scholarly journals Factors influencing tropical Island freshwater fishes: species, status, threats and conservation in Hainan Island

2018 ◽  
pp. 6 ◽  
Author(s):  
Wen Xiong ◽  
Qiang Wang ◽  
Dong Xie ◽  
David H Fletcher ◽  
Dekui He
Keyword(s):  
Freshwater Fish ◽  
Native Species ◽  
Habitat Degradation ◽  
Current Knowledge ◽  
Fish Fauna ◽  
Hainan Island ◽  
Freshwater Fishes ◽  
Flow Modification ◽  
Fish Biodiversity ◽  
Freshwater Fish Fauna

Hainan Island is located within the Indo-Burma global biodiversity hotspot, however, the freshwater fish fauna on this island is poorly understood. Based on field investigations and literature review, we compiled a list of 154 freshwater fish species (138 native and 16 non-native) belonging to 10 orders, 31 families and 104 genera found on Hainan Island. Of these, 31 species are endemic to China. The native freshwater fish fauna in Hainan Island is affiliated to South China sub-region of the Oriental Region. Current knowledge suggests that overexploitation, water pollution, flow modification, habitat degradation, and non-native species have severely reduced the freshwater fish biodiversity in Hainan Island. To protect freshwater fish biodiversity and fisheries in Hainan Island, some new measures should be adopted and current measures better enforced. This study constitutes an important resource for conservation management of freshwater fishes in Hainan Island.

scholarly journals Decline in New Zealand's freshwater fish fauna: Effect of land use

2020 ◽  
Author(s):  
Michael Joy ◽  
KJ Foote ◽  
P McNie ◽  
M Piria
Keyword(s):  
New Zealand ◽  
Land Cover ◽  
Freshwater Fish ◽  
Native Species ◽  
Species Abundance ◽  
Fish Fauna ◽  
Fish Distribution ◽  
Individual Species ◽  
Freshwater Fish Fauna ◽  
Over Time

© 2019 CSIRO. The number of New Zealand's freshwater fish listed as threatened has increased since 1992 when the first New Zealand threat classification system list was compiled. In this study, temporal and land cover-related trends were analysed for data on freshwater fish distribution, comprising more than 20 000 records for the 47 years from January 1970 to January 2017 from the New Zealand Freshwater Fish Database. The analysis included individual species abundance and distribution trends, as well as an index of fish community integrity, namely the Index of Biotic Integrity (IBI). Of the 25 fish species that met the requirements for analysis to determine changes in the proportion of sites they occupied over time, 76% had negative trends (indicating declining occurrence). Of the 20 native species analysed for the proportion of sites occupied over time, 75% had negative trends; 65% of these were significant declines and more species were in decline at pasture sites than natural cover sites. The average IBI score also declined over the time period and, when analysed separately, the major land cover types revealed that the IBI declined at pasture catchment sites but not at sites with natural vegetation catchments.

scholarly journals Decline in New Zealand's freshwater fish fauna: Effect of land use

2021 ◽  
Author(s):  
Michael Joy ◽  
KJ Foote ◽  
P McNie ◽  
M Piria
Keyword(s):  
New Zealand ◽  
Land Cover ◽  
Freshwater Fish ◽  
Native Species ◽  
Species Abundance ◽  
Fish Fauna ◽  
Fish Distribution ◽  
Individual Species ◽  
Freshwater Fish Fauna ◽  
Over Time

© 2019 CSIRO. The number of New Zealand's freshwater fish listed as threatened has increased since 1992 when the first New Zealand threat classification system list was compiled. In this study, temporal and land cover-related trends were analysed for data on freshwater fish distribution, comprising more than 20 000 records for the 47 years from January 1970 to January 2017 from the New Zealand Freshwater Fish Database. The analysis included individual species abundance and distribution trends, as well as an index of fish community integrity, namely the Index of Biotic Integrity (IBI). Of the 25 fish species that met the requirements for analysis to determine changes in the proportion of sites they occupied over time, 76% had negative trends (indicating declining occurrence). Of the 20 native species analysed for the proportion of sites occupied over time, 75% had negative trends; 65% of these were significant declines and more species were in decline at pasture sites than natural cover sites. The average IBI score also declined over the time period and, when analysed separately, the major land cover types revealed that the IBI declined at pasture catchment sites but not at sites with natural vegetation catchments.

scholarly journals Status of Endemic Freshwater Fish Fauna Inhabiting Major Lakes of Turkey under the Threats of Climate Change and Anthropogenic Disturbances: A Review

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1534
Author(s):  
Daniela Giannetto ◽  
Deniz Innal
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Native Species ◽  
Fish Assemblages ◽  
Fish Communities ◽  
Fish Fauna ◽  
Current Status ◽  
Global Issue ◽  
Freshwater Fish Fauna ◽  
Endemic Fish

Due to its peculiar geographical position and its environmental heterogeneity, Turkey represents an important biodiversity hotspot for freshwater fish fauna. Unfortunately, native fish communities of Turkey, mainly from lentic ecosystems, have been massively altered in the past decades. Furthermore, these species, especially the endemic species, are now threatened by several human activities in addition to the global issue of climatic changes. The aim of this paper is to provide an updated review on the current status of endemic fish species from main lakes of Turkey including major threats affecting fish assemblages. By gathering data from the literature and authors’ personal observations, 62 endemic fish species were reported to occur in the considered 37 Turkish Lakes. The presence of non-native species, agriculture activities, climatic drought, and decreasing water level were found to be the threats that most affect the fish communities of the considered Turkish Lakes.

scholarly journals The Current Status of Indigenous Freshwater Fishes in Jordan

2012 ◽  
Vol 40 (1) ◽  
pp. 59-67
Author(s):  
Sayeeda Mir ◽  
Nasht Hamidan
Keyword(s):  
Water Resources ◽  
Exotic Species ◽  
Freshwater Fish ◽  
Endemic Species ◽  
Field Survey ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Current Status ◽  
Garra Rufa ◽  
Freshwater Fish Fauna

Considerable changes were revealed in the indigenous freshwater fish fauna during a field survey of six years from 2006 to 2008. Most of them are endangered and one endemic species, Aphanius sirhani, is under the threat of extinction. Four other species, Garra rufa, G. ghorensis, Nemacheilus insignis and  Aphanius dispar richardsoni are also endangered. Misuse of the limited water resources, intensification of agriculture, overexploitation of fishing and the  introduction of exotic species are considered to be major threats to Jordan’s  freshwater fish fauna. DOI: http://dx.doi.org/10.3329/bjz.v40i1.12895 Bangladesh J. Zool. 40(1): 59-67, 2012

scholarly journals Decline in New Zealand's freshwater fish fauna: Effect of land use

2020 ◽  
Author(s):  
Michael Joy ◽  
KJ Foote ◽  
P McNie ◽  
M Piria
Keyword(s):  
New Zealand ◽  
Land Cover ◽  
Freshwater Fish ◽  
Native Species ◽  
Species Abundance ◽  
Fish Fauna ◽  
Fish Distribution ◽  
Individual Species ◽  
Freshwater Fish Fauna ◽  
Over Time

© 2019 CSIRO. The number of New Zealand's freshwater fish listed as threatened has increased since 1992 when the first New Zealand threat classification system list was compiled. In this study, temporal and land cover-related trends were analysed for data on freshwater fish distribution, comprising more than 20 000 records for the 47 years from January 1970 to January 2017 from the New Zealand Freshwater Fish Database. The analysis included individual species abundance and distribution trends, as well as an index of fish community integrity, namely the Index of Biotic Integrity (IBI). Of the 25 fish species that met the requirements for analysis to determine changes in the proportion of sites they occupied over time, 76% had negative trends (indicating declining occurrence). Of the 20 native species analysed for the proportion of sites occupied over time, 75% had negative trends; 65% of these were significant declines and more species were in decline at pasture sites than natural cover sites. The average IBI score also declined over the time period and, when analysed separately, the major land cover types revealed that the IBI declined at pasture catchment sites but not at sites with natural vegetation catchments.

New records and range extensions to the Costa Rican freshwater fish fauna, with an updated checklist

Zootaxa ◽  
2021 ◽  
Vol 5083 (1) ◽  
pp. 1-72
Author(s):  
ARTURO ANGULO
Keyword(s):  
Freshwater Fish ◽  
New Taxa ◽  
Phylogenetic Relationships ◽  
New Records ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Costa Rican ◽  
Composition Distribution ◽  
Freshwater Fish Fauna ◽  
Annotated Checklist

The knowledge of the Costa Rican freshwater fish fauna continues to grow given the discovery of new taxa, the recognition of taxa resurrected from synonymy and the corroboration of new country records and new range extensions. Moreover, recent advances in the understanding of the phylogenetic relationships and status of many supraspecific groups have led to numerous taxonomic and nomenclatural changes. Given this, the purpose of this paper is to update the known composition, distribution and clasification of the Costa Rican freshwater fish fauna taking as reference the most recent list for the country published by Angulo et al. (2013). A total of 23 new country records (i.e., species; distributed in 17 families and 21 genera), 33 new range extensions (distributed in 20 families and 30 genera) and several nomenclatural changes are reported, illustrated and discussed here. An updated and annotated checklist of the freshwater fishes of the country (including data for a total of 283 species, 13 of which are exotic, distributed in two classes, 27 orders, 55 families and 136 genera) is also provided.  

scholarly journals Decline in New Zealand's freshwater fish fauna: Effect of land use

2021 ◽  
Author(s):  
Michael Joy ◽  
KJ Foote ◽  
P McNie ◽  
M Piria
Keyword(s):  
New Zealand ◽  
Land Cover ◽  
Freshwater Fish ◽  
Native Species ◽  
Species Abundance ◽  
Fish Fauna ◽  
Fish Distribution ◽  
Individual Species ◽  
Freshwater Fish Fauna ◽  
Over Time

© 2019 CSIRO. The number of New Zealand's freshwater fish listed as threatened has increased since 1992 when the first New Zealand threat classification system list was compiled. In this study, temporal and land cover-related trends were analysed for data on freshwater fish distribution, comprising more than 20 000 records for the 47 years from January 1970 to January 2017 from the New Zealand Freshwater Fish Database. The analysis included individual species abundance and distribution trends, as well as an index of fish community integrity, namely the Index of Biotic Integrity (IBI). Of the 25 fish species that met the requirements for analysis to determine changes in the proportion of sites they occupied over time, 76% had negative trends (indicating declining occurrence). Of the 20 native species analysed for the proportion of sites occupied over time, 75% had negative trends; 65% of these were significant declines and more species were in decline at pasture sites than natural cover sites. The average IBI score also declined over the time period and, when analysed separately, the major land cover types revealed that the IBI declined at pasture catchment sites but not at sites with natural vegetation catchments.

scholarly journals Freshwater Fishes and Zoogeography of Pakistan

1975 ◽  
Vol 45 (2) ◽  
pp. 143-180 ◽  
Author(s):  
Muhammad R. Mirza
Keyword(s):  
South Asia ◽  
Freshwater Fish ◽  
South Asian ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Transitional Region ◽  
Division Iii ◽  
Oriental Region ◽  
Freshwater Fish Fauna ◽  
High Asia

The freshwater fish fauna of Pakistan is briefly discussed. It is predominantly South Asian but High Asian and West Asian elements are also present. The African element is hardly perceptible. Five zoogeographical divisions of Pakistan are proposed on the basis of the composition of their fish fauna: (I) the High Asian Division; (II) the Aba-Sinh Division; (III) the Northwestern Montane Division; (IV) the Indus plain and adjoining hills Division; and (V) the Northwestern Baluchistan Division. South Asia and High Asia are recognized as two subregions within the Oriental Region, while West Asia is treated as a transitional region.

The Diversity of Freshwater Fishes in Haya, Mamberamo-Papua

2012 ◽  
Vol 9 (1) ◽  
Author(s):  
Robi Binur ◽  
Henny L. Ohee
Keyword(s):  
Freshwater Fish ◽  
Conservation Planning ◽  
New Record ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
North Coast ◽  
Monopterus Albus ◽  
The North ◽  
Freshwater Fish Fauna

This research aims improved data of the species and abudance freshwater fish for conservation planning Mamberamo region.  The survey was lasted 18 days from 5 February to 24 April 2008 in several habitat consists river, creeks, oxbowlake and stream. A total at least 20 species in 17 genera and 14 families were collected were captured using gillnet, castnet, handnet, longline and poisson plant from Deris sp. Two species new record for Mamberamo that is Chilaterina lorentzi was previously know only from Tawarin river on the north coast Papua about 200 km west Jayapura and Puive creek, tributary of the Pual River near Vanimo, PNG and Monopterus albus (intoduction fish) was not previously know in Mamberamo although Papua. The generally freshwater fish fauna were collected in Haya about 70 % similar to record from Dabra.

scholarly journals On the origin and diversification of Venezuelan freshwater fishes: the genus Gephyrocharax (Ostariophysi: Characidae) a case study

2013 ◽  
Vol 11 (3) ◽  
pp. 487-496 ◽  
Author(s):  
Ana Bonilla-Rivero ◽  
Héctor López-Rojas
Keyword(s):  
Genetic Variability ◽  
Freshwater Fish ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Geographic Range ◽  
Phylogeographic Analysis ◽  
Enzyme Systems ◽  
External Group ◽  
Freshwater Fish Fauna

We conducted a phylogeographic analysis of the genus Gephyrocharaxin Venezuela to evaluate geomorphologic evidence for the formation of the country's main watersheds and to establish a biogeographical hypothesis of possible diversification mechanisms of the Neotropical freshwater fish fauna. We assayed eight enzyme systems and general proteins to estimate genetic variability (H, P), intraspecific structuring in several Gephyrocharax valencia and G. venezuelae populations (FIS, FIT, and FST), and a phylogenetic approach for the three species of Gephyrocharax in Venezuela, using Corynopoma riisei as the external group. Fourteen presumptive lociindicate that populations of the three species of Gephyrocharaxanalyzed show a clear genetic inter-specific differentiation, determined by four loci with fixed alleles (GPI-B*,IDH*, ME-1*, and ME-2*). The resulting cladogram shows two major clades: a monophyletic group consisting of Gephyrocharax n. sp. and G. venezuelae(restricted to the northwest of the country) and a group formed exclusively by G. valencia (distributed along the largest geographic range). Speciation of the Venezuelan lineages of the genus Gephyrocharaxcould be explained by the origin and course movements of the present Orinoco River together with geomorphologic processes that have occurred in northern Venezuela since the Miocene.

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