Download or read book A Historical and Current Perspective of the Freshwater Mussel Fauna Bivalvia Unionidae from the Choctawhatchee River Drainage in Alabama and Florida written by Holly N. Blalock-Herod and published by . This book was released on 2004 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Mussels of Florida written by James D. Williams and published by University of Alabama Press. This book was released on 2014-09-30 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater Mussels of Florida is the only comprehensive, illustrated encyclopedia of all recorded species of mussels in the state of Florida.
Download or read book North American Freshwater Mussels written by Wendell R. Haag and published by Cambridge University Press. This book was released on 2012-08-27 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-illustrated book highlights freshwater mussels' fabulous diversity, amazing array of often bizarre ecological adaptations and their dire conservation plight. Summarizing and synthesizing historical and contemporary information as well as original research and analysis, the book describes the diverse array of mussel life history strategies and builds a cohesive narrative culminating in the development of explicit frameworks to explain pervasive patterns in mussel ecology. The fascinating and colorful role of mussels in human society is also described in detail, including the little-known pearl button industry of the early 1900s and the wild and often violent shell harvest of the 1990s. The final chapter details humans' efforts to save these fascinating animals and gives a prognosis for the future of the North American fauna. The book provides the first comprehensive review of mussel ecology and conservation for scientists, natural resource professionals, students and natural history enthusiasts.
Download or read book Information Series written by and published by . This book was released on 2015 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Malacological Bulletin written by and published by . This book was released on 2008 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Historical and Current Examination of Freshwater Mussels Bivalvia Margaritiferidae Unionidae in the Duck River Basin Tennessee written by Steven A. Ahlstedt and published by . This book was released on 2004 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Freshwater Mussels Bivalvia Unionidae of the Fox River Basin Illinois and Wisconsin written by Robert W. Schanzle and published by Sagwan Press. This book was released on 2018-02-07 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book The Freshwater Mussels Bivalvia Unionidae of the Harpeth River Drainage and the Upper and Middle Duck River Tributaries Tennessee written by Kristin Leigh Irwin and published by . This book was released on 2018 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cumberland and Tennessee River drainages harbor high diversity and endemism of freshwater mussels. The faunas of the Harpeth River drainage and Duck River tributaries have been disproportionally understudied relative to other Cumberlandian streams. Forty-two sites on 23 tributaries in the Harpeth River drainage and a 21-kilometer reach of the main channel were assessed qualitatively for freshwater mussels. Relic shells of four species were observed in eight sites on four of the tributaries. Twenty species were observed in the main channel including the discovery of a new Harpeth River drainage record: Simsponaias ambigua. Catch per unit effort (CPUE) ranged from 0.0 to 32.0 mussels/h. Lampsilis fasciola and Potamilus alatus were the most abundant species. Mussel populations were fragmented and all species exhibited primarily large size-classes. Eighty-three sites on 37 tributaries in the upper and middle Duck River drainage were sampled qualitatively. Nineteen species were observed and 12 were collected live or fresh dead, and CPUE ranged from 0.0 to 58.0 mussels/h. Villosa vanuxemensis and Villosa taeniata were the most abundant and widespread species observed. Live mussels were found in only five tributaries, although mussels historically occurred in 17 of the sampled streams. Length frequency analysis indicated recent recruitment for four species in Big Rock Creek. Results of canonical correspondence analysis for both drainages revealed no association between environmental variables and mussel community structure (live and fresh dead individuals combined), likely a result of low densities. Two sites on Big Rock Creek in the Duck River drainage were sampled quantitatively using 0.25-m2 quadrats. Densities were 0.33 and 1.27 mussels/0.25m2 and species richness ranged from four to five. Quantitative sampling indicated that qualitative timed searches may be sufficient for detecting recruitment in small streams. Anthropogenic alteration has resulted in extensive loss of freshwater mussel habitat, leading to local extirpations and a reduction of diversity and abundance in both watersheds.
Download or read book Assessment of a Freshwater Mussel mollusca Bivalvia Community in the Licking River at Butler Pendleton County Kentucky written by Bryce Edward Daniels and published by . This book was released on 2000 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was undertaken to assess the current condition of the freshwater mussel (also called unionid) (Bivalvia: Unionidae) community in the Licking River at the State Route 177 bridge crossing in Butler, Pendleton County, Kentucky. A recent study indicated a drastic decline in the reproduction occurring in this historically diverse assemblage, evident through findings of few glochidia in stream drift and the absence of glochidial encystment on any of the fishes collected. An intensive community analysis provided information on the current size demography of the resident populations, and monitored the presence of species historically known from this site. It also provided evidence of juvenile recruitment and reproduction, through presence/absence of juveniles at the site and glochidia (mussel larvae) in drift net samples or encysted upon fishes. Results from this survey would be useful for future monitoring of this community, and would provide important information that can be used in comparison with other mussel assemblages for which various have been quantified. Land use practices that had been or are currently being employed upstream of the proposed study site were considered to better understand the point and nonpoint source pollution factors that might be influencing community changes. It was hypothesized that upstream land use practices were contributing to a previously documented decline of reproduction at this locality. Qualitative and quantitative searches yielded 27 extant unionid species within the area, and resulted in the discovery of juveniles of eight species, including two juveniles of the state and federally endangered fanshell, Cyprogenia stegaria. Quantitative sampling, consisting of substrate excavation of randomly selected 0.25 m2 plots yielded 130 individual unionids, representing 17 species, at a total density of approximately 4.3 unionids / m2. Calculations showed the most abundant species, the spike, Elliptio dilatata, to have had the highest importance value in the quantitavely sampled areas. Analysis of drift net samples yielded 159 unionid glochidia and 434 juvenile Corbicula fluminea, the exotic Asian clam, out of approximately 730 m3 of stream drift. Examination of 545 fishes collected from the site yielded 241 glochidia encysted on either gills or fins of 47 individual fish hosts, for an average of 5.13 glochidia per infected fish. Eight species of fish were represented by hosts bearing encysted glochidia. These eight species comprised 71.74% of all fishes collected. The emerald shiner, Notropis atherinoides, was the most abundant fish from the three collections, bore the most glochidia, and had the highest prevalence of encystment. Twenty-seven emerald shiners were encysted with 195 unionid larvae; one individual was found bearing 105 glochidia encysted upon its gills. The dominant human influence in the lower Licking River drainage is agriculture, which has lead to a decrease of riparian buffer along a large proportion of the banks within the watershed, and has also allowed livestock access to the streams. The decrease of a riparian buffer and cattle access allows for more direct introduction of chemicals (i.e., pesticides and fertilizers), as well as decreases bank stability, which, in turn, leads to excessive sediment introduction. Such anthropogenic factors and large numbers of C. fluminea, have likely impacted the resident mussel fauna. Although this mussel community remains diverse, the lack of juvenile representation for all but eight species indicated a breakdown in a very important stage in the life history for the rest of the community. Recent reproduction was evident through the presence of glochidia encysted on host fishes and being broadcast into the water column; however, accurate recruitment patterns for resident populations could not be obtained without identification of the glochidia. The only definitive sign of a particular species having recently recruited new members was through the presence of juveniles in the quantitative and/or qualitative samples. These analyses provided baseline population data for each species which can be used in future monitoring of this biologically and historically significant site. There is a great need for future monitoring of such communities, so dynamics of the community can be more definitively recorded, and fluctuations in population structures can be analyzed. Compilations of long-term monitoring efforts on such diverse mussel communities should allow more accurate speculation, in comparison to watersheds with similar land uses, on the effects of such anthropogenic factors as point and nonpoint source pollutants on unionids. Better understanding of the impacts of these factors to natural communities should lead to better management strategies to ameliorate these impacts, conserving existing communities.
Download or read book Mussels Bivalvia Unionoidea of the Cumberland River written by Mark Edward Gordon and published by . This book was released on 1989 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Survey of the Freshwater Mussels Bivalvia written by Kevin S Cummings and published by Palala Press. This book was released on 2015-09-07 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book A Survey of the Freshwater Mussels Bivalvia Unionidae of the Sangamon River Basin Illinois 137 written by Kevin S. Cummings and published by Palala Press. This book was released on 2018-03-03 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Community Ecology of Three Freshwater Mussel Species Bivalvia Unionidae from the New River Suwannee Drainage Florida written by Holly N. Blalock-Herod and published by . This book was released on 2000 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Freshwater Mussels Unionidae in the Upper Ohio River Near Huntington West Virginia written by Andrew C. Miller and published by . This book was released on 1995 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Population Genetic Structure of Quadrula Aurea Bivalvia Unionidae A Threatened Freshwater Mussel in Central Texas written by Jeffrey A. Mabe and published by . This book was released on 2018 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthropogenic alteration of riverine ecosystems has led to declines in the abundance and diversity of freshwater mussels (Bivalvia: Unionoida) worldwide. Central Texas is home to a diverse freshwater mussel fauna including three candidates for federal listing under the Endangered Species Act. Surveys conducted over the last few decades suggest many of the endemic freshwater mussel species in Texas exist in small isolated populations that may be vulnerable to the deleterious effects of genetic diversity loss. Microsatellite primers from two closely related species were used to identify a set of genetic markers that functioned in the Golden Orb (Quadrula aurea). Microsatellite markers were then applied to document the population genetic structure of Q. aurea within and among three connected river drainages in southeastern Texas. Gene flow within existing Q. aurea populations appears high indicating little potential for genetic issues stemming from isolation and inbreeding. Two weakly divergent admixed populations were identified occupying the San Antonio and Guadalupe/San Marcos rivers. Population genetic structure was related to river basin affiliation, but results for environmental factors were unresolved. Current effective population size estimates are large for the Guadalupe/San Marcos drainage and moderately large for the San Antonio drainage and there is no clear genetic evidence of contemporary population declines. Transport in the glochidial phase by a highly mobile host fish, the channel catfish (Ictalurus punctatus), may provide a mechanism for maintaining connectivity among spatially discrete mussel beds and deserves further study. Information on the occurrence and habitat associations of Q. aurea and two other threatened freshwater mussel species was documented. Quantification of the population genetic structure for Q. aurea provides important information needed for the management of this species, a baseline for understanding future changes, and insight into the factors that shape the population genetic structure of other threatened unionids in Texas.
Download or read book Distribution and Habitat of Freshwater Mussels Bivalvia Unionoida Unionidae in Colorado written by James R. Cordeiro and published by . This book was released on 1999 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Freshwater Mussels Bivalvia written by Robert W. Schanzle and published by . This book was released on 2013-10 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
