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1. A coccidian (Apicomplexa: Eimeriidae) with extracytoplasmally located stages in the kidney tubules of golden carp (Carassius auratus gibelio L.) (Cyprinidae)

Creator:
Lukeš, J.
Format:
print
Type:
model:internalpart and TEXT
Subject:
coccidia, Eimeria, fish, fusion, and host-parasite interaction
Language:
English
Description:
Numerous coccidian stages were found in the kidney tubules of the golden carp (Carassius auratus gibelio). The merogonial and gamogonial stages were localized extracytoplasmally in the microvillous region of the epithelial cells. The host-parasite interface consisted of i) a large area where the parasite was separated from the host cytoplasm by the parasitophorous vacuole membrane only, and ii) a zone of multiple fusions of the host cell membrane investing the parasite to the neighbouring microvilli. The taxonomic status of the extracytoplasmic stages is not clear, however, their possible appurtenance to Eimeria scardimi, which was frequently found in the kidneys of golden carps in the same population, is discussed.
Rights:
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2. A new species of Anchistrotos (Copepoda: Taeniacanthidae) from hilsa shad, Tenualosa ilisha (Actinopterygii: Clupeidae), off Iraq

Creator:
Maran, B. A. Venmathi, Moon, Seong Yong, and Adday, Thamir Katea
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
taxonomy, fish, parasite, gills, Anchistrotos, maxilliped, and whip-like setae
Language:
English
Description:
A new species of parasitic copepod Anchistrotos tangi sp. n. (Cyclopoida: Taeniacanthidae) is described based on adult female specimens collected from the gills of hilsa shad, Tenualosa ilisha (Hamilton, 1822) (Actinopterygii: Clupeidae) captured off Iraq. The new species differs from its congeners by having the following combination of characters in the adult female: 1) the rostral area sclerotised; 2) the presence of row of spinules on the proximal and distal margins of the anal somite; 3) the maxilliped claw with 2 long whip-like setae just crossing the distal edge of claw with serrated terminal margin; and 4) the leg 5 ornamented with patched spinules distally. This is the ninth nominal species of Anchistrotos Brian, 1906.
Rights:
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3. A synthesis of our current knowledge of philometrid nematodes, a group of increasingly important fish parasites

Creator:
Moravec, František and de Buron, Isaure
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Nematoda, Philometridae, parasites, fish, taxonomy, morphology, biology, and pathology
Language:
English
Description:
Members of the Philometridae represent the most important group of dracunculoid nematodes parasitizing fishes. In his monograph treating the Dracunculoidea, Moravec (2006) reported a total of 11 genera and 105 species of philometrids parasitizing freshwater, brackish-water and marine fishes. However, during the last six years (2007-2012), an additional 42 new species of Philometridae have been described, representing a 40% increase of the number of nominal species. Most of these species (30) belong to Philometra Costa, 1845, mainly represented by parasites of marine fishes, a few others (8) to Philometroides Yamaguti, 1935, and a single one to each of the following genera: Caranginema Moravec, Montoya-Mendoza et Salgado-Maldonado, 2008, Dentiphilometra Moravec et Wang, 2002, Dentirumai Quiazon et Moravec, 2013* and Spirophilometra Parukhin, 1971. Moreover, three new genera, Afrophilometra Moravec, Charo-Karisa et Jirků, 2009, Caranginema and Dentirumai, were erected. Representatives of seven genera, Afrophilometra, Buckleyella Rasheed, 1963, Caranginema, Dentiphilometra, Dentirumai, Paraphilometroides Moravec et Shaharom-Harrison, 1989 and Rumai Travassos, 1960, were studied using scanning electron microscopy (SEM) for the first time. Thirteen known but poorly described philometrid species were redescribed and, in some species of Caranginema and Philometra, previously unknown conspecific males were discovered and described. The male surface ultrastructure studied by SEM provided new taxonomically important features for species distinction. Gene sequencing was used in several recent studies and advanced our understanding of phylogenetic interrelationships among representatives of seven genera (Afrophilometra, Alinema Rasheed, 1963, Caranginema, Nilonema Khalil, 1960, Philometra, Philometroides and Rumai) and of the extent of the biodiversity of philometrids. New data were obtained on the biology and pathogenicity of several species of Nilonema, Philometra, Philometroides and Rumai. The need to carry out surveys in order to find males and to use SEM and gene sequencing to identify philometrids is emphasized. Appropriate quantitative methods to determine the impact of philometrids in ovarian tissue on host fecundity are recommended. Further detailed studies on philometrids would be significant not only from the theoretical viewpoint, but also because of their practical implications. A list of philometrid nematode species by continents is provided.
Rights:
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4. An analysis of osteological material from the late Funnel Beaker culture settlement in Brozany, northwestern Bohemia

Creator:
Kyselý, René
Type:
article, model:article, and TEXT
Subject:
archaeozoology, Eneolithic, puppies, human newborns, fox, bird, fish, Apodemus, Unio, bone artefacts, archeozoologie, eneolit, štěňata, lidští novorozenci, liška, ptáci, ryby, velevrub, and kostěné artefakty
Language:
Czech
Description:
An analysis of the bones from the settlement in Brozany nad Ohří (Litoměřice district) dated to the Salzmünde phase of the Funnel Beaker culture revealed standard characteristics for the reconstruction of the paleoeconomic situation and provided information regarding several unusual and interesting finds. There is a distinct predominance of domestic animals over wild species, with cattle being the most prominent domestic species. A total of sixteen species of wild animals were identified. Interesting finds include pig skulls, a complete skeleton of a fox, bones from perhaps synanthropic field mice, a fragment of an eagle bone, a vertebra from a large salmonid fish, scales from asp and chub and an assemblage of eight probably intentionally perforated shells. The skeletal remains of eight puppies were found in two settlement features, and skeletal remains of three newborn humans were also found in two settlement features. The co-occurrence of puppies and newborns in the same context indicates their equal depositional status. The material also contains a number of bone artefacts. and Rozbor kostí pocházejících ze sídliště v Brozanech nad Ohří (okr. Litoměřice), datovaného do salzmündské fáze kultury nálevkovitých pohárů, přinesl jak standardní charakteristiku paleoekonomické situace, tak i informace o několika neobvyklých a zajímavých nálezech. V materiálu výrazně převládají domácí zvířata nad divokými a mezi domácími zvířaty dominuje tur. Divokých živočichů bylo detekováno celkem 16 druhů. Zajímavými nálezy jsou kompletní lebky prasat, skelet lišky, kosti snad synantropních myšic, fragment kosti orla, obratel velké lososovité ryby a kumulace šupin bolena a jelce a soubor osmi perforovaných lastur velevrubů. Ve dvou sídlištních objektech byly nalezeny pozůstatky celkem osmi štěňat a ve dvou sídlištních objektech byla nalezena torza kostřiček tří lidských novorozenců. Unikátní je spolu-výskyt štěňat a novorozenců v témže kontextu naznačující jejich rovnocennost při deponování. Materiál obsahuje i soubor kostěných artefaktů.
Rights:
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5. Analysis of kinetoplast DNA of freshwater fish trypanosomes

Creator:
Kolesnikov, A. A., Jirků, M., Pecková, H., Polák, A., Maslov, D. A., and Lukeš, J.
Format:
print
Type:
model:internalpart and TEXT
Subject:
kinetoplast DNA, Trypanosoma, minicircle, conserved region, and fish
Language:
English
Description:
The sequences of 10 conservative regions (CR) of minicircles of 6 selected isolates of freshwater fish try-panosomes have typical organization of this region with high degree of sequence conservation. The comparison with CRs of other trypanosomatids showed that freshwater fish trypanosomes represent a compact separate group within the genus Trypanosoma. The alignment of all sequences obtained revealed, however, the existence of 2 types of CRs in sequenced minicirclcs, with the differences concentrated in a short region. Taxonomic consequences of these results arc discussed.
Rights:
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6. Cenotes (sinkholes) of the Yucatan Peninsula, Mexico, as a habitat of adult trematodes of fish

Creator:
Scholz, T., Vargaz-Vázguez, J., Moravec, F., Vivas-Rodríguez, C., and Mendoza-Franco, E.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Digenea, fish, cenotes, Yucatan, Mexico, and zoogeography
Language:
English
Description:
Examination of a total of 581 fish specimens of 15 species from 39 cenotes (sinkholes) in the Yucatan Peninsula, southeastern Mexico, revealed the presence of 10 species of adult trematodes. These were as follows: Saccocoelioides sogandaresi Lumsden, 1963, Saccocoelinides sp. (family Haploporidae), Cichlasotrema ujati Pineda et Andrade, 1989 (Angiodictyidae), Crassicutis cichlasomae Manter, 1936 (Homalometridae), Magnivitellinum simplex Kloss, 1966 (Macroderoididae), Stunkardiel-la minima (Stunkard, 1938) (Acanthostomidae), Oligogonotylus manieri Watson, 1976 (Cryptogonimidae), Genarchella tropica (Manter, 1936), G. astyanactis (Watson, 1976), and G. isabellae (Lamothe-Argumedo, 1977) (Derogenidae). Saccocoelioides sogandaresi is reported from Mexico for the first time. Poecilia velifera and P. latipunctata for S. sogandaresi, Cichlasoma octo-fasciatum for C. cichlasomae, Cichlasoma friedrichslahli and C. meeki for O. manieri, and C. meeki, C. octofasciatum and Go-hiomorus dormitor for C. isabellae represent new host records. Most species found are described and figured and their host range
Rights:
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7. Cestoda and Acanthocephala of fishes from cenotes (= sinkholes) of Yucatan, Mexico

Creator:
Scholz, Tomáš, Vargas-Vázquez, Joaquin, Moravec, Frantisek, Vivas-Rodríguez, Clara, and Mendoza-Franco, Edgar
Format:
print
Type:
model:internalpart and TEXT
Subject:
Cestoda, Acanthocephala, fish, cenotes, Yucatan, Mexico, and zoogeography
Language:
English
Description:
During a study on parasites of fish from cenotes (= sinkholes) in the Yucatan Peninsula, the following cestodes and acanthocephalans were found in 581 freshwater fish of 15 species: the cestodes Bothriocephalus acheilognathi Yamaguti, 1934, Bothriocephalus sp. (Bothriocephalidae), Nomimascolex sp. (Monticellidae), Proteocephalidea gen. sp. larv., Dendrouterina pa-pillifera (Fuhrmann, 1908) larv. and D. pilherodiae Mahon, 1956 larv. (Dilepididae), and the acanthocephalans Octospinifer-oides chandleri Bullock, 1957, Neoechinorhynchus golvani Salgado-Maldonado, 1978 (Neoechinorhynchidae), Polymorphus (syn. Arhythmorhynchus) brevis (Van Cleave, 1916) larv. (Polymorphidae), and an echinorhynchid larva. With the exception of B. acheilognathi, all tapeworms are found in Mexico for the first time; second-stage larvae of D. papillifera and D. pilherodiae from fish are reported for the first time.
Rights:
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8. Colonisation and extinction in relation to competition and resource partitioning in acanthocephalans of freshwater fishes of the British Isles

Creator:
Lyndon, Alastair R. and Kennedy, Clive R.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Acanthocephala, colonisation, extinction, fish, persistence, and resource partitioning
Language:
English
Description:
This paper challenges two paradigms long held in relation to the ecology of parasites in freshwater systems: (1) autogenic species are poorer colonisers than allogenic ones; and (2) parasites with direct life cycles are more successful colonisers than those with complex life cycles. Using new and existing data for Acanthocephala in freshwater fish from the British Isles, it is suggested that all six species present have been able to colonise and persist successfully, in spite of the supposed limitations of their autogenic life-style. It is proposed that these parasites have overcome these limitations by a variety of means, which apply equally to all species considered. Foremost among these is the utilisation of a migratory fish host as either a preferred or a suitable host in their life cycle, allowing colonisation of new areas and rescue effects in established areas, whilst equally important is the use of a common and widespread crustacean as the intermediate host. In addition, all six species appear to exhibit resource partitioning by host at either or both the larval and adult stages, thus reducing the potential for competition and further facilitating colonisation and survival. This hypothesis is supported by data from previous studies both on acanthocephalans from Europe and North America and on other autogenic parasites. It also provides an explanation for the apparently atypical host utilisation patterns of some acanthocephalan species in areas on the edge of their distributions, notably in Ireland.
Rights:
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9. Development of Procamallanus saccobranchi (Nematoda: Camallanidae), a parasite of a freshwater fish in India

Creator:
De, Nimai C. and Maity, Rabindra N.
Format:
print
Type:
model:internalpart and TEXT
Subject:
Nematoda, development, Mesocyclops, Copepoda, Heteropneustes, fish, and Procamallanus
Language:
English
Description:
The development of the nematode Procamallanus saccobranchi Karve, 1952, a parasite in the stomach of the fish Heteropneustes fossilis (Bloch), was studied in Mesocyclops crassus (Fischer) and Mesocyclops leuckarti (Claus). After being ingested by the copepods the nematode first-stage larvae penetrated into the haemocoel of the intermediate host; there they moulted twice (on days 3 and 5 p.i. at 28-30°C) attaining the third, infective stage. The definitive host H. fossilis acquired infection by feeding on copepods harbouring infcclivc-stage larvae; in the stomach of this definitive host, the larvae were observed to undergo two more moults. The third moult occurred on day 13 p.i. and the fourth moult on day 38 p.i. and day 66 p.i. in “male” and “female” larvae, respectively. The larval stages, including the moulting forms are described and illustrated.
Rights:
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10. Diclofenac-induced cytotoxicity in cultured carp leukocytes

Creator:
Nemcova, Monika, Pikula, Jiri, Zukal, Jan, and Seidlova, Veronika
Format:
počítač and online zdroj
Type:
model:article and TEXT
Subject:
fish, immune system, non-steroidal anti-inflammatory drug, toxicity, temperature variation, and environmental pollution
Language:
English
Description:
Diclofenac is a drug commonly used in human and veterinary medicine for the treatment of diseases associated with inflammation and pain. Medicinal products enter waste and surface waters on an everyday basis and contaminate the aquatic environment. Fish are therefore permanently exposed to these chemicals dissolved in their aquatic environment. To simulate variable environmental conditions, the aim of our study was to examine adverse effects of diclofenac under different temperatures of cell incubation (18, 21, 24, 27 and 30 °C). Cytotoxic and -static effects of diclofenac in concentrations of 0.001 μg/ml, 0.01 μg/ml, 0.1 μg/ml, 1 μg/ml, 10 μg/ml and 100 μg/ml for the carp (Cyprinus carpio) cultured leukocytes were quantified using detection of lactate dehydrogenase released from damaged cells. Overall DCF cytotoxicity was relatively low and its impact was pronounced at higher temperature and DCF concentration. Cells growth inhibition is changing more rapidly but it is high mainly at the highest concentration from low temperature. DNA fragmentation was not detected in tested leukocyte cell line. CYP450 increased diclofenac cytotoxicity only at the highest concentration but at incubation temperatures 18 and 27 °C. Leukocyte viability is essential for immune functions and any change can lead to reduction of resistance against pathogens, mainly in cold year seasons, when the immune system is naturally suppressed.
Rights:
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