Salinity tolerances of endemic freshwater fishes of south-western Australia: implications for conservation in a biodiversity hotspot

2011 ◽  
Vol 62 (1) ◽  
pp. 91 ◽  
Author(s):  
Stephen J. Beatty ◽  
David L. Morgan ◽  
Mahmoud Rashnavadi ◽  
Alan J. Lymbery
Keyword(s):  
Western Australia ◽  
Large Range ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Main Channel ◽  
Restricted Range ◽  
Fresh Groundwater ◽  
Secondary Salinisation ◽  
Freshwater Fish Fauna ◽  
Dispersal Capability

Secondary salinisation represents an important threat to terrestrial and aquatic habitats throughout the world. In south-western Australia, widespread salinisation of waterways has caused large range reductions in the highly endemic freshwater fish fauna. We hypothesised that differences in the distributions of three fish species within the salinised Blackwood River would be related to their salinity tolerances. Galaxias occidentalis was widespread throughout the catchment, whereas Nannoperca vittata was restricted to the main channel and freshwater tributaries of the lower catchment, and Nannatherina balstoni was restricted to those tributaries and a perennial section of the main channel that received a considerable amount of fresh groundwater. Acute salinity tolerances (Effect Concentrations) of G. occidentalis and N. vittata were similar (EC50 ∼14.6 g L–1), but significantly greater than that of N. balstoni (EC50 ∼8.2 g L–1). The greater geographical range of G. occidentalis, compared with N. vittata, may be a consequence of the dispersal capability of the former species, and the lower salinity tolerance of N. balstoni contributes to its highly restricted range. The findings demonstrate that secondary salinisation has greatly impacted these freshwater fishes, and fresh groundwater refuges, predicted to decrease due to reduced rainfall, appear crucial in maintaining remnant populations.

Survey of the endohelminth parasites of freshwater fishes in the upper Mezquital River Basin, Durango State, Mexico

Zootaxa ◽  
2009 ◽  
Vol 2164 (1) ◽  
pp. 1-20 ◽  
Author(s):  
G. PÉREZ-PONCE DE LEÓN ◽  
R. ROSAS-VALDEZ ◽  
B. MENDOZA-GARFIAS ◽  
R. AGUILAR-AGUILAR ◽  
J. FALCÓN-ORDAZ ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Point Of View ◽  
Helminth Parasites ◽  
Northern Mexico ◽  
Transitional Area ◽  
Freshwater Fish Fauna ◽  
New Hosts ◽  
Host Parasite

As a part of an ongoing inventory of the helminth parasites of freshwater fishes in Mexico, 676 specimens were collected between November 2007 and December 2008 in 23 localities along the upper Mezquital River Basin in Durango State, northern Mexico. Sixteen species of hosts, mostly corresponding to Nearctic freshwater elements, were studied. A total of 1,230 individual worms were collected during this survey, representing 25 species of endohelminths of which 9 were digeneans, 3 were cestodes, 4 were acanthocephalans, and 9 were nematodes. The checklist contains 24 new hosts and 42 new locality records. The information provided in this checklist may be helpful for our understanding of the biodiversity and historical biogeography of this host-parasite system, since the Mezquital River Basin mostly contains a Nearctic freshwater fish fauna, with a few Neotropical and endemic elements and may represent a transitional area from a biogeographical point of view.

A molecular assessment of species boundaries and phylogenetic affinities in Mogurnda (Eleotridae): a case study of cryptic biodiversity in the Australian freshwater fishes

2013 ◽  
Vol 64 (10) ◽  
pp. 920 ◽  
Author(s):  
Mark Adams ◽  
Timothy J. Page ◽  
David A. Hurwood ◽  
Jane M. Hughes
Keyword(s):  
Fish Fauna ◽  
Taxonomic Revision ◽  
Fold Increase ◽  
Freshwater Fishes ◽  
Additional Species ◽  
Sister Relationship ◽  
Freshwater Fish Fauna ◽  
Molecular Assessment ◽  
Cryptic Biodiversity ◽  
Australian Freshwater

As the driest inhabitable continent, it comes as no surprise that Australia has comparatively few species of freshwater-dependent fishes compared with land masses of similar size and latitudinal coverage. In addition to relatively low rainfall and few permanent waterbodies, a range of other climatic, geological, physical, and biogeographical factors are generally offered up, to account for the low species count in a country otherwise regarded as mega-biodiverse. Here, we challenge this traditional view by hypothesising that Australia’s lack of freshwater fishes largely reflects a dearth of detailed taxonomic activity. Using both allozyme and mtDNA markers, we undertook a molecular assessment on the Australian purple-spotted gudgeons (Mogurnda), recently subjected to a taxonomic revision that saw a three-fold increase in the number of described species. In addition to demonstrating additional, species-level biodiversity within M. adspersa, our genetic data revealed discordant patterns of mitochondrial and nuclear genetic affinities among populations in several species, plus a sister relationship between the two central Australian species. We discuss the broader implications of such cryptic biodiversity for the Australian freshwater fish fauna; most notable among these is our prediction that only 50% of species have been described.

Checklist of the Inland Fishes of El Salvador

Zootaxa ◽  
2013 ◽  
Vol 3608 (6) ◽  
pp. 440-456 ◽  
Author(s):  
CALEB D. MCMAHAN ◽  
WILFREDO A. MATAMOROS ◽  
FRANCISCO S. ÁLVAREZ CALDERÓN ◽  
WENDY YAMILETH HENRÍQUEZ ◽  
H. MICHELLE RECINOS ◽  
...  
Keyword(s):  
El Salvador ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Central American ◽  
Museum Specimens ◽  
Electronic Database ◽  
Freshwater Fish Fauna ◽  
Pacific Slope ◽  
Source Of Information ◽  
Tolerance To Salinity

The inland fish fauna of El Salvador and its distribution was originally described in 1925 by Samuel Hildebrand. That work has been the main source of information for freshwater fishes of El Salvador up to today. Based on the combination of an intensive literature review, electronic database searches, re-identification of museum specimens, and fieldwork, we hereby provide an updated checklist of the inland fishes of El Salvador. This checklist provides distributional data at the Salvadoran hydrographical and political (by department) levels. The checklist is systematically arranged at the ordinal and familial level and then alphabetically therein. The freshwater fish fauna of El Salvador includes 101 species divided into 64 genera, 29 families, and 14 orders. According to their supposed tolerance to salinity, 73% of these species are peripheral, 23% secondary, and only 4% are primary freshwater fishes. One species is endemic to the country, Amatitlania coatepeque. The low number of primary freshwater fishes and endemics is comparable to the Central American Pacific slope in particular, as well as northern Central America in general.

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

Salinization of southwestern Western Australian rivers and the implications for the inland fish fauna - the Blackwood River, a case study

2003 ◽  
Vol 9 (3) ◽  
pp. 161 ◽  
Author(s):  
David L. Morgan ◽  
Dean C. Thorburn ◽  
Howard S. Gill
Keyword(s):  
Western Australia ◽  
Fish Fauna ◽  
River System ◽  
Main Channel ◽  
Gambusia Holbrooki ◽  
River Catchment ◽  
Low Salinity ◽  
Western Australian ◽  
Freshwater Teleosts

Increasing salinities throughout southwestern Western Australia, facilitated by extensive land clearing, have compromised the region's highly endemic freshwater fishes. Salinization of the Blackwood River has resulted in the main channel and upper cleared catchment being dominated by estuarine and halotolerant teleosts. The non-halotolerant species are restricted to the forested non-saline tributaries of the lower catchment. Of the 12 943 fish (13 species) captured in 113 sites, the halotolerant introduced Mosquitofish Gambusia holbrooki was widespread and the most abundant, representing almost 52% of fish caught. The estuarine Western Hardyhead Leptatherina wallacei, which was also widespread throughout the main channel and upper catchment, was the next most abundant, representing ca. 24% of fish caught. Freshwater endemics represented ca. 23% of captures, with the Western Minnow Galaxias occidentalis and Western Pygmy Perch Edelia vittata accounting for most (i.e., ca. 20%). There were significant differences in teleost communities among the naturally vegetated, low salinity tributaries of the river compared with the main channel and upper cleared catchment. While the forested tributaries still contain populations of E. vittata, Nightfish Bostockia porosa and Mud Minnow Galaxiella munda, the elevated salinities in the upper reaches of the Blackwood River system appear to have caused a massive decline in, or extinction of, populations of these species. The protection of the region's unique freshwater teleosts relies on the preservation of their remaining habitat in both the uncleared catchments of the region and in the low salinity forested tributaries within largely cleared systems, such as those in the Blackwood River catchment.

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 Annotated checklist of the freshwater fishes of continental and insular Costa Rica: additions and nomenclatural revisions

Check List ◽  
2013 ◽  
Vol 9 (5) ◽  
pp. 987 ◽  
Author(s):  
Arturo Angulo ◽  
Carlos A. Garita-Alvarado ◽  
William A. Bussing ◽  
Myrna I. López
Keyword(s):  
Costa Rica ◽  
Fish Fauna ◽  
Freshwater Fishes ◽  
Costa Rican ◽  
Museum Specimens ◽  
Electronic Database ◽  
Freshwater Fish Fauna ◽  
Distributional Information ◽  
Annotated Checklist ◽  
Tolerance To Salinity

Based on a combination of intensive literature review, electronic database searches, re-identification of museum specimens and fieldwork, we hereby provide an updated checklist of the freshwater fishes of continental and insular Costa Rica. This checklist, systematically arranged at the ordinal and familial level, includes nomenclatural revisions, distributional information, and when appropriate, cross-references on the basis of Bussing (1998). According to our results, the native Costa Rican freshwater fish fauna is composed by 250 species, divided into 119 genera, 49 families and 19 orders; increasing in 108 the number of species originally reported by Bussing (1998). By far, the vast majority of these species, according to their supposed tolerance to salinity, are peripheral (63.2%), followed by secondary freshwater fishes (23.6%); only 13.2% are primary freshwater fishes. 24 species in this checklist appear to be endemic to Costa Rica. In addition to the native fauna 8 exotic species are reported.

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 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.

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