scholarly journals Status of fish diversity in Surha Taal, a natural lake in the floodplains of river Ganga, in Ballia District, Uttar Pradesh, India

2020 ◽  
Vol 67 (3) ◽  
Author(s):  
A. K. Pathak ◽  
U. K. Sarkar ◽  
Rehana Abidi
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Conservation Status ◽  
Fish Diversity ◽  
Important Species ◽  
Post Monsoon ◽  
Natural Lake ◽  
Wallago Attu ◽  
River Ganga ◽  
Near Threatened

The study presents the status of fish diversity, abundance and habitat structure of Surha Lake, which is a perennial and natural lake fed by the river Ganga. The study was conducted between 2011 to 2013 covering pre and post-monsoon seasons. In total, 4,852 individual fish specimens were collected representing 66 fish species belonging to 23 families. The species diversity comprised 65 species in pre-monsoon and 60 species in post-monsoon season (p<0.05). The highest species diversity was recorded for the family Cyprinidae (22), followed by Bagridae (7). An assessment of conservation status of 66 fish species as per IUCN Red List 2019 criteria listed 6 species under near threatened (NT), 54 under least concern (LC) and two species under vulnerable (VU) category. The study reports several commercially important species under near threatened (Chitala chitala, Labeo pangusia, Ompok bimaculatus, Ompok pabda, , Ailia coila and Bagarius bagarius), which makes Surha Taal an important natural lake from fishery management point of view. The study also prioritised different habitat types important for different species. The slow water in the mid-channel areas of the lake were categorised as important habitats for near threatened and vulnerable fish species like C. chitala, B. bagarius and Wallago attu, which can be prioritised for population level management.

scholarly journals Indigenous Freshwater Ichthyofauna in the Dhanu River and Surrounding Wetlands of Bangladesh: Species Diversity, Availability, and Conservation Perspectives

Conservation ◽  
2021 ◽  
Vol 1 (3) ◽  
pp. 241-257
Author(s):  
Debasish Pandit ◽  
Shuva Saha ◽  
Mrityunjoy Kunda ◽  
Ahmed Harun-Al-Rashid
Keyword(s):  
Fish Species ◽  
Anthropogenic Impacts ◽  
Public Awareness ◽  
Conservation Status ◽  
Habitat Preferences ◽  
National Level ◽  
Fish Population ◽  
Population Trends ◽  
Fish Diversity ◽  
Wallago Attu

A checklist of the native fishes of the Dhanu River and adjacent waters at Mithamain Upazila under the Kishoreganj district of Bangladesh is prepared with details on their availability, conservation status, habitat preferences, population trends, and threats. Data were collected monthly by field survey, focus group discussions, and personal interviews by using a semi-structured questionnaire and a pictorial check list of fish species. A total of 91 indigenous fish species of 59 genera belonging to 29 families under 11 orders were documented where 17.6%, 27.5%, 31.9%, and 23.1% species were abundantly available, commonly available, moderately available, and rarely available, respectively. Among those, 24 fish species (26.4%) were under the threatened category (3 critically endangered, 11 endangered, and 10 vulnerable) according to the IUCN Bangladesh. Notably, the globally threatened Cirrhinus cirrhosus, Channa orientalis, and Wallago attu were available in the study area. Fish population trends of 24.2% and 59.3% of the entire fish species were found in decreasing trends at the global and national level, respectively. The leading threats to the fish diversity were indiscriminate overfishing followed by fishing by dewatering of wetlands, the katha fishing method, the use of deprecated fishing gears, etc. Minimizing anthropogenic impacts, enacting fishing laws, installing and managing fish sanctuaries, and raising public awareness can be effective for the conservation of existing fisheries resources.

scholarly journals Fish diversity and the conservation status of a wetland of Cooch Behar District, West Bengal, India

2018 ◽  
Vol 10 (3) ◽  
pp. 11423
Author(s):  
Ram Krishna Das
Keyword(s):  
West Bengal ◽  
Monsoon Season ◽  
Conservation Status ◽  
Single Species ◽  
Fish Diversity ◽  
Vulnerable Species ◽  
Post Monsoon ◽  
The Status ◽  
Weed Infestation ◽  
Near Threatened

A study was carried out from March 2016 to February 2017 to investigate the diversity of fishes and the conservation status of Bochamari Beel, a natural wetland of Cooch Behar District, West Bengal, India.  The study revealed the occurrence of 40 species of fishes belonging to 31 genera under six orders and 15 families.  Cyprinidae was the dominant family with 14 species followed by Channidae with four species, Ambassidae and Bagridae with three species each, Nandidae, Mastacembelidae, Belontiidae, Siluridae and Clariidae with two species each whereas Cobitidae, Belonidae, Gobiidae, Anabantidae, Tetraodontidae and Notopteridae were represented by a single species each.  The status of species of this beel included one Endangered species, one Vulnerable species and four Near Threatened species.  The maximum fish diversity was recorded in the monsoon season (H’=2.876) as compared with pre monsoon (H’=2.124) and post monsoon (H’ =1.735).  The evenness index varied from 0.640 (post monsoon) to 0.822 (monsoon), which indicates uneven distribution of fishes in this beel.  Indiscriminate fishing throughout the year, along with extensive weed infestation could be responsible for depletion of fish diversity in this beel.

scholarly journals Studies on fish diversity concerning Hydro-ecology of Kangsabasti river in Purulia district, West Bengal, India

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Manab Kumar Saha
Keyword(s):  
Fish Species ◽  
Physicochemical Parameters ◽  
West Bengal ◽  
Monsoon Season ◽  
Fish Diversity ◽  
Riverine Ecosystem ◽  
Post Monsoon ◽  
Fish Catch ◽  
Purulia District

Fish diversity depends both on various physicochemical parameters and the biological components of the riverine ecosystem. During the study period from January 2017 to December 2019 the highest fish diversity and density were observed in post-monsoon and lowest in pre-monsoon season in the Kangsabati River, Purulia District of West Bengal. Twenty five fish species, associated with 19 genera, 10 families and 5 orders have been identified. It was recorded that the Cyprinidae was the predominant family, which represented 56% of the entire fish catch.

scholarly journals Study of indigenous freshwater fish diversity of Bankura (West Bengal), India with special reference to Clarias batrachus

2018 ◽  
Vol 10 (4) ◽  
pp. 1162-1172
Author(s):  
Arindam Ganguly ◽  
Amrita Banerjee ◽  
Asish Mandal ◽  
Tapas Kumar Dutta ◽  
Pradeep Kumar Das Mohapatra
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
West Bengal ◽  
Clarias Batrachus ◽  
Fish Diversity ◽  
African Catfish ◽  
Hypophthalmichthys Molitrix ◽  
Local Markets ◽  
Wallago Attu ◽  
Bankura District

A study was conducted to determine the ichthyofaunal diversity in Bankura district of West Bengal. The area is traversed by major and minor rivers, feeder channels, numerous ponds, bills, reservoirs which have made this drought-trodden district as the highest producer of aquatic products within the state. Field survey was conducted in randomly selected local markets covering twenty-two blocks of Bankura. Fish sampling was carried out using various conventional fishing gears. The entire region harbours a wide variety of aquatic fishes. A total number of 92 indigenous fish species belonging to 30 families were identified during this study. The Cyprinidae family dominated the population with its 36 varieties followed by Channidae, Siluridae and Bagridae. Sonamukhi block situated in Shali basin; Sarenga and Raipur of Kangsabati basin; Dwarkeshwar and seven bundhs- enriched Bishnupur were the major habitats of small indigenous fishes. This paper also denotes presence of 12 globally endemic freshwater fish species viz. Hypophthalmichthys molitrix, Cyprinus carpio, Labeo nandina, Tor khudree, Chitala chitala, Bagarius bagarius, Wallago attu, Ompok pabda, Ailia coila, Anguilla bengalensis, Parambassis lala, Oreochromis mossambicus. The substitution of native Clarias batrachus with invasive African catfish C. gariepinus was observed in various local markets. Some traders even promote illicit farming of this banned species for their own profit. As a consequence, the indigenous, nutritionally-enriched C. batrachus is becoming more endangered.

scholarly journals Checklist of fishes of the Bakhira Tal and their conservation status

2018 ◽  
Vol 65 ◽  
Author(s):  
Farah Bano ◽  
Mohammad Serajuddin
Keyword(s):  
Conservation Status ◽  
Uttar Pradesh ◽  
Natural Wetland ◽  
International Union ◽  
Number Of Species ◽  
Wallago Attu ◽  
Near Threatened

The present study was carried out to assess the ichthyofaunal diversity of Bakhira Tal, a natural wetland in the district Sant Kabir Nagar of Uttar Pradesh. A total of 31 species belonging to 23 genera, 9 orders and 21 families were recorded. Maximum number of species recorded was from the Order Cypriniformes (32.25%), which was followed by Perciformes (25.80%), Siluriformes (16.12%), Ophiocephaliformes (9.67%), Beloniformes (3.22%), Cyprinidontiformes (3.22%), Symbranchiformes (3.22%), Mastacembeleformes (3.22%) and Tetraodontiformes (3.22%). Most of the species recorded in the present study were under Least Concern (29) and two species namely <em>Wallago attu</em> and <em>Ailia coila</em> were found to be under Near Threatened Category of the International Union for Conservation of Nature (IUCN).

Reef fish diversity at Aldabra Atoll, Seychelles, during the five years following the 1998 coral bleaching event

2005 ◽  
Vol 363 (1826) ◽  
pp. 257-261 ◽  
Author(s):  
Nigel Downing ◽  
Raymond Buckley ◽  
Ben Stobart ◽  
Larry LeClair ◽  
Kristian Teleki
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Coral Bleaching ◽  
Fish Diversity ◽  
Population Changes ◽  
Anthropogenic Pressures ◽  
Outer Reef ◽  
Total Fish ◽  
Related Population ◽  
Fish Species Diversity

Quantitative surveys of fish-species diversity were undertaken at 10 m and 20 m water depth on the outer reef at Aldabra Atoll, southern Seychelles, between November 1999 and May 2003. No significant changes in total fish-species diversity, numbers of families represented by these species, or numbers of pomacentrid or chaetodontid species were seen, contrary to fish-diversity changes seen on coral bleaching-impacted reefs elsewhere. The lack of additional anthropogenic pressures at remote Aldabara may make this system, and others like it, more tolerant of bleaching-related population changes.

scholarly journals Fish species diversity, fishing gears and crafts from the Buriganga river, Dhaka

2017 ◽  
Vol 45 (1) ◽  
pp. 11-26
Author(s):  
Mohammad Abdul Baki ◽  
Md Muzammel Hossain ◽  
Naser Ahmed Bhouiyan ◽  
Md Asaduzzaman
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Monsoon Season ◽  
Fish Diversity ◽  
Fishing Gear ◽  
Polluted River ◽  
Fishing Gears ◽  
Different Types ◽  
Buriganga River ◽  
Fish Species Diversity

Fish species, fishing gear and crafts in the most polluted river Buriganga were inventorial. During December, 2012 to November, 2013, a total of 56 fish species belonging to 20 families and 9 orders were recorded. Cypriniformes observed to be the most dominant order with 18 species (32%). The highest fish diversity was recorded during monsoon season, and lowest during winter. Maximum diversity variance (7.616 ± 2.76 Sd) observed in the monsoon season for 56 species (220 individuals). Also 12 different types of gears of two categories (active and passive) and two types of crafts were observed to be used for fishing in the study area. The highest number of species of fishes (n = 56) recorded in August and lowest (n = 3) in April and May 2013. Strong correlation between water depth and number of fish species (r = 0.74) and fishing activities (r = 0.96) was observed.Bangladesh J. Zool. 45(1): 11-26, 2017

scholarly journals Fish Diversity and Conservation Perspectives of Gandak River, India

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 76-84 ◽  
Author(s):  
P. K. Srivastava
Keyword(s):  
Distribution Pattern ◽  
Fish Species ◽  
Lower Risk ◽  
Uttar Pradesh ◽  
Assemblage Structure ◽  
Fish Diversity ◽  
Threat Status ◽  
Commercially Important ◽  
Gandak River ◽  
Near Threatened

Study of 10 km stretch of Gandak River in Uttar Pradesh revealed the ichthyofaunal diversity, assemblage structure, distribution pattern, threat status, ornamental and commercially important fishes. In all 54 fish species were recorded of many commercially important fishes. Among these species 45% belong to lower risk near threatened (LRnt), 26% vulnerable (VU), 11% lower risk least concern (LRlc), 11% not evaluated (NE) and 7% endangered (EN) category. Cyprinidae 33% were most important followed by Bagridae (11%), Channidae (9%), Tetradontidae (5%). DOI: http://dx.doi.org/10.3126/on.v11i1.8246 Our Nature Vol.11(1) 2013: 76-84

scholarly journals Diversity, distribution, and conservation status of Rubiaceae species in Peñablanca Protected Landscape and Seascape, Luzon, Philippines

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
Rachel Biag ◽  
GRECEBIO JONATHAN D. ALEJANDRO
Keyword(s):  
Species Diversity ◽  
Endemic Species ◽  
Protected Area ◽  
Conservation Status ◽  
Single Species ◽  
Mountain Range ◽  
Natural Park ◽  
Sierra Madre ◽  
Data Deficient ◽  
Near Threatened

Abstract. Biag RA, Alejandro GJD. Diversity, distribution, and conservation status of Rubiaceae species in Peñablanca Protected Landscape and Seascape, Luzon, Philippines. Biodiversitas 22: 3627-3636. Peñablanca Protected Landscape and Seascape (PPLS) is the largest protected area (PA) in the province of Cagayan, Luzon, Philippines. As part of the Sierra Madre Mountain Range and being contiguous with the Northern Sierra Madre Natural Park, there is no doubt that this PA would display species endemism and richness. Hence, botanical surveys through purposive sampling in seven barangays/districts were conducted in the PPLS to determine the species diversity and distribution of Rubiaceae. This study also aims to identify the endemic species and determine their conservation status. Forty-two species of Rubiaceae belonging to 19 genera and 13 tribes were documented in the current study. The most species-rich tribes are Spermacoceae (9 sp.), followed by Psychotrieae (7 sp.), Pavetteae (6 sp.), Naucleae (5 sp.), Ixoreae (4 sp.), Aleisantheae (2 sp.), Mussaendeae (2 sp.), and Vanguerieae (2 sp.). The rest of the tribes, i.e., Augusteae, Coffeeae, Gardenieae, Knoxieae, and Morindeae, are represented by a single species. Minanga, Nabbabalayan and Sisim harbor the most species. Results show that 19 Philippine endemic species are thriving in the PPLS. Of these, four are threatened species; one is near threatened, three being least concern, two as data deficient, and the rest were not evaluated.  

scholarly journals Diversity, potentiality, and conservation status of fish fauna in the upper Mahakam’s tributaries, East Kalimantan

2019 ◽  
Vol 19 (3) ◽  
pp. 391
Author(s):  
Jusmaldi Jusmaldi ◽  
Nova Hariani ◽  
Norbeta Doq
Keyword(s):  
Fish Species ◽  
Diversity Index ◽  
Conservation Status ◽  
Fish Fauna ◽  
Iucn Red List ◽  
Fish Diversity ◽  
East Kalimantan ◽  
Wiener Diversity Index ◽  
Data Deficient ◽  
Almost All

Diversity, potentiality and conservation status of fish fauna in upper Mahakam’s tributaries of east Kalimantan is unknown. The purposes of this study were to analysis species diversity, determine potentiality and conservation status of fish fauna in upper Mahakam’s tributaries, east Kalimantan. Fish sampling with purposive method was conducted in four tributaries, i.e Tepai River, Pahangai River, Danum Parai River, and Meraseh River for one month. Fishes were collected by several gears type. The results of this research showed that the total number of fish caught was 820 individuals; consist of 26 species, 7 families, and 4 orders. The Cyprinidae was the most dominant family found in all tributaries. The Shannon-Wiener diversity index in four tributaries were varied and ranging from 1.749-2.087. The highest fish diversity was recorded at Maraseh River followed by Pahangai River, Danum Parai River, and Tepai River. The low fish diversity was discovered at Tepai River may be due to differences in substrate type, water velocity, and water depth as compared to the Maraseh River, Pahangai River, Danum Parai River. The fish species similarity coefficient between four tributaries ranged from 0.606-0.842 and the highest dissimilarity was found between Tepai River and Danum Parai River. Almost all fishes categorized as edible fish for local consumption. Syncrossus hymenophysa and Gastromyzon lepidogaster have potential as ornamental fish. Regarding IUCN red list status, six fish species were grouped into least concern status, two species as data deficient, one species as near threatened, one species as endangered species and 16 other species were not on the list.

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