scholarly journals Sex and Sexual Ornamentation Associated with Survival of the Cyprinid Fish, Rutilus rutilus, under Disease Stress

2013 ◽  
Vol 2 ◽  
pp. 1-4
Author(s):  
Jouni Taskinen ◽  
Lotta-Riina Sundberg ◽  
Raine Kortet
Keyword(s):  
Rutilus Rutilus ◽  
Cyprinid Fish ◽  
Sexual Ornamentation

Piscivorous fishes diet dominated by the Asian cyprinid invader, topmouth gudgeon (Pseudorasbora parva)

Biologia ◽  
2007 ◽  
Vol 62 (4) ◽  
Author(s):  
Jiří Musil ◽  
Zdeněk Adámek
Keyword(s):  
Czech Republic ◽  
Prey Species ◽  
Ecological Integrity ◽  
Perca Fluviatilis ◽  
Rutilus Rutilus ◽  
Cyprinid Fish ◽  
Pseudorasbora Parva ◽  
Sander Lucioperca ◽  
Topmouth Gudgeon ◽  
Native Fishes

AbstractPredation on the non-native cyprinid, Pseudorasbora parva, was reported during an annual study in a small connecting canal about 40 km south of Brno, Czech Republic. Two cyprinid fish species (Pseudorasbora parva, Rutilus rutilus) were identified in the diet of 23 piscivores belonging to three native fishes (Perca fluviatilis, Sander lucioperca, Esox lucius). The relative abundance of prey fishes changed seasonally and was dominated by the topmouth gudgeon in spring. Thereafter roach incidence continuously increased. In contrast, topmouth gudgeon was found to be a more sized-available prey and was the most dominant prey species in the diet of all piscivorous fishes during the whole season. Strong piscivory towards this alien might be beneficial for its eradication or control to support ecological integrity in natural and modified seminatural habitats.

scholarly journals Are the Immunocompetence and the Presence of Metazoan Parasites in Cyprinid Fish Affected by Reproductive Efforts of Cyprinid Fish?

2010 ◽  
Vol 2010 ◽  
pp. 1-14 ◽  
Author(s):  
Karolína Rohlenová ◽  
Andrea Šimková
Keyword(s):  
Parasite Species ◽  
Reproductive Investment ◽  
Cyprinid Fish ◽  
Metazoan Parasites ◽  
Somatic Condition ◽  
Immune Parameters ◽  
Life Traits ◽  
Physiological Demands ◽  
Species Richness And Abundance ◽  
Sexual Ornamentation

Each organism has the limited resources of energy that is distributed among important life traits. A trade-off between immune response and other physiological demands of organism especially costly reproduction is expected.Leuciscus cephalus, the cyprinid fish, was investigated during three periods varying in reproductive investment, that is, before-breeding, breeding, and after-breeding periods. We tested whether a potentially limited investment in immunity during the breeding is associated with higher susceptibility to the metazoan parasites. Following the immunocompetence handicap and sperm protection hypotheses, males expressing more elaborated sexual ornamentation should produce better quality sperm and be more parasitized. We found that reproductive investments in fish play an important role for energy allocation into somatic condition, immunity, and reproduction. The immune parameters including respiratory burst and leukocyte count were higher in breeding; however, parasite species richness and abundance appeared low. Males investing more in spawning tubercles reached high spermatocrite and were more parasitized by digeneans.

Morphological, histological, and molecular aspects of Myxobolus zaikae n. sp., a parasite of the roach Rutilus rutilus, in Lake Baikal

2020 ◽  
Vol 142 ◽  
pp. 75-82
Author(s):  
MD Batueva
Keyword(s):  
Connective Tissue ◽  
Lake Baikal ◽  
Rutilus Rutilus ◽  
Lateral View ◽  
Cyprinid Fish ◽  
Spore Morphology ◽  
Frontal View ◽  
Roach Rutilus Rutilus ◽  
The Common ◽  
Molecular Aspects

A new myxobolid species, Myxobolus zaikae n. sp., was found in the connective tissue near the kidney and liver blood vessels of the common roach Rutilus rutilus, while fish myxosporean fauna were being investigated in Lake Baikal, Russia. The parasites were studied on the basis of spore morphology as well as with histological and molecular methods. Mature spores of M. zaikae n. sp. are round or ellipsoidal in the frontal view and lemon-shaped in the lateral view, measuring 11.37 ± 0.11 µm (10.2-14.0 µm) in length, 10.29 ± 0.10 µm (9.6-11.0 µm) in width, and 6.3 ± 0.08 µm (5.8-7.1 µm) in thickness (mean ± SD; n = 50). Polar capsules are equal and pyriform, measuring 4.5 ± 0.07 µm (3.4-5.2 µm) in length and 2.9 ± 0.03 µm (2.6-3.3 µm) in width. Polar capsules contained polar filaments coiled with 5 to 6 turns. Phylogenetic analysis showed that this newly described species clusters with other myxobolid species infecting the connective tissue of different organs from Palearctic cyprinid fish.

Ligula intestinalis (L.) (Cestoda: Pseudophyllidea): polarization of cyprinid leucocytes as an indicator of host-and parasite-derived chemoattractants

Parasitology ◽  
1993 ◽  
Vol 107 (4) ◽  
pp. 433-440 ◽  
Author(s):  
M. J. Taylor ◽  
D. Hoole
Keyword(s):  
Incubation Temperature ◽  
Leading Edge ◽  
Spherical Shape ◽  
Rutilus Rutilus ◽  
Induced Polarization ◽  
Cyprinid Fish ◽  
Ligula Intestinalis

SUMMARYFreshly isolated pronephric leucocytes from roach, Rutilus rutilus and gudgeon, Gobio gobio were exposed to extracts of plerocercoids of Ligula intestinalis from these two cyprinid fish. Addition of the extracts or an increase in incubation temperature from 10 to 20 °C induced polarization of neutrophils and L1 granulocytes. Cells were transformed from their typical spherical shape to elongate forms possessing a ruffled leading edge. Extracts obtained from gudgeon-Ligula stimulated polarization of both roach and gudgeon leucocytes at 10 and 20 °C. In contrast, extracts from roach-Ligula, whilst having little effect at 10 °C, suppressed temperature-induced polarization of leucocytes at 20 °C. Addition of serum to all the essays enhanced polarization and abolished the roach-Ligula-induced suppression. It is suggested that leucocyte chemoattractants are present in Ligula from roach and gudgeon and only parasites from the former host contain an inhibitor of polarization. In addition, host-derived factors possibly complement, may be involved in leucocyte chemoattraction.

scholarly journals SOME INFORMATION ON THE CARP FISH SPECIES FEEDING

2021 ◽  
pp. 6-10
Author(s):  
Kais Magomedovich GUSEYNOV ◽  
Ruslan Magomedovich BARKHALOV ◽  
Aysha Sharapatinovna GASANOVA ◽  
Marina Vladimirovna KHLOPKOVA ◽  
Umshanat Dzhamaldinovna ZURKHAEVA
Keyword(s):  
Fish Species ◽  
Caspian Sea ◽  
Rutilus Rutilus ◽  
Cyprinid Fish ◽  
Abramis Brama ◽  
The Caspian Sea ◽  
Roach Rutilus Rutilus ◽  
Bream Abramis Brama ◽  
Carp Fish

The article presents the results of studies of feeding characteristics of such cyprinid fish species as the roach Rutilus rutilus caspius (Jakowlev, 1870) and the bream Abramis brama (Linnaeus, 1758) in various parts of the Daghestan coast of the Caspian Sea. The material was sampled along the entire Daghestan coast of the Caspian Sea, from the Kizlyar Bay to the mouth of the Samur river, in different biological seasons in the period of 2017–2018.

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