The structure of fish communities in Bistrita River, upstream the confluence with Siret River (Romania)

The researches were carried out in 2020 on the main course of Bistrița River, upstream the confluence with Siret River. The biological material was sampled in 10 sampling sites placed on the main course of Bistrița River. Seventeen fish species were identified, one of them being a non-native one: Pseudorasbora parva. We found that the chub and the Prussian carp are characteristic species. Species diversity is quite high, being identified even 12 fish species in some of the sampling sites. There is an unequal distribution of individuals by species. The main threats in the research area are the organic inputs and the increase of turbidity. However, there are no great imbalances, and there is a good capacity for self-support of aquatic communities.

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Studi Komparatif Komunitas Ikan Padang Lamun Pada Bulan Perbani Awal Dan Perbani Akhir Di Perairan Loleo Kecamatan Weda Selatan Kabupaten Halmahera Tengah

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v16i2.223 ◽

2016 ◽

Vol 16 (2) ◽

Author(s):

Farjan Kaeli, Riyadi Subur Dan Salim Abubakar

Keyword(s):

Community Structure ◽

Species Diversity ◽

Fish Species ◽

Fish Communities ◽

Seagrass Beds ◽

The Moon ◽

Siganus Canaliculatus ◽

Sphyraena Barracuda ◽

In The Beginning ◽

The Village

ABSTRAK Ikan memanfaatkan padang lamun sebagai habitatnya, ada yang hidup menetap dan adapula yang berkunjung ke padang lamun hanya untuk mencari makan atau untuk memijah, sebagai tempat untuk berlindung. Tujuan dari penelitian ini adalah mengetahui jumlah dan jenis ikan padang lamun yang tertangkap pada bulan perbani awal dan perbani akhir di Perairan Desa Loleo,mengetahui struktur komunitas ikan padang lamun yang tertangkap pada bulan perbani awal dan perbani akhir dan untuk mengetahui perbandingan komunitas ikan padang lamun yang tertangkap pada bulan perbani awal dan perbani akhir di Perairan Desa Loleo. Hasil penelitian diperoleh komposisi jenis ikan pada bulan perbani awal sebanyak 14 jenis yaitu Caranx ignobilis, Caranx melampygus, Alectis ciliaris, Selar crumenophthalmus, Choerodon anchorago, Cheilio inermis, Lethrinus microdon, Mulloidichthys flavolineatu, Gerres acinaces Bleeker, Siganus spinu, Siganus canaliculatus, Siganus doliatus, Hemiramphus sp, Balistoides viridescens. Sedangkan ikan pada bulan perbani akhir sebanyak 8 jenis yaitu Sphyraena barracuda, Siganus canaliculatus, Siganus doliatus, Zanclus cornutus, Lethrinus miniatus, Moolgarda seheli, Hemiramphus sp, Amanses scopas. Keanekaragaman jenis baik ikan yang tertangkap pada bulan perbani awal dan perbani akhir tergolong sedang, dan tidak ada jenis yang mendominansi serta penyebaran jenisnya sangat merata. Rata-rata hasil tangkapan antara bulan perbani awal dan perbani akhir memiliki perbedaan dan rata-rata hasil tangkapan terbanyak adalah pada bulan perbani awal. Kata Kunci : Komunitas, Ikan, Perbani Awal, Perbani Akhir, Padang Lamun.ABSTRACT Fish utilize seagrass beds as habitat, there were sedentary and those that visit to seagrass beds only to find food or to spawn, as a place of refuge. The purpose of this study was to determine the number and type of fish seagrass caught in neap beginning and neap end in Water Village Loleo, know the community structure of seagrass beds had been arrested in neap beginning and neap end and to compare the fish communities of seagrass caught in neap neap beginning and ending at the village Aquatic Loleo. The results obtained by the composition of fish species in neap early as 14 types of Caranx ignobilis, Caranx melampygus, Alectis ciliaris, scad crumenophthalmus, Choerodon anchorago, Cheilio inermis, Lethrinus microdon, Mulloidichthys flavolineatu, Gerres acinaces Bleeker, Siganus spinu, Siganus canaliculatus, Siganus doliatus, Hemiramphus sp, Balistoides viridescens. While the fish in neap late as 8 types of Sphyraena barracuda, Siganus canaliculatus, Siganus doliatus, Zanclus cornutus, Lethrinus miniatus, Moolgarda seheli, Hemiramphus sp, Amanses scopas. Good species diversity of fish caught in neap neap beginning and end is classified, and no kind mendominansi and very uneven spread of its kind. The average catches between the moon neap neap early and late have differences and average catches neap most was in the beginning. Keywords: Community, Fish, Early neap, neap End, Seagrass.

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Surface water connectivity affects lake and stream fish species richness and composition

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2020-0090 ◽

2020 ◽

Author(s):

Katelyn B.S. King ◽

Mary Tate Bremigan ◽

Dana M Infante ◽

Kendra Spence Cheruvelil

Keyword(s):

Species Richness ◽

Surface Water ◽

Species Diversity ◽

Fish Species ◽

Spatial Scales ◽

Fish Communities ◽

Integrated Approach ◽

Stream Fish ◽

Recreational Resources ◽

Fish Species Diversity

Stream and lake fishes are important economic and recreational resources that respond to alterations in their surrounding watersheds and serve as indicators of ecological stressors on aquatic ecosystems. Research suggests that fish species diversity is largely influenced by surface water connectivity, or the lack thereof; however, few studies consider freshwater connections and their effect on both lake and stream fish communities across broad spatial extents. We used fish data from 559 lakes and 854 streams from the midwestern/northeastern United States to examine the role of surface water connectivity on fish species richness and community composition. We found that although lakes and streams share many species, connectivity had a positive effect on species richness across lakes and streams and helped explain species composition. Taking an integrated approach that includes both lake and stream fish communities and connectivity among freshwaters helps inform scientific understanding of what drives variation in fish species diversity at broad spatial scales and can help managers who are faced with planning for state, regional, or national scale monitoring and restoration.

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Study of fish communities in the Siret river, and some tributaries (Bacau – Racaciuni section, 2012-2016)

10.53937/9789975315975.84 ◽

2019 ◽

Author(s):

Dorel Ureche ◽

◽

Camelia Ureche ◽

Keyword(s):

Fish Species ◽

Biological Material ◽

Research Study ◽

Fish Communities ◽

Actual State ◽

Ecological Indices ◽

Perccottus Glenii ◽

Ecological Analysis ◽

Fish Stocks ◽

Taxonomic Analysis

The study was carried out in Bacau - Racaciuni section of Siret River, on the main course of the river and on some of its tributaries during the period 2012-2016. The aim of our research study was to assess the actual state of fish communities in the study area, and also to highlight significant changes in fish communities, based on the ecological analysis. The biological material was sampled by electrofishing from 16 sampling sites, and then it was determined and immediately released. The taxonomic analysis highlights the presence of 27 fish species, two of them being non-native: Psedorasbora parva, and Perccottus glenii. Some of the ecological indices were calculated, as well as biodiversity indices (Margalef, Menhinik, Shannon-Wiener), evenness (equitability), and fish stocks. The ecological analysis revealed some interesting aspects of fish communities’ structure and also of biodiversity.

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Acoustic fish communities: sound diversity of rocky habitats reflects fish species diversity

Marine Ecology Progress Series ◽

10.3354/meps12812 ◽

2019 ◽

Vol 608 ◽

pp. 183-197 ◽

Cited By ~ 12

Author(s):

E Desiderà ◽

P Guidetti ◽

P Panzalis ◽

A Navone ◽

CA Valentini-Poirrier ◽

...

Keyword(s):

Species Diversity ◽

Fish Species ◽

Fish Communities ◽

Rocky Habitats ◽

Fish Species Diversity

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Impact of the invasive alien topmouth gudgeon (Pseudorasbora parva) and its associated parasite Sphaerothecum destruens on native fish species

Biological Invasions ◽

10.1007/s10530-019-02114-6 ◽

2019 ◽

Vol 22 (2) ◽

pp. 587-601 ◽

Cited By ~ 4

Author(s):

Frank Spikmans ◽

Pim Lemmers ◽

Huub J. M. op den Camp ◽

Emiel van Haren ◽

Florian Kappen ◽

...

Keyword(s):

Body Condition ◽

Fish Species ◽

Gasterosteus Aculeatus ◽

Fish Assemblages ◽

Significant Risk ◽

Fish Communities ◽

Water Bodies ◽

Native Fish ◽

Pseudorasbora Parva ◽

The Impact

Abstract The Asian cyprinid Pseudorasbora parva is considered to be a major threat to native fish communities and listed as an invasive alien species of European Union concern. Our study aims to gain evidence-based knowledge on the impact of both P. parva and its parasite Sphaerothecum destruens on native fish populations by analysing fish assemblages and body condition of individuals of native fish species in floodplain water bodies that were invaded and uninvaded by P. parva. We explored the use of environmental DNA (eDNA) techniques to detect S. destruens. Prevalence of S. destruens in native fish species was assessed. Fish samplings showed significantly negative correlations between the abundance of P. parva and the native Leucaspius delineatus, and Pungitius pungitius and three biodiversity indices of the fish assemblages (Simpson’s diversity index, Shannon–Wiener index and evenness). Contrastingly, the abundances of the native Gasterosteus aculeatus and P. parva were positively related. In nearly all isolated water bodies with P. parva, this species is outnumbering native fish species. No effect of P. parva presence was found on body condition of native fish species. Sphaerothecum destruens was demonstrated to occur in both P. parva and G. aculeatus. Gasterosteus aculeatus is suggested to be an asymptomatic carrier that can aid the further spread of S. destruens. Analysis of eDNA proved to be a promising method for early detection of S. destruens, here showing that S. destruens presence coincided with P. parva presence. The ongoing invasion of both P. parva and S. destruens is predicted to pose a significant risk to native fish communities.

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Native freshwater species get out of the way: Prussian carp ( Carassius gibelio ) impacts both fish and benthic invertebrate communities in North America

Royal Society Open Science ◽

10.1098/rsos.170400 ◽

2017 ◽

Vol 4 (10) ◽

pp. 170400 ◽

Cited By ~ 7

Author(s):

Jonathan L. W. Ruppert ◽

Cassandra Docherty ◽

Kenton Neufeld ◽

Kyle Hamilton ◽

Laura MacPherson ◽

...

Keyword(s):

North America ◽

Fish Species ◽

Native Species ◽

Fish Communities ◽

Benthic Invertebrate ◽

Freshwater Ecosystems ◽

Prussian Carp ◽

Invertebrate Communities ◽

Carassius Gibelio ◽

Benthic Invertebrate Communities

Prussian carp ( Carassius gibelio ) are one of the most noxious non-native species in Eurasia. Recently, Prussian carp, a non-native freshwater fish species, were genetically confirmed in Alberta, Canada and have been rapidly expanding their range in North America since establishment. Given their rapid range expansion, there is an increasing need to determine how Prussian carp may impact native species. We assessed the severity of the Prussian carp invasion by (i) determining their impact on fish communities, (ii) assessing their impact on benthic invertebrate communities, (iii) evaluating if Prussian carp alter abiotic conditions, and (iv) identifying where we find higher abundances of Prussian carp. When Prussian carp were established, we found significant changes to the fish community. Correspondingly, the degree of impact to benthic invertebrate communities was related to the stage of invasion (none, early or recent), where changes in fish communities were significantly concordant with changes in benthic invertebrate communities. Finally, we found that higher abundances of Prussian carp were significantly associated with lower abundances of a majority of native fish species. Altogether, using three lines of evidence, we determine that Prussian carp can have wide-ranging impacts on freshwater ecosystems in North America, pressing the need for management intervention.

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

Scientific Reports ◽

10.1038/s41598-021-93751-2 ◽

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.

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