scholarly journals Alien fish, amphibian and reptile species in Romania and their invasive status: a review with new data

2021 ◽  
Vol 64 (1) ◽  
pp. 131-186
Author(s):  
Alexandru Iftime ◽  
Oana Iftime
Keyword(s):  
Alien Species ◽  
Fish Species ◽  
Perccottus Glenii ◽  
Review Of Literature ◽  
Reptile Species ◽  
Invasive Status ◽  
Alien Fish ◽  
The One ◽  
Alien Fish Species

The paper presents a review of literature data, supplemented with original observations, on the presence, establishment, distribution and invasive status of alien fish, amphibian and reptile species in Romania. Consistent criteria were followed in defining alien species records, establishment and invasive status. From the 48 alien fish species, 1 fish hybrid, 1 amphibian and 18 reptile species recorded, only 16 fishes and 3 reptiles can be regarded as established. Of these we consider the criteria for invasive status as being probably fulfilled by one fish species (Perccottus glenii), and less likely by six more fish species. The presence and the alien status of the one amphibian are debatable. No reptile species can be considered invasive at present.

Legislative Approach in Managing Environment Pollution by Alien Fish Species in Malaysia

2021 ◽  
Vol 39 (10) ◽  
Author(s):  
Asmida Ahmad ◽  
Nur Fazini Asro Bt. Ramzi Sulaiman ◽  
Nadia Bt. Abu Hasan
Keyword(s):  
Alien Species ◽  
Fish Species ◽  
Invasive Alien Species ◽  
Significant Risk ◽  
River Pollution ◽  
National Committee ◽  
Species Lists ◽  
Alien Fish ◽  
Negative Impacts ◽  
Alien Fish Species

River pollution has been a major problem in Malaysia and significantly affects the environment. One of the contributing issues would be the spread of invasive alien fish species that has given negative impacts on the environment and ecological disaster, the human health, harming the native animals and plants, as well the economy. Based on the National Committee on Invasive Alien Species Report in 2018, that 46 invasive alien species from a total of 130 species in the established main invasive alien species lists in Malaysia.  The alien fishes have been known to make their presence in our dams, lakes and rivers but not much attention has been paid to their existence. Based on these facts, it is proven that the issue poses a significant risk hence an urgent attention is required in managing this pollution through proactive legal measures to enforce strictly the existing law so as to prevent the halt of the spread of invasive species. A legal doctrinal and non-doctrinal modes of research are used to examine and review on the existing laws and/or policy governing this issue. This research will help to provide reference and strategic planning via legal approach for better controlling the invasion in our Malaysian waters.  

scholarly journals Socio-Economic Factors Responsible For Adoption of Alien Fish Species by Fish Farmers in Bangladesh

2019 ◽  
pp. 577-582
Author(s):  
Md. Hashmi Sakib ◽  
Arif Reza ◽  
Md. Safiul Islam Afrad ◽  
Sang-Go Lee
Keyword(s):  
Alien Species ◽  
Fish Species ◽  
Stepwise Regression ◽  
Management Strategies ◽  
Multiple Regression Model ◽  
Economic Factors ◽  
Aquaculture Industry ◽  
Alien Fish ◽  
Alien Fish Species ◽  
Socio Economic Factors

Adoption of alien fish species for aquaculture has become a common practice in Bangladesh. In this study, the socio-economic factors responsible for alien species adoption by fish farmers in Bogra District of Bangladesh were investigated. Data on adoption and socio-economic factors were collected from randomly selected 110 fish farmers. A multiple regression model was used to determine the factors influencing the adoption of alien fish species. The majority of the respondents (62.7%) belong to the moderate adoption category. The results showed that socio-economic factors such as commercialization, social participation, innovativeness, knowledge significantly affected fish farmers decision to adopt alien species. A stepwise regression analysis reveals that farmers knowledge on aquaculture is the deterministic factor regarding adoption. The trend of adopting alien fish species is not a concern limited to the study area, rather it reflects the general scenario of the aquaculture industry in Bangladesh. Therefore, socio-economic studies on alien fish species adoption could be helpful in forecasting future trends and formulating management strategies.

scholarly journals Taxonomic Status of Four Rare Alien Fish Species of the Kapchagay Reservoir (Balkhash Basin, Central Asia)

2021 ◽  
Vol 61 (3) ◽  
pp. 339-347
Author(s):  
N. Sh. Mamilov ◽  
T. G. Konysbaev ◽  
I. N. Magda ◽  
E. D. Vasil’eva
Keyword(s):  
Alien Species ◽  
Central Asia ◽  
Fish Species ◽  
Oreochromis Niloticus ◽  
Taxonomic Status ◽  
Invasive Fish ◽  
Parasalmo Mykiss ◽  
Alien Fish ◽  
First Time ◽  
Alien Fish Species

Abstract— Based on the morphological features, four rare alien species in the Kapchagai reservoir were identified: Coregonus peled, Parasalmo mykiss, Megalobrama mantschuricus, and Oreochromis niloticus. The latter two species were recorded for the ichthyofauna of Kazakhstan for the first time. Self-reproducing P. mykiss populations have been known in the Balkhash Basin since the late 1990s, whereas the introduction of C. peled into the Ili basin in 1968−1969 and 1971 did not lead to the naturalization of the species. The reasons for the great diversity of invasive fish species in the Kapchagai reservoir are overviewed.

scholarly journals Modern composition and distribution of alien fish species in the water bodies of the Krasnoyarsk Territory

2016 ◽  
Vol 7 (4) ◽  
pp. 324-332 ◽  
Author(s):  
I. V. Zuev ◽  
A. A. Vyshegorodtsev ◽  
S. M. Chuprov ◽  
D. V. Zlotnik
Keyword(s):  
Fish Species ◽  
Water Bodies ◽  
Alien Fish ◽  
Alien Fish Species

scholarly journals Glochidia ecology in wild fish populations and laboratory determination of competent host fishes for an endemic freshwater mussel of south-western Australia

2012 ◽  
Vol 60 (1) ◽  
pp. 26 ◽  
Author(s):  
Michael W. Klunzinger ◽  
Stephen J. Beatty ◽  
David L. Morgan ◽  
Gordon J. Thomson ◽  
Alan J. Lymbery
Keyword(s):  
Fish Species ◽  
Western Australia ◽  
Native Species ◽  
Freshwater Mussel ◽  
The Body ◽  
South West Coast ◽  
Benthic Fishes ◽  
Alien Fish ◽  
Host Fishes ◽  
Alien Fish Species

Glochidia (parasitic larvae) of freshwater mussels generally require a fish as a host. Westralunio carteri Iredale, 1934 (Bivalvia : Hyriidae), the only freshwater mussel found in south-western Australia, was listed as Vulnerable, but recently changed to Least Concern (International Union for the Conservation of Nature). Glochidia were found on four alien and seven native species of fish from 18 sites in the South West Coast Drainage Division. On alien fishes, prevalence of glochidia ranged from 0.0 to 41.0% and mean intensity (number of glochidia per infested fish) from 1.0 to 6.0, while on native fishes prevalence was 9.2–90.5% and intensity was 2.3–7.1. Glochidia infestation was greatest on benthic fishes, which may be a consequence of greater encounter rates, but other factors, such as host size, probably also influence glochidia prevalence and intensity. Glochidia were generally restricted to fins of infested fish, and were rarely on gills or the body surface. In the laboratory, four native and one alien fish species were found to be competent hosts for their ability to produce juvenile W. carteri, but two alien fish species were not. The inability of some alien fishes to produce juvenile W. carteri could potentially reduce recruitment success in areas dominated by alien fishes.

Distribution of alien fish species in small waterbodies of the Balkhash basin

2010 ◽  
Vol 1 (3) ◽  
pp. 181-186 ◽  
Author(s):  
N. Sh. Mamilov ◽  
G. K. Balabieva ◽  
G. S. Koishybaeva
Keyword(s):  
Fish Species ◽  
Small Waterbodies ◽  
Alien Fish ◽  
Alien Fish Species

scholarly journals INTERAKSI TROFIK KOMUNITAS IKAN DI DANAU MATANO, SULAWESI SELATAN PASCA BERKEMBANGNYA IKAN ASING INVASIF

2019 ◽  
Vol 25 (2) ◽  
pp. 117
Author(s):  
Dimas Angga Hedianto ◽  
Agus Arifin Sentosa
Keyword(s):  
Fish Species ◽  
Native Species ◽  
Fish Community ◽  
Feeding Strategy ◽  
Food Resources ◽  
Native Fish ◽  
Natural Food ◽  
Lake Matano ◽  
Alien Fish ◽  
Alien Fish Species

Interaksi trofik pasca masuknya ikan introduksi ataupun ikan asing invasif merupakan dasar untuk mengkaji tekanan ekologis terhadap ikan asli. Penelitian ini bertujuan untuk menganalisis interaksi trofik komunitas ikan pasca berkembangnya jenis-jenis ikan asing invasif di Danau Matano, Sulawesi Selatan. Ikan contoh diperoleh dari hasil tangkapan jaring insang percobaan, jala lempar, dan seser pada Mei, Oktober, dan November 2015 serta Februari, Juli, dan September 2016. Analisis ekologi trofik yang dilakukan meliputi indeks bagian terbesar, tingkat trofik, luas relung dan tumpang tindih relung makanan, serta pola strategi makan. Hasil penelitian menunjukkan komunitas ikan yang tertangkap di Danau Matano terdiri atas 9 famili, 11 genera, dan 17 spesies. Ikan louhan mendominasi komunitas ikan di Danau Matano sebesar 53,62%. Makanan alami yang banyak dimanfaatkan oleh sejumlah ikan dalam komunitas adalah insekta (Diptera), Gastropoda (Tylomelania sp.), dan larva insekta (Chironomidae). Kelompok trofik komunitas ikan di Danau Matano terdiri atas detritivora, herbivora, insektivora, zoobentivora, dan piscivora. Masuknya ikan introduksi memunculkan kelompok trofik baru (detritivora dan herbivora). Ikan introduksi cenderung memiliki luas relung makanan yang lebih bervariasi. Kompetisi terhadap makanan alami kategori moderat banyak terjadi antara ikan asli dengan louhan. Strategi pola makan ikan asli di Danau Matano cenderung bersifat spesialis, sedangkan ikan introduksi memiliki strategi pola makan yang lebih bervariasi dan oportunistik. Ikan louhan sebagai ikan introduksi dominan yang bersifat invasif mampu memanfaatkan seluruh sumber daya makanan alami yang tersedia dan menempati tingkat trofik tertinggi di Danau Matano. Tekanan ekologi terhadap ikan asli oleh ikan asing invasif di Danau Matano terjadi karena adanya kompetisi terhadap makanan alami.Trophic interactions post-develpment of non-native fish or invasive alien fish species are the basis knowledge for assessing and preventing the ecological pressure on native fish. This research aims to analyze the trophic interactions of fish community post-development of invasive alien fish species in Lake Matano, South Sulawesi. Fish samples were obtained from the catch of experimental gill nets, cast nets, and push nets in May, October, and November 2015 along with February, July, and September 2016. Trophic ecological analysis carried out included index of preponderance, trophic level, niche breadth and niche overlap of natural food, and feeding strategy. The fish community caught in Lake Matano consists of 9 families, 11 genera, and 17 species. Flowerhorn cichlid dominates the fish community in Lake Matano by 53.62%. Natural foods that are widely used by a number of fish in the community are Insecta (Diptera), Gastropods (Tylomelania sp.), and larvae of Insecta (Chironomidae). The guild trophic of fish community in Lake Matano consists of detritivores, herbivores, insectivores, zoobentivores, and piscivores. The introduction of non-native species bring up to new guilds (detritivores and herbivores). Non-native fishes tends to have a variety niche breadth. Moderate competition for natural food resources between native fish and flowerhorn cichlid is quite high. Feeding strategy of native species in Lake Matano tend to be specialist, while non-natives species have more variety and opportunistic. Flowerhorn cichlid as dominant invasive alien fish species is able to utilize all natural food resources and occupies the highest trophic level in Lake Matano. Ecological pressure on native fish by invasive alien fish species in Lake Matano occurs due to competition in obtaining natural food resources.

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