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Articoli di riviste sul tema "Freshwater fishes"

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Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 luglio 2024

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1

Bury, Gwendolynn W., Rebecca Flitcroft, Mark D. Nelson, Ivan Arismendi e Evan B. Brooks. "Forest-Associated Fishes of the Conterminous United States". Water 13, n. 18 (15 settembre 2021): 2528. http://dx.doi.org/10.3390/w13182528.

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Freshwaters are important, interconnected, and imperiled. Aquatic ecosystems, including freshwater fishes, are closely tied to the terrestrial ecosystems they are embedded within, yet available spatially explicit datasets have been underutilized to determine associations between freshwater fishes and forested areas. Here, we determined the spatial co-occurrence between freshwater fish distributions and forests within 2129 watersheds of the conterminous United States. We identified 21% of freshwater fishes as associated with forested areas, and 2% as strictly present only in highly forested areas (75–100% forested). The northern coasts and southeast regions, both heavily forested, showed the largest numbers of forest-associated fishes in highly forested areas and fish species richness. Fish associated with low-forested areas occurred in the southwest and central plains. Imperiled fishes were relatively evenly distributed among percent forest categories, which was distinctly different from patterns for all fishes. The identification of forest-associated fishes provides insights regarding species-specific landscape contexts. Determining these large-scale patterns of freshwater biodiversity is necessary for conservation planning at regional levels, especially in highly impacted freshwater ecosystems.

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2

Coburn, Miles, e Maurice Kottelat. "European Freshwater Fishes". Copeia 1998, n. 4 (30 dicembre 1998): 1116. http://dx.doi.org/10.2307/1447371.

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3

Rulifson, Roger A. "Migration of Freshwater Fishes". Transactions of the American Fisheries Society 132, n. 2 (marzo 2003): 406–7. http://dx.doi.org/10.1577/1548-8659(2003)132<0406b:>2.0.co;2.

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4

Daniels, Robert. "Freshwater Fishes of Virginia". Transactions of the American Fisheries Society 124, n. 2 (1 marzo 1995): 283–84. http://dx.doi.org/10.1577/1548-8659-124.2.283.

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5

Hutchings, Jeffrey A. "MIGRATION OF FRESHWATER FISHES". Copeia 2002, n. 3 (agosto 2002): 878–79. http://dx.doi.org/10.1643/0045-8511(2002)002[0878:]2.0.co;2.

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6

Cadwallader, P. L., e R. M. McDowall. "New Zealand Freshwater Fishes". Copeia 1994, n. 4 (19 dicembre 1994): 1054. http://dx.doi.org/10.2307/1446734.

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7

Burr, Brooks M., Melvin L. Warren, Robert E. Jenkins e Noel M. Burkhead. "Freshwater Fishes of Virginia". Copeia 1995, n. 1 (15 febbraio 1995): 259. http://dx.doi.org/10.2307/1446835.

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8

Winfield, Ian J. "CONSERVATION OF FRESHWATER FISHES". Journal of Fish Biology 89, n. 5 (novembre 2016): 2465–66. http://dx.doi.org/10.1111/jfb.13146.

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9

Ottewell, D. "FRESHWATER FISHES OF BRITAIN". Journal of Fish Biology 90, n. 5 (maggio 2017): 2222–23. http://dx.doi.org/10.1111/jfb.13302.

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10

Rose, George. "Migration of Freshwater Fishes". Fish and Fisheries 3, n. 4 (dicembre 2002): 361–62. http://dx.doi.org/10.1046/j.1467-2979.2002.00096.x.

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11

Seehausen, Ole, e Catherine E. Wagner. "Speciation in Freshwater Fishes". Annual Review of Ecology, Evolution, and Systematics 45, n. 1 (23 novembre 2014): 621–51. http://dx.doi.org/10.1146/annurev-ecolsys-120213-091818.

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12

Igoe, Fran. "Threatened Irish Freshwater Fishes". Biology & Environment: Proceedings of the Royal Irish Academy 104, n. 3 (1 gennaio 2004): 1–3. http://dx.doi.org/10.3318/bioe.2004.104.3.1.

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13

Ross, Stephen T. "Conservation of Freshwater Fishes". Fisheries 42, n. 9 (2 settembre 2017): 488. http://dx.doi.org/10.1080/03632415.2017.1369797.

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14

Angulo Sibaja, Arturo, Alex Molina Arias, Atsunobu Murase, Yusuke Miyazaki, William Albert Bussing e Myrna Isabel López Sánchez. "Fishes from the Tusubres River basin, Pacific coast, Costa Rica: checklist, identification key and photographic album". Check List 11, n. 3 (28 maggio 2015): 1666. http://dx.doi.org/10.15560/11.3.1666.

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A checklist of the fishes of the Tusubres River basin, Pacific coast of Costa Rica, compiled from field and museum surveys is herein presented. A total of 54 species, representing 47 genera and 27 families, were recorded. Peripheral species were dominant (64.8%), followed by secondary freshwater fishes (20.4%); primary freshwater fishes accounted only for 14.8% of the total fish diversity. Eleotridae (6 spp.), Gobiidae (6 spp.), Poeciliidae (5 spp.) and Characidae (4 spp.) were the most diverse. Two species (Caranx sexfasciatus, Carangidae; and Opisthonema libertate, Clupeidae) were new records for Costa Rican freshwaters, and two species (Gymnotus maculosus, Gymnotidae; and Lebiasina boruca, Lebiasinidae) was found to have expanded ranges. An identification key and a complete photographic album of all fish species recorded in the basin are presented. The results of this investigation provide a framework for future studies on biogeography, ecology and conservation on fishes from this area.

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15

Elías, Diego J., César E. Fuentes-Montejo, Yasmín Quintana e Christian A. Barrientos. "Non-native freshwater fishes in Guatemala, northern Central America: introduction sources, distribution, history, and conservation consequences". Neotropical Biology and Conservation 17, n. 1 (21 marzo 2022): 59–85. http://dx.doi.org/10.3897/neotropical.17.e80062.

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Non-native freshwater fishes have been introduced to Guatemalan freshwater ecosystems since the beginning of the last century without prior risk assessment or subsequent evaluation of their impacts. We synthesized historical records, and distributional data from a literature review, online databases and museum records of non-native freshwater fishes in Guatemala. We found records for 22 non-native freshwater fishes with the oldest records dating back to 1926. Non-native freshwater fishes were recorded in 64% of the river sub-basins in Guatemala and we identified that at least 12 species have established populations. The Jaguar guapote (Parachromis managuensis) and Tilapias (Oreochromis spp.) are the most widespread non-native fishes. The species of non-native freshwater fishes introduced indicates that they are human selected (e.g., for farming purposes). Our work shows that aquaculture has been the major driver of introductions in the country, but aquarium release has become an important source in the last 20 years. Given the potential impact of non-native freshwater fishes on native fauna and ecosystems, we highlight an urgent need to assess their ecological effects, as well as to establish a fish fauna monitoring program in Guatemala to detect new introductions. Government and non-governmental agencies should promote the use of native species to supply fish demands in alignment with environmental policies and the objectives of the fishing agency in Guatemala.

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16

MATAMOROS, WILFREDO A., JACOB F. SCHAEFER e BRIAN R. KREISER. "Annotated checklist of the freshwater fishes of continental and insular Honduras". Zootaxa 2307, n. 1 (9 dicembre 2009): 1–38. http://dx.doi.org/10.11646/zootaxa.2307.1.1.

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The freshwater fishes of Honduras were surveyed for a period of four years (2005–2008). Surveys were supplemented with both literature and museum collection reviews. Our results show that there are at least 172 species of fishes inhabiting Honduran mainland and insular freshwater systems, 166 native and six exotic. Primary freshwater fish diversity was low, with only eigth species (4.8%). The remaining species were either secondary freshwater (47 species, 28.3%) or peripheral (111 species, 66.9%). This checklist includes 36 new records for Honduras, and 12 range expansions. Nine species were found to be endemic; however, just two of them (Amphilophus hogaboomorum and Theraps wesseli) are already described. The depauperate primary freshwater fishes fauna of Honduras (8) is congruent with low primary freshwater fishes diversity found in the region between the Usumacinta River and the Nicaraguan great lakes. Although many previously unsampled regions of Honduras were visited as part of this project, there are a variety of remote areas that remain unstudied. While this paper contributes much to the understanding of the distribution and diversity of Honduran freshwater fishes, it is likely that much diversity there remains undocumented.

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Podeti. Koteshwar Rao. "Economically important freshwater fishes infected with fungi causes EUS". World Journal of Advanced Research and Reviews 17, n. 1 (30 gennaio 2023): 605–9. http://dx.doi.org/10.30574/wjarr.2023.17.1.0397.

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The aim of this study was to investigate fungal infections in Channa punctatus and Channa striatus twenty specimens of each species were studied for the presence of fungal infections. Infected fish’s shows clinical signs such as fungal growth on skin, fins, eyes, eroded fins and scales, hemorrhages on body surface and abdominal distension. The ability of aquatic fungi to cause diseases in fish is well known potentially all freshwater fishes their incubating eggs are susceptible to fungal infection. The most common fungal diseases of fish are saprolegniasis, disease caused by Achlya, branchiomycosis, epizootic ulcerative syndrome (EUS). Saprolegniasis is one of the most common infections of freshwater fishes in warm temperature and tropical waters; distributed throughout worldwide. Although there are many reports of different Achlya species infecting fish, there is no consistent and regularly observed clinical condition such as occurs with Saprolegnia. EUS is a seasonal epizootic condition of great importance in wild and farmed freshwater.

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18

Mogalekar, Havagiappa Sharnappa, e Johnson Canciyal. "Freshwater fishes of Orissa, India". Journal of Fisheries 6, n. 1 (24 marzo 2018): 587–98. http://dx.doi.org/10.17017/j.fish.27.

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Varied freshwater resources of Orissa blessed with diverse fish fauna. In total, 186 species of fishes belonging to 11 orders, 33 families and 96 genera were recorded from various freshwater bodies of Orissa. Cypriniformes was the most dominant order and Cyprinidae was diverse family. The trophic level of fishes of Orissa ranged from 2.0 to 4.5 containing 62.41% of carnivorous species. Fishery status revealed existence of 120 species worth for capture fishery, 101 species worth for ornamental fishery, 37 species worth for culture fishery and 25 species worth for sport fishery. Threat status comprises of one Critically Endangered species, five Endangered species, three Vulnerable species and remaining 177 species were Not Threatened. The findings of present communication may serve as baseline information for planning, conservation and management of fish and fisheries resources of Orissa.

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19

Daczkowska-Kozon, Elżbieta. "Campylobacter spp. in freshwater fishes". Acta Ichthyologica et Piscatoria 28, n. 2 (31 dicembre 1998): 91–98. http://dx.doi.org/10.3750/aip1998.28.2.09.

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The aim of this work was to assess to what extend freshwater fishes are carriers of Campylobacter spp. and what species dominate in this environment. Analysis of 106 alimentary canals representing 13 freshwater fish species originated from 5 different water bodies confirmed Campylobacter spp. presence in 8.5% of the samples tested. Numbers of campylobacters did not exceeded 10 CFU/g. The dominating species being C. coli.

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20

Igoe, Fran. "Introduction: Threatened Irish Freshwater Fishes". Biology and Environment: Proceedings of the Royal Irish Academy 104B, n. 3 (2004): 1–3. http://dx.doi.org/10.1353/bae.2004.0011.

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21

Lakra, Wazir Singh, M. Singh, Mukunda Goswami, A. Gopalakrishnan, K. K. Lal, V. Mohindra, U. K. Sarkar et al. "DNA barcoding Indian freshwater fishes". Mitochondrial DNA Part A 27, n. 6 (24 dicembre 2015): 4510–17. http://dx.doi.org/10.3109/19401736.2015.1101540.

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22

Unmack, Peter J. "Biogeography of Australian freshwater fishes". Journal of Biogeography 28, n. 9 (21 dicembre 2001): 1053–89. http://dx.doi.org/10.1046/j.1365-2699.2001.00615.x.

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23

Moyle, Peter B., e Rohan Pethiyagoda. "Freshwater Fishes of Sri Lanka". Copeia 1991, n. 4 (13 dicembre 1991): 1166. http://dx.doi.org/10.2307/1446131.

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24

Williams, L., R. A. Schoof, J. W. Yager e J. W. Goodrich-Mahoney. "Arsenic Bioaccumulation in Freshwater Fishes". Human and Ecological Risk Assessment: An International Journal 12, n. 5 (ottobre 2006): 904–23. http://dx.doi.org/10.1080/10807030600826821.

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25

Bianco, P. G. "Vanishing freshwater fishes in Italy". Journal of Fish Biology 37, sa (dicembre 1990): 235–37. http://dx.doi.org/10.1111/j.1095-8649.1990.tb05050.x.

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26

Economidis, P. S. "Endangered freshwater fishes of Greece". Biological Conservation 72, n. 2 (1995): 201–11. http://dx.doi.org/10.1016/0006-3207(94)00083-3.

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27

Albert, James S., Victor A. Tagliacollo e Fernando Dagosta. "Diversification of Neotropical Freshwater Fishes". Annual Review of Ecology, Evolution, and Systematics 51, n. 1 (2 novembre 2020): 27–53. http://dx.doi.org/10.1146/annurev-ecolsys-011620-031032.

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Neotropical freshwater fishes (NFFs) constitute the most diverse continental vertebrate fauna on Earth, with more than 6,200 named species compressed into an aquatic footprint <0.5% of the total regional land-surface area and representing the greatest phenotypic disparity and functional diversity of any continental ichthyofauna. Data from the fossil record and time-calibrated molecular phylogenies indicate that most higher taxa (e.g., genera, families) diversified relatively continuously through the Cenozoic, across broad geographic ranges of the South American platform. Biodiversity data for most NFF clades support a model of continental radiation rather than adaptive radiation, in which speciation occurs mainly in allopatry, and speciation and adaptation are largely decoupled. These radiations occurred under the perennial influence of river capture and sea-level oscillations, which episodically fragmented and merged portions of adjacent river networks. The future of the NFF fauna into the Anthropocene is uncertain, facing numerous threats at local, regional, and continental scales.

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28

Vila, Irma, Rodrigo Pardo e Sergio Scott. "Freshwater fishes of the Altiplano". Aquatic Ecosystem Health & Management 10, n. 2 (8 giugno 2007): 201–11. http://dx.doi.org/10.1080/14634980701351395.

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29

Weyl, Olaf LF. "Ecology of Australian Freshwater Fishes". African Journal of Aquatic Science 38, sup1 (29 novembre 2013): 121–22. http://dx.doi.org/10.2989/16085914.2013.833890.

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30

Mogalekar, Havagiappa Sharnappa, e Johnson Canciyal. "Freshwater fishes of Orissa, India". Journal of Fisheries 6, n. 1 (24 marzo 2018): 587. http://dx.doi.org/10.17017/jfish.v6i1.2018.246.

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Abstract (sommario):

Varied freshwater resources of Orissa blessed with diverse fish fauna. In total, 186 species of fishes belonging to 11 orders, 33 families and 96 genera were recorded from various freshwater bodies of Orissa. Cypriniformes was the most dominant order and Cyprinidae was diverse family. The trophic level of fishes of Orissa ranged from 2.0 to 4.5 containing 62.41% of carnivorous species. Fishery status revealed existence of 120 species worth for capture fishery, 101 species worth for ornamental fishery, 37 species worth for culture fishery and 25 species worth for sport fishery. Threat status comprises of one Critically Endangered species, five Endangered species, three Vulnerable species and remaining 177 species were Not Threatened. The findings of present communication may serve as baseline information for planning, conservation and management of fish and fisheries resources of Orissa.

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31

PUSEY, BRADLEY J., DAMIEN W. BURROWS, MARK J. KENNARD, COLTON N. PERNA, PETER J. UNMACK, QUENTIN ALLSOP e MICHAEL P. HAMMER. "Freshwater fishes of northern Australia". Zootaxa 4253, n. 1 (11 aprile 2017): 1. http://dx.doi.org/10.11646/zootaxa.4253.1.1.

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Northern Australia is biologically diverse and of national and global conservation signicance. Its ancient landscape contains the world’s largest area of savannah ecosystem in good ecological condition and its rivers are largely free-flowing. Agriculture, previously confined largely to open range-land grazing, is set to expand in extent and to focus much more on irrigated cropping and horticulture. Demands on the water resources of the region are thus, inevitably increasing. Reliable information is required to guide and inform development and help plan for a sustainable future for the region which includes healthy rivers that contain diverse fish assemblages. Based on a range of information sources, including the outcomes of recent and extensive new field surveys, this study maps the distribution of the 111 freshwater fishes (excluding elasmobranches) and 42 estuarine vagrants recorded from freshwater habitats of the region. We classify the habitat use and migratory biology of each species. This study provides a comprehensive assessment of the diversity and distribution of fishes of the region within a standardised nomenclatural framework. In addition, we summarise the outcomes of recent phylogeographic and phylogenetic research using molecular technologies to identify where issues of taxonomy may need further scrutiny. The study provides an informed basis for further research on the spatial arrangement of biodiversity and its relationship to environmental factors (e.g. hydrology), conservation planning and phylogentic variation within individual taxa.

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de Groot, S. J. "Freshwater fishes of the world". Aquaculture 69, n. 3-4 (aprile 1988): 390. http://dx.doi.org/10.1016/0044-8486(88)90347-x.

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MARCENIUK, Alexandre Pires, Bruno Eleres SOARES, Matheus Marcos ROTUNDO, Rodrigo Antunes CAIRES, Ricardo de Souza ROSA, Wagner César Rosa dos SANTOS, Ana Patrícia Barros CORDEIRO et al. "The bycatch of piramutaba, Brachyplatystoma vaillantii industrial fishing in a salinity and depth gradient in the Amazon estuary, Brazil". Acta Amazonica 53, n. 2 (giugno 2023): 93–106. http://dx.doi.org/10.1590/1809-4392202200342.

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ABSTRACT The piramutaba, Brachyplatystoma vaillantii is a freshwater catfish that is the most abundant fishery resource in the Amazon estuary. Piramutaba trawling is done on industrial fishing scale and is characterized by the presence of many freshwater and marine bycatch species, with and without commercial value. Here we describe the bycatch of the industrial fishery of piramutaba in the Amazon estuary and evaluate the relationship of two important environmental factors, depth and salinity, with the accidental capture of freshwater and marine fishes in the Amazon estuary in the rainy and dry seasons. We identified 21 cartilaginous fish species (19.1% freshwater and 80.9% marine) and 125 bony fish species (25.6% freshwater and 74.4% marine). The bycatch included 64 species without commercial value (43% of all bycatch species), which are always discarded. Freshwater and estuarine fishes exhibited significantly higher abundances in shallower environments, while marine fishes were similarly abundant along the entire depth gradient. On the contrary, the abundance of freshwater fishes significantly decreased, and that of estuarine and marine fishes significantly increased with increasing salinity. Regarding the conservation status of the bycatch species, one is classified as vulnerable (VU), and seven as critically endangered (CR). The information on the bycatch of piramutaba fishery in the Amazon estuary is important to subsidize regional fisheries policies and the management of protected areas.

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C. Roy, S. R. Dey e B. Bhowmik. "Freshwater fish parasite diversity in West Bengal – A review". Ecology, Environment and Conservation 29, n. 01 (2023): 161–69. http://dx.doi.org/10.53550/eec.2023.v29i01.026.

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Aquaculture has the potential to meet the need of growing demand of fish in an affordable price. But in capture and in culture fisheries the fishes face diseases that interfere in the production of fish. The occurrence of disease causes the reduced production in aquaculture or reduce the marketable value of fish because of change of flesh quality, thus hampering the production. Freshwater fishes whether they are cultured or wild face different types of diseases in their skin, gills, fins, blood, and internal organs. The parasites that cause the diseases may be protozoans or metazoans.The main protozoan freshwater fish diseases are ichthyophthiriasis, trichodiniasis, costiosis, chilodonellosis. The most common metazoan parasitic diseases of freshwater fishes are dactylogyrusis, gyrodactylosis, argulosis, myxosporidiasis, ligulosis, ergasilosis, lernaesis, etc. The focus of this review is to screen the research studies that takes place on freshwater fish parasites of West Bengal. The review also aims to study the diversity of freshwater fish parasites in West Bengal, so that it will helps the researcher to get an idea about the freshwater fish parasites and their mode of infection in the fishes. The research work that takes place in different regions of West Bengal. Some of them reveal new species of parasites in fishes. Protozoan, cnidarian, acanthocephalan, nematode, cestode, trematode, crustacean parasites are identified in freshwater fishes of West Bengal. Among the protozoans cailiates, flagellates are identified. Trichodinids are very common protozoan fish parasites in most districts. Parasites under genus Myxobolus, Dactylogyrus, Gyrodactylus, Argulus, Lernea are common among the metazoans.

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Lamothe, Karl A., e D. Andrew R. Drake. "Moving repatriation efforts forward for imperilled Canadian freshwater fishes". Canadian Journal of Fisheries and Aquatic Sciences 76, n. 10 (ottobre 2019): 1914–21. http://dx.doi.org/10.1139/cjfas-2018-0295.

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Freshwater ecosystems are among the most threatened environments on our planet. Disturbances across the terrestrial landscape accrue within freshwater ecosystems and, combined with global stressors such as climate change and invasive species, create a complex situation for recovering imperilled fishes. Given the drastic global decline of freshwater fishes, similarly extreme efforts are needed for their conservation and recovery — repatriation represents one such opportunity. Species repatriation describes the act of releasing a species in areas where extirpation has occurred. Paradoxically, a long history of fish introductions for recreational purposes exists, yet examples of repatriation for imperilled fishes are relatively rare compared with terrestrial species. Stemming from the restoration and species introduction literature, we identify five ecological themes to consider when evaluating repatriation potential of freshwater fishes and suggest that repatriation represents the “drastic” approach needed to achieve meaningful conservation milestones.

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M, Samynathan, Arya S, Raja S, Veena V, Sudheer Mohammed MM e Shameema P. "Distribution of freshwater fishes in Annassery pond, Thalakkulathoor Panchayat, Kozhikode Thaluk, Kerala". International Journal of Zoology and Applied Biosciences 7, n. 6S (13 novembre 2022): 14–23. http://dx.doi.org/10.55126/ijzab.2022.v07.i06.sp003.

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In the present communication, an attempt has been made to systematically classify freshwater fishes in Annassery pond Kozhikode. The survey was conducted for a period from June 2020 to May 2021 mainly focused on the distribution and diversity of freshwater fishes. The field studies identified about 8 species of fish belonging to 7 genera, 6 families, and 5 orders based on IUCN status. The fishes diversity in aquatic ponds are very limited and the first-ever systematic survey on the fish diversity of this pond. Among the diversified fishes, Siluriformes and Anabantiformes were found most dominant order represented by 7 and 2 genera. Currently, most of the freshwater fishes population are gradually decreasing may due to climatic factors influences, and manmade activities, in this context to assess the diversity of fishes are important to understand the existing native fish stocks and exotic fish population ratio at the pond level.

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Jithila, Puthiyakandy Janardhanan, e Puthanpurayil Kandambeth Prasadan. "Histopathology and other aspects of echinostome infection in freshwater fishes of the South Western Ghats, India". Brazilian Journal of Biological Sciences 6, n. 13 (2019): 445–51. http://dx.doi.org/10.21472/bjbs.061312.

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While investigating the trematode parasite infestation in the freshwater fishes of South Western Ghats, India we came across echinostome infection in three species of fishes Pseudosphromenus cupanus, Lepidocephalichthys thermlis and Aplochelus lineatus. Detailed histopathological studies on the infected kidney of the freshwater fish L. thermlis revealed severe damage and degeneration of their cells. The prevalence, intensity and mean abundance of infection of Echinostoma sp. in the three fishes were also recorded. The prevalences of Echinostoma sp. infection in the freshwater fishes P. cupanus, A. lineatus and L. thermalis were 5.55%, 66.66% and 25%, the intensities of infection were 4.5, 36 and 1, and the mean abundances were 0.25, 24 and 0.25, respectively.

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Contreras-MacBeath, Topiltzin, Diego A. Ardón, Yasmin Quintana, Arturo Angulo, Tim Lyons, Claudia Lardizabal, Caleb D. McMahan et al. "Freshwater Fishes of Central America: Distribution, Assessment, and Major Threats". Diversity 14, n. 10 (24 settembre 2022): 793. http://dx.doi.org/10.3390/d14100793.

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Central America contains a rich diversity of freshwater habitats that support more than 600 species of freshwater fishes. However, despite several perceived threats to the integrity of the freshwater habitats throughout the region, a formal analysis of extinction risk for the region’s ichthyofauna is lacking. In this manuscript, we report an updated checklist of species and a novel comprehensive assessment of the conservation status of Central American freshwater fishes by applying the IUCN Red List Categories and Criteria to species at the global level. We also analyze the distribution of freshwater fishes across Central America and generate baseline geospatial data that can be used in multi-species conservation planning processes, which is available through the Red List Website. Our results indicate that between 15 and 28% of freshwater fishes in the region are threatened with extinction, with considerable uncertainty resulting from elevated data deficiency. We identify major and widespread threats in the region, including pollution, agriculture, aquaculture, biological resource use, natural system modifications, invasive species, and land development. This analysis represents an important first step in formulating effective conservation planning and action initiatives for a taxonomic group that historically has received few protections and can be used to inform conservation priorities of freshwater ecosystems at both national and regional scales.

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39

Kumar, Ajay, Abhishek Kumar, ManiRam Prasad, Chandra Prakash e Sunil Kumar Srivastav. "Phosphocalcemic responses of vitamin D3 administered intact or hypophysectomized Heteropneustes fossilis maintained either in artificial freshwater or calcium deficient freshwater." World Journal of Biology and Biotechnology 5, n. 3 (27 giugno 2020): 15. http://dx.doi.org/10.33865/wjb.005.03.0332.

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Abstract (sommario):

The serum calcium level of vehicle injected fish (group-A) exhibits no alteration throughout the experiment. Vitamin D3 administration to fish Heteropneustes fossilis exhibited hypercalcemia from day 3 to day 7 (group-B). However hypophysectomized and vehicle injected fish showed hypocalcemia from day 3 to day 7 (group-C). While hypophysectomized and vitamin D3 injected fish exhibited hypercalcemia on day 3 till the end of experiment (group -D). The serum phosphate of group A fishes is unaltered throughout experiment. The phosphate level of vitamin D3 treated fish (group-B) exhibits hyperphosphatemia from day 3 to day 7. In group C fishes exhibited a significant decrease in phosphate level throughout the experiment. While the group D fishes showed hyperphosphatemia from day 3 to day 7. In group E fishes the serum calcium level remains unaffected up to day 3 the level decreases on day 5 to day 7. In group F fishes showed hypercalcemia from day 3 to day 7. In group H fishes a progressive decrease in serum calcium level is noticed on day 3 to day 7. The group H fishes shows increase in the serum calcium level from day 3 to day 7. The serum phosphate level of group E fishes showed a decrease from day 3 to day 5. The phosphate level increases from day 3 to day 7 in group F fishes. The phosphate level exhibited a decrease from day 3 to day 7 (group G). The phosphate level increases from day 5 to day 7 of group H fishes.

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40

Türkmen, Gürel. "First record of the Guppy (Poecilia reticulata Peters, 1859) in inlandwaters of Turkey". Ege Journal of Fisheries and Aquatic Sciences 36, n. 4 (1 dicembre 2019): 397–400. http://dx.doi.org/10.12714/egejfas.36.4.11.

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Abstract (sommario):

The ever-increasing global trade of ornamental aquarium fishes is one of the most important pathways for aquatic invasion. Occurrence of ornamental freshwater fishes in natural freshwaters has been increasing in recent years. The ornamental trade accounts for a limited but steadily growing proportion of fish introductions to Turkish inlandwaters. In this study, Guppy, Peocilia reticulata, is recorded for the first time from natural inlandwaters of Turkey. P. reticulata was probably released into the wild, but is now established in aquifer of Çeşme-Ildır (İzmir).

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41

Guerrero III, Rafael. "Commercially Caught Freshwater Fishes in the Philippines: Status, Issues, and Recommendations". Transactions of the National Academy of Science and Technology 44, n. 2022 (gennaio 2023): 1–15. http://dx.doi.org/10.57043/transnastphl.2022.2568.

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Abstract (sommario):

The Philippines is endowed with 406,328 hectares of inland waters consisting of lakes, marshes, and reservoirs. In 2018, the production of inland fisheries in the country was 164,835 metric tons (3.8% of total fisheries production) with a value of PHP 5.8 billion. This study was conducted to determine the status of commercially caught freshwater fishes in major inland waters based on available data, literature, and information from key informants and personal observations, and identify issues and recommend strategies for the sustainability of such fishes. Results of the analyses showed that the top 10 commercially caught freshwater fishes in 2017 were tilapia (50%), carp (16.4%), mudfish (11.0%), Asiatic catfish (6.6%), gourami (5.0%), white goby (3.8%), Manila catfish (2.6%), climbing perch (2.4%), silver perch (1.7%), and freshwater sardine (1.5%). Between 2005 and 2017, the highest increases in production were for the freshwater sardine (+49.7%), Asiatic catfish (+41.6%), and carp (+32.5%) while the highest decreases were for the silver perch (-69.8%), white goby (-39.5%), and Manila catfish (-26.6%). There was an average annual increase of 4.2% in the production of the 10 fishes for 2005-2017. The tilapia, mudfish, Asiatic catfish, and climbing perch were found in all regions of the country while the carp, gourami, white goby, Manila catfish, and silver perch were found in most regions. The freshwater sardine, on the other hand, was only found in the Lake Taal of Region IV-A (CALABARZON). The major issues threatening the sustainability of freshwater fishes were identified as overfishing, water pollution, invasive fishes, and environmental degradation. Recommendations for addressing such issues include the imposition of a closed fishing season, strict implementation of water quality standards, firm enforcement of rules and regulations for foreign/exotic fishes, and the reforestation of denuded forests.

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42

De Santis, Vanessa, Erik Jeppesen, Pietro Volta e Mustafa Korkmaz. "Impacts of Human Activities and Climate Change on Freshwater Fish—Volume II". Water 15, n. 23 (1 dicembre 2023): 4166. http://dx.doi.org/10.3390/w15234166.

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43

Mohamad Radhi, Amonodin, Mohd-Fadzil Nurul Fazlinda, Mohammad Noor Azmai Amal e Hashim Rohasliney. "A review of length-weight relationships of freshwater fishes in Malaysia". Transylvanian Review of Systematical and Ecological Research 20, n. 1 (1 gennaio 2018): 55–68. http://dx.doi.org/10.1515/trser-2018-0005.

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Abstract (sommario):

Abstract This manuscript reviews the length-weight relationships (LWRs) of freshwater fishes in Malaysia. A total of 102 LWRs of fishes gathered from literature pertaining to 64 freshwater fish species were analysed. A meta-analysis from 13 previous reports showed that the b values was ranged from 2.19 (Clarias batrachus) to 4.106 (Barbodes binotatus). Out of 64 observed species, 47 species (11 families) experienced positive allometric growth, while another 23 species (eight families) and 31 species (12 families) were recorded under isometric and negative allometric growth, respectively. The fish LWRs observed can be used as an indicator of environmental changes and fish ecological health for freshwater fishes in Malaysia.

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44

Macalisang, Maria Joana Cristina C., Xyrra Jeremiah C. Mazo e Jeric B. Gonzalez. "Freshwater Fishes of Wetlands in San Agustin, Romblon, Philippines". UTTAR PRADESH JOURNAL OF ZOOLOGY 44, n. 15 (25 luglio 2023): 55–63. http://dx.doi.org/10.56557/upjoz/2023/v44i153569.

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Abstract (sommario):

The Philippines is a globally significant hotspot for biological diversity and a center for endemism, but much of the studies are centered on terrestrial and marine biodiversity, and little is known about the diversity and status of freshwater fishes. In Romblon, no research had been conducted formally on these organisms. Thus, this study was realized. This study aimed to assess the freshwater fishes of San Agustin, Romblon using modified hoop net, gill net, scoop net and hook and line on December 2016 to January 2017, and July 2017 to December 2017. There were thirty-one species of freshwater fishes in San Agustin, Romblon which dominantly belonged to order Perciformes. These are common in the stream, irrigation creek and canal. Majority of these fishes are native to the Philippines and are utilized for food by the locals. Most of these species were classified in the Least Concern category by the IUCN Red List. Since the sampling was conducted during the wet season, this study strongly recommends conducting another investigation during the dry season. Biodiversity assessment on freshwater fishes in San Agustin, Romblon should also be done to prove the diversity of the freshwater fish in the area. On the other hand, this study suggests conducting a Tablas-wide study as well as to the other neighboring Island such as Sibuyan, and Romblon Island.

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45

UCHANG, FELLICIA INCHING, YANG LEE, FREDDY KUOK SAN YEO e YEE LING CHONG. "Fish Endoparasites from Streams near Paddy Fields in Serian and Padawan, Western Sarawak". Trends in Undergraduate Research 2, n. 1 (28 giugno 2019): a7–14. http://dx.doi.org/10.33736/tur.1547.2019.

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Abstract (sommario):

The fish health status and parasitic infection in paddy fields are understudied in Borneo. This study was done to compare the prevalence and abundance of parasites on freshwater fishes in the upstream and downstream rivers of paddy fields. Parasite study on freshwater fishes was done by collecting live fish samples using ten minnow traps with baits at each site in Serian and Padawan, Sarawak, from October 2017 until March 2018. A total of 120 freshwater fishes were examined during this study period. Cold anaesthesia was applied on live samples prior to ectoparasite and endoparasite microscopic screening, which involved scraping of outer body mucous and removal of fish intestines, respectively. No ectoparasites were recovered from the fish samples. A total of 19 (15.83%) fishes from Cyprinids were infected with endoparasites. From these, 58 individuals of endoparasites were recovered. Two groups of parasites, namely Nematoda (Cucullanus sp.) and Trematoda (unidentified), were recovered from the fish intestines. From this study, there was a significant difference between the upstream fishes and downstream fishes in their endoparasite infection at both Triboh Village (p = 0.035) and Annah Rais Village (p = 1.445 × 10-6) using two samples t-test. The endoparasite abundance in fish was higher in the streams where there was less human disturbance. This study may serve as a baseline study on the parasitic infections of freshwater fishes in streams near paddy fields or other agricultural area in Sarawak.

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46

Lintermans, Mark, Hayley M. Geyle, Stephen Beatty, Culum Brown, Brendan C. Ebner, Rob Freeman, Michael P. Hammer et al. "Big trouble for little fish: identifying Australian freshwater fishes in imminent risk of extinction". Pacific Conservation Biology 26, n. 4 (2020): 365. http://dx.doi.org/10.1071/pc19053.

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Abstract (sommario):

Globally, freshwater fishes are declining at an alarming rate. Despite much evidence of catastrophic declines, few Australian species are listed as threatened under national legislation. We aim to help redress this by identifying the Australian freshwater fishes that are in the most immediate risk of extinction. For 22 freshwater fishes (identified as highly threatened by experts), we used structured expert elicitation to estimate the probability of extinction in the next ~20 years, and to identify key threats and priority management needs. All but one of the 22 species are small (<150mm total length), 12 have been formally described only in the last decade, with seven awaiting description. Over 90% of these species were assessed to have a >50% probability of extinction in the next ~20 years. Collectively, the biggest factor contributing to the likelihood of extinction of the freshwater fishes considered is that they occur in small (distributions ≤44km2), geographically isolated populations, and are threatened by a mix of processes (particularly alien fishes and climate change). Nineteen of these species are unlisted on national legislation, so legislative drivers for recovery actions are largely absent. Research has provided strong direction on how to manage ~35% of known threats to the species considered, and, of these, ~36% of threats have some management underway (although virtually none are at the stage where intervention is no longer required). Increased resourcing, management intervention and social attitudinal change is urgently needed to avert the impending extinction of Australia’s most imperilled freshwater fishes.

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47

Esch, Gerald W., e Glenn L. Hoffman. "Parasites of North American Freshwater Fishes". Journal of Parasitology 86, n. 1 (febbraio 2000): 66. http://dx.doi.org/10.2307/3284910.

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48

Coelho Florindo, Maite, Gabriela Tomas Jeronimo, Lilian Dordete Steckert, Monyele Acchile, Aline Brum Figueredo, Eduardo Tavares Goncalves, Lucas Cardoso, Natalia da Costa Marchiori, Guilherme da Costa Assis e Mauricio Laterca Martins. "Metazoan parasites of freshwater ornamental fishes". Latin American Journal of Aquatic Research 45, n. 5 (10 novembre 2017): 992–98. http://dx.doi.org/10.3856/vol45-issue5-fulltext-15.

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49

Black, John J., e Paul C. Baumann. "Carcinogens and Cancers in Freshwater Fishes". Environmental Health Perspectives 90 (gennaio 1991): 27. http://dx.doi.org/10.2307/3430842.

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50

Rajeev Raghavan. "Freshwater fishes of the Arabian Peninsula". Journal of Threatened Taxa 13, n. 14 (26 dicembre 2021): 20309–10. http://dx.doi.org/10.11609/jott.7804.13.14.20309-20310.

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