FIRST DATA ON PARASITES OF NEOGOBIUS ILJINI (PERCIFORMES, GOBIIDAE) OF THE MIDDLE VOLGA

2021 ◽  
Vol 14 (3) ◽  
pp. 32-44
Author(s):  
O. V. Mineeva ◽  
D. Yu. Semenov
Keyword(s):  
Dominant Species ◽  
Parasite Fauna ◽  
Kuibyshev Reservoir ◽  
Natural Range ◽  
Middle Volga ◽  
Nicolla Skrjabini

The results of a study of the fauna of multicellular parasites of the Caspian bighead goby Neogobius iljini (Vasiljeva et Vasiljev, 1996) in three reaches of the Kuibyshev reservoir (Middle Volga) are presented. Twelve species and undefined forms of parasites were found, including a specific to the fam. Gobiidae metacercaria Holostephanus cobitidis . The most diverse fauna of macroparasites is observed in the lower reaches of the reservoir (Priplotinny reach). The dominant species in the parasite fauna of the Caspian goby of the studied reservoir is the alien fluke Nicolla skrjabini , whose natural range is limited to the rivers of the Azov and Black seas basin.

scholarly journals Helminth community structure of the oven frog Leptodactylus latinasus (Anura, Leptodactylidae) from Corrientes, Argentina

2006 ◽  
Vol 51 (4) ◽  
Author(s):  
Monika Hamann ◽  
Cynthya González ◽  
Arturo Kehr
Keyword(s):  
Small Intestine ◽  
Body Size ◽  
Dominant Species ◽  
Parasite Fauna ◽  
Helminth Species ◽  
Helminth Community ◽  
Cestode Species ◽  
Component Community ◽  
The City ◽  
Host Body Size

AbstractA total of 36 adult individuals of Leptodactylus latinasus were collected near the city of Corrientes, Province of Corrientes in Argentina. The main goals of this study were: (1) to determine the helminth parasite fauna of L. latinasus; (2) to determine the richness and diversity of parasites at the component and infracommunity levels; (3) to analyze the relationships between helminth, frog body size and sex, and (4) to identify and examine species affinity of helminth communities. The helminth component community of this frog’s population consisted of 17 species. The predominant groups of parasites were the trematodes (adults: Glypthelmins repandum, Catadiscus inopinatus and Haematoloechus longiplexus; larvae: Travtrema aff. stenocotyle, Bursotrema aff. tetracotyloides, Styphlodora sp., unknown opisthogonimid species, Petasiger sp. and unknown strigeid species), followed by the nematodes (Cosmocerca podicipinus, C. parva, C. rara, C. cruzi, Schrankiana schranki and Aplectana hylambatis); other groups of parasites were represented by only one species (unknown larval cestode species and Centrorhynchus sp.). All parasite helminth species showed an aggregated pattern of distribution. The most infected organs were kidneys, small intestine, large intestine and pharyngeal zone. The host body size was important in determining the parasites abundance of G. repandum. At the level of component community G. repandum was the species with highest prevalence of infection and Bursotrema aff. tetracotyloides was the dominant species. Helminth species showed four significant pairs of covariation and two significant pairs of association in the infracommunities of Leptodactylus latinasus.

scholarly journals Fluctuation of total number of fish larvae and their mass types depending on environmental factors in the Mesha bay of the Kuibyshev reservoir in 2012-2018

2019 ◽  
Vol 2019 (4) ◽  
pp. 79-86
Author(s):  
Vyacheslav Alekseevich Kuznetsov ◽  
Yuri Aleksandrovich Severov ◽  
Vladimir Vyacheslavovich Kuznetsov ◽  
Firdauz Mubarakovna Shakirova
Keyword(s):  
Species Diversity ◽  
Environmental Factors ◽  
Dominant Species ◽  
Fish Larvae ◽  
Shannon Index ◽  
Total Catch ◽  
Kuibyshev Reservoir ◽  
Third Place ◽  
The Third ◽  
Spring Period

The article analyzes fluctuations of the number of fish larvae in the littoral of the Mesha Bay of the Kuibyshev Reservoir in the spring period of 2012-2018 in relation to the level and tem-perature regimes. The assessment of their species diversity has been given. In these years there were found 7-13 larvae species in catches. The minimal number of larvae species in the catches were registered in 2013, the maximum number - in 2018. The total number of fish larvae varied in these years 57.4-807.0 sp/effort. In terms of 1m3 it made 807.0-5659.1specimens. For all the years of research roach larvae were the dominant species in the catches, ranging from 42.7% to 80.7% of the total catch. The average number of roach larvae was 105.8 sp/effort. The second place in the catches belonged to bream larvae whose average number made 43.4sp/effort (their average part in catches is 29.3%). The third place in the catches in different years belonged to ide larvae, silver bream, bleak and silver crucian. Among them silver bream larvae had the greatest number - 7.5 sp/effort. Larvae of Ide, bleak and silver crucian on average ranged 3.2-3.8 sp/effort. The largest magnitude of the number fluctuation was found in silver bream and bleak. Their variation coefficient ranged within 115.9-117.1%. Bream had a relatively steady replenishment of the larvae (Cv = 37.9%). There is a positive correlation between the abundance (sp.) of roach and bream larvae, but between the abundance indicators (%) the correlation is negative, i.e. the higher the percentage of roach dominance, the smaller the proportion of bream in the catches. Within 2012-2018 Shannon index of species diversity in fish larvae ranged from 0.96 to 2.09 bits. There is a negative correlation between Shannon index and indices of abundance of roach and bream larvae

Materials on multicellular parasites fauna of the ruffe Gymnocephalus cernuus Linnaeus, 1758 (Pisces: Percidae) from the Saratov water basin

2016 ◽  
Vol 3 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Минеева ◽  
O. Mineeva
Keyword(s):  
Natural Habitat ◽  
Parasite Fauna ◽  
Middle Part ◽  
Reservoir Host ◽  
The Body ◽  
Infection Rates ◽  
Saratov Reservoir ◽  
Gymnocephalus Cernuus ◽  
Larval Stages ◽  
Nicolla Skrjabini

Objective of research. Data on the species composition of the fauna of multicellular parasites and the infection rates of the pope ruffe Gymnocephalus cernuus Linnaeus, 1758 from Mordovian floodplain of the Saratov reservoir (the middle part) are pesented. Materials and methods. 53 ruffe individuals were investigated in spring and summer 2012 – 2015 by incomplete parasitological post-mortem examination (Bykhovskaya-Pavlovskaya, 1985). 19 species of multicellular parasites belonging to 7 classes: Monogenea - 1, Cestoda - 1, Trematoda - 11, Nematoda - 3, Acanthocephala - 1, Bivalvia - 1, Crustacea – 1 were registered. The largest group are flukes; more than half of species (8) are larval forms, which is the result of bottom living of the host. The significant diversity of larval stages of helminths (8 species of trematodes and 2 species of nematodes) shows the involvement of the ruffe as an intercalary, supplementary and/or reservoir host in the circulation of parasites in fish, birds and mammals. 7 species of parasites infest the ruffe on the food chain; 12 species – using the active infestation way. Results and discussion. The studied parasite fauna contains one species narrowly specific for the ruffe (monogenea D. amphibothrium (Wagener, 1857) and 2 species typical for percoid fishes (cestoda Proteocephalus percae (Müller, 1780) and trematoda Bunodera luciopercae (Müller, 1776). 2 alien species Nicolla skrjabini (Iwanitzky, 1928) (marita) and Apophallus muehlingi (Jägerskiöld, 1898) (mtc.) whose natural habitat is limited by the rivers of the Azov-Black Sea and Baltic Sea were registered in the fauna of multicellular parasites of the ruffe from the Saratov reservoir. The most common ruffe parasites are Diplostomum and Ichthyocotylurus metacercariae metacercaria infesting fish by penetrating through the body covers. These metacercariae as well as Apophallus muehlingi metacercariae are pathogenic to fish.

Ecological and biological features of river crayfish in the modern conditions of the Kuibyshev reservoir

2021 ◽  
pp. 41-56
Author(s):  
Marina Lvovna Kalaida ◽  
Svetlana Dmitrievna Borisova ◽  
Madina Farhadovna Khamitova
Keyword(s):  
Body Weight ◽  
Chemical Analysis ◽  
Feed Additive ◽  
Modern World ◽  
Kuibyshev Reservoir ◽  
Middle Volga Region ◽  
Biological Features ◽  
Crayfish Population ◽  
Middle Volga ◽  
Edible Parts

Crayfish are considered as objects of consumption in the modern world. An increase in their share in the production of aquaculture objects is shown. The data on the state of the crayfish population on the territory of the Middle Volga before regulation, after the formation of the Kuibyshev reservoir and at the present time are presented. It was shown that the size-weight and ecological-biological characteristics of long-toed crayfish before regulation and after the formation of the reservoir are similar. The data on the modern size-age characteristics of populations of narrow-clawed crayfish in the Volga-Kama reach of the Kuibyshev reservoir are presented. It is shown that in the catches the basis is made up of three-year-olds 13–15 cm long and weighing about 80–100 g. The equation for the dependence of body weight on the zoological length of river narrow-clawed crayfish in the Volga-Kama reach of the Kuibyshev reservoir: y = 35,588x0,3073. The equation for the dependence of body weight on the commercial length of narrow-clawed crayfish in the Volga-Kama Reach of the Kuibyshev Reservoir: y = 29,409x0,3275. Chemical analysis of narrow-clawed crayfish revealed 12 elements. The following sequences of the content of elements in narrow-clawed crayfish from the Volga-Kama reach of the Kuibyshev reservoir were noted: in the muscle tissue of edible parts — Ca ˃K ˃S ˃P ˃Cu ˃Fe ˃Zn ˃Mn ˃ Br ˃Sr; in shell — Ca ˃Si ˃P ˃S ˃K ˃Sr ˃Ti ˃Fe ˃Mn ˃Cu ˃Br ˃Zn; in entire crayfish — Ca ˃K ˃P ˃Si ˃S ˃Sr ˃Fe ˃Mn ˃Cu ˃Ti ˃Br ˃Zn. In the edible parts of the narrow-clawed crayfish of the Volga-Kama reach of the Kuibyshev reservoir, there are no such hazardous elements as lead, arsenic, cadmium and mercury. Crayfish can be used as a feed additive in feed for aquaculture objects. Crayfish breeding in the structure of aquaculture in the Middle Volga region can become an important component. The development of aquabiotechnology makes it possible to use natural crayfish populations for the tasks of creating industrial crayfish farms.

scholarly journals Metazoan fauna parasitizing Peckoltia braueri and Pterygoplichthys pardalis (Loricariidae) catfishes from the northeastern Brazilian Amazon

2017 ◽  
Vol 47 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Adriele Carolina Franco CARDOSO ◽  
Marcos Sidney Brito OLIVEIRA ◽  
Ligia Rigôr NEVES ◽  
Marcos TAVARES-DIAS
Keyword(s):  
Species Richness ◽  
Dominant Species ◽  
Parasite Species ◽  
River System ◽  
Brazilian Amazon ◽  
Parasite Fauna ◽  
Shannon Index ◽  
The Body ◽  
High Prevalence ◽  
Northern Brazil

ABSTRACT This study investigated the metazoan parasite fauna in Peckoltia braueri and Pterygoplichthys pardalis from a tributary of the Amazon River system, in northern Brazil. In P. braueri, 630 parasites were collected, belonging to Unilatus unilatus, Nothogyrodactylus sp., Genarchella genarchella, Proteocephalus sp., Gorytocephalus elongorchis, Dolops longicauda and Hirudinea gen. sp., with a dominance of monogenean species. In P. pardalis, 120 parasites were collected, belonging to U. unilatus, Acanthostomum gnerii and Gorytocephalus elongorchis, and this acanthocephalan was the dominant species. In both hosts, the parasites presented clumped distribution, high prevalence, low abundance, low Shannon diversity, and low species richness, with a predominance of helminth species. In P. braueri, host length was positively correlated with parasite species richness and Shannon index. There was no difference in the body condition of parasitized and non-parasitized fishes in either host. This was the first report of these parasites in P. braueri and P. pardalis.

Ecological-faunistical review of fish parasites from the lake Sobach’e (putorana Plateau)

2016 ◽  
Vol 3 (3) ◽  
pp. 281-290
Author(s):  
Поляева ◽  
K. Polyaeva ◽  
Романов ◽  
V. Romanov
Keyword(s):  
Dominant Species ◽  
Parasite Species ◽  
Statistical Treatment ◽  
Parasite Fauna ◽  
Fish Parasites ◽  
Arctic Grayling ◽  
Putorana Plateau ◽  
Siberian Whitefish ◽  
Parasite Infestation ◽  
Fish Hosts

Objective of research: The purpose of our research was to study parasite fauna of salmonoid fishes from the lake Sobach’e (Putorana plateau) and to report its ecological and faunistic characteristics. Material and methods: 88 specimens of salmonoid fishes (herring, siberian whitefish, round whitefish, arctic grayling and dominant species of char) were collected from the lake Sobach’e in July — August 2014. Collecting, fixation and cameral treatment were carried out using the standard method of Bykhovskaya-Pavlovskaya. Statistical treatment of the data was conducted using the Quantitative Parasitology 3.0 software. Results and discussion: Data on parasite infestation of salmonoid fishes from the lake Sobach’e is provided. 29 parasite species (Myxosporea — 3, Monogenea — 2, Cestoda — 7, Trematoda — 7, Nematoda — 3, Acanthocephala — 4, Hirudinea — 1, Crustacea — 2) were found. Analysis of parasite distribution in their fish hosts was described. The lake has been classified as oligotrophic with the features of subfamilies Orthocladiinae and Pontoporane according to the concept of the parasitological typing of lakes presented by Rumyantsev E.A.

Non-native white piranhas graze preferentially on caudal fins from large netted fishes

2019 ◽  
Vol 70 (4) ◽  
pp. 585 ◽  
Author(s):  
F. R. Andrade ◽  
L. D. Silva ◽  
I. Guedes ◽  
A. M. Santos ◽  
P. S. Pompeu
Keyword(s):  
Dominant Species ◽  
Large Fish ◽  
Number Of Species ◽  
Natural Range ◽  
First Time ◽  
Species Being ◽  
Native White

In this study we assessed, for the first time, grazing by Serrasalmus brandtii outside its natural range. We observed higher grazing proportions in samples from sites where S. brandtii is the dominant species in relation to sites where it is recorded as present and sites where it is absent. S. brandtii grazed preferentially on caudal fins in relation to all other fins alone or combined. It also preferred to mutilate fins instead of flesh. Larger fish had a higher probability of being mutilated and had a higher number of mutilated fins than smaller fish, which is expected as large fish represent a larger resource to their consumers. S. brandtii avoided mutilating conspecifics and, as its abundance increased, so did the number of species being preferentially grazed.

scholarly journals The role of ichthyopathological observations in the industrial reproduction of sterlet for the tasks of release into the Kuibyshev reservoir

2021 ◽  
Vol 288 ◽  
pp. 01046
Author(s):  
Marina Kalaida ◽  
Lada Govorkova ◽  
Madina Khamitova ◽  
Olga Anokhina ◽  
Andrey Kalaida
Keyword(s):  
Natural Population ◽  
High Intensity ◽  
Fish Farming ◽  
Volga Region ◽  
Kuibyshev Reservoir ◽  
Middle Volga Region ◽  
Middle Volga ◽  
The Stability

The features of the industrial reproduction of sterlet in the Middle Volga region are considered. The necessity of further increasing the volume of production and release of juvenile sterlet to the Kuibyshev reservoir is shown. An increase in the relevance of research works in the field of sturgeon ichthyopathology has been noted. The importance of carrying out ichthyopathological observations is shown both for ensuring the stability and efficiency of production, and for preserving the natural population of sterlet in the Kuibyshev reservoir. The article considers the relative novelty of ichthyopathology as a science and the discrepancy between normative legal acts regulating ichthyopathological observations in Russia. The industrialization of aquaculture forms is shown. The emergence of new sturgeon diseases specific to high-intensity fish farming was noted. The results of experiments on the use of inorganic drugs for the treatment of sturgeon nutritional diseases are presented.

scholarly journals Helminth fauna parasitizing Pimelodus pohli (Actinopterygii: Pimelodidae) from the upper São Francisco River, Brazil

2014 ◽  
Vol 23 (3) ◽  
pp. 375-382 ◽  
Author(s):  
Claudia Silveira São Sabas ◽  
Marilia Carvalho Brasil-Sato
Keyword(s):  
South America ◽  
River Basin ◽  
Dominant Species ◽  
Parasite Species ◽  
Parasite Fauna ◽  
Helminth Fauna ◽  
Sao Francisco River ◽  
Total Length ◽  
São Francisco River ◽  
First Time

The parasite fauna of catfish, Pimelodus pohli, from the São Francisco River Basin is presented. A total of 45 catfish from the upper São Francisco River (45°15′44″W 18°13′25″S), were examined from July 2009 to September 2011. Forty-three catfish (95.5%) were infected by at least one parasite species, with 885 parasite specimens being found, distributed across 17 species: Monogenea (Demidospermus uncusvalidus, Pavanelliella pavanellii, and Scleroductus sp.); Eucestoda (plerocercoids of Proteocephalidea); Digenea (metacercariae of Austrodiplostomum compactum, adults of Auriculostoma platense and Kalipharynx sp., and juvenile of Prosthenhystera obesa); Nematoda (larvae of Contracaecum sp., Hysterothylacium sp., Procamallanus pimelodus, Procamallanus sp., and unidentified of Cucullanidae, and adults of Cucullanus caballeroi, Philometra sp., and Procamallanus freitasi); and Acanthocephala (adults of Neoechinorhynchus pimelodi). Procamallanus freitasi and Scleroductus sp. were the taxa with the highest prevalence. Demidospermus uncusvalidus, P. freitasi, and Scleroductus sp. were the dominant species. The host's sex did not influence parasitic indexes; however, the total length of the catfish did appear to have some influence. The parasites, with except for P. obesa, were registered for the first time in P. pohli, as well as the occurrence of Kalipharynx sp. and C. caballeroi among pimelodid hosts from São Francisco River and South America.

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