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.

scholarly journals A Composition and Abundance of Alien Fish Species in Inland Waters, Southern Iraq

2021 ◽  
pp. 373-386
Author(s):  
Abdul Hussein J. Abdullah ◽  
Sajad A. Abdullah ◽  
Ali T. Yaseen
Keyword(s):  
Fish Species ◽  
Native Species ◽  
Fish Populations ◽  
Native Fish ◽  
Fish Community Structure ◽  
Negative Effects ◽  
Fish Samples ◽  
Alien Fish ◽  
Southern Iraq ◽  
Alien Fish Species

Alien fish species have negative effects on the abundance, diversity and richness of native fish species in southern Iraq. The numbers of alien fish species are constantly increasing due to the entry of invasive species. This has resulted in shifts in the historical composition of fish community structure and scarcity of some native species which represent the keystone in the building of fish populations.     Fish samples were monthly collected from three sites in southern Iraq (Al-Chibyaish marsh, the lower parts of Euphrates River, and the northern part of Shatt Al-Arab River) from April 2017 to June 2018. A total of 14,853 individuals of fish were sampled, which represented 26 species, 24 genera and 13 families of bony fishes. Ten alien fish species were recorded, affiliated to nine genera and five families, namely Cichlidae, Cyprinidae, Heteropneustidae, Poeciliidae and Xenocyprididae. Three alien fish species dominated the abundance in the three sites; the Prussian carp Carassuis gibelio comprised 12.58%, 26.19%, and 13.84%, the Blue tilapia Oreochromis aureus formed 16.78%, 13.66%, and 18.79%, , and the Redbelly tilapia Coptodon zillii comprised 7.37%, 7.71%, and 14.66% of the total number of species in three study sites respectively. (  …. )      These alien fish species created serious shifting in fish composition, diversity, richness, and abundance of native fish populations in comparison to the results of the historical survey in southern Iraq.

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.

scholarly journals Ekologi trofik komunitas ikan di Sungai Nimbai: Interaksi kompetisi dan pemangsaan terhadap ikan pelangi arfak, Melanotaenia arfakensis Allen, 1990

2019 ◽  
Vol 19 (3) ◽  
pp. 449
Author(s):  
Emmanuel Manangkalangi ◽  
M. Fadjar Rahardjo ◽  
Renny K Hadiaty ◽  
Sigid Hariyadi ◽  
Charles P. H. Simanjuntak
Keyword(s):  
Fish Species ◽  
Trophic Ecology ◽  
Anthropogenic Activities ◽  
River System ◽  
Niche Overlap ◽  
Trophic Niche ◽  
Native Fish ◽  
Fish Samples ◽  
Alien Fish ◽  
Alien Fish Species

Information on trophic ecology can provide an understanding of the functional role of fish in an ecosystem, including endemic and native fish groups, as well as alien fish that are introduced through anthropogenic activities. The research on the trophic ecology of the fish community in the Nimbai Stream, Prafi River system, is intended to describe the interaction of competition and predation, especially towards endemic fish, Melanotaenia arfakensis. Fish samples were collected monthly from four habitat types, i.e., slow littoral, medium littoral, pool, and run from May 2016 to April 2017. A combination of an electric shocker and a hand net was used to collect fish samples. A total of 16 fish species were collected, consists of one endemic species, namely M. arfakensis, nine species of native fish, and six species of alien fish. The Arfak rainbowfish and three native fish species were categorized as insectivorous, four native fish species as herbivorous, and two other fishes as carnivorous. Three alien fish species also belong to insectivorous, two alien fish species as carnivorous, and one species as herbivorous. The niche breadth of fish communities ranges from 0.071 to 0.857. The trophic niche overlap between the Arfak rainbowfish and three native fish species and three alien fish species was recorded. The results of this study indicate a potential competition and predation interactions between Arfak rainbowfish and native fish as well as with alien fish species. Therefore, introducing alien fish into Prafi River system will disrupt Arfak rainbowfish population.

Alien fish species in the Czech Republic and their impact on the native fish fauna

2010 ◽  
Vol 59 (1) ◽  
pp. 57-72 ◽  
Author(s):  
Stanislav Lusk ◽  
Věra Lusková ◽  
Lubomír Hanel
Keyword(s):  
Czech Republic ◽  
Fish Species ◽  
Fish Fauna ◽  
Native Fish ◽  
The Czech Republic ◽  
Alien Fish ◽  
Alien Fish Species

scholarly journals Occurrence of alien spirlin (Alburnoidessp.) in the Neretva river basin

2019 ◽  
pp. 15 ◽  
Author(s):  
Jasna Vukić ◽  
Kristýna Eliášová ◽  
Dario Marić ◽  
Radek Šanda
Keyword(s):  
River Basin ◽  
Bosnia And Herzegovina ◽  
Fish Species ◽  
Native Species ◽  
Public Awareness ◽  
River Basins ◽  
Freshwater Ecosystems ◽  
Danube River ◽  
Alien Fish ◽  
Alien Fish Species

Northern Mediterranean region is characterised by an exceptional richness of the freshwater ichthyofauna. Many fish species of this region are endemic to a single or a few river basins. This is also the case of the Neretva river basin (Adriatic Sea slope), where 17 out of 34 native species are endemic solely to this river basin. However, these unique Mediterranean freshwater ecosystems are fragile and are susceptible to human-induced changes, including introduction of alien fish species. We report here a finding of the 32ndalien fish species in the Neretva river basin, spirlinAlburnoidessp., which was found at two localities in Bosnia and Herzegovina. The spirlin species was identified by molecular means as so far unnamed species with the native range in the Sava river basin (Danube river basin, Black Sea slope). Based on the comparison ofcytochrome bsequences, the introduced population originated most probably from nearby rivers of the Danube basin in Bosnia and Herzegovina (Vrbas and Bosna river basins). Such a high number of alien fish species reported in a single river basin is alarming and pointing to a necessity of raising public awareness, especially among local fishermen.

scholarly journals STATUS INTRODUKSI IKAN DAN STRATEGI PELAKSANAAN SECARA BERKELANJUTAN DI PERAIRAN UMUM DARATAN DI INDONESIA

2013 ◽  
Vol 5 (2) ◽  
pp. 113 ◽  
Author(s):  
Chairulwan Umar ◽  
Priyo Suharsono Sulaiman
Keyword(s):  
Fish Species ◽  
Implementation Strategy ◽  
Inland Waters ◽  
Fish Introduction ◽  
Fish Introductions ◽  
Field Verification ◽  
Lake Matano ◽  
History Of ◽  
Alien Fish ◽  
Alien Fish Species

<p>Masuknya jenis ikan asing berpotensi merubah keseimbangan pada perairan umum daratan, dan di Indonesia gejala ini sudah mulai terlihat. Makalah ini bertujuan untuk membahas lebih lanjut tentang perkembangan introduksi ikan asing, strategi pelaksanaan intoduksi dan berbagai dampaknya terhadap komunitas ikan asli perairan di Indonesia. Penelitian dilakukan melalui penelusuran dan studi pustaka tentang: sejarah kegiatan introduksi ikan yang dilakukan ke Indonesia, jenis-ikan introduksi ikan di Indonesia dan kegiatan introduksi ikan yang telah dan dilakukan di Indonesia beserta dampaknya. Verifikasi lapangan dilakukan pada tahun 2011 di beberapa danau dan waduk antara lain Danau Sentani, Danau Kerinci, Danau Matano dan Waduk Riam Kanan. Data yang terkumpul ditabulasi dan dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa introduksi ikan asing dilakukan di Indonesia sebelum tahun 1900. Introduksi ikan yang telah dilakukan selama ini, lebih banyak dilakukan tanpa melalui kajian ilmiah yang mendalam dan telah terbukti mengakibatkan hilang atau berkurangnya populasi ikan asli atau endemik serta menjadi agen pembawa penyakit.</p><p>The entry of alien fish species could potentially change the balance of the inland waters and in Indonesia this symptoms was shown. The paper aims are to discuss more about the development introduction of alien fish species, the introduction implementation strategy and its impact to indigenous fish species communities in Indonesian inland waters. The study was conducted through a literature research about: the history of fish introductions activities which carried out in Indonesia, the species of fish introduction in Indonesia and the activities of introduction fish that have been conducted in Indonesia and its impact. Field verification was conducted in 2011 at several lakes and reservoir such us: Sentani Lake, Kerinci Lake, Matano Lake and Riam Kanan Reservoir. The collected data were tabulated and analyzed descriptively. The results showed that alien fish introductions were conducted in Indonesia before 1900. Introductions of fish those have been conducted so far is mostly done without in-depth scientific study and it has been shown affected in lost or reduced populations of indigenous or endemic species of fish as well as being an agent of disease carrier.</p>

scholarly journals Advancing improvement in riverine water quality caused a non-native fish species invasion and native fish fauna recovery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Łukasz Głowacki ◽  
Andrzej Kruk ◽  
Tadeusz Penczak
Keyword(s):  
Water Quality ◽  
Fish Species ◽  
Native Species ◽  
Interference Competition ◽  
Fish Fauna ◽  
Species Traits ◽  
Native Fish ◽  
Biological Degradation ◽  
Species Invasion ◽  
Prussian Carp

AbstractThe knowledge of biotic and abiotic drivers that put non-native invasive fishes at a disadvantage to native ones is necessary for suppressing invasions, but the knowledge is scarce, particularly when abiotic changes are fast. In this study, we increased this knowledge by an analysis of the biomass of most harmful Prussian carp Carassius gibelio in a river reviving from biological degradation. The species' invasion followed by the invasion's reversal occurred over only two decades and were documented by frequent monitoring of fish biomass and water quality. An initial moderate improvement in water quality was an environmental filter that enabled Prussian carp’s invasion but prevented the expansion of other species. A later substantial improvement stimulated native species’ colonization of the river, and made one rheophil, ide Leuciscus idus, a significant Prussian carp’s replacer. The redundancy analysis (RDA) of the dependence of changes in the biomass of fish species on water quality factors indicated that Prussian carp and ide responded in a significantly opposite way to changes in water quality in the river over the study period. However, the dependence of Prussian carp biomass on ide biomass, as indicated by regression analysis and analysis of species traits, suggests that the ecomorphological similarity of both species might have produced interference competition that contributed to Prussian carp’s decline.

scholarly journals The first unified inventory of non-native fishes of the South Caucasian countries, Armenia, Azerbaijan, and Georgia

2021 ◽  
pp. 32
Author(s):  
Tatia Kuljanishvili ◽  
Levan Mumladze ◽  
Bella Japoshvili ◽  
Namig Mustafayev ◽  
Shaig Ibrahimov ◽  
...  
Keyword(s):  
Black Sea ◽  
Fish Species ◽  
Caspian Sea ◽  
Native Species ◽  
Biological Diversity ◽  
Native Fish ◽  
The Black Sea ◽  
The South ◽  
In The Wild ◽  
Native Fishes

The South Caucasus (SC) region is recognized for its high biological diversity and various endemic animal taxa. The area has experienced many fish introductions over the years, but the overall information about non-native fishes in the three SC countries, Armenia, Azerbaijan, and Georgia did not exist. Although these three countries belong to the Kura River drainage, Caspian Sea basin (only the western half of Georgia drains into the Black Sea), the legislative framework for each country regarding introduction of non-native fish species and their treatment is different and poorly developed. The goal of the present study was to make an initial inventory of non-native fish species in the three SC countries, and summarize the existing knowledge as a basis for future risk assessment models and formulation of regional management policies. Here, we present a unified list of 27 non-native species recorded in the wild in Armenia, Azerbaijan, and Georgia. Among these 27 species, eight were translocated from the Black Sea basin to the Caspian Sea basin. Out of these 27 non-native fishes, 15 species have become established (three of them being considered invasive) and six fish species could not survive in the wild.

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

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.  

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