish parasites published inThe Journal of Parasitology." In A Century of Parasitology, 57–74. Chichester, UK: John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118884799.ch5.

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Palm, Harry W. "Fish Parasites as Biological Indicators in a Changing World: Can We Monitor Environmental Impact and Climate Change?" In Progress in Parasitology, 223–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21396-0_12.

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"Glossary of Fish Parasitology Terms." In Parasites of North American Freshwater Fishes, 511–26. Ithaca, NY: Cornell University Press, 2019. http://dx.doi.org/10.7591/9781501735059-028.

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Sayyaf Dezfuli, Bahram, Luisa Giari, and Giampaolo Bosi. "Survival of metazoan parasites in fish: Putting into context the protective immune responses of teleost fish." In Advances in Parasitology, 77–132. Elsevier, 2021. http://dx.doi.org/10.1016/bs.apar.2021.03.001.

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Heuch, P. A., and T. A. Schram. "Parasites of fish: (b) Plaice/flounder and Lepeophtheirus pectoralis (Copepoda)." In Practical Exercises in Parasitology, 37–44. Cambridge University Press, 2001. http://dx.doi.org/10.1017/cbo9781139173353.006.

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THOMAS, J. "The ecology of fish parasites with particular reference to helminth parasites and their salmonid fish hosts in Welsh rivers: A review of some of the central questions." In Advances in Parasitology Volume 52, 1–154. Elsevier, 2002. http://dx.doi.org/10.1016/s0065-308x(02)52011-x.

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"Advances in Fish Tagging and Marking Technology." In Advances in Fish Tagging and Marking Technology, edited by David W. Schmarr, Ian D. Whittington, Ian D. Whittington, Jennifer R. Ovenden, and Tim M. Ward. American Fisheries Society, 2012. http://dx.doi.org/10.47886/9781934874271.ch27.

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Abstract:
<i>Abstract</i>.—This study assesses the suitability of genetic approaches, parasitology and otolith microchemistry for determining the stock structure of spotted chub mackerel <i>Scomber australasicus </i>in Australasian waters and establishes protocols for using these techniques to determine variability within and among putative stocks. Seventy-five fish from three locations across the geographical distribution of <i>S. australasicus </i>in Australian waters (SE Queensland, South Australia and SE Western Australia) and one location in New Zealand were examined. Genetics and parasite assemblage were analyzed for all fish; otolith microchemistry of Australian fish was also examined. Techniques were successfully developed to extract and amplify a segment of the mtDNA control region, and results showed significant genetic heterogeneity among fish from Western Australia, Queensland, and New Zealand. Parasite analysis identified several taxa that are suitable for use as biological tags and enabled discrimination of fish collected from the four locations. Studies of otolith microchemistry using LA-ICP-MS had sufficient power to distinguish fish from the three Australian locations. This study suggests that there are multiple stocks of <i>S. australasicus </i>within Australian waters, proposes protocols for future studies of finer scale stock structure, and discusses the efficacy of each technique for stock discrimination.

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