Impact of fishing with Tephrosia candida (Fabaceae) on diversity and abundance of fish in the streams at the boundary of Sinharaja Man and Biosphere Forest Reserve, Sri Lanka

Local communities in some Asian, African and American countries, use plant toxins in fish poisoning for fishing activities; however, the effects of this practice on the particular wild fish assemblages is unknown. This study was conducted with the aim to investigate the effects of fish poisoning using Tephrosia candida, on freshwater fish diversity and abundance in streams at the boundary of the World Natural Heritage site, Sinharaja Forest Reserve, Sri Lanka. A total of seven field trips were undertaken on a bimonthly basis, from May 2013 to June 2014. We surveyed five streams with similar environmental and climatological conditions at the boundary of Sinharaja forest. We selected three streams with active fish poisoning practices as treatments, and two streams with no fish poisoning as controls. Physico-chemical parameters and flow rate of water in selected streams were also measured at bimonthly intervals. Fish were sampled by electrofishing and nets in three randomly selected confined locations (6 x 2 m stretch) along every stream. Fish species were identified, their abundances were recorded, and Shannon-Weiner diversity index was calculated for each stream. Streams were clustered based on the Bray-Curtis similarity matrix for fish composition and abundance. Physico-chemical parameters of water were not significantly different among streams (P > 0.05). A total of 15 fish species belonging to four different orders Cypriniformes, Cyprinodontiformes, Perciformes and Siluriformes were collected; nine species (60 %) were endemic, and six (40 %) were native species. From these, 13 fish species were recorded in streams with no poisoning, while five species were recorded in streams where poisoning was practiced. Four endemic and one native fish species were locally extinct in streams where fish poisoning was active. Fish abundance was significantly higher in control streams (32-39/m2) when compared to treatment streams (5-9/m2) (P < 0.05). We concluded that fish poisoning with T. candida may have resulted in a significant reduction in species richness, total abundance and Shannon-Weiner diversity index of fish species in the studied streams at the boundary of Sinharaja forest. We recommend that this fishing practice should be strictly regulated, and to inform local communities about the legal status of fish poisoning, its consequences and the importance of fish diversity for local livelihoods and conservation purposes.

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Ichthyofaunal Diversity and Physico-Chemical Factors of Melamchi River, Sindhupalchok, Nepal

Journal of Institute of Science and Technology ◽

10.3126/jist.v21i1.16031 ◽

2016 ◽

Vol 21 (1) ◽

pp. 10-18

Author(s):

Abha R. Mishra ◽

Chitra Bahadur Baniya

Keyword(s):

Fish Species ◽

Fish Community ◽

Diversity Index ◽

Chemical Properties ◽

Habitat Characteristics ◽

Fish Diversity ◽

Physico Chemical ◽

Chemical Factors ◽

High Level

The fish community and physico-chemical properties at five sites of Melamchi River were studied monthly from January 2011 to December 2013. Melamchi River is one of tributaries larger Indrawati River basin, originates from the high snowy Jugal Mountain (5,875 m asl). Eleven fish species within two orders and five families were recorded. Cypriniformes was found to be the most dominant order with ten fish species. Schizothorax plagiostomus was the most common fish species followed by Neolissochilus hexagonolepis, and Psilorhynchus pseudecheneis. Shannon Wiener fish diversity index and species richness recorded were highest at site 2 and lowest at site 5, whereas, evenness index was highest at site 3. The cluster analysis revealed that similarity between fish species decreased as the distance between the sites increased. Fish species were found distributed among four groups with respect to the significant habitat characteristics in the redundancy analysis (RDA). River water was found well-oxygenated and alkaline at all sites. However, high level for turbidity (43.25/ NTU) was observed at site 5, which exceeded compliance levels of WHO indicating the influence of intensive agriculture and deforestation along river area. To improve fish diversity and water quality of this river proper monitoring and management are an urgent need.Journal of Institute of Science and TechnologyVolume 21, Issue 1, August 2016, Page: 10-18

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KEANEKARAGAMAN DAN KEKERABATAN IKAN FAMILI CYPRINIDAE PADA EKOSISTEM BENDUNGAN COLO SUKOHARJO JAWA TENGAH

EnviroScienteae ◽

10.20527/es.v14i2.5478 ◽

2018 ◽

Vol 14 (2) ◽

pp. 137

Author(s):

Ragil Nur Cahyono ◽

Agung Budiharjo ◽

Sugiyarto Sugiyarto

Keyword(s):

Fish Species ◽

Diversity Index ◽

Abiotic Factors ◽

Morphological Characters ◽

Cluster Method ◽

Fish Diversity ◽

Abiotic Factor ◽

Fish Family ◽

Water Ecosystem ◽

Before And After

The Cyprinidae fish family is a family of freshwater fish with the largest number of species and its presence is widespread almost all of the world. The main habitat of this family is the river's ecosystem, river damming changing the environmental conditions between the ecosystems before and after the dam's watergate. Such as Colo Dam that dammed Bengawan Solo River that allegedly affects the diversity of species of Cyprinidae fish. So this study was conducted in order to determine the diversity and kinship of the Cyprinidae fish family in the ecosystem before and after the Colo Dam watergate. Sampling was conducted September-October 2017 at Sukoharjo Colo Dam by Purposive sampling method. Identify fish species used Kottelat identification books. The diversity of fish species was calculated by Shannon Wiener's diversity index. The correlation between abiotic factor and fish diversity was analyzed by a regression test. The kinship of the fish was analyzed by the Ntsys cluster method (2.02i). The results showed that the Cyprinidae fish species that live in the Colo Dam ecosystem contain 10 species, the diversity of Cyprinidae fish in the fast-water ecosystem of station I is higher (0,96) then the slow-water ecosystem of station II, III, and IV (0,47; 0,73, and 0,58). Abiotic factors of current velocity affect the level of fish diversity reaches 91%. The Cyprinidae fish kinship rate has a coefficient of resemblance between 60% - 85%, fish with the same genus and many similarities in morphological characters and their behavior is categorized as having a close kinship.

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FISH DIVERSITY OF GHODAGHODI LAKE IN KAILALI, FAR-WEST NEPAL

Journal of Institute of Science and Technology ◽

10.3126/jist.v22i1.17762 ◽

2017 ◽

Vol 22 (1) ◽

pp. 120-126

Author(s):

Dipendra Joshi ◽

Bijaya K. C.

Keyword(s):

Species Richness ◽

Community Structure ◽

Fish Species ◽

Diversity Index ◽

Fish Diversity ◽

Channa Striatus ◽

Illegal Fishing ◽

Dominant Fish ◽

Fish Catch ◽

Excessive Proliferation

Ghodaghodi Lake is an ox-bow perennial lake of Ghodaghodi Lake Complex, situated in Kailali district. The present study was conducted to understand the fish diversity, community structure and distribution pattern in Ghodaghodi Lake. A total of 13 fish species were recorded from the different section of Ghodaghodi Lake, belonging to five order, eight family and eleven genera. According to fish catch the dominant order and family of Ghodaghodi Lake were found to be Cypriniformes (40%) and Cyprinidae (40%) respectively. The dominant fish species of Ghodaghodi Lake was Labeo gonius followed by Mystus tengara, Nandus nandus and Channa striatus. The highest diversity index (2.46), species richness (6.14) and evenness (0.96) of fish were recorded from station III during the month of January. Lowest diversity index (1.75) and evenness (0.90) was found in station II and during the month of October (2.25 and 0.88). Similarly, lowest species richness was found in station I (3.91) and during the month of July (5.82). Fish diversity and number in Ghodaghodi Lake were found to have decreased. This could be due to pollution, illegal fishing and excessive proliferation of aquatic weeds.Journal of Institute of Science and TechnologyVolume 22, Issue 1, July 2017, page: 120-126

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The character of the Bódva by the composition of the fishassociations

Acta Agraria Debreceniensis ◽

10.34101/actaagrar/25/3035 ◽

2007 ◽

pp. 37-44

Author(s):

Lajos Juhász

Keyword(s):

Fish Species ◽

Research Program ◽

Food Source ◽

Fish Fauna ◽

Chemical Characteristics ◽

Chemical Parameters ◽

Protected Species ◽

Physico Chemical ◽

Hilly Region ◽

Barbatula Barbatula

The Bódva is one of our rivers that flow outside the Hungarian borders and arrive to the country across the frontier.The Bódva is approximately 110 kilometres long, its upper course is mountaneous- like in its springfield in Slovakia and it reaches the Sajó by flowing among the lower hilly region. The river wall is ravine-like in more places, the river itself is devious, and the water basin is rather variable as in the underlay muddy segments and heavily shingly beds can also be found.By its fish fauna and physico-chemical characteristics, the Bódva is such aliving water that-after Borne and others (Nowicki, Thienemann) river zone system- can be regarded as an almost uniform typical Barbel zone.According to our research program (2001-2005) and literature resources we estimated the fish fauna of the Bódva on both the Slovakian and Hungarian course. From some four decades to the wide ecofaunistic examinations of the near past we surveyed the quondam and present fish species of the Bódva River. According to our survey some 40 species compose the recent fish fauna of this river.In the fish fauna of the Bódva those fish species that presently own a tight ecospectrum, sensitive to the changes of the environment thus so called indicator species, can also be found just like the less sensitive, invasive, aggressively reproducing species. By examining the changes in the fishfauna, the complex of those biogen and abiogen processes that affect the river can be indicated well. It can be stated that the fishfauna of the Bódva is rather rich with a countrywide measure also, and maintain a lot of rare, regressive protected and worth while protection species.In the last period of the construction, the racial and quantitive composition of the fishfauna of the upper course of the Bódva has changed significantly. Certain species (in the Hungarian course) has vanished almost totally or at least their number declined not ably. Among the vanishing species there are not only a few substantial, protected species of the fauna (e.g. Barbus pelononnesius petényi, Leucaspius delineatus, Zingel sterber, Barbatula barbatula), but the number of the once mass species also decreased appreciably (e.g. Rhodeus sericeus, Alburnoides bipunctatus, Cobitis elongatoides). With the above mentioned changes the number of other animals also decreased in the course that we examined (e.g. mussels, crabs). We examine the cause of these changes in the pollution of the river and according to that in the decrease of the food source and the negative changes of the physico-chemical parameters of the water.

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KUALITAS PERAIRAN SUNGAI MUSI BAGIAN TENGAH DAN HILIR SERTA KELIMPAHAN JENIS IKAN

Jurnal Penelitian Perikanan Indonesia ◽

10.15578/jppi.14.4.2008.335-344 ◽

2017 ◽

Vol 14 (4) ◽

pp. 335

Author(s):

Susilo Adjie

Keyword(s):

Water Quality ◽

Fish Species ◽

Middle Part ◽

Fish Distribution ◽

Survey Method ◽

Chemical Parameters ◽

River Waters ◽

Physico Chemical ◽

Musi River

Penelitian untuk mengetahui kualitas lingkungan perairan Sungai Musi bagian tengah dan hilir serta kelimpahan jenis ikan, telah dilakukan dari bulan April sampai dengan Oktober 2003. Metode penelitian menggunakan metode survei dengan menetapkan 15 stasiun pengamatan dari Sungai Musi bagian tengah sampai dengan hilir. Hasil pengamatan menunjukkan bahwa dari hasil pemeriksaan parameter fisika kimia air secara umum perairan Sungai Musi bagian tengah sampai dengan hilir belum terlihat ada indikasi pencemaran. Kehidupan ikan di Sungai Musi bagian tengah sampai dengan hilir belum terlihat ada gangguan akibat pencemaran air. Jenis-jenis ikan yang dijumpai di sepanjang stasiun pengamatan terdapat sekitar 85 jenis yang didominansi oleh famili Cyprinidae. Penyebaran jenis ikan terkonsentrasi di Sungai Musi bagian tengah +- 75 jenis dan bagian hilir +- 58 jenis. A study to determine the water quality in the middle and lower parts of Musi River as well as its fish distribution was conducted from April until October 2003. Research was done under survey method by setting 15 stations in the middle and lower parts of Musi River. Results of the features of the physico chemical parameters showed that Musi River waters in the middle and lower parts were not polluted. There were 85 fish founded in the observed areas and they were dominated by family of cyprinidae. 75 fish species were distributed in the middle part of Musi River and 58 fish species were scattered in the lower.

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KERAGAAN ALAT TANGKAP DAN JENIS IKAN DI PERAIRAN SUNGAI SIAK, PROVINSI RIAU

BAWAL Widya Riset Perikanan Tangkap ◽

10.15578/bawal.3.1.2010.1-8 ◽

2017 ◽

Vol 3 (1) ◽

pp. 1

Author(s):

Khoirul Fatah ◽

Makri Makri

Keyword(s):

Relative Abundance ◽

Fish Species ◽

Diversity Index ◽

Macrobrachium Rosenbergii ◽

Fish Diversity ◽

Fishing Activity ◽

Fish Yield ◽

Monthly Data ◽

Long Line ◽

Fishing Gears

Sungai Siak merupakan salah satu Sungai besar yang mengalir di Provinsi Riau yang memiliki banyak fungsi salah satu dari fungsi tersebut adalah usaha penangkapan ikan. Kegiatan penangkapan ikan di Sungai Siak menggunakan alat tangkap yang bersifat tradisional dan dilakukan secara kelompok atau perorangan. Penelitian ini bertujuan untuk mengetahui jumlah dan jenis alat tangkap jenis ikan, kelimpahan relatif, dan keanekaragaman jenis ikan yang ada di perairan Sungai Siakpada tahun 2008. Pengambilan data dilakukan di perairan Sungai Siak mulai dari Kuala Tapung sampai Muara Mandau. Pengambilan data alat tangkap dilakukan terhadap nelayan yang sedang mengoperasikan alat tangkap tersebut, sedang pengambilan data jenis dan hasil tangkapan ikan dilakukan secara langsung di lapangan. Pengumpulan data bulanan jenis dan hasil tangkapan dibantu oleh nelayan setempat sebagai enumerator. Hasil penelitian menunjukan terdapat delapanjenis alat tangkap yang beroperasi di Sungai Siak mulai dari Kuala Tapung sampai Muara Mandau yaitu jaring, rawai, tajur, luka, pengilar, belad, dan jala. Alat tangkap jaring dan jala jumlah dan sebarannya paling banyak ditemukan di sepanjang Sungai Siak mulai dari Kuala Tapung sampai Muara Mandau, lalu disusul alat tangkap belad. Untuk jenis ikan ditemukan 60 jenis ikan yang tertangkap dari berbagai jenis alat tangkap, ikan tersebut berasal dari 12 famili dan satu jenis krustacea yaitu udang galah (Macrobrachium rosenbergii), dari 12 famili tersebut kelimpahan relatif didominansi oleh famili Cyprinidae dan Engraulidae baik pada bulan Juni, Agustus, dan Oktober. Jika dilihat dari nilai Indeks keanekaragaman pada beberapa stasiun Sungai Siak mempunyai nilai indeks berkisar antara 0,5-3,0. Siak River one of the biggest river at Riau Province has a multipurpose function including fisheries. Fishing activity at the river used a traditional gear which was operated by individual or group fisherman. A study aimed to investigate number and type of fishing gears, fish species caught, relative abundance and fish diversity of the Siak River was conducted from Kuala Tapung until Muara Mandau in 2008. Data of fishing were collected from the fisherman operated the fishing gears. Monthly data on fish species caught and fish yield were collected directly by enumerator. Results of the study showed that eight kinds of fishing gears, namely gillnets, long line, hand line, traps (luka, pengilar, and belad), filtering device, and cast net were operated. The dominant fishing gear operated was gillnet and cast net and filtering device in the next. About sixty fish species from the twelve families and giant freshwaters prawn (Macrobrachium rosenbergii) were caught using those fishing gears. During June, August, and October, the relative abundance of the fish species was dominated by family of Cyprinidae and Engraulidae. The fish diversity index of the Siak River ranged from 0.5-3.0.

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Occurrence and diversity of microalgae in phytoplankton collected from freshwater community ponds of Hooghly District, West Bengal, India

Plant Science Today ◽

10.14719/pst.2019.6.1.426 ◽

2019 ◽

Vol 6 (1) ◽

pp. 8-16 ◽

Cited By ~ 1

Author(s):

Papiya Halder ◽

Manojit Debnath ◽

Samit Ray

Keyword(s):

Light Intensity ◽

West Bengal ◽

Diversity Index ◽

Winter Season ◽

Late Summer ◽

Diversity Indices ◽

Chemical Parameters ◽

Wiener Diversity Index ◽

Physico Chemical ◽

Multiple Variables

A study on diversity, seasonal occurrence, distribution percentage of microalgal taxa and physico-chemical parameters of five community ponds, located in Chinsurah town, Hooghly district of West Bengal, has been carried out. Correlation between occurrence of microalgal genera and some parameters of environment, physico-chemical nature of natural water bodies were explored by Canonical Correspondence Analysis (CCA). Diversity indices have been calculated using PAST software program. A total of 23 microalgal taxa belonging to four algal classes were recorded and the study indicated that the microalgal diversity vary with variation in physico-chemical parameters of water and light intensity. Out of these genera, occurrence of Chodatella sp. in late summer and Tetrallantos sp. and Synechocystis sp. in winter season were specific. In CCA, multiple variables (dissolved oxygen, water temperature, electrical conductivity, pH, light intensity and inorganic phosphorous) played a significant role in occurrence of microalgal taxa. Observation concluded that the Chlorophycean members were dominant throughout the study period and the Shannon–Wiener diversity index was highest for a site with large number of Chlorophycean member. This study will help in future to assess water quality.

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Keragaman dan Kelimpahan Plankton Sebagai Bioindikator Kualitas Lingkungan di Perairan Pantai Jayapura

JURNAL BIOLOGI PAPUA ◽

10.31957/jbp.56 ◽

2018 ◽

Vol 8 (2) ◽

Author(s):

Dewi Sulistiowati ◽

Rosye H.R. Tanjung ◽

Daniel Lantang

Keyword(s):

Water Quality ◽

Diversity Index ◽

Quality Standards ◽

Biological Data ◽

Chemical Parameters ◽

Index Analysis ◽

Size Number ◽

Physico Chemical ◽

Dry And Rainy Seasons

The aims of this research were to know the water environmental quality and to determine the diversity and abundance of plankton in Youtefa and Yos Sudarso Bay. The Sampling was conducted from October 2012 to January 2013 at two observation stations of Youtefa Bay and four observation stations of Yos Sudarso Bay during the dry and rainy seasons. The Sampling of plankton in each observation stations were made horizontally using a plankton net size number of 25. Biological data are determined using diversity index, uniformity index, dominance index and abundance calculations. Physico-chemical parameters were analyzed descriptively by comparing the result data of research with waters quality standards for marine’s biota based on decree of Environment Minister No. 51 year 2004. The results of water quality showed that in general, the quality of aquatic environment in Youtefa and Yos Sudarso Bay did not comply with water quality standards for marine’s biota issued by The Minister of Environment of Republic of Indonesia. While based on the diversity index analysis, water quality in Youtefa and Yos Sudarso Bay was categorized as a half polluted-heavily polluted. Diversity of plankton in Youtefa and Yos Sudarso Bay during the dry and rainy seasons was categorized as low-medium. Abundance of plankton in Youtefa and Yos Sudarso Bay was in low category. Key words: Abundance, diversity, plankton, Youtefa Bay, Yos Sudarso Bay.

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Fish Diversity and their Limnological Status of River Yamuna at Kalpi, U.P., India

Hydro Nepal Journal of Water Energy and Environment ◽

10.3126/hn.v19i0.15355 ◽

2016 ◽

Vol 19 ◽

pp. 57-62

Author(s):

Manoj Kumar Shukla ◽

Pushpendra Kumar Khare ◽

Sadhana Chaurasia ◽

Ravindra Singh

Keyword(s):

Fish Fauna ◽

Uttar Pradesh ◽

Quality Analysis ◽

Fish Diversity ◽

Chemical Parameters ◽

Yamuna River ◽

Urban Centers ◽

Physico Chemical ◽

Survival And Growth ◽

River Yamuna

We explore fish diversity and limnological status in the Yamuna River in Kalpi district, Uttar Pradesh, India. Several industrial and urban centers sit on the banks of the Yamuna in Uttar Pradesh. We selected four sampling stations on the Yamuna for purposes of fish fauna and water quality analysis over the course of a calendar year (October 2013 – September 2014). The samples were analyzed for selected physico-chemical analysis, and we recorded the types of fishes as well. We observed that most physico-chemical parameters were in a suitable range for the survival and growth of fish fauna. We recorded 29 species of fishes, belonging to 21 genera of 10 families.HYDRO Nepal JournalJournal of Water, Energy and EnvironmentIssue: 19Page: 57-62

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Diversity and Some Biological Aspects of Fishes in Lake Maybahr, Albuko Woreda, Ethiopia

International Journal of Zoology ◽

10.1155/2021/8745176 ◽

2021 ◽

Vol 2021 ◽

pp. 1-7

Author(s):

Gatriay Tut Deng

Keyword(s):

Fish Species ◽

Diversity Index ◽

Good Health ◽

Fish Diversity ◽

Wet Season ◽

Morphometric Measurements ◽

Significance Level ◽

Biological Aspects ◽

The Mean ◽

Number Of Individuals

Because fishes live in less-accessible habitats, their remarkable diversity is rarely appreciated. The fishery sector is growing rapidly worldwide with the intention of improving the livelihood in developing nations. Therefore, conservation and management of aquatic resources become eminent. Morphometric measurements of fishes are important tools in fish biology and fisheries assessment and conservation. Ethiopia is one of the developing countries with rich water resources. Although there are plenty of water bodies in the country, they are less explored for their ichthyofaunal documentation. Therefore, this study aimed to explore the diversity and some biological aspects of fishes in Lake Maybahr. The fish sample was collected from selected sampling sites using gill nets with varying mesh sizes. Fish identification was done in the field using relevant taxonomic keys. After identification, the total length (TL) and total weight (TW) of the specimens were measured to the nearest 0.1 cm and 0.1 g, respectively. After measurement, the samples were labeled and preserved in a 10% formalin solution. Two fish species were documented in the study area. The length-weight relationships indicated that both species (C. carpio and O. niloticus) exhibited allometric growth during the wet season. But C. carpio demonstrated an isometric growth in the dry season. The diversity index (H’ = 0.69) revealed that fish diversity in the current study is far less than the result reported in the other studies. The evenness index (J’ = 0.99) showed that each species is fairly represented by a number of individuals. The correlation coefficient value of length and weight parameters is statistically significant at a 1% significance level (s, R2 = 0.85). The mean FCF revealed that both fish species are in good health. Further study on local people’s perception, initiating fishing activities, and organizing and providing training to youth is recommended.

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