scholarly journals Study of Helminth Parasite from Freshwater Fish, in Aurangabad City (M.S.) India

2021 ◽  
pp. 320-325
Author(s):  
T. S. Pathan ◽  
Shaikh Tabassum
Keyword(s):  
Environmental Factors ◽  
Freshwater Fish ◽  
Freshwater Fishes ◽  
Helminth Parasite ◽  
Helminth Parasites ◽  
Godavari River ◽  
Fish Samples

The present study deals with the survey of helminth parasites from Aurangabad city (M. S.) India, during 2015 to June 2016. This report summarizes the data of incidence, intensity and density of infection of helminth parasites in freshwater fishes in relation to environmental factors. Fish samples were collected from Godavari River, Paithan, Aurangabad, examined for helminth parasites. During the present study 100 fishes were examined

scholarly journals Helminth parasites of freshwater fish from Central America

Zootaxa ◽  
2008 ◽  
Vol 1915 (1) ◽  
Author(s):  
GUILLERMO SALGADO-MALDONADO
Keyword(s):  
South America ◽  
Freshwater Fish ◽  
Central America ◽  
Current Knowledge ◽  
Taxonomic Composition ◽  
Parasite Fauna ◽  
Helminth Species ◽  
Helminth Parasite ◽  
South American ◽  
Helminth Parasites

This study is a compilation of current knowledge of the taxonomic composition and distribution of the helminth parasites of freshwater fish in Central America. A list of 111 adult helminth species up to day reported from 17 freshwater fish families from Central America was compiled. The data show a helminth parasite fauna in freshwater fish that is typical to the region. One hundred and two of the known helminth species are endemic to the area, 32 of which can be derived from South American genera. Nematodes were the most abundant group, followed by monogeneans and trematodes. None of the 29 helminth families recorded to date is exclusive to Central America, while 16 of the 65 recorded genera have been only recorded from this area. Twenty three of these genera are South American lineages. The data suggest that helminth parasites of freshwater fish from Central America constitute a recent fauna derived mainly from South America but not found there.

scholarly journals Probiotics for cultured freshwater fish

2020 ◽  
Vol 41 (2) ◽  
pp. 105
Author(s):  
Javier Fernando Melo-Bolívar ◽  
Ruth Yolanda Ruiz-Pardo ◽  
Michael E Hume ◽  
Hanna E Sidjabat ◽  
Luisa Marcela Villamil-Diaz
Keyword(s):  
Water Quality ◽  
Gastrointestinal Tract ◽  
Stress Tolerance ◽  
Freshwater Fish ◽  
Filamentous Fungi ◽  
Growth Promotion ◽  
Freshwater Fishes ◽  
Fish Feed ◽  
Probiotic Strains ◽  
Commercial Applications

Probiotic products are viewed as an alternative to the use of antibiotics in freshwater fishes farming. Probiotic organisms include bacteria, yeast, and filamentous fungi offering different benefits to fish including growth promotion, inhibition of pathogen colonisation, and improvement of nutrient digestion, water quality, and stress tolerance, as well as enhancement of reproduction. For these reasons, this review aims to identify the main trends in probiotic amendment in freshwater fishes. Strategies to incorporate the probiotic strains in the fish feed or pellets to allow optimal viability of the strains as they reach the fish gastrointestinal tract (GIT) are crucial in probiotic research and commercial applications for freshwater fish.

The ecology of parasites of freshwater fishes: the search for patterns

Parasitology ◽  
2009 ◽  
Vol 136 (12) ◽  
pp. 1653-1662 ◽  
Author(s):  
C. R. KENNEDY
Keyword(s):  
Community Dynamics ◽  
Parasite Community ◽  
Freshwater Fishes ◽  
Convincing Evidence ◽  
Helminth Parasites ◽  
Parasite Communities ◽  
Space And Time ◽  
Long Time ◽  
Population And Community Dynamics ◽  
Parasite Populations

SUMMARYDevelopments in the study of the ecology of helminth parasites of freshwater fishes over the last half century are reviewed. Most research has of necessity been field based and has involved the search for patterns in population and community dynamics that are repeatable in space and time. Mathematical models predict that under certain conditions host and parasite populations can attain equilibrial levels through operation of regulatory factors. Such factors have been identified in several host-parasite systems and some parasite populations have been shown to persist over long time-periods. However, there is no convincing evidence that fish parasite populations are stable and regulated since in all cases alternative explanations are equally acceptable and it appears that they are non-equilibrial systems. It has proved particularly difficult to detect replicable patterns in parasite communities. Inter-specific competition, evidenced by functional and numerical responses, has been detected in several communities but its occurrence is erratic and its significance unclear. Some studies have failed to find any nested patterns in parasite community structure and richness, whereas others have identified such patterns although they are seldom constant over space and time. Departures from randomness appear to be the exception and then only temporary. It appears that parasite communities are non-equilibrial, stochastic assemblages rather than structured and organized.

scholarly journals Ecology and Conservation of Freshwater Fishes Biodiversity: We Need More Knowledge to Develop Conservation Strategies

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1929
Author(s):  
Rafael Miranda ◽  
Imanol Miqueleiz
Keyword(s):  
Freshwater Fish ◽  
Freshwater Fishes ◽  
Conservation Strategies ◽  
Vertebrate Species

Freshwater fish represent one-fourth of all vertebrate species, despite freshwater occupying less than 1% of the Earth’s surface [...]

Helminth parasites of Jamaican anoles (Reptilia: Iguanidae): variation in prevalence and intensity with host age and sex in a population of Anolis lineatopus

Parasitology ◽  
1987 ◽  
Vol 94 (2) ◽  
pp. 399-404 ◽  
Author(s):  
P. Vogel ◽  
D. A. P. Bundy
Keyword(s):  
Direct Relationship ◽  
Helminth Parasite ◽  
Infection Prevalence ◽  
Helminth Parasites ◽  
Host Age ◽  
Almost All ◽  
Low Prevalence ◽  
Age Range ◽  
Age And Sex

SUMMARYThe Jamaican iguanid lizard Anolis lineatopus is the host of 4 species of helminth parasite: an acanthocephalan (Centrorhynchus spinosus), a digenean (Mesocoelium danforthi), and 2 nematodes (Cyrtosumum scelopori and Thelandros (?cubensis). Prevalance of C. spinosus was unrelated to host age but was considerably higher in males (43%) than in females (10%). The intensity increased with host age: (range: 1–23, median: 3). Prevalence of C. scelopori increased with host age in both sexes: juveniles (<3 months) were uninfected while infection occurred in almost all lizards older than 9 months. Intensity was higher in males (range: 1–403, median: 158) than in females (range: 1–297, median: 86). The infection patterns of C. spinosus and C. scelopori differed significantly from each other and were not consistent with a simplistic direct relationship between time of exposure and infection prevalence. Acanthocephalan and digenean infections occurred at low prevalence and intensity although prevalence in older, larger lizards tended to be higher than in younger, smaller ones.

scholarly journals Diversity of Bacteria and Fungi Associated with Freshwater Fishes from Mijawal River, Nasarawa, Nigeria

2020 ◽  
Vol 24 (6) ◽  
pp. 1085-2020
Author(s):  
K.M. Adamu ◽  
H. Muhammad ◽  
S.U. Ahmad ◽  
M.M. Ahmad ◽  
A.M. Yakubu
Keyword(s):  
Fish Species ◽  
Terrestrial Ecosystems ◽  
Freshwater Fishes ◽  
Frequency Of Occurrence ◽  
Salmonella Spp ◽  
Tilapia Zillii ◽  
Fish Samples ◽  
Bacteria And Fungi ◽  
Rhizopus Sp ◽  
Mormyrus Rume

Understudying the presence of bacteria and fungi population on freshwater fishes, provides the knowledge and understanding of their diversity and potential roles they may play in the health of the aquatic and terrestrial ecosystems. The present study was conducted to evaluate the diversity of bacteria and fungi species of identified fish samples from River Mijawal, Nasarawa State. The fishes were sampled from the only landing for three months (October to December, 2019) for this study. During the sampling periods, thirteen (13) different fish species were identified; they were  swabbed with sterilized swab stick from the skin surface for bacteria and fungi identification. The Dominant fish species were Tilapia zillii, Labeo senegalensis, Mormyrus rume and Mormyrus tapines. The total number of thirteen (13) bacterial and five (5) fungi species were isolated and  identified. Eight (8) of the bacteria isolates, were gram negative bacteria (Pseudomonas sp, Aeromonas sp, Serratia mercescenes, Proteus sp, Salmonella spp, Escherichia coli, Klebsiella sp, and Enterobacter sp.); whilst the other five (5) were gram positive bacteria (Bacillus sp, Micrococcus sp, Staphylococcus sp, Enterococcus sp and Listeria monocytogenes).The five isolated fungi species were Aspergillus niger, Rhizopus sp, Penicillium  sp, Trichoderma viridae and Geotrichum candidum. The frequency of occurrence of the isolated bacteria indicated that Staphylococcus sp had the highest frequency of occurrence (16.67%) while Serratia mercescens had the least occurrence (2.78%). The highest number of occurrence of the isolated fungi species was observed in Rhizopus sp while the least was recorded in Geotricum candidum. It was observed that Tilapia zillii and  Mormyrus rume had the most frequent bacteria and fungi isolates. It can therefore be deduced from the results that fish samples identified from River Mijawal has high bacteria and fungi diversity that may be pathogenic to man. The occurrence of these microbes may be attributed of human  and animal faeces in the River  Keywords: Freshwater fishes, Microbes, River Mijawal, Nasarawa  

scholarly journals Type of helminth parasite in Snakehead fish (Channa striata) from Seuneubok Cina, Indra Makmur, Aceh Timur, Indonesia

2019 ◽  
Vol 1 (1) ◽  
pp. 47-55
Author(s):  
Masitta Tanjung
Keyword(s):  
Freshwater Fish ◽  
Environmental Conditions ◽  
Sampling Method ◽  
Helminth Parasite ◽  
Paddy Fields ◽  
Tropical Regions ◽  
Research Results ◽  
Purposive Sampling ◽  
Channa Striata

Snakehead fish (Channa striata) is one of the freshwater fish in tropical regions such as Asia and Africa, and has high nutrition but is difficult to cultivate. In Indonesia, Snakehead fish are found in paddy fields, swamps and ditches, making them susceptible to parasites. Constraints in Snakehead fish cultivation are caused by the nature of the fish as a predatory, lack of the availability of food and environmental conditions that can affect the growth of the fish. The former paddy fields in Seuneubok Cina of Indra Makmur, Aceh Timur, Indonesia, is found many Snakehead fish. This research aims to determine the types of parasites that infect Snakehead fish. The Snakehead fish was taken using electrofishing gear with purposive sampling method, then dissected and identified the endoparasites which contained in the fish intestines. The research results found three genus of parasites: Pallisentis, Procamallanus and Camallanus.

scholarly journals The Evolution of Alternative Buoyancy Mechanisms in Freshwater Fish Eggs

2021 ◽  
Vol 9 ◽  
Author(s):  
Feng Chen ◽  
Carl Smith ◽  
Yeke Wang ◽  
Jun He ◽  
Wulai Xia ◽  
...  
Keyword(s):  
Parental Care ◽  
Freshwater Fish ◽  
Relative Size ◽  
Negative Relationship ◽  
Freshwater Fishes ◽  
Perivitelline Space ◽  
Fish Eggs ◽  
Reproductive Tactics ◽  
Oil Droplets ◽  
Pelagic Eggs

Alternative reproductive tactics (ARTs) are behavioural, morphological, and physiological traits associated with alternative reproductive phenotypes within a population or species. ARTs are widespread in nature, and are a particular feature of teleost fishes. However, few studies have examined egg buoyancy mechanisms in the context of the evolution of ARTs in freshwater fishes. In marine fishes, egg buoyancy is achieved chiefly through hydration. While the buoyancy of freshwater fish eggs has been suggested to be determined primarily through the presence of oil droplets, the majority (60%) of freshwater pelagic eggs do not possess an oil droplet. We applied a physical model of buoyancy to understand the contributions of oil droplets and hydration to the buoyancy of pelagic freshwater fish eggs. We further used phylogenetic regression to estimate the effect of the relative size of the perivitelline space, habitat and parental care on the occurrence of oil droplets, while controlling for non-independence among species due to phylogenetic relatedness. Our analysis demonstrates that the probability of oil droplets in freshwater pelagic eggs exhibits a significant negative relationship with the size of perivitelline space, which may reflect a trade-off relating to energy allocation in contrasting habitats. We also demonstrate a positive association between the probability of oil droplets and the provision of parental care and occupancy of lentic habitats. These findings indicates the evolution of contrasting buoyancy mechanisms as novel ARTs in freshwater fishes. A theoretical model in combination with empirical analysis indicate the evolution of novel ARTs in freshwater fishes as adaptive responses to flow conditions.

scholarly journals A review of length-weight relationships of freshwater fishes in Malaysia

2018 ◽  
Vol 20 (1) ◽  
pp. 55-68 ◽  
Author(s):  
Amonodin Mohamad Radhi ◽  
Mohd-Fadzil Nurul Fazlinda ◽  
Mohammad Noor Azmai Amal ◽  
Hashim Rohasliney
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Environmental Changes ◽  
Meta Analysis ◽  
Freshwater Fishes ◽  
Clarias Batrachus ◽  
Ecological Health ◽  
Allometric Growth ◽  
Freshwater Fish Species

Abstract This manuscript reviews the length-weight relationships (LWRs) of freshwater fishes in Malaysia. A total of 102 LWRs of fishes gathered from literature pertaining to 64 freshwater fish species were analysed. A meta-analysis from 13 previous reports showed that the b values was ranged from 2.19 (Clarias batrachus) to 4.106 (Barbodes binotatus). Out of 64 observed species, 47 species (11 families) experienced positive allometric growth, while another 23 species (eight families) and 31 species (12 families) were recorded under isometric and negative allometric growth, respectively. The fish LWRs observed can be used as an indicator of environmental changes and fish ecological health for freshwater fishes in Malaysia.

Freshwater fishes of northern Australia

Zootaxa ◽  
2017 ◽  
Vol 4253 (1) ◽  
pp. 1 ◽  
Author(s):  
BRADLEY J. PUSEY ◽  
DAMIEN W. BURROWS ◽  
MARK J. KENNARD ◽  
COLTON N. PERNA ◽  
PETER J. UNMACK ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Conservation Planning ◽  
Information Sources ◽  
Fish Assemblages ◽  
Spatial Arrangement ◽  
Freshwater Fishes ◽  
Ecological Condition ◽  
Northern Australia ◽  
Field Surveys ◽  
Freshwater Habitats

Northern Australia is biologically diverse and of national and global conservation signicance. Its ancient landscape contains the world’s largest area of savannah ecosystem in good ecological condition and its rivers are largely free-flowing. Agriculture, previously confined largely to open range-land grazing, is set to expand in extent and to focus much more on irrigated cropping and horticulture. Demands on the water resources of the region are thus, inevitably increasing. Reliable information is required to guide and inform development and help plan for a sustainable future for the region which includes healthy rivers that contain diverse fish assemblages. Based on a range of information sources, including the outcomes of recent and extensive new field surveys, this study maps the distribution of the 111 freshwater fishes (excluding elasmobranches) and 42 estuarine vagrants recorded from freshwater habitats of the region. We classify the habitat use and migratory biology of each species. This study provides a comprehensive assessment of the diversity and distribution of fishes of the region within a standardised nomenclatural framework. In addition, we summarise the outcomes of recent phylogeographic and phylogenetic research using molecular technologies to identify where issues of taxonomy may need further scrutiny. The study provides an informed basis for further research on the spatial arrangement of biodiversity and its relationship to environmental factors (e.g. hydrology), conservation planning and phylogentic variation within individual taxa. 

Sign in / Sign up

Export Citation Format

Share Document