Ichthyofaunal diversity in Bachan Gad and Kakda streams of the Mid-himalayan Ganga river system of Garhwal in relation to stream gradient and distance (original) (raw)
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SPATIAL DISTRIBUTION AND DIVERSITY OF FISHES IN DIFFERENT ECOLOGICAL SECTIONS OF SPRING- FED RIVER MANDAL FROM UTTARAKHAND, INDIA, 2018
ARTICLE INFO ABSTRACT The fish play an important role in the life of rural folk in Garhwal Himalaya as it is a cheaply available protein rich source. In the present communication an attempt has been made to study the spatial distribution, density and diversity of fishes in three different sections of river Mandal in Pauri Garhwal. The study was based on two spots in upper rhithon section, two spots on lower rhithron section and one spot in the lower potamon section. It was observed that the middle stretch (Lower rhithron zone) was more diverse and productive where fish productivity was 46 CPP at Spot no 3 (19 species) and 34 CPP at spot no 4 (13 species). Upper stretch of the river was less productive. The lowermost section has low diversity in term of taxon but the biomass production was maximum. Overall 20 taxa were observed wit the dominance of family cyprinidae with 10 taxon and cobitidae with 7 taxon. Channidae was represented by 2 taxon and family balitoridae, ambliceptidae and mastacembelidae by 1 taxon each. Diversity was assessed with the help of Simpson, Shannon and Wiener, Menhinick, Margalef and equitability J indices. Multivariate analysis was done with the help of cluster and principal component analysis. Some detrimental ecological parameters were also analysed which had either positive (pH and temperature) or negative (velocity of water current and dissoved oxygen) impact on fish population.
Journal of Aquatic Biology & Fisheries , 2021
The present study was conducted to document the fish assemblage structure and physicochemical parameters of an important tributary of river Bhagirathi in central Himalaya, India. The study reported altogether 14 fish species from Ranu-ki-gad stream belonging to two orders, three families and seven genera. Cyprinidae family (order Cypriniformes) was the dominating family, followed by the Cobitidae family (order Cypriniformes) and Sisoridae family (Siluriformes order), respectively. Among the species, Schizothorax richardsonii was dominating species, followed by Tor Putitora, Barilius bendelisis, Noemacheilus rupicola, Tor tor, and Pseudecheneis sulcatus. Habitat variability and hydrological parameters (water temperature, water velocity, pH, dissolved oxygen, free carbon dioxide, total dissolved solids and turbidity) along the stream significantly influenced the species richness and their assemblage structure. The lower stretch of the stream provides critical habitat for many hill stream fishes. The status of fish fauna was ascertained by CAMP (1998) assessment. Out of 14 fish species, the status of 2 species was not assessed due to data deficiency, four species were categorised as lower risk near threatened, four as vulnerable, and four species were under the endangered category.
Diversity and Composition of Freshwater Fishes in River Systems of Central Western Ghats, India
Environmental Biology of Fishes, 2003
The Western Ghats (India) is a region of high biological diversity and endemicity of terrestrial fauna, but very little is known about its freshwater species distributions. Four rivers, Sharavati, Aghanashini, Bedti and Kali, of the central Western Ghats were studied for their fish diversity and composition. A total species richness of 92 species (and an endemicity of 25%) was reported. A comparison of expected species richness (SR) estimates using different statistical estimators was made – these showed the expected SR to be in the range of 92–120 species. Many of the species were found to be shared with those belonging to the southern Western Ghats, but the study also unearthed new findings in terms of description of a new species and extension of the known distribution range of some of the species. The study at varying spatial and temporal scales also showed that while the rivers are very similar to each other in terms of the SR values, they do vary with respect to the species composition. Species compositions across upper (or lower) reaches of these rivers were found to be more similar to one another than the upstream and downstream reaches in the same river. Temporal patterns, with regard to diurnal activity of fishes were studied. These showed that of the 72 species collected at night, 29 were exclusive to night sampling. Though much of the information of the feeding and habitat preferences of the fishes in this region is lacking, it is speculated that the differences in their activity patterns could be related to feeding and predator avoidance.
Environment Conservation Journal 12(3) 101-108, 2011
Fish as a group, from biodiversity view point has the highest species diversity among all vertebrate taxa. Present communication deals with the reassessment of ichthyofaunal diversity of the river Bhilangna and its two sub tributaries, the Balganga and the Nailchami of Bhagirathi river system in Garhwal Himalaya. The observation made during study showed the occurrence of 22 fish species belonging to 2 orders, 3 families and 9 genera from varying habitat of falls, cascades, rapids, riffles and pools in various sections of river Bhilangna and its tributaries. Schizothorax richardsonii, S. plagiostomus are dominate species in the riverine segment of river Bhilangna while Cyprinus carpio (common carp) is the dominate species in impoundment segment of river Bhilangana (reservoir area). The comparison of results of present study with earlier reports revealed that fish fauna has decreased with passage of time in the Bhilangana river system which may be due to degradation and fragmentation of riverine habitat caused by various developmental activities, changes in the natural flow pattern of river, indiscriminate fishing by the use of destructive and unscientific fishing methods, and other natural calamities.
J. Appl. & Nat. Sci. 5 (2): 369-374 , 2013
Laster stream is a major tributary of river Mandakini, which in turn is a major tributary of river Alaknanda. Stream traverses a distance of ~40 km before joining with river Mandakini at Suryaprayag (Tilwara) in Rudraprayag district (Uttarakhand), India. Present study reports existence of twenty one indigenous fish species belonging to eight genera, three families and two orders from the Laster stream. Schizothorax richardsonii (Cyprinidae family) was the dominating species followed by S. plagiostomus, Barilius sp., Tor sp., Noemacheilus sp., Pseudecheneis sp., Glyptothorax sp. The distribution pattern (diversity and abundance) of these species had negative co-relation with the increase in stream altitude. Habitat conditions in the stream varied considerably from headwater to main stem. Present study also describes the habitat specificity of fish assemblage. Maximum species diversity (18 species) was recorded from pool habitat and was the most preferred habitat. Least species diversity (09 species) was recorded from cascade habitat. Riffle and rapid habitat recorded no difference in species diversity.
Journal of Applied and Natural Science, 2013
Laster stream is a major tributary of river Mandakini, which in turn is a major tributary of river Alaknanda. Stream traverses a distance of ~40 km before joining with river Mandakini at Suryaprayag (Tilwara) in Rudraprayag district (Uttarakhand), India. Present study reports existence of twenty one indigenous fish species belonging to eight genera, three families and two orders from the Laster stream. Schizothorax richardsonii (Cyprinidae family) was the dominating species followed by S. plagiostomus, Barilius sp., Tor sp., Noemacheilus sp., Pseudecheneis sp., Glyptothorax sp. The distribution pattern (diversity and abundance) of these species had negative co-relation with the increase in stream altitude. Habitat conditions in the stream varied considerably from headwater to main stream. Present study also describes the habitat specificity of fish assemblage. Maximum species diversity (18 species) was recorded from pool habitat and was the most preferred habitat. Least species dive...
Ichthyo-faunal divergence of Narmada River in Hoshangabad region and their conservation measures
Fishing is a major source of livelihood and food for peoples live around the river and village of Dongarwada. Therefore, study aimed to have a better knowledge of fish diversity of this region which will help for conservation planning of fishes in this region. Fish diversity in Narmada River was studied at Hoshangabad which is famous for its beautiful ghats and rich fish biodiversity. 50 fish species belonging to 32 genera and 14 families and 06 orders have been recorded. Percentage wise species composition showed Cypriniformes as dominant order constitutes (44%), followed by order Siluriformes that represents (26%), order Perciformes constituted (22%) whereas Masta-cembeliformes forms (4%) with Beloniformes and Osteoglossiformes constitute (2%). The present study shows that although this belt has rich biodiversity but due to several anthropogenic activities many important fishes like mahseer, are facing the danger of extinction. Therefore, adequate conservation is essential to protect fish species and for sustaining biodiversity. Our study may be beneficial for further environmental bio assessment.
Longitudinal distribution of the fish fauna in the river Ganga from Gangotri to Kanpur
Journal of Applied and Natural Science
Fish fauna of the river Ganga from Gangotri to Kanpur consisted of 140 fish species from 9 orders and 25 families; 63 fish species from 6 orders and 12 families in the mountain section (MS), while 122 species from 9 orders and 25 families in the Plains section (PS) of Upper Ganga. Cypriniformes and Cyprinidae were most species rich order and family in both sections. Forty six fish species primarily Cypriniformes and Siluriformes are common to both sections, only 17 in MS and 76 in PS. Orders Tetradontiformes, Osteoglossiformes and Clupeiformes were present in PS only. The taxonomic richness in the MS was low compared to PS. Probably motility and physiological requirements in respect of tolerance for temperature restrict faunal elements.