scholarly journals Patterns of ichthyofaunal diversity and distribution across Jebba Hydro-Electric Power (HEP) dam, Jebba, north-central Nigeria

2020 ◽  
Author(s):  
S. O. Oladipo ◽  
L. M. Nneji ◽  
O. A. Iyiola ◽  
I. C. Nneji ◽  
A. O. Ayoola ◽  
...  
Keyword(s):  
Sampling Period ◽  
Freshwater Fishes ◽  
Fish Diversity ◽  
Hydroelectric Power ◽  
North Central ◽  
Gill Net ◽  
Unidentified Species ◽  
High Species Richness ◽  
Downstream Section ◽  
Taxonomic Approach

Abstract The ichthyofauna diversity of the Jebba Hydroelectric Power (HEP) Dam, Jebba, North-central Nigeria was studied. Fishes were sampled for 24 months using gill net, hook and line, and cast net. Individuals were identified using morphological and molecular (mitochondrial Cytochrome c Oxidase subunit I) data. A total of 9605 freshwater fishes were recorded during the sampling period. The use of an integrative taxonomic approach enabled the identification of 83 species belonging to 42 genera. Additionally, the study recorded three unidentified species – Ctenopoma sp, Malapterurus sp., and Protopterus sp. Analyses showed that individuals belonging to families Cichlidae and Mochokidae dominated the dam. The diversity analyses revealed relatively high fish diversity during the rainy season at the downstream section of Jebba HEP dam compared to the upstream section. The study, therefore, showed the presence of a diverse fish community comprising high species richness and diversity across the Jebba HEP dam. Finally, we recommend proper biodiversity monitoring and assessment of freshwater fish diversity across Nigeria. In addition, the use of an integrated taxonomic approach is recommended for appropriate species’ identification and studies of freshwater fishes from Nigeria.

Update on the distribution of the co-invasiveSchyzocotyle acheilognathi(=Bothriocephalus acheilognathi), the Asian fish tapeworm, in freshwater fishes of Mexico

2017 ◽  
Vol 92 (3) ◽  
pp. 279-290 ◽  
Author(s):  
G. Pérez-Ponce de León ◽  
O. Lagunas-Calvo ◽  
L. García-Prieto ◽  
R. Briosio-Aguilar ◽  
R. Aguilar-Aguilar
Keyword(s):  
Invasive Species ◽  
Freshwater Fish ◽  
Geographical Origin ◽  
Freshwater Fishes ◽  
Ctenopharyngodon Idella ◽  
Aquatic Environments ◽  
North Central ◽  
The Past ◽  
Bothriocephalus Acheilognathi ◽  
High Species Richness

AbstractThe Asian fish tapeworm,Schyzocotyle acheilognathi(syn.Bothriocephalus acheilognathi) represents a threat to freshwater fish, mainly cyprinids, across the globe. This tapeworm possesses an extraordinary ability to adapt to different environmental conditions and, because of that, from its natural geographical origin in mainland Asia, it has colonized every continent except Antarctica. It is thought that this pathogenic tapeworm was first co-introduced into Mexico in 1965 from China, with the grass carpCtenopharyngodon idella, although the first formal record of its presence was published in 1981. Over the past 35 years, the Asian fish tapeworm has invaded about 22% of the freshwater fish in Mexico. Because fish communities in Mexico are characterized by high species richness and levels of endemism,S. acheilognathiis considered as a co-introduced and co-invasive species. In this review, we update the geographic distribution and host spectrum of the Asian fish tapeworm in Mexico. Up until December 2016, the tapeworm had been recorded in 110 freshwater fish species (96 native and 14 introduced), included in 51 genera, 11 families and 4 orders; it was also widely distributed in all types of aquatic environments, and has been found in 214 localities. We present novel data from a survey aimed at establishing the distribution pattern of the tapeworm in native freshwater fishes of two rivers in north-central Mexico, and the genetic variation among individuals of this co-invasive species collected from different host species and localities. We discuss briefly the factors that have determined the remarkable invasive success of this parasite in freshwater systems in Mexico.

scholarly journals Molecular assessment of native fish diversity in UNESCO heritage site, Tasik Raban, using DNA barcoding

2021 ◽  
Vol 4 ◽  
Author(s):  
Ramizah Abdull Rahman ◽  
Nurul Fizatul Nabilah Osman ◽  
Adibah Abu Bakar ◽  
Syazwan Saidin ◽  
Intan Faraha Abdul Ghani ◽  
...  
Keyword(s):  
Native Species ◽  
Dna Barcode ◽  
Diversity Management ◽  
Freshwater Fishes ◽  
Animal Protein ◽  
Fish Diversity ◽  
Freshwater Species ◽  
Heritage Site ◽  
Online Databases ◽  
The World

Freshwater species are the most threatened group to be assessed to date by the IUCN. Freshwater fish has enormous importance as animal protein supplies for human, and it is estimated that 6% of the world annual animal protein supplies come from freshwater fishes. Barcoding projects have been initiated all over the world and the field is constantly growing. In Malaysia however, the field has not been deeply investigated and not many barcoding projects have been undertaken especially for freshwater fishes. The aim of our study is to support the progress of DNA barcode project, especially for inland reservoirs like Tasik Raban, Perak. A Standard methodology using Cytochrome c oxidase subunit 1 (COI) marker was developed to ensure native fishes are barcoded taxonomically and molecularly and ready to be accessed through online databases. Such public references can help increase awareness on local fish diversity management. Information on taxonomy and molecular characterization can be used to plan further conservation programmed especially for depleted, unrecognized, and cryptic native species.

scholarly journals Squamate reptiles from Mauá Hydroelectric Power Plant, state of Paraná, southern Brazil

Check List ◽  
2015 ◽  
Vol 11 (6) ◽  
pp. 1800
Author(s):  
Gilberto Alves de Souza Filho ◽  
Fernanda Stender de Oliveira
Keyword(s):  
Power Plant ◽  
Hydroelectric Power Plant ◽  
The State ◽  
Hydroelectric Power ◽  
Southern Brazil ◽  
North Central ◽  
Squamate Reptiles ◽  
East Region ◽  
New Knowledge ◽  
Central South

The reptile fauna of some localities in Paraná is still poorly known. Most surveys were conducted in the central-north, central-south, and eastern regions of the state. Herein, we present a list of squamate reptiles from the Mauá Hydroelectric Power Plant along the Tibagi River, in the central-east region of Paraná. Samplings occurred from March 2010 to April 2015. We recorded 34 species: 24 snakes, eight lizards, and two amphisbaenians. Our work adds new knowledge about the reptilian fauna of the central-east region of Paraná.

scholarly journals Influence of habitat connectivity and seasonality on the ichthyofauna structure of a riverine knickzone

2018 ◽  
Vol 108 (0) ◽  
Author(s):  
Eduardo M. Brambilla ◽  
Virginia S. Uieda ◽  
Marcos G. Nogueira
Keyword(s):  
Rainy Season ◽  
Power Plants ◽  
High Water ◽  
Abundant Species ◽  
Fish Diversity ◽  
Hydroelectric Power ◽  
Two Factors ◽  
Dry Conditions ◽  
Flood Pulses ◽  
Imminent Threat

ABSTRACT Knickzones are originated from basaltic outcroppings, present runs, riffles and pools and are highly influenced by flood pulses, which maintain their natural dynamic. However, the construction of hydroelectric power plants alters or eliminate the dynamism of this area and can affect the resident fauna that may be dependent on it. The aim of this study was to evaluate the organization of a knickzone’s ichthyofauna considering the influence of seasonality and connectivity of habitats. The study was performed in a knickzone located in the Sapucaí-Mirim River, Southeast Brazil. We sampled four rocky pools connected to the river and three isolated pools, during rainy and dry conditions. The analysis of the two factors (connectivity and seasonality) and of their interaction showed a significant influence only for seasonality on ichthyofauna structure, with higher values of abundance in the rainy season. The species that most contributed to the high dissimilarity between seasons were Knodus moenkhausii (50% of contribution) and Astyanax bockmanni (21%). The former is the most abundant species in the rainy season and the later in the dry season. The alteration between low and high water level occurs frequently in knickzones, as it is a rocky shallow platform in the middle of a river, with floods occurring seasonally or in stochastic short-term periods. This hydrological seasonal dynamic, high limnological variability and complex interactions of different habitats (pools, runs and rapids) explain the particular ichthyofauna structure in such small area. Our results also indicate the potential importance of basaltic knickzones for regional fish diversity conservation, especially due to the imminent threat by intensive hydropower reservoir construction.

Inventory of the freshwater fishes from a densely collected area in South America—a case study of the current knowledge of Neotropical fish diversity

Zootaxa ◽  
2016 ◽  
Vol 4138 (3) ◽  
pp. 401 ◽  
Author(s):  
VINICIUS A. BERTACO ◽  
JULIANO FERRER ◽  
FERNANDO R. CARVALHO ◽  
LUIZ R. MALABARBA
Keyword(s):  
South America ◽  
Current Knowledge ◽  
Freshwater Fishes ◽  
Fish Diversity ◽  
Neotropical Fish

scholarly journals Freshwater fish diversity in three tributary streams in Serayu Basin, Central Java, Indonesia

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Suhestri Suryaningsih ◽  
Dian Bhagawati ◽  
Sri Sukmaningrum ◽  
Sugiharto Sugiharto ◽  
Ayu ratna I gusti agung
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Fish Diversity ◽  
Random Group ◽  
Freshwater Fish Species ◽  
Central Java ◽  
Gill Net ◽  
Southern Central ◽  
Temporal And Spatial ◽  
Fish Species Diversity

Abstract. Suryaningsih S, Bhagawati D, Sukmaningrum S, Sugiharto, Puspitasari IGAAR. 2020. Freshwater fish diversity in three tributary streams in Serayu Basin, Central Java, Indonesia. Biodiversitas 21: 5811-5817. Determining the diversity of freshwater fish species in Central Java, Indonesia has been confounded by temporal and spatial limitations in past studies. The Serayu Basin is a large watershed in Central Java that is believed to have high freshwater fish diversity. We aimed to determine the diversity and community structure of freshwater fish species in three tributaries of the Serayu, elucidate the factors influencing this diversity, and determine the extent to which these tributaries contribute to the total freshwater fish species richness for southwest Central Java. We conducted gill net sampling from May to August 2018 on the Tulis, Mrawu, and Kali Sapi Rivers located at Banjanegara district Sampling followed a random group technique in upstream, midstream, and downstream river sections of each tributary. In total, we observed 21 freshwater fish species. Broadly, fish species diversity was relatively low in the study area, and water temperature and dissolved oxygen were important in maintaining fish diversity. These three tributaries house 27–46% of the freshwater fish species reported for southern Central Java.

A new species of Loricaria (Siluriformes: Loricariidae) from the Turiaçu River basin, Eastern Amazon region, Brazil

Zootaxa ◽  
2021 ◽  
Vol 4915 (3) ◽  
pp. 424-434
Author(s):  
ANANDA CAROLINA S. SARAIVA ◽  
JOÃO MARCELO S. ABREU ◽  
FELIPE POLIVANOV OTTONI ◽  
NIVALDO MAGALHÃES PIORSKI
Keyword(s):  
New Species ◽  
Freshwater Fish ◽  
River Basin ◽  
Standard Length ◽  
Freshwater Fishes ◽  
Amazon Region ◽  
Fish Diversity ◽  
Pectoral Girdle ◽  
Median Region ◽  
A New Species

A new species of Loricaria is herein described from the Turiaçu River basin, Eastern Amazon region, Maranhão state, Brazil, within the Maranhão Hydrological Unit (MHU). Loricaria turi differs from its congeners mainly by the following combination of characters: abdominal plate development confined to the posterior median region, pectoral girdle mostly naked, with cluster of plates near pectoral fin bases; large eyes (minimum orbital diameter 16.2–20.7% of HL and maximum orbital diameter 19.8–24.0% of HL), 214.4 mm of maximum standard length, and large basicaudal plate (16.6–29.2% of HL). The description of this new species strengthens the hypothesis that the Maranhão Hydrological Unit (MHU) is a possible area of endemism for freshwater fishes and contributes to the knowledge of the freshwater fish diversity and composition of the region. 

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. 

Size Selectivity of Passive Fishing Gear: A Correction for Encounter Probability Applied to Gill Nets

1984 ◽  
Vol 41 (8) ◽  
pp. 1252-1255 ◽  
Author(s):  
Lars G. Rudstam ◽  
John J. Magnuson ◽  
William M. Tonn
Keyword(s):  
Swimming Speed ◽  
Sampling Period ◽  
Fishing Gear ◽  
Size Selectivity ◽  
Fish Size ◽  
Encounter Probability ◽  
Power Corrections ◽  
Gill Net ◽  
Coregonus Artedii ◽  
Coregonus Hoyi

The probability of catching a fish in a gill net may be separated into two components: (1) the probability of the fish encountering the net and (2) the probability of the fish being caught and retained in the net. We consider the probability of encounter to be directly proportional to the distance travelled by the fish during the sampling period. This distance will increase with fish size if different-sized fish swim for the same amount of time because swimming speed increases with fish size. Routine swimming speed measured in the laboratory for three size-classes of bloater (Coregonus hoyi) increased with length to the 0.8 power. Corrections for encounter probability were incorporated in gill net selectivity calculations for samples of cisco (Coregonus artedii), a species closely related to bloater. These corrections can significantly increase the proportional estimates of smaller relative to larger animals in the estimated population structure. The approach should also be applicable to other passive fishing gear, such as longlines and set nets.

scholarly journals Checklist of freshwater fishes from Loreto, Peru

2021 ◽  
Vol 28 (especial) ◽  
pp. e21911
Author(s):  
Vanessa Meza-Vargas ◽  
Dario R. Faustino-Fuster ◽  
Junior Chuctaya ◽  
Max Hidalgo ◽  
Hernán Ortega Torres
Keyword(s):  
Environmental Management ◽  
Decision Making ◽  
Freshwater Fishes ◽  
Fish Diversity ◽  
Extensive Review ◽  
Management Actions ◽  
Extensive Region ◽  
Scientific Collections ◽  
Iucn Criteria ◽  
Occurrence Records

This study presents an extensive review of published and unpublished occurrence records of fish species in the Loreto department. Located in the northeast of the country, Loreto is the most geographically extensive region in the Peruvian territory. Despite the increase in fish collections in Loreto in recent years, the ichthyofauna of this department needs to be more documented. Based on a database of scientific collections and bibliographic information, an updated checklist of the freshwater fishes from Loreto is presented. The results reveal a rich and diversified ichthyofauna, with 873 species distributed in 331 genera, 50 families and 15 orders. The main groups are Characiformes (42.6%), Siluriformes (34.8%), Gymnotiformes (8.6%) and Cichliformes (7.4%). Part of the ichthyofauna has restricted distribution for Loreto (4.7%). In addition, 9.0% of species from Loreto are used in fisheries. Meanwhile, 219 species (25%) were categorized according to the IUCN criteria where only six species (0.7%) are currently considered threatened species (CR, EN or VU). The results presented in this work indicate that this department needs more studies to know the biodiversity of fish, likewise, the information presented constitutes a contribution to the knowledge of fish diversity that would support environmental management actions and decision-making aimed at conserving one of the most diverse departments of Peru.

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