Conservation, Ecology, and Management of Catfish: The Second International Symposium

Conservation, Ecology, and Management of Catfish: The Second International Symposium ◽

10.47886/9781934874257.ch62 ◽

2011 ◽

Keyword(s):

Food Source ◽

Conservation Status ◽

Freshwater Mussel ◽

Freshwater Ecosystems ◽

State Laws ◽

Mussel Species ◽

Symbiotic Relationships ◽

Mussel Shells ◽

The Many ◽

Freshwater Mollusks

<em>Abstract</em>.—Catfishes are important in freshwater ecosystems not only as consumers, but also as essential partners in symbiotic relationships with other organisms. Freshwater mollusks are among the many organisms that have interactions with catfishes. For example, ictalurids are hosts for larvae of several native freshwater mussel species. The larvae, which attach briefly to gills or fins of fish to complete their development to the free-living juvenile stage, disperse via upstream and downstream movement of host fish. In turn, freshwater mussels serve as a food source for some catfish species while other catfish species may use spent mussel shells for habitat. Ictalurids also benefit from the conservation status of many freshwater mussel species. Federal and state laws protecting these invertebrates can preserve water quality and habitat and, at times, provide incentives and funding for conservation and restoration of stream and riparian habitats.

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Conservation status of two endangered freshwater mussel species in Bavaria, Germany: Habitat quality, threats, and implications for conservation management

Aquatic Conservation Marine and Freshwater Ecosystems ◽

10.1002/aqc.3310 ◽

2020 ◽

Vol 30 (4) ◽

pp. 647-661

Author(s):

Katharina Stoeckl ◽

Marco Denic ◽

Juergen Geist

Keyword(s):

Habitat Quality ◽

Conservation Management ◽

Conservation Status ◽

Freshwater Mussel ◽

Mussel Species

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Conservation status and a novel restoration of the endangered freshwater mussel Unio crassus Philipsson, 1788: Poland case

Knowledge and Management of Aquatic Ecosystems ◽

10.1051/kmae/2021003 ◽

2021 ◽

pp. 3

Author(s):

Marianna Soroka ◽

Barbara Wasowicz ◽

Katarzyna Zając

Keyword(s):

Genetic Diversity ◽

Conservation Status ◽

Freshwater Mussel ◽

Freshwater Ecosystems ◽

Anthropogenic Influence ◽

Population Abundance ◽

Protection Measures ◽

Active Protection ◽

New Localities ◽

Improve Water Quality

Bivalves play an important part in freshwater ecosystems and improve water quality; the thick-shelled river mussel Unio crassus is classified as a bioindicator. Unfortunately, the species is regarded as endangered and is under species protection in the whole of Europe. The reasons for the drastic decline of its populations are: considerable eutrophication of waters, anthropogenic influence in its broad sense and the presence of invasive species. The life cycle of U. crassus includes the stage of larva which is an obligatory parasite of fish. This makes it possible for the species to disperse and populate new territories but it limits the development to places where appropriate host species are available. Intensive measures have been taken in Poland to protect U. crassus, while in France numerous new localities of the species have been bar-coded. In 2010–2014 active protection measures were taken in southern Poland, including inventorying, studies of genetic diversity and reintroductions. The project contributed to the increase in population abundance and in the number of localities of the thick-shelled river mussel, which resulted in a twofold increase in the range of occurrence of the species in the river. The procedures presented here can and should be used in further restitution of U. crassus not only in Poland but also elsewhere in Europe.

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The Patterns and Puzzles of Genetic Diversity of Endangered Freshwater Mussel Unio crassus Philipsson, 1788 Populations from Vistula and Neman Drainages (Eastern Central Europe)

Life ◽

10.3390/life10070119 ◽

2020 ◽

Vol 10 (7) ◽

pp. 119

Author(s):

Adrianna Kilikowska ◽

Monika Mioduchowska ◽

Anna Wysocka ◽

Agnieszka Kaczmarczyk-Ziemba ◽

Joanna Rychlińska ◽

...

Keyword(s):

Genetic Diversity ◽

Genetic Structure ◽

Spatial Scales ◽

Freshwater Mussel ◽

Its Region ◽

Strong Relationship ◽

Mantel Test ◽

Freshwater Ecosystems ◽

Hierarchical Organization ◽

Anthropogenic Factors

Mussels of the family Unionidae are important components of freshwater ecosystems. Alarmingly, the International Union for Conservation of Nature and Natural Resources Red List of Threatened Species identifies almost 200 unionid species as extinct, endangered, or threatened. Their decline is the result of human impact on freshwater habitats, and the decrease of host fish populations. The Thick Shelled River Mussel Unio crassus Philipsson, 1788 is one of the examples that has been reported to show a dramatic decline of populations. Hierarchical organization of riverine systems is supposed to reflect the genetic structure of populations inhabiting them. The main goal of this study was an assessment of the U. crassus genetic diversity in river ecosystems using hierarchical analysis. Different molecular markers, the nuclear ribosomal internal transcribed spacer ITS region, and mitochondrial DNA genes (cox1 and ndh1), were used to examine the distribution of U. crassus among-population genetic variation at multiple spatial scales (within rivers, among rivers within drainages, and between drainages of the Neman and Vistula rivers). We found high genetic structure between both drainages suggesting that in the case of the analyzed U. crassus populations we were dealing with at least two different genetic units. Only about 4% of the mtDNA variation was due to differences among populations within drainages. However, comparison of population differentiation within drainages for mtDNA also showed some genetic structure among populations within the Vistula drainage. Only one haplotype was shared among all Polish populations whereas the remainder were unique for each population despite the hydrological connection. Interestingly, some haplotypes were present in both drainages. In the case of U. crassus populations under study, the Mantel test revealed a relatively strong relationship between genetic and geographical distances. However, in detail, the pattern of genetic diversity seems to be much more complicated. Therefore, we suggest that the observed pattern of U. crassus genetic diversity distribution is shaped by both historical and current factors i.e. different routes of post glacial colonization and history of drainage systems, historical gene flow, and more recent habitat fragmentation due to anthropogenic factors.

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Detecting the brook floater, a freshwater mussel species at risk, using environmental DNA

Aquatic Conservation Marine and Freshwater Ecosystems ◽

10.1002/aqc.3551 ◽

2021 ◽

Author(s):

F. LeBlanc ◽

R. Steeves ◽

V. Belliveau ◽

F. Akaishi ◽

N. Gagné

Keyword(s):

At Risk ◽

Freshwater Mussel ◽

Environmental Dna ◽

Species At Risk ◽

Mussel Species

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Comparative physiological, biochemical and molecular thermal stress response profiles for two unionid freshwater mussel species

Journal of Experimental Biology ◽

10.1242/jeb.140129 ◽

2016 ◽

Vol 219 (22) ◽

pp. 3562-3574 ◽

Cited By ~ 14

Author(s):

Samantha L. Payton ◽

Paul D. Johnson ◽

Matthew J. Jenny

Keyword(s):

Thermal Stress ◽

Stress Response ◽

Freshwater Mussel ◽

Mussel Species ◽

Response Profiles

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Twelve Agendas on Interacting with Information: A Human-Engaged Computing Perspective

Data and Information Management ◽

10.2478/dim-2020-0015 ◽

2020 ◽

Vol 4 (3) ◽

pp. 191-199

Author(s):

Chen Wang ◽

Xiaojun (Jenny) Yuan ◽

Xiangshi Ren

Keyword(s):

Personal Development ◽

Human Interaction ◽

Good Opportunity ◽

Digital Platforms ◽

Symbiotic Relationships ◽

Digital Devices ◽

Global Pandemic ◽

Information Interaction ◽

The Many ◽

Current Paradigm

AbstractDuring the coronavirus global pandemic crisis, we have received information from authentic and inauthentic sources. Fake news, continuous rumors, and prejudiced opinions from digital platforms and social media have the capacity to disrupt social harmony, to stall personal development, and to undermine trust on all levels of human interaction. Despite the wide plurality of perspectives, the diversity of contents, the variety of voices, and the many often-conflicting reasons for publishing, our interactions with information on digital devices are progressively shaping such situations and affecting decisions on all levels. We look at the limitations of existing designs and guidelines in the current paradigm, and we ask to what extent researchers and developers can focus and contribute, through their innovations, to the reduction of uncertainty and cases of misdirection, how they can mitigate tensions between information and humans, and how they can contribute to the maintenance and enhancement of worthy human values. Human-engaged computing (HEC) calls for innate user capacities to be enhanced rather than displaced by digital technologies so that the human factor in interactions is fully exploited and truly efficient symbiotic relationships between humans and devices can be achieved. Under the framework of HEC, we propose 12 research agendas from the theoretical, principled, and practical aspects, in order to develop future synergized interactions between humans and information. The present crisis presents us with a good opportunity to reflect on the need to empower humans in relation to the tools they use and to consider the next paradigm shift for designing information interaction.

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