Global biogeographical regions of freshwater fish species

AbstractAimTo define the major biogeographical regions and transition zones for freshwater fish species.TaxonStrictly freshwater species of actinopterygian fish (i.e., excluding marine and amphidromous fish families).MethodsWe based our bioregionalisation on a global database of freshwater fish species occurrences in drainage basins, which, after filtering, includes 11 295 species in 2 581 basins. On the basis of this dataset, we generated a bipartite (basin-species) network upon which we applied a hierarchical clustering algorithm (the Map Equation) to detect regions. We tested the robustness of regions with a sensitivity analysis. We identified transition zones between major regions with the participation coefficient, indicating the degree to which a basin has species from multiple regions.ResultsOur bioregionalisation scheme showed two major supercontinental regions (Old World and New World, 50% species of the world and 99.96% endemics each). Nested within these two supercontinental regions lie six major regions (Nearctic, Neotropical, Palearctic, Ethiopian, Sino-Oriental and Australian) with extremely high degrees of endemism (above 96% except for the Palearctic). Transition zones between regions were of limited extent compared to other groups of organisms. We identified numerous subregions with high diversity and endemism in tropical areas (e.g. Neotropical), and a few large subregions with low diversity and endemism at high latitudes (e.g. Palearctic).Main conclusionsOur results suggest that regions of freshwater fish species were shaped by events of vicariance and geodispersal which were similar to other groups, but with freshwater-specific processes of isolation that led to extremely high degrees of endemism (far exceeding endemism rates of other continental vertebrates), specific boundary locations, and limited extents of transition zones. The identified bioregions and transition zones of freshwater fish species reflect the strong isolation of freshwater fish faunas for the past 10 to 20 million years. The extremely high endemism and diversity of freshwater fish fauna raises many questions about the biogeographical consequences of current introductions and extinctions.

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Global biogeographical regions of freshwater fish species

Journal of Biogeography ◽

10.1111/jbi.13674 ◽

2019 ◽

Vol 46 (11) ◽

pp. 2407-2419 ◽

Cited By ~ 11

Author(s):

Boris Leroy ◽

Murilo S. Dias ◽

Emilien Giraud ◽

Bernard Hugueny ◽

Céline Jézéquel ◽

...

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Freshwater Fish Species ◽

Biogeographical Regions

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A global database on freshwater fish species occurrence in drainage basins

Scientific Data ◽

10.1038/sdata.2017.141 ◽

2017 ◽

Vol 4 (1) ◽

Cited By ~ 46

Author(s):

Pablo A. Tedesco ◽

Olivier Beauchard ◽

Rémy Bigorne ◽

Simon Blanchet ◽

Laëtitia Buisson ◽

...

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Drainage Basins ◽

Species Occurrence ◽

Global Database ◽

Freshwater Fish Species

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Effective reassessments of freshwater fish species: a case study in a Mediterranean peninsula

Hydrobiologia ◽

10.1007/s10750-021-04644-4 ◽

2021 ◽

Author(s):

Imanol Miqueleiz ◽

Rafael Miranda ◽

Arturo H. Ariño ◽

Tommaso Cancellario

Keyword(s):

Iberian Peninsula ◽

Freshwater Fish ◽

Fish Species ◽

Conservation Status ◽

Fish Fauna ◽

Iucn Red List ◽

Molecular Techniques ◽

Red Lists ◽

Freshwater Fish Species ◽

Freshwater Fish Fauna

AbstractIUCN Red List assessments for fish species can quickly become out of date. In recent years molecular techniques have added new ways of obtaining information about species distribution or populations. In this work, we propose the Iberian Peninsula as an example of reassessment needs in its endangered freshwater fish fauna. We compiled the list of freshwater fish species occurring in continental Spain and Portugal and examined their conservation status in global and national Red Lists. We retrieved records for these species in the Iberian Peninsula and calculated several biological indexes (richness and vulnerability indexes). Our results showed a patchy data coverage of fish records in the Iberian Peninsula. Threat levels reported within national Red Lists are higher than their global counterparts, reinforcing the necessity of improving and maintaining up to date national Red Lists. Iberian watersheds have moderate levels of threat and high levels of out of date assessments. The nearly fully completed genetic databases for Iberian fish species, along with the limited distribution of many endangered species and the necessity of update their assessments constitute an excellent opportunity to use data obtained from eDNA to improve species monitoring practices and their conservation status.

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Genetic differentiation through dispersal and isolation in two freshwater fish species from coastal basins of Northeastern Brazil

Neotropical Ichthyology ◽

10.1590/1982-0224-2019-0114 ◽

2020 ◽

Vol 18 (3) ◽

Author(s):

João Marcelo S. Abreu ◽

Brandon T. Waltz ◽

James S. Albert ◽

Nivaldo M. Piorski

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Sequence Data ◽

Fish Fauna ◽

Northeastern Brazil ◽

Molecular Sequence Data ◽

Molecular Sequence ◽

Freshwater Fish Species ◽

Sea Level Fluctuations ◽

Coastal Basins

Abstract The coastal basins in Northeastern Brazil used in this study make up two different ecoregions for freshwater fishes (Amazonas estuary and coastal drainages, and Parnaiba) and two areas of endemism for Characiformes (Maranhão and Parnaíba), and exhibits a diversified yet poorly explored freshwater fish fauna. The population structure and biogeography of two migratory freshwater fish species that are commercially exploited from Maranhão and Parnaíba regions were herein analyzed. Molecular sequence data and statistical analyses were used to estimate haplotypes networks and lineage divergence times and correlated with hydrographic history of drainage and paleodrainages of the region. A total of 171 sequences was produced for both species, Schizodon dissimilis (coI, n = 70) and Prochilodus lacustris (D-loop, n = 101). All analyses identified the presence of three genetically delimited groups of S. dissimilis and six groups of P. lacustris. The lineage time analyses indicate diversification among these species within the past 1 million year. The results indicate the influence of geodispersal in the formation of the ichthyofauna in the studied area through headwater stream capture events and reticulated connections between the mouths of rivers along the coastal plain due to eustatic sea level fluctuations.

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Critical thermal limits of Poecilia caucana (Steindachner, 1880) (Cyprinodontiformes: Poeciliidae)

Neotropical Ichthyology ◽

10.1590/1982-0224-20150171 ◽

2016 ◽

Vol 14 (1) ◽

Cited By ~ 2

Author(s):

Juan Diego Martínez ◽

Carlos Daniel Cadena ◽

Mauricio Torres

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Thermal Tolerance ◽

Freshwater Species ◽

Freshwater Fish Species ◽

Thermal Limits ◽

Similar Work ◽

Lack Of Information ◽

Critical Thermal Limits ◽

Critical Thermal Methodology

Abstract Although temperature has far-reaching effects on fish biology, the thermal tolerance ranges of most freshwater fish species are unknown. This lack of information precludes forecasting responses to climatic change and does not allow for comparative analyses that may inform evolutionary and biogeographic studies. We used the critical thermal methodology to quantify acclimation capacity and thermal tolerance in the Neotropical freshwater species Poecilia caucana . For fish acclimated to 20˚C, 25ºC, and 28ºC, critical thermal minima (CTmin) were 12.52 ± 0.62ºC, 13.41 ± 0.56ºC and 14.24 ± 0.43ºC respectively, and critical thermal maxima (CTmax) were 38.43 ± 0.64ºC, 40.28 ± 0.92ºC and 41.57 ± 0.27ºC, respectively. Both CTmin and CTmax changed with acclimation temperatures, indicating that P. caucana was effectively acclimatable. Relative to values reported for other freshwater fish species, the acclimation capacity of P. caucana for CTmin was low, but it was average for CTmax. The data, together with similar work in other species, can be used in analyses focusing on broad ecological and evolutionary questions.

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Landing centers and availability of fish species in fish markets of Mymensingh town

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v9i2.11046 ◽

2012 ◽

Vol 9 (2) ◽

pp. 311-318

Author(s):

KJ Chandra ◽

SS Basak ◽

M Hasan

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Penaeus Monodon ◽

Macrobrachium Rosenbergii ◽

Fish Fauna ◽

Marine Species ◽

External Source ◽

Catla Catla ◽

Freshwater Fish Species ◽

Euthynnus Affinis

An investigation was carried out on fish landing centers, fish markets and fish fauna of the Mymensingh town to overview the location of the fish landing/entering centers, the source of supply and availability of fisheries organisms in Mymensingh town. The investigation was conducted from October 2009 to September 2010 in sixteen landing centers and markets of Mymensingh town. Among a total of 122 species of fishes were available of which, 113 were finfish and 9 were shellfish. Out of 113 finfish, 85 were freshwater fish species, 14 were exotic species, 14 were marine species, 7 were prawn /shrimps and 2 were mud crab and tortoise. Different types of freshwater fish, marine fish, crustacean and dry fish were found in Mymensingh town. The most abundant freshwater fish species were Catla catla, Labeo rohita, Clarias batrachus, Cirrhinus cirrhosus, Channa punctatus. Among the marine fishes Lates calcarifer, Euthynnus affinis and Mugil cephalus were recorded. The shellfishes, Macrobrachium rosenbergii and Penaeus monodon were most abundant. Significant amount of carps were imported from inside and outside of the districts. Besides the carps, small quantities of other fish, e.g, hilsha, catfish, tilapia, small indigenous fish, prawn and shrimp and other fish including marine can be seen in the fish landing centers and fish markets in Mymensingh town. Trains, buses, trucks and pickups were used as transport of fish to the landing centers from outside of Mymensingh town. Virtually most of the fish (84.6 %) were brought from different areas of the district and adjacent district like Netrokona, Jamalpur, Gazipur and Kishoreganj. The rest (15.4 %) were brought from external source in Mechhua bazar, Natun bazar, Sankipara bazar, Charpara bazar and Kathgola bazar. Main source of the fishes were different ponds, haors, beels and rivers of Mymensingh and adjacent districts. DOI: http://dx.doi.org/10.3329/jbau.v9i2.11046 ]J. Bangladesh Agril. Univ. 9(2): 311318, 2011

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Genetic diversity and structure of one of the most endangered freshwater fish species in Mexico: Tlaloc hildebrandi (Miller, 1950) and recognition of its evolutionarily significant units

PeerJ ◽

10.7717/peerj.11952 ◽

2021 ◽

Vol 9 ◽

pp. e11952

Author(s):

Rosa G. Beltrán-López ◽

Alfonso A. González-Díaz ◽

Miriam Soria-Barreto ◽

Marco Antonio Garduño-Sánchez ◽

Carmela Xochitla-Castrejón ◽

...

Keyword(s):

Genetic Diversity ◽

Freshwater Fish ◽

Fish Species ◽

Ex Situ ◽

Freshwater Species ◽

Freshwater Fish Species ◽

Evolutionarily Significant Units ◽

Las Casas ◽

Genetic Diversity And Structure ◽

Genetic Clusters

The endangered Chiapas killifish Tlaloc hildebrandi is an endemic freshwater species that lives in four subbasins of the Grijalva and Usumacinta basins, and one of the most geographically restricted species of the Produndulidae family. The species was originally described as endemic to springs in the high limestone plateau in San Cristóbal de Las Casas in the Río Amarillo subbasin (upper Grijalva basin). However, it was recently recorded in the Jataté and Tzaconejá subbasins in the upper Usumacinta basin, thereby expanding its known distribution range. The discovery of these populations is relevant not only for the conservation of the species but also for a better understanding of its evolutionary history. Currently, the scarce populations of T. hildebrandi, found in only a few localities in the Grijalva and Usumacinta basins, are fragmented and living under unfavorable conditions. Here, we analyzed three mitochondrial (mt-atp8&6 and mt-nd2) and one nuclear (nuc-s7) marker in order to assess the genetic diversity and population structure of T. hildebrandi. We found that, in comparison with other endangered freshwater fish species from Mexico, T. hildebrandi showed a lower level of genetic diversity (mt-nd2: h = 0.469, π = 0.0009; mt-atp8&6: h = 0.398, π = 0.001; and nuc-S7: h = 0.433, π = 0.001). Moreover, the analyzed populations exhibited a strong genetic structure in accordance with their geographic distribution, and can be placed into three genetic clusters: (1) Amarillo plus Chenhaló in the upper Grijalva basin, (2) Jataté, and (3) Tzaconejá, both in the upper Usumacinta basin. On the basis of our results, we propose the recognition of at least three evolutionarily significant units (ESUs) for the species and the urgent implementation of ex situ and in situ conservation and management efforts that consider the genetic background of the species.

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