Rare and Endangered Fish Species in the Adriatic Sea

2021 ◽  
Author(s):  
Ana Pešić ◽  
Zdravko Ikica ◽  
Mirko Đurović ◽  
Jovana Tomanić ◽  
Stefan Ralević
Keyword(s):  
Fish Species ◽  
Adriatic Sea ◽  
Endangered Fish ◽  
Rare And Endangered

scholarly journals Fish composition in Dong Nai biosphere reserve in Vietnam

2019 ◽  
Vol 18 (06) ◽  
pp. 30-37
Author(s):  
Tam T. Nguyen
Keyword(s):  
Fish Species ◽  
Bird Species ◽  
Fish Fauna ◽  
Biosphere Reserve ◽  
Sampling Period ◽  
Red List ◽  
Amphibian Species ◽  
Endangered Fish ◽  
Rare And Endangered ◽  
High Level

Dong Nai biosphere reserve (DNBR) is well known for its high level of biodiversity and of global meaningful ecosystem. The fauna includes 84 species of mammals belonging to 28 families, 10 orders; 407 bird species; 141 reptile and amphibian species; 175 fish species; 2,017 insect species. The fish fauna of DNBR maintains many rare and endangered fish species recorded in the Vietnam red book and international union for conservation of nature red list (IUCN's red list) such as Scleropages formosus and many other rare fish species, such as Morulius chrysophekadion, Chitala ornata, Probarbus jullieni, Cyclocheilichthys enoplos… This study was aimed to identify fish composition distributed in DNBR. After the sampling period (01/2019 to 08/2019), a total of 114 fish species belonging to 11 orders and 28 families were recorded in DNBR. There were 09 species of fish on the list of rare and endangered fish species of Ministry of Agriculture and Rural Development of Vietnam, 3 species (Chitala ornata, Cosmochilus harmandi and Hemibagus filamentus) on the Vietnam red list book; 01 species (Ompok bimaculatus) on the IUCN's red list, 11 exotic species, 78 commercial species and 13 species having potential as aquarium fish. In addition, the study also found the first presence of a species of phallostethid, Phenacostethus smithi in DNBR

scholarly journals MODERN STATUS AND PROSPECTS OF ARTIFICIAL BREEDING OF RARE, EXTINCTING FISH SPECIES FOR CONSERVATION OF BIODIVERSITY AND RESTORATION OF ABUNDANCE IN NATURAL WATER RESERVES OF THE ILE-BALKHASH BASIN

2019 ◽  
pp. 17-30
Author(s):  
Maral Aydynkyzy Zhaparova ◽  
Saule Zhangirovna Asylbekova ◽  
Damir Kayirkeldyevich Zharkenov ◽  
Kuanysh Baibulatovich Isbekov ◽  
Vyacheslav Nickolaevich Tsoy
Keyword(s):  
Fish Species ◽  
Large Scale ◽  
Irrigation System ◽  
Food Competition ◽  
Artificial Reproduction ◽  
Commercial Fish ◽  
Endangered Fish ◽  
The Status ◽  
Acipenser Nudiventris ◽  
Rare And Endangered

This article presents materials on the current state of the native ichthyofauna of the Ile-Balkhash basin, affected by large-scale acclimatization works. Four species of the ichthyofauna composition are listed in the Red Book of Kazakhstan: spike ( Acipenser nudiventris Lovetsky, 1828), Aral barbel ( Barbus brachycephalus brachycephalus Kessler, 1872), Balkhash marinka ( Schizothorax argentatus argentatus Kessler, 1874), Balkhash perch ( Perca schrenkii Kessler, 1874). Due to the ineffectiveness of fish conservation measures, including the prohibition for catching of these fish species, which are not found anywhere except in the Ile-Balkhash basin, it is necessary to impose artificial reproduction, changes in the Fishery Rules and organization of commercial rearing. The work is based on research materials of 2001-2018 conducted in Lake Balkhash, the delta and the lower reaches of the Ile and the Tokraun. The status of spike populations ( Acipenser nudiventris Lovetsky, 1828), Aral barbel ( Barbus brachycephalus brachycephalus Kessler, 1872), Balkhash marinka ( Schizothorax argentatus argentatus Kessler, 1874) and Balkhash perch ( Perca schrenkii Kessler, 1874). The main reasons preventing the maintenance of a high number of endangered species have been established: small area of natural spawning grounds, death of fry in linmeshing fishing gear, large-scale poaching (spike); deterioration of conditions for the natural reproduction, mass mortality of young fishes in the irrigation system (Aral barbel); total elimination and food competition with pike perch (Balkhash marinka, Balkhash perch). The prospects for preservation of rare and endangered fish species have been considered, recommendations for breeding and replenishing populations of species listed in the Red Book have been given: measures for artificial reproduction and prevention of juvenile death, creating favorable conditions for fattening and reducing the pressure of trophic competition. Without taking adequate measures for reducing the anthropogenic impact on natural resources, including ichthyofauna, the number of main commercial fish species will decrease, rare species of fish will die out.

A new look on the morphometric characteristics of Congridae leptocephali from the southern Adriatic Sea

2021 ◽  
pp. 1-5
Author(s):  
M. Mandić ◽  
I. Leonori ◽  
A. De Felice ◽  
S. Gvozdenović ◽  
A. Pešić
Keyword(s):  
Fish Species ◽  
Adriatic Sea ◽  
Pelagic Fish ◽  
Morphometric Parameters ◽  
Morphological Features ◽  
Morphometric Characteristics ◽  
Small Pelagic Fish ◽  
Acoustic Surveys ◽  
Western Side ◽  
Conger Conger

Abstract Anguillid leptocephali of three Congridae species (Conger conger, Ariosoma balearicum and Gnathophis mistax) were caught as bycatch of pelagic trawls during acoustic surveys targeting small pelagic fish species in the southern Adriatic Sea, carried out under the framework of the Italian MEDIAS project (western side) and its extension in the ambit of the FAO AdriaMed project (eastern side). Results refer to the findings of Congridae leptocephali during surveys conducted in 2011, 2014, 2015 and 2016. A total of 25 specimens were caught and analysed (morphological features and pigmentation patterns). Leptocephali of Conger conger were found in the range of 8.4–13.1 cm total length (TL) (between 50 and 132 m depth), Ariosoma balearicum from 9.7–12.2 cm TL (between 50 and 128 m depth) and for Gnathophis mystax in the range from 6.4–11.7 cm TL (between 40 and 79 m depth). The results indicate that the southern Adriatic Pit could be the spawning area of these species in the Adriatic Sea. Present data represent a contribution to existing knowledge about the ecology of leptocephali from the Congridae family in the southern Adriatic Sea, and also indicate the existence of differences in morphometric parameters between different areas, that is, the possibility of the existence of new geographic lines within the genus Ariosoma in the Adriatic Sea.

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

River basin-related genetic structuring in an endangered fish species, Chondrostoma lusitanicum, based on mtDNA sequencing and RFLP analysis

Heredity ◽  
2001 ◽  
Vol 86 (3) ◽  
pp. 253-264 ◽  
Author(s):  
Natacha Mesquita ◽  
Gary Carvalho ◽  
Paul Shaw ◽  
Eduardo Crespo ◽  
Maria Manuela Coelho
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Rflp Analysis ◽  
Genetic Structuring ◽  
Endangered Fish

Changes in reproductive biomarkers in an endangered fish species (bonytail chub, Gila elegans) exposed to low levels of organic wastewater compounds in a controlled experiment

2009 ◽  
Vol 95 (2) ◽  
pp. 133-143 ◽  
Author(s):  
David B. Walker ◽  
Nicholas V. Paretti ◽  
Gail Cordy ◽  
Timothy S. Gross ◽  
Steven D. Zaugg ◽  
...  
Keyword(s):  
Fish Species ◽  
Controlled Experiment ◽  
Endangered Fish ◽  
Low Levels ◽  
Organic Wastewater

scholarly journals Prompt assessment of the potential spawning areas of Sevan trout in the South-West part of Lake Sevan

2017 ◽  
Vol 18 (1) ◽  
pp. 222-232 ◽  
Author(s):  
V. L. Asatryan ◽  
N. E. Barseghyan ◽  
M. R. Dallakyan ◽  
T. V. Vardanyan
Keyword(s):  
Fish Species ◽  
The South ◽  
Time Saving ◽  
Lake Sevan ◽  
Endangered Fish ◽  
Critically Endangered Species ◽  
South West ◽  
Natural Reproduction ◽  
Spawning Areas ◽  
West Part

Abstract Sevan trout is an endemic fish species, registered in the Red Data Book of Armenian Animals as a ‘Critically Endangered’ species (IUCN category: CR A2cd) and is one of the most valuable fish of the Armenian ichthyofauna. For the purpose of preservation of this endangered fish species, rivers in the South-West part of Lake Sevan have been studied and their potential for spawning has been assessed through a relatively ‘cheap’ and ‘time-saving’ approach developed on the basis of hydrophysical, hydrochemical and hydrobiological studies. The results have shown that the highest potential to support natural reproduction of Sevan trout is in the middlestream part of Lichq river, as well as in the downstream part of Bakhtak river and the part of Bakhtak-Tsakqar system near the connection of the Bakhtak and Tsakqar rivers; however, all these areas need some remediation to achieve ‘high potential’.

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