scholarly journals Genetic landscape clustering of a large DNA barcoding dataset reveals shared patterns of genetic divergence among freshwater fishes of the Maroni Basin

2020 ◽  
Author(s):  
Yvan Papa ◽  
Pierre Yves Le Bail ◽  
Raphael Covain
Keyword(s):  
Freshwater Fish ◽  
Dna Barcoding ◽  
Fish Species ◽  
Genetic Divergence ◽  
River Mouth ◽  
Freshwater Fishes ◽  
Morphological Identification ◽  
The North ◽  
The Status ◽  
Genetic Landscape

The Maroni is one of the most speciose basins of the Guianas and hosts a megadiverse freshwater fish community. Although taxonomical references exist for both the Surinamese and Guyanese parts of the basin, these lists were mainly based on morphological identification and there are still taxonomical uncertainties concerning the status of several fish species. Here we present a barcode dataset of 1,284 COI sequences from 199 freshwater fish species (68.86% of the total number of strictly freshwater fishes from the basin) from 124 genera, 36 families, and 8 orders. DNA barcoding allowed for fast and efficient identification of all specimens studied as well as unveiling a consequent cryptic diversity, with the detection of 20 putative cryptic species and 5 species flagged for re-identification. In order to explore global genetic patterns across the basin, genetic divergence landscapes were computed for 128 species, showing a global trend of high genetic divergence between the Surinamese south-west (Tapanahony and Paloemeu), the Guianese south-east (Marouini, Litany, Tampok, Lawa…), and the river mouth in the north. This could be explained either by lower levels of connectivity between these three main parts or by the exchange of individuals with the surrounding basins. A new method of ordination of genetic landscapes successfully assigned species into cluster groups based on their respective pattern of genetic divergence across the Maroni Basin: genetically homogenous species across the basin were effectively discriminated from species showing high spatial genetic fragmentation and possible lower capacity for dispersal.

scholarly journals Genetic landscape clustering of a large DNA barcoding dataset reveals shared patterns of genetic divergence among freshwater fishes of the Maroni Basin

2020 ◽  
Author(s):  
Yvan Papa ◽  
Pierre Yves Le Bail ◽  
Raphael Covain
Keyword(s):  
Freshwater Fish ◽  
Dna Barcoding ◽  
Fish Species ◽  
Genetic Divergence ◽  
River Mouth ◽  
Freshwater Fishes ◽  
Morphological Identification ◽  
The North ◽  
The Status ◽  
Genetic Landscape

The Maroni is one of the most speciose basins of the Guianas and hosts a megadiverse freshwater fish community. Although taxonomical references exist for both the Surinamese and Guyanese parts of the basin, these lists were mainly based on morphological identification and there are still taxonomical uncertainties concerning the status of several fish species. Here we present a barcode dataset of 1,284 COI sequences from 199 freshwater fish species (68.86% of the total number of strictly freshwater fishes from the basin) from 124 genera, 36 families, and 8 orders. DNA barcoding allowed for fast and efficient identification of all specimens studied as well as unveiling a consequent cryptic diversity, with the detection of 20 putative cryptic species and 5 species flagged for re-identification. In order to explore global genetic patterns across the basin, genetic divergence landscapes were computed for 128 species, showing a global trend of high genetic divergence between the Surinamese south-west (Tapanahony and Paloemeu), the Guianese south-east (Marouini, Litany, Tampok, Lawa…), and the river mouth in the north. This could be explained either by lower levels of connectivity between these three main parts or by the exchange of individuals with the surrounding basins. A new method of ordination of genetic landscapes successfully assigned species into cluster groups based on their respective pattern of genetic divergence across the Maroni Basin: genetically homogenous species across the basin were effectively discriminated from species showing high spatial genetic fragmentation and possible lower capacity for dispersal.

scholarly journals Swirling currents emerge at the Waiapu river mouth: Lens-based witnessing, documenting and storytelling of slow catastrophes

2021 ◽  
Vol 2 (1) ◽  
pp. 6.1-6.16
Author(s):  
Natalie Robertson
Keyword(s):  
Fish Species ◽  
River Mouth ◽  
First Century ◽  
Ecological Knowledge ◽  
Moving Image ◽  
River Catchment ◽  
The North ◽  
Aotearoa New Zealand ◽  
Introduced Pest ◽  
Waiapu River

This article considers how Indigenous stories and chants can tell us about our ecologies in the time of environmental emergencies. For Ngāti Porou of the lower reaches of the Waiapu river catchment in Te Ika-a-Māui, the North Island of Aotearoa (New Zealand), the slow catastrophes of twentieth-century colonial deforestation impacts, introduced pest-induced inland forest collapse and predicted twenty-first-century climate change sea level rise have converged as our most pressing environmental problems. Waiapu is home to Ngāti Porou Tūturu, coastal fishing people who value their relationships with fish species, notably kahawai. The mōteatea chant form acts as a guide to my photographic and moving image practice to visualize and voice the slow catastrophe of the river. In this article, I discuss how the Ngāti Porou mōteatea He Tangi mo Pāhoe, which reveals nineteenth-century ecological knowledge, particularly of fish species, is reimagined as a moving image visual mōteatea. Through reframing the threats as the current faces of our ancestors, this article proposes a shift in thinking from vulnerability into resilience.

scholarly journals A review of length-weight relationships of freshwater fishes in Malaysia

2018 ◽  
Vol 20 (1) ◽  
pp. 55-68 ◽  
Author(s):  
Amonodin Mohamad Radhi ◽  
Mohd-Fadzil Nurul Fazlinda ◽  
Mohammad Noor Azmai Amal ◽  
Hashim Rohasliney
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Environmental Changes ◽  
Meta Analysis ◽  
Freshwater Fishes ◽  
Clarias Batrachus ◽  
Ecological Health ◽  
Allometric Growth ◽  
Freshwater Fish Species

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.

scholarly journals Freshwater Fish Species of the Oorlogskloof River, Northern Cape Province, South Africa

Our Nature ◽  
2013 ◽  
Vol 10 (1) ◽  
pp. 8-16
Author(s):  
P.P. Ramollo ◽  
M. Schumann ◽  
W.A.J. Pretorius
Keyword(s):  
South Africa ◽  
Freshwater Fish ◽  
Relative Abundance ◽  
Fish Species ◽  
Freshwater Fishes ◽  
Endangered Fish ◽  
Freshwater Fish Species ◽  
Northern Cape

The freshwater fish of Oorlogskloof River were sampled in March 2010. The study aimed to determine the distribution and relative abundance of freshwater fish in the Oorlogskloof River. A total of 4643individuals represented by five fish species belonging to two families were sampled. The Barbus anoplus was only sampled in the upper reaches of the Oorlogskloof River gorge while endangered Labeobarbus capensis appeared downstream in the Oorlogskloof River. Barbus serra dominated the fish species in the system. The invasion of Tilapia sparmanni in this system was confirmed during the survey andthe species appeared to be widespread throughout the system. At this stage it does not appear to be posing a serious threat to the endangered fish species. The Oorlogskloof River can be considered as a potential refuge site for the conservation of some endemic and threatened freshwater fishes of South Africa.DOI: http://dx.doi.org/10.3126/on.v10i1.7746

On the infracommunity structure of adult cestodes in freshwater fishes

Parasitology ◽  
1990 ◽  
Vol 101 (2) ◽  
pp. 257-264 ◽  
Author(s):  
K. I. Andersen ◽  
E. T. Valtonen
Keyword(s):  
Community Structure ◽  
Freshwater Fish ◽  
Fish Species ◽  
Fish Communities ◽  
Freshwater Fishes ◽  
Host Population ◽  
Fish Host ◽  
Evolutionary Explanation ◽  
Cestode Species ◽  
Bothnian Bay

The distribution–co-occurrence and exchange of adult cestode species in two fish communities (the Bothnian Bay and Lake Yli-Kitka both in Finland) was studied. Coexistence of two or more mature cestode species in the same fish host population was zero for all fish species studied (33) except pike in the Bothnian Bay and whitefish in the lake. It was found that 60% of the fish species studied in the Bothnian Bay and 80% of the fish species studied from Lake Yli-Kitka harboured only 1 mature cestode species. Exchange of adult cestode species between the different fish species in these two fish communities was found to be as rare as coexistence. The infra-community structure of adult cestodes in freshwater fish thus turned out to be markedly different from what is known to be the situation in birds. The evolutionary explanation behind the differences is discussed.

Taxonomic challenges in freshwater fishes: a mismatch between morphology and DNA barcoding in fish of the north-eastern part of the Congo basin

2015 ◽  
Vol 16 (1) ◽  
pp. 342-352 ◽  
Author(s):  
Eva Decru ◽  
Tuur Moelants ◽  
Koen De Gelas ◽  
Emmanuel Vreven ◽  
Erik Verheyen ◽  
...  
Keyword(s):  
Dna Barcoding ◽  
Freshwater Fishes ◽  
Congo Basin ◽  
The North ◽  
North Eastern ◽  
North Eastern Part

Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns 

Zootaxa ◽  
2019 ◽  
Vol 4567 (3) ◽  
pp. 515 ◽  
Author(s):  
CASEY KEAT CHUAN NG ◽  
TEOW YEONG LIM ◽  
AMIRRUDIN B. AHMAD ◽  
MD ZAIN KHAIRONIZAM
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Field Data ◽  
Freshwater Fishes ◽  
Fish Diversity

This study investigates the published literature and incorporates our field data from 1997 to September 2018 to generate an inventory report of primary freshwater fishes for Perak State in Malaysia. We critically examined and enumerated 186 species from 2 classes, 16 orders, 43 families and 114 genera in 57 localities. A total of 173 fish species (91.4%) are native to Perak and 17 species (8.6%) are non-native. The provisional checklist presented herein is conservative and excludes doubtful inventory records that lack synthesis and traceability. We encountered seven taxonomic discrepancies and we also could not confidently identify eight species. These are explicitly discussed to inform future workers. 

Sign in / Sign up

Export Citation Format

Share Document