scholarly journals Study of Various Ecological Aspects on Digenetic Trematode Parasites in Important Food Fish Rita rita (Ham.) from Lucknow (India)

2020 ◽  
Vol 7 (5) ◽  
pp. 146-151
Author(s):  
Shilpi Yadav ◽  
Satish Chandra ◽  
Anand M Saxena
Keyword(s):  
Digenetic Trematode ◽  
Important Food ◽  
Ecological Aspects ◽  
Food Fish ◽  
Trematode Parasites

scholarly journals Digenetic Trematode Parasites in Two Fresh Water Fishes Ophiocephalus Punctatus and Xenentodon Cancila From North West Himalayas

2021 ◽  
Author(s):  
Sukanya Rajput ◽  
Seema Langer
Keyword(s):  
Fresh Water ◽  
Digenetic Trematode ◽  
Host Fish ◽  
Mean Intensity ◽  
North West ◽  
Trematode Infection ◽  
Xenentodon Cancila ◽  
The Mean ◽  
Union Territory ◽  
Trematode Parasites

Abstract The study was conducted during September 2018-August 2019 to study the digenetic trematode infection in fresh water fishes of some of the water bodies viz. Gho-manhasan, Chakrali and Chadwal of Jammu region of J&K union territory A total of 220 fishes comprising Ophiocephalus punctatus and Xenentodon cancila belonging to families Channidae and Belonidae respectively were examined. A total of 4 digenetic trematode parasites belonging to 4 different families i.e., Euclinostomum heterostomum (Clinostomidae Luhe, 1901); Phyllodistomum tripathi (Gorgoderidae Looss, 1901); Genarchopsis piscicola (Hemiuridae, Luhe, 1901), and Bucephalopsis karvei (Bucephalidae Poche, 1907) were detected. The overall prevalence of digenetic trematode infection was 65.90% and the mean intensity was 3.58. Among these Genarchopsis piscicola showed the highest prevalence (40.38%) with mean intensity 2.95 in the host fish Xenentodon cancila, while in other species the prevalence ranged between 26.23% and 34.62%. Present study authenticates the presence of several species of digenetic trematode parasites in the fishes inhabiting freshwater of J&K union territory.

scholarly journals Length-weight relationships of the Indian Major Carp, Labeo rohita (Cypriniformes: Cyprinidae) from six drainages of Ganga basin, India

2015 ◽  
Vol 7 (1) ◽  
pp. 71-77
Author(s):  
Javaid Iqbal Mir ◽  
Uttam Kumar Sarkar ◽  
Om Prakash Gusain ◽  
Arvind Kumar Dwivedi
Keyword(s):  
Labeo Rohita ◽  
Main Channel ◽  
Coefficient Of Determination ◽  
Important Food ◽  
Indian Major Carp ◽  
Ganga Basin ◽  
Natural Range ◽  
Food Fish ◽  
Management And Conservation ◽  
Tropical Freshwater

The Indian Major Carp, Labeo rohita, is a geographically widespread and economically important food fish species in tropical freshwater of India and adjacent countries. We studied the lengthweightrelationships of 1 033 specimens collected from the main channel of Ganga river and its five major drainages from March 2009 to July 2012. The length of males ranged from 16 to 92cm (females: 16to 94cm). The growth is allometric positive (b>3) for males, females and pooled sexes. The coefficient of determination (r2) in males ranged from 0,978 to 0,989 and for females from 0,958 to 0,985. Data from field populations are scarce and our results will be useful in the management and conservation of L. rohita populations in its natural range.

First molecular evidence of Thelohanellus wallagoi Sarkar, 1985 (Myxozoa) from economically important food fish, freshwater shark Wallago attu (Siluridae) in India

2018 ◽  
Vol 63 (3) ◽  
pp. 647-653
Author(s):  
Abhishek Gupta ◽  
Anshu Chaudhary ◽  
Anupma Garg ◽  
Chandni Verma ◽  
Hridaya S. Singh ◽  
...  
Keyword(s):  
Original Description ◽  
Molecular Evidence ◽  
Important Food ◽  
Spore Type ◽  
Wallago Attu ◽  
River Ganga ◽  
Food Fish ◽  
Gill Lamellae ◽  
Sutural View ◽  
18S Rdna Sequence

Abstract The freshwater shark Wallago attu (Bl. and Schn.) is a frequent silurid in the River Ganga and one of the most commercially exploit fish in India. In a survey on its infection with myxosporeans, spore type belongs to Thelohanellus species was found in the gills, kidney and intestine respectively. Through morphological and molecular investigations, we identified the spore as Thelohanellus wallagoi Sarkar, 1985. They were pyriform in valvular view and slim in sutural view, and had one pyriform polar capsule with four to five turns. The spores measured 8.0 × 4.0 × 2.3 μm. T. wallagoi developed in small cysts in the gill lamellae, whereas cyst and scattered spores of T. wallagoi were also found in the kidney and intestine respectively. The 18S rDNA sequence of T. wallagoi isolates recovered from gills, kidney and intestine were found similar to each other and differed from any other Thelohanellus species available in GenBank and validated its status after 32 years of original description. Phylogenetic analysis signified that T. wallagoi was placed sister to Myxobolus species in the clade that indicated the polyphyletic nature of the genus Thelohanellus.

scholarly journals A review of introduction of common carp Cyprinus carpio in Pakistan: origin, purpose, impact and management

2016 ◽  
Vol 74 (2) ◽  
pp. 71-80 ◽  
Author(s):  
Muhammd Naeem Khan ◽  
Khurram Shahzad ◽  
Ansar Chatta ◽  
Muhammad Sohail ◽  
Marina Piria ◽  
...  
Keyword(s):  
Common Carp ◽  
Cyprinus Carpio ◽  
Fish Farming ◽  
Inland Waters ◽  
Important Food ◽  
Policy Makers ◽  
Common Carp Cyprinus Carpio ◽  
The World ◽  
World Class ◽  
Food Fish

Abstract Common carp Cyprinus carpio was introduced from Thailand to Pakistan in 1964 for the purpose of aquaculture. Due to its high tolerance to temperature and turbidity, and prolific pond breeding habit, it was established promptly in most of natural inland waters, including rivers, lakes, streams, canals, wetlands and even village ponds of the country. Although common carp became one of the most abundant cyprinid species in inland waters and important food fish in Pakistan, its impact is not well documented. Fish farming of common carp has been carried out in Pakistan since 1970; initially it grew slowly but now it is playing an important role in the economy of the country by employing more than 400,000 people. Nowadays, farming of freshwater carps is present throughout Pakistan, especially in the provinces of Punjab and Sindh. There is a huge potential in common carp farming and it could help increase the livelihood of people and gross domestic product (GDP) of the country as well. Still, there is a need to improve the fish farming practice to meet the world-class demands that could only be possible by the keen interest of policy makers and stake holders with better management.

scholarly journals Maternal ancestry analyses of red tilapia strains based on D-loop sequences of seven tilapia populations

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7007
Author(s):  
Bingjie Jiang ◽  
Jianjun Fu ◽  
Zaijie Dong ◽  
Min Fang ◽  
Wenbin Zhu ◽  
...  
Keyword(s):  
Genetic Relationship ◽  
Nucleotide Diversity ◽  
Haplotype Diversity ◽  
Important Food ◽  
Red Tilapia ◽  
The Gift ◽  
D Loop ◽  
Food Fish ◽  
Genetic Structures ◽  
Relationship Of

Background Many tilapia species or varieties have been widely introduced and have become an economically important food fish in China. Information on the genetic backgrounds of these populations is deficient and requires more research, especially for red tilapia strains. Methods In the present study, displacement loop (D-loop) sequences were used to evaluate the genetic relationship and diversity of seven tilapia populations that are widely cultured in China; this was done specifically to speculate on the maternal ancestry of red tilapia strains. Three red tilapia varieties of Oreochromis ssp., Taiwan (TW), Israel (IL), and Malaysia (MY) strains and other populations, including O. aureus (AR), O. niloticus (NL), O. mossambicus (MS), and the GIFT strain of O. niloticus, were collected and analyzed in this study. Results A total of 146 polymorphic sites and 32 haplotypes of D-loop sequences were detected among 332 fish and four major haplotypes were shared among the populations. The TW and NL populations had a greater number of haplotypes (20 and 8, respectively). The haplotype diversity (Hd) and nucleotide diversity (π) of each population ranged from 0.234 to 0.826, and 0 to 0.060, respectively. The significant positive Tajima’s D value of neutral test were detected in the NL, IL, and MY populations (P < 0.05), which indicated these populations might have not experienced historical expansion. According to the pairwise F-statistics, highly significant genetic differentiations were detected among populations (P < 0.01), with the exception of the IL and MY populations (P > 0.05). The nearest K2P genetic distance (D = 0.014) was detected between the MS and TW populations, whereas, the farthest (D = 0.101) was found between the GIFT and AR populations. The results from the molecular variance analysis (AMOVA) showed that there was an extremely significant genetic variation observed among the populations (P < 0.01), which contained 63.57% of the total variation. In view of the genetic relationship of red tilapia strains with other populations, TW and IL were detected with more similar genetic structures related to MS, and MY was more genetically similar to GIFT (or NL), which could provide more genetic evidence for the red tilapia strains maternal ancestry.

Stomach Contents of New Zealand Inland Shags

1951 ◽  
Vol 2 (2) ◽  
pp. 245 ◽  
Author(s):  
P Dickinson
Keyword(s):  
New Zealand ◽  
Stomach Content ◽  
Stomach Contents ◽  
The State ◽  
Salmonid Fish ◽  
Freshwater Crayfish ◽  
Important Food ◽  
Phalacrocorax Carbo ◽  
Content Analyses ◽  
Food Fish

Twenty-nine stomachs of the large black shag (Phalacrocorax carbo (Linn.)) and 61 of the white-throated or little pied shag (P. brevirostris (Gould)) from the Rotorua-Taupo area were examined. Techniques used to determine the state of digestion and the identification of otoliths are discussed. Stomach content analyses showed that the food of lake-feeding shags in July consisted almost entirely of fish and freshwater crayfish. Bullies (Gobiomorphus sp.) were the most important food fish. Salmonid fish were found in one stomach (P. carbo).

Study on Biometric Parameters and Genetic Diversity of Labeo rohita from Harike Wetland-A Ramsar Site

2020 ◽  
Author(s):  
Surjya Narayan Datta ◽  
Armaandeep Kaur ◽  
Anuj Tyagi
Keyword(s):  
Genetic Diversity ◽  
Labeo Rohita ◽  
Coi Gene ◽  
Series Data ◽  
Ramsar Site ◽  
Important Food ◽  
Commercially Important ◽  
Food Fish ◽  
Harike Wetland ◽  
Catch Composition

Background: Harike wetland (31°08¢ N to 31°23¢ N latitudes and 74°90¢ E to 75°12¢ E longitudes) is an internationally important Ramsar site, supports rare, vulnerable and endangered plants, fish and other faunal species. Weed infestation, pollution and encroachment are considered as important threats of its biota thus time series data with respect to fish diversity, catch composition and genetic variability has an utter importance to interpret changes over time. Cyprinidae family of freshwater fishes includes carps is the largest fish family found in Harike wetland comprising around 50% of total fish composition by weight basis and among carps, Rohu (Labeo rohita) is one of the commercially important food fish species available throughout the year and preferred by consumers. As river Beas and Sutlej, two major rivers of Indus river system confluence at Harike thus possibility of variation within fish stock is very high. With this background present study was carried out to evaluate the fish biodiversity and catch composition of Harike wetland. Study also emphasized on biometrics, length –weight relationship and genetic diversity based on mitochondrial marker genes of commercially important food fish Labeo rohita. Methods: Assessment of fish catch composition and diversity were conducted in landing centre adjacent to Harike wetland through Rapid Fisheries Assessment by Market Survey (RFAMS) technique. Fin tissue samples were collected for genetic diversity analysis of L. rohita by cytochrome oxidase subunit I (COI) gene sequencing, From the fish genomic DNA a partial fragment of approximately 655bp was PCR amplified by FishF1 (5'-TCAACCAACCACAAAGACATTGGCAC-3') and FishR1 (5'-TCGACTAATCATAAAGATATCGGC AC-3') primer pair. Calculation of intraspecific mean and pairwise distances was performed by MEGA 6.0 software using the K2P parameters Results: Total 30 species of fishes were recorded from Harike wetland and these belong to 14 families and 21 genera. In L. rohita average weight (Wt), total length (TL), standard length (SL) and forked length (FL) were recorded 2600±5.64g (1700-3600 g), 58.2±5.65 cm (51.3-67.6cm), 48.0±8.54 cm (42.5-55.5cm) and 46.0±0.25 cm (38.0-54.5cm), respectively. Biometric study revealed that sufficient numbers of mature L. rohita are available in wetland. L. rohita established negative algometric growth (b= 2.701); thus species became slender as it increased in length. The pairwise distances ranged from 0.00 to 18.49% with a mean ±S.E value of 4.70%±0.40. Total of 9 haplotypes were observed in L. rohita COI sequences. The diversity in haplotype and nucletide values were observed 0.848 and 0.024, respectively. The present study states that L. rohita stocks in Harike wetland are genetically diverse.

scholarly journals Digenea in the surubim Pseudoplatystoma corruscans (Spix and Agassiz, 1829) (Siluriformes: Pimelodidae) of the upper São Francisco River, State of Minas Gerais, Brazil

2008 ◽  
Vol 51 (6) ◽  
pp. 1181-1185 ◽  
Author(s):  
Renata de Fátima da Silva Stravalli Corrêa ◽  
Marilia de Carvalho Brasil-Sato
Keyword(s):  
Geographic Distribution ◽  
Parasite Prevalence ◽  
Minas Gerais ◽  
Important Food ◽  
Sao Francisco River ◽  
Total Length ◽  
São Francisco River ◽  
Food Fish ◽  
Commercial Value ◽  
First Time

The specimens of surubim, Pseudoplatystoma corruscans (Spix and Agassiz, 1829), an important food fish with high commercial value in the Upper São Francisco River, were collected downstream from the Três Marias Dam, in the municipality of Três Marias, State of Minas Gerais, Brazil. Thirty-six individuals were examined and among the parasites, four species of Digenea were found: Witenbergia witenbergi Vaz, 1932 and Tylodelphys sp. (metacercarie), both with prevalence above 10%, followed by Acanthostomum gnerii (Szidat, 1958) and Acanthostomum sp.. The total length of the hosts did not influence the parasite prevalence. Witenbergia witenbergi occurred only in female hosts and the abundance of Tylodelphys sp. was higher in the males. These Digenea were recorded for the first time in P. corruscans, and their known geographic distribution has been expanded to the São Francisco Basin in Brazil.

scholarly journals Genetic diversity of Cyprinion macrostomus (Heckel, 1843) populations in the Euphrates and Tigris rivers based on partial cytochrome b sequences of mitochondrial DNA

2018 ◽  
Vol 65 (4) ◽  
Author(s):  
Arif Parmaksız
Keyword(s):  
Sequence Analysis ◽  
Genetic Structure ◽  
Cytochrome B ◽  
Nucleotide Diversity ◽  
Important Food ◽  
Tigris River ◽  
The Family ◽  
Total Dna ◽  
Food Fish ◽  
Neutrality Tests

Cyprinion macrostomus (Heckel, 1843), thriving in both Euphrates and Tigris river systems, is an economically important food fish species of the family Cyprinidae. It is important to know genetic structure of fis populations in terms of identification of genetic structure of stocks for facilitating sustainable fishing and conservation strategies.The present study, evaluated genetic structure of C. macrostomus populations in Euphrates and Tigris rivers using mtDNA cytochrome b sequence analysis. A total number of 44 C. macrostomus specimens were collected from Euphrates and Tigris rivers and total DNA was isolated from muscle tissue. Approximately 600 bp of mtDNA cyt b site was amplified by PCR and 8 polymorphic and 8 haplotypes were identified after sequence analysis. Mean haplotype and nucleotide diversity were calculated as 0.738 and 0.00253 respectively. Both populations had similar values in terms of haplotype as well as nucleotide diversity and neutrality tests were also found to be statistically insignificant.

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