Base de dados : MEDLINE
Pesquisa : B01.050.500.131.365.070 [Categoria DeCS]
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[PMID]:27492197
[Au] Autor:Zhao D; Borkhanuddin MH; Wang W; Liu Y; Cech G; Zhai Y; Székely C
[Ad] Endereço:Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, China.
[Ti] Título:The life cycle of Thelohanellus kitauei (Myxozoa: Myxosporea) infecting common carp (Cyprinus carpio) involves aurantiactinomyxon in Branchiura sowerbyi.
[So] Source:Parasitol Res;115(11):4317-4325, 2016 Nov.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Thelohanellus kitauei is a freshwater myxosporean parasite causing intestinal giant cystic disease of common carp. To clarify the life cycle of T. kitauei, we investigated the oligochaete populations in China and Hungary. This study confirms two distinct aurantiactinomyxon morphotypes (Aurantiactinomyxon type 1 and Aurantiactinomyxon type 2) from Branchiura sowerbyi as developmental stages of the life cycle of T. kitauei. The morphological characteristics and DNA sequences of these two types are described here. Based on 18S rDNA sequence analysis, Aurantiactinomyxon type 1 (2048 bp) and Aurantiactinomyxon type 2 (2031 bp) share 99.2-99.4 %, 99.8-100 % similarity to the published sequences of T. kitauei, respectively. The 18S rDNA sequences of these two aurantiactinomyxon morphotypes share 99.4 % similarity, suggesting intraspecific variation within the taxon, possibly due to geographic origin. Phylogenetic analyses demonstrate the two aurantiactinomyxon types clustered with T. kitauei. Regardless, based on 18S rDNA synonymy, it is likely that Aurantiactinomyxon type 1 and 2 are conspecific with T. kitauei. This is the fourth elucidated two-host life cycle of Thelohanellus species and the first record of T. kitauei in Europe.
[Mh] Termos MeSH primário: Arguloida/parasitologia
Carpas/parasitologia
Doenças dos Peixes/parasitologia
Estágios do Ciclo de Vida
Myxozoa/classificação
Myxozoa/crescimento & desenvolvimento
Oligoquetos/parasitologia
[Mh] Termos MeSH secundário: Animais
China
DNA Ribossômico/genética
Europa (Continente)
Hungria
Intestinos/parasitologia
Dados de Sequência Molecular
Myxozoa/genética
Myxozoa/isolamento & purificação
Filogenia
RNA Ribossômico 18S/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Ribosomal); 0 (RNA, Ribosomal, 18S)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160806
[St] Status:MEDLINE


  2 / 78 MEDLINE  
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[PMID]:27368542
[Au] Autor:Mohapatra A; Karan S; Kar B; Garg LC; Dixit A; Sahoo PK
[Ad] Endereço:Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, 751002, India.
[Ti] Título:Apolipoprotein A-I in Labeo rohita: Cloning and functional characterisation reveal its broad spectrum antimicrobial property, and indicate significant role during ectoparasitic infection.
[So] Source:Fish Shellfish Immunol;55:717-28, 2016 Aug.
[Is] ISSN:1095-9947
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Apolipoprotein A-I (ApoA-I) is the most abundant and multifunctional high-density lipoprotein (HDL) having a major role in lipid transport and potent antimicrobial activity against a wide range of microbes. In this study, a complete CDS of 771 bp of Labeo rohita (rohu) ApoA-I (LrApoA-I) encoding a protein of 256 amino acids was amplified, cloned and sequenced. Tissue specific transcription analysis of LrApoA-I revealed its expression in a wide range of tissues, with a very high level of expression in liver and spleen. Ontogenic study of LrApoA-I expression showed presence of transcripts in milt and 3 h post-fertilization onwards in the larvae. The expression kinetics of LrApoA-I was studied upon infection with three different types of pathogens to elucidate its functional significance. Its expression was found to be up-regulated in the anterior kidney of L. rohita post-infection with Aeromonas hydrophila. Similarly following poly I:C (poly inosinic:cytidylic) stimulation, the transcript levels increased in both the anterior kidney and liver tissues. Significant up-regulation of LrApoA-I expression was observed in skin, mucous, liver and anterior kidney of the fish challenged with the ectoparasite Argulus siamensis. Immunomodulatory effect of recombinant LrApoA-I (rApoA-I) produced in Escherichia coli was demonstrated against A. hydrophila challenge in vivo. L. rohita administered with rApoA-I at a dose of 100 µg exhibited significantly higher protection (∼55%) upon challenge with A. hydrophila 12 h post-administration of the protein, in comparison to that observed in control group, along with higher level of expression of immune-related genes. The heightened expression of ApoA-I observed post-infection reflected its involvement in immune responses against a wide range of infections including bacterial, viral as well as parasitic pathogens. Our results also suggest the possibility of using rApoA-I as an immunostimulant, particularly rendering protection against A. hydrophila.
[Mh] Termos MeSH primário: Apolipoproteína A-I/genética
Cyprinidae
Ectoparasitoses/veterinária
Doenças dos Peixes/genética
Proteínas de Peixes/genética
Infecções por Bactérias Gram-Negativas/veterinária
[Mh] Termos MeSH secundário: Aeromonas hydrophila/fisiologia
Sequência de Aminoácidos
Animais
Apolipoproteína A-I/química
Apolipoproteína A-I/metabolismo
Arguloida/fisiologia
Clonagem Molecular
DNA Complementar/genética
DNA Complementar/metabolismo
Ectoparasitoses/genética
Ectoparasitoses/imunologia
Ectoparasitoses/parasitologia
Doenças dos Peixes/imunologia
Doenças dos Peixes/microbiologia
Doenças dos Peixes/parasitologia
Proteínas de Peixes/química
Proteínas de Peixes/metabolismo
Infecções por Bactérias Gram-Negativas/genética
Infecções por Bactérias Gram-Negativas/imunologia
Infecções por Bactérias Gram-Negativas/microbiologia
Filogenia
Poli I-C/farmacologia
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Alinhamento de Sequência/veterinária
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Apolipoprotein A-I); 0 (DNA, Complementary); 0 (Fish Proteins); 0 (RNA, Messenger); O84C90HH2L (Poly I-C)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160703
[St] Status:MEDLINE


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[PMID]:27317322
[Au] Autor:Samsing F; Johnsen I; Stien LH; Oppedal F; Albretsen J; Asplin L; Dempster T
[Ad] Endereço:Sustainable Aquaculture Laboratory - Temperate and Tropical (SALTT), School of BioSciences, University of Melbourne, 3010 Victoria, Australia. Electronic address: samsing@student.unimelb.edu.au.
[Ti] Título:Predicting the effectiveness of depth-based technologies to prevent salmon lice infection using a dispersal model.
[So] Source:Prev Vet Med;129:48-57, 2016 Jul 01.
[Is] ISSN:1873-1716
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Salmon lice is one of the major parasitic problems affecting wild and farmed salmonid species. The planktonic larval stages of these marine parasites can survive for extended periods without a host and are transported long distances by water masses. Salmon lice larvae have limited swimming capacity, but can influence their horizontal transport by vertical positioning. Here, we adapted a coupled biological-physical model to calculate the distribution of farm-produced salmon lice (Lepeophtheirus salmonis) during winter in the southwest coast of Norway. We tested 4 model simulations to see which best represented empirical data from two sources: (1) observed lice infection levels reported by farms; and (2) experimental data from a vertical exposure experiment where fish were forced to swim at different depths with a lice-barrier technology. Model simulations tested were different development time to the infective stage (35 or 50°-days), with or without the presence of temperature-controlled vertical behaviour of lice early planktonic stages (naupliar stages). The best model fit occurred with a 35°-day development time to the infective stage, and temperature-controlled vertical behaviour. We applied this model to predict the effectiveness of depth-based preventive lice-barrier technologies. Both simulated and experimental data revealed that hindering fish from swimming close to the surface efficiently reduced lice infection. Moreover, while our model simulation predicted that this preventive technology is widely applicable, its effectiveness will depend on environmental conditions. Low salinity surface waters reduce the effectiveness of this technology because salmon lice avoid these conditions, and can encounter the fish as they sink deeper in the water column. Correctly parameterized and validated salmon lice dispersal models can predict the impact of preventive approaches to control this parasite and become an essential tool in lice management strategies.
[Mh] Termos MeSH primário: Arguloida/fisiologia
Infestações por Piolhos/veterinária
Salmão/parasitologia
[Mh] Termos MeSH secundário: Animais
Aquicultura
Simulação por Computador
Modelos Animais de Doenças
Doenças dos Peixes/parasitologia
Pesqueiros
Infestações por Piolhos/prevenção & controle
Modelos Lineares
Modelos Biológicos
Noruega
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170424
[Lr] Data última revisão:
170424
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160619
[St] Status:MEDLINE


  4 / 78 MEDLINE  
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[PMID]:27084477
[Au] Autor:Kar B; Moussa C; Mohapatra A; Mohanty J; Jayasankar P; Sahoo PK
[Ad] Endereço:Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, India.
[Ti] Título:Variation in susceptibility pattern of fish to Argulus siamensis: Do immune responses of host play a role?
[So] Source:Vet Parasitol;221:76-83, 2016 May 15.
[Is] ISSN:1873-2550
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Branchiuran ectoparasites of the genus Argulus can have extensive damaging effects on cultured fish. There exist no systematic studies that evaluate susceptibility or resistance of various carp species to Argulus sp. and the underlying mechanisms. The present study aimed at identifying the most susceptible and resistant cultured species, studying settlement and survival of parasite on these species, and finally unravelling the variations of immune response in both resistant and susceptible species. Fish from eight species (Labeo rohita, Cirrhinus mrigala, Catla catla, Hypophthalmichthys molitrix, Cyprinus carpio, Ctenopharyngodon idella, Carassius auratus, Labeo fimbriatus) were individually challenged with metanauplii of A. siamensis (100 metanauplii/fish) before rearing them in single tank in triplicate for 45 days. Based on the observed parasite load on each species, L. rohita was found to be the most susceptible and C. idella the resistant species. The settlement and survival of the parasite on L. rohita and C. idella was compared at 24, 48, 72 and 96h post experimental infection. Survival was significantly low at 72h onwards in C. idella indicating it is an unsuitable/poorly preferred host for A. siamensis. The inflammatory responses which are known to be related to susceptibility were analysed. Individuals of both the species were exposed to A. siamensis (100 parasites/fish), and after 24h and 3 d, skin samples directly from the attachment site and non-attachment sites were assessed for transcriptomic profiles of selected innate defence genes. Artificial skin abrasion permitted comparisons between abrasion associated injury and louse-associated injury. The inflammatory responses varied significantly between both species indicating their role in determining susceptibility of a host to A. siamensis. The expression of major histocompatibility class II and matrix metalloproteinase 2 was significantly higher in C. idella compared to L. rohita and therefore appeared to be involved in the early protective response against A. siamensis. It is essential to study the expression pattern of more participatory genes of the inflammation related pathways to understand species specific susceptible patterns.
[Mh] Termos MeSH primário: Arguloida/fisiologia
Carpas/parasitologia
Suscetibilidade a Doenças
Ectoparasitoses/parasitologia
Doenças dos Peixes/parasitologia
[Mh] Termos MeSH secundário: Animais
Carpas/imunologia
Ectoparasitoses/imunologia
Doenças dos Peixes/imunologia
Proteínas de Peixes/genética
Perfilação da Expressão Gênica
Regulação da Expressão Gênica
Pele/imunologia
Pele/lesões
Especificidade da Espécie
Análise de Sobrevida
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Fish Proteins)
[Em] Mês de entrada:1611
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160417
[St] Status:MEDLINE


  5 / 78 MEDLINE  
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[PMID]:27009886
[Au] Autor:Banerjee A; Poddar S; Manna S; Saha SK
[Ad] Endereço:Fish Biology Research Unit, Department of Zoology, Visva-Bharati, Santiniketan 731235, India.
[Ti] Título:Mutualistic association of rotifer Philodina roseola with the branchiuran fish ectoparasite Argulus bengalensis at its embryonic stage.
[So] Source:Biol Lett;12(3):20151043, 2016 Mar.
[Is] ISSN:1744-957X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Several rotifers including Philodina spp. are well known to make commensal and parasitic associations with different animals. The present investigation was carried out to decipher the relationship of Philodina roseola with a piscine ectoparasite Argulus bengalensis in its embryonic stage. Mechanical removal of the symbiont P. roseola from the argulid egg strips resulted in the complete (100%) failure in hatching. Several P. roseola individuals were found to feed on the solidified jelly coat of the eggs enabling the larvae to emerge under both laboratory and field conditions. Under the laboratory condition, the experimental removal of P. roseola did not affect the embryonic development, but it rendered the jelly coat intact; therefore, the larvae were unable to make hatching furrow and subsequently died. The results of our experiments thus prove this service-resource relationship to be a mutualism. Although the association is facultative for P. roseola, it is obligatory for Argulus spp. An act of intervention in this relationship thus offers a promising control of argulosis.
[Mh] Termos MeSH primário: Arguloida/fisiologia
Peixes/parasitologia
Rotíferos/fisiologia
Simbiose
[Mh] Termos MeSH secundário: Animais
Embrião não Mamífero
Interações Hospedeiro-Parasita
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1612
[Cu] Atualização por classe:170301
[Lr] Data última revisão:
170301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160325
[St] Status:MEDLINE


  6 / 78 MEDLINE  
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[PMID]:26991011
[Au] Autor:Banerjee A; Saha SK
[Ad] Endereço:Department of Zoology, Fish Biology Research Unit, School of Life Sciences, Visva-Bharati University, Santiniketan, West Bengal, 731235, India.
[Ti] Título:Histological and ultrastructural investigation of the female reproductive system of Argulus bengalensis Ramakrishna, 1951 (Crustacea: Branchiura).
[So] Source:J Morphol;277(6):707-16, 2016 Jun.
[Is] ISSN:1097-4687
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In order to understand branchiuran reproductive biology, it is imperative to know the sites of oogenesis and oocyte maturation, locate the accessory reproductive glands, and identify the fertilization site with the present knowledge of the sperm transfer mechanism of the genus Argulus. With these objectives, we attempted to describe the female reproductive system of Argulus bengalensis using serial histological sections through the ovaries and associated ducts in the transverse, longitudinal, and sagittal planes. The reproductive organs include a median ovary, one pair of ovarian lumina, a median oviduct, and a pair of collateral accessory glands. A duct from each of the collateral accessory glands leads into the proximal part of the median oviduct, which opens to the exterior through a genital opening at the distal end. The glandular secretion presumably contributes to the jelly coat of the egg. The ovary is bound with a tunica propria which extends further diametrically inside the ovary forming the paired lumina. The lumina are confluent into the median oviduct. Two distinct areas, the germarium and differentiating zones, are clearly distinguishable within the ovary. The tunica propria itself houses the oogonia within a matrix, serving as the germarium. Transmission electron micrograph reveals that the matrix is made of collagen. The collagen matrix confers elasticity to the tunica propria to accommodate the postvitellogenic oocytes within the ovarian lumen. The differentiating zone is situated in between the germarium: dorsally it is covered with a chromatophore layer. The ovary is ensheathed by a circum ovarian striated muscle. The presence of spermatophores in the ovarian lumen indicates the fertilization site. J. Morphol. 277:707-716, 2016. © 2016 Wiley Periodicals, Inc.
[Mh] Termos MeSH primário: Arguloida/citologia
Arguloida/ultraestrutura
Genitália Feminina/citologia
Genitália Feminina/ultraestrutura
[Mh] Termos MeSH secundário: Estruturas Animais/citologia
Estruturas Animais/ultraestrutura
Animais
Feminino
Músculos/citologia
Músculos/ultraestrutura
Ovário/citologia
Ovário/ultraestrutura
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170911
[Lr] Data última revisão:
170911
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160319
[St] Status:MEDLINE
[do] DOI:10.1002/jmor.20528


  7 / 78 MEDLINE  
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[PMID]:26936032
[Au] Autor:Häder DP; Schmidl J; Hilbig R; Oberle M; Wedekind H; Richter P
[Ad] Endereço:Department of Biology, Cell Biology, FAU, Neue Straße 9, Möhrendorf, Germany. donat@dphaeder.de.
[Ti] Título:Fighting fish parasites with photodynamically active chlorophyllin.
[So] Source:Parasitol Res;115(6):2277-83, 2016 Jun.
[Is] ISSN:1432-1955
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Water-soluble chlorophyll (chlorophyllin) was used in a phototoxic reaction against a number of fish ectoparasites such as Ichtyobodo, Dactylogyrus, Trichodina, and Argulus. Chlorophyllin is applied to the water at concentrations of several micrograms per milliliter for a predefined incubation time, and afterwards, the parasites are exposed to simulated solar radiation. Application in the dark caused only little damage to the parasites; likewise, light exposure without the addition of the photosensitizer was ineffective. In Ichthyobodo, 2 µg/mL proved sufficient with subsequent simulated solar radiation to almost quantitatively kill the parasites, while in Dactylogyrus, a concentration of about 6 µg/mL was necessary. The LD50 value for this parasite was 1.02 µg/mL. Trichodina could be almost completely eliminated at 2 µg/mL. Only in the parasitic crustacean Argulus, no killing could be achieved by a photodynamic reaction using chlorophyllin. Chlorophyllin is non-toxic, biodegradable, and can be produced at low cost. Therefore, we propose that chlorophyllin (or other photodynamic substances) are a possible effective countermeasure against several ectoparasites in ponds and aquaculture since chemical remedies are either forbidden and/or ineffective.
[Mh] Termos MeSH primário: Antiparasitários/uso terapêutico
Clorofilídios/uso terapêutico
Doenças dos Peixes/parasitologia
Doenças dos Peixes/terapia
Parasitos/efeitos dos fármacos
Fotoquimioterapia/métodos
Fármacos Fotossensibilizantes/uso terapêutico
[Mh] Termos MeSH secundário: Animais
Aquicultura
Arguloida/efeitos dos fármacos
Clorofila
Cilióforos/efeitos dos fármacos
Peixes/parasitologia
Platelmintos/efeitos dos fármacos
Spiroplasma/efeitos dos fármacos
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antiparasitic Agents); 0 (Chlorophyllides); 0 (Photosensitizing Agents); 059QF0KO0R (Water); 1406-65-1 (Chlorophyll); 1D276TYV9O (chlorophyllin)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171007
[Lr] Data última revisão:
171007
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160304
[St] Status:MEDLINE
[do] DOI:10.1007/s00436-016-4972-y


  8 / 78 MEDLINE  
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[PMID]:26515963
[Au] Autor:Pinnow P; Fabrizius A; Pick C; Burmester T
[Ad] Endereço:Institute of Zoology, University of Hamburg, Martin-Luther-King-Platz 3, 20146, Hamburg, Germany.
[Ti] Título:Identification and characterisation of hemocyanin of the fish louse Argulus (Crustacea: Branchiura).
[So] Source:J Comp Physiol B;186(2):161-8, 2016 Feb.
[Is] ISSN:1432-136X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Hemocyanin transports oxygen in the hemolymph of many arthropod species. Within the crustaceans, this copper-containing protein was thought to be restricted to Malacostraca, while other crustacean classes were assumed to employ hemoglobin or lack any respiratory protein. Only recently it has become evident that hemocyanins also occur in Remipedia and Ostracoda. Here we report for the first time the identification and characterisation of hemocyanin in the fish louse Argulus, which belongs to the class of Branchiura. This finding indicates that hemocyanin was the principal oxygen carrier in the stem lineage of the pancrustaceans, but has been lost independently multiple times in crustacean taxa. We obtained the full-length cDNA sequences of two hemocyanin subunits of Argulus foliaceus by a combination of RT-PCR, RACE and Illumina sequencing of the transcriptome. In addition, one full-length and one partial cDNA sequence were derived from the transcriptome data of Argulus siamensis. Western blot analysis confirmed the presence of at least two hemocyanin subunits in A. foliaceus, which are expressed at the mRNA level at a 1:3.5 ratio. The addition to the branchiuran hemocyanin subunits to a multiple sequence alignment of arthropod, hemocyanins improved the phylogenetic resolution within the pancrustacean hemocyanins. Malacostracan, ostracod and branchiuran hemocyanins are distinct from the hexapod and remipede hemocyanins, reinforcing the hypothesis of a close relationship of Remipedia and Hexapoda. Notably, the ostracod hemocyanins are paraphyletic with respect to the branchiuran hemocyanins, indicating ancient divergence and differential loss of distinct subunit types.
[Mh] Termos MeSH primário: Arguloida/metabolismo
Peixes/parasitologia
Hemocianinas/metabolismo
Oxigênio/metabolismo
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Sequência Conservada
Evolução Molecular
Hemocianinas/química
Hemocianinas/genética
Hemocianinas/isolamento & purificação
Dados de Sequência Molecular
Filogenia
Alinhamento de Sequência
Análise de Sequência de DNA
Análise de Sequência de Proteína
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
9013-72-3 (Hemocyanins); S88TT14065 (Oxygen)
[Em] Mês de entrada:1610
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151031
[St] Status:MEDLINE
[do] DOI:10.1007/s00360-015-0943-3


  9 / 78 MEDLINE  
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[PMID]:26306856
[Au] Autor:Kar B; Mohapatra A; Mohanty J; Sahoo PK
[Ad] Endereço:Fish Health Management Division, ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, Odisha, India. Electronic address: banya.kar@gmail.com.
[Ti] Título:Transcriptional changes in three immunoglobulin isotypes of rohu, Labeo rohita in response to Argulus siamensis infection.
[So] Source:Fish Shellfish Immunol;47(1):28-33, 2015 Nov.
[Is] ISSN:1095-9947
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Immunoglobulin heavy chains of three isotypes viz., IgM, IgD and IgT/IgZ are described in teleosts. In this study, a challenge experiment with an ectoparasite Argulus siamensis was conducted to evaluate the changes in adaptive immune response by quantitation of expression of Ig heavy chains in skin, head kidney and mucus of infected rohu, Labeo rohita. Rohu were challenged with 100 metanauplii of A. siamensis/fish. Head kidney, skin and mucus samples were collected at 0 h, 12 h, 24 h, 3 d, 7 d, 15 d and 30 d by sacrificing four fish each from infected and control groups at each time point. The expression of IgM, IgD and IgZ in these tissues were measured by reverse transcription real time quantitative PCR. IgM level was found to reach its peak significantly 30 d post-infection in head kidney tissue, while IgM transcripts were below detectable range in skin and mucus at all time points. IgZ and IgD levels were significantly up-regulated post-infection in all the three tissue samples. Early up-regulation of IgD was observed in skin and mucus, compared to head kidney. This study showed that parasitic invasion can trigger varied expressions of immunoglobulin types to provide systemic as well as local protection in the host. In particular, the appearance of high level of expression of IgZ and IgD in skin and mucus will pave the way for vaccine development against A. siamensis which feeds on those tissues.
[Mh] Termos MeSH primário: Arguloida/fisiologia
Cyprinidae
Ectoparasitoses/veterinária
Doenças dos Peixes/imunologia
Proteínas de Peixes/genética
Isotipos de Imunoglobulinas/genética
[Mh] Termos MeSH secundário: Animais
Ectoparasitoses/genética
Ectoparasitoses/imunologia
Ectoparasitoses/parasitologia
Doenças dos Peixes/genética
Doenças dos Peixes/parasitologia
Proteínas de Peixes/metabolismo
Perfilação da Expressão Gênica/veterinária
Rim Cefálico/imunologia
Imunoglobulina D/genética
Imunoglobulina D/metabolismo
Isotipos de Imunoglobulinas/metabolismo
Imunoglobulina M/genética
Imunoglobulina M/metabolismo
Muco/imunologia
Reação em Cadeia da Polimerase em Tempo Real/veterinária
Pele/imunologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fish Proteins); 0 (Immunoglobulin D); 0 (Immunoglobulin Isotypes); 0 (Immunoglobulin M)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:151103
[Lr] Data última revisão:
151103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150827
[St] Status:MEDLINE


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[PMID]:26205259
[Au] Autor:Mikheev VN; Pasternak AF; Valtonen ET
[Ad] Endereço:Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninskii pr, 119071, Moscow, Russia. vicnikmik@gmail.com.
[Ti] Título:Behavioural adaptations of argulid parasites (Crustacea: Branchiura) to major challenges in their life cycle.
[So] Source:Parasit Vectors;8:394, 2015 Jul 25.
[Is] ISSN:1756-3305
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Fish lice (Argulus spp.) are obligate ectoparasites, which contrary to most aquatic parasites, retain the ability to swim freely throughout the whole of their life. In fish farms, they can quickly increase in numbers and without effective control cause argulosis, which results in the reduced growth and survival of their fish hosts. The morphology of Argulus spp, including their sensory organs, is suitable for both parasitism and free-swimming. By spending a considerable amount of time away from their host, these parasites risk being excessively dispersed, which could endanger mating success. Here we present a review of recent studies on the behaviour of Argulus spp, especially the aggregative behaviour that mitigates the dilution of the parasite population. Aggregation of parasites, which is especially important during the period of reproduction, occurs on different scales and involves both the aggregation of the host and the aggregation of the parasites on the host. The main behavioural adaptations of Argulus spp, including searches for hosts and mates, host manipulation and host choice, are all focused on the fish. As these ectoparasites repeatedly change hosts and inflict skin damage, they can act as vectors for fish pathogens. The development of environmentally friendly measures for the control and prevention of argulosis needs to take into account the behaviour of the parasites.
[Mh] Termos MeSH primário: Arguloida/fisiologia
Comportamento Animal
Doenças dos Peixes/parasitologia
Interações Hospedeiro-Parasita
Infestações por Piolhos/veterinária
Estágios do Ciclo de Vida
[Mh] Termos MeSH secundário: Animais
Arguloida/crescimento & desenvolvimento
Doenças dos Peixes/prevenção & controle
Peixes
Especificidade de Hospedeiro
Infestações por Piolhos/parasitologia
Infestações por Piolhos/prevenção & controle
Reprodução
Natação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; REVIEW
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150725
[St] Status:MEDLINE
[do] DOI:10.1186/s13071-015-1005-0



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