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6 documents found tagged fish diversity [X]
  • Title
    Fish diversity and assemblage structure in Ken River of Panna landscape, central India
    Type
    Journal Article
    Description
    Fish diversity and assemblage structure in relation to habitat variables were studied in 15 sites in Panna landscape, central India. The sampling was performed between February-April 2009. Fifty species of fishes belonging to 32 genera, 15 families and four orders were recorded from the study area. Cyprinids were the dominant assemblage members in all study streams (abundance ranges from 56.6-94.5 %). The cyprinid Devario aequipinnatus and the snakehead Channa gachua had highest local dominance (80% each) in Panna landscape. High Shannon and Margalef’s diversity was recorded in Madla region of Ken River. Similarity cluster analysis explained the study sites along Ken River (Gahrighat, Magradabri and Madla) had similar faunal assemblage. Canonical Correspondence Analysis (CCA) was performed to study the species association with a set of environmental variables. The CCA revealed that cyprinid abundance was associated with stream order, deeper habitat, flow and water temperature.
    Attribution
    Johnson J.A., Parmar R., Ramesh K., Sen S., Murthy R.S. (2012). Journal of Threatened Taxa 13(4) pp. 3161-3172; doi:10.11609/JoTT.o3024.3161-72
  • Title
    Freshwater fish fauna of the Ashambu Hills landscape, southern Western Ghats, India, with notes on some range extensions
    Type
    Journal Article
    Description
    A systematic, updated checklist of freshwater fish species of the west-flowing drainages of the Ashambu (Agasthyamala) Hills landscape in the southern Western Ghats of Kerala, India is provided, with notes on occurrence, status and ecology of endemic and threatened species. The checklist incorporates information from a review of taxonomic, exploratory and ecological literature concerning the area. A total of 103 species have been reported from the landscape, with 25 endemic to the Western Ghats. Range extension of four species, viz. Garra mcclellandi, G. hughi, Hypselobarbus jerdoni and Puntius mahecola is reported from the Ashambu Hills landscape.
    Attribution
    Abraham R.K., Kelkar N., Kumar A.B. (2011). Journal of Threatened Taxa 3(3) pp. 1585-1593; doi:10.11609/JoTT.o2528.1585-93
  • Title
    Ichthyodiversity of Periyar Tiger Reserve, Kerala, India
    Type
    Journal Article
    Description
    Previous checklists of fishes from the Periyar Tiger Reserve, Kerala merely included species from Periyar Lake and adjoining streams. To fill this lacuna, we conducted a comprehensive survey, across 10 diverse aquatic habitats within Periyar Tiger Reserve, revealing the occurrence of 54 species belonging to six orders and 19 families; an addition of 17 species to the previous lists. Twenty-four species found in this reserve were listed under different threat categories. Forty-six species were found only in less than four sampling sites of which 18 species were encountered in single location each. Nine species were very common, 10 common, 17 moderate, 12 rare and six very rare in their relative abundance. Twenty-two species are endemic to the Western Ghats of which six species are found only in the Periyar Tiger Reserve. The Periyar river-stream system had more number of fish species (36, 67%) than Pamba river-stream system. Among the different sampling sites, Azhutha had both the highest number of fish species (30) and the highest number of threatened fish species (14). The highest number of low abundant fish species (very rare/rare) was observed at Mlappara (7). Considering the restricted distribution, number of endemic fishes and threat status, it is necessary to implement urgent management plans for the conservation of freshwater fish fauna of Periyar Tiger Reserve.
    Attribution
    Radhakrishnan K.V., Kurup B.M. (2010). Journal of Threatened Taxa 10(2) pp. 1192-1198; doi:10.11609/JoTT.o2350.1192-8
  • Title
    Ichthyofaunal diversity of two beels of Goalpara District, Assam, India
    Type
    Journal Article
    Description
    Wetlands, known as beels in Assam, harbour rich fish fauna. Documentation of fish fauna in two beels of Goalpara district, Assam has been taken up for the first time (2005-2007). So far a total of 59 species belonging to 40 genera, 20 families and 8 orders have been recorded and listed in this paper. Of the collected species 17 were lotic species and 42 were lentic habitat fishes. These fishes are categorized into 13 vulnerable, 5 endangered and 1 critically endangered species (CAMP 1998). The two beels Sidli and Seksekia are fed by a channel from the river Brahmaputra.
    Attribution
    Saha S., Bordoloi S. (2009). Journal of Threatened Taxa 4(1) pp. 240-242; doi:10.11609/JoTT.o1806.240-2
  • Title
    Fish diversity studies of two rivers of the northeastern Godavari basin, India
    Type
    Journal Article
    Description
    Fish diversity was explored in two rivers of the northeastern Godavari basin: the Adan, tributary of the Painganga, and the Kathani, tributary of the Wainganga. Both rivers are part of the same basin but present different ecological, climatic and anthropogenic settings. Six sites were sampled in each river system over three years using gill nets, cast nets and locally available nets; the ‘catch per unit effort’ criterion was used for sampling. Forty-seven species of fish were identified. Species richness (Jackknife 1 and rarefaction) and diversity measures (Shannon and Simpson) were calculated and their values clearly show that the Kathani is a more diverse ecosystem in terms of fish diversity than the Adan. This difference is mainly due to anthropogenic influences upon the Adan.
    Attribution
    Heda N.K. (2009). Journal of Threatened Taxa 10(1) pp. 514-518; doi:10.11609/JoTT.o1764.514-8
  • Title
    Diversity, distribution and assemblage structure of fishes in streams of southern Western Ghats, India
    Type
    Journal Article
    Description
    Diversity, distribution and assemblage structure of fishes were studied in 10 selected streams of southern Western Ghats. The sampling was performed between April 2001 and March 2002. Sixty species of primary freshwater fishes belonging to four orders, 13 families and 27 genera were recorded from the study area. Cyprinids were the most dominant assemblage members in all study streams. Maximum number of species, number of individuals and cyprinids were recorded from Thalayanai stream. More specialized forms Homaloptera santhamparaiensis, Glyptothorax madraspatanum, Noemacheilus guentheri, N. keralensis, N. semiarmatus and N. triangularis were recorded in Panniyar stream. High diversity was observed in Achankoil stream. Evenness index of similarity was uniform in all study streams. Similarity cluster analysis showed streams from nearby basins had similar faunal assemblages. Principal Component Analysis was performed to study the similarity of fish assemblages between the study streams. The analysis described clear pattern of segregation between Thalayanai and Karaiyar (east flowing) and Kallar and Achankoil (west flowing) streams. Thirty-nine Western Ghats endemic fishes were recorded from the study area. Current distribution and threats to endemic fishes are discussed.
    Attribution
    Johnson J.A., Arunachalam M. (2009). Journal of Threatened Taxa 10(1) pp. 507-513; doi:10.11609/JoTT.o2146.507-13