The importance of genetic cluster recognition for the conservation of migratory fish species: the example of the endangered European huchenHucho hucho(L.)

2009 ◽  
Vol 75 (5) ◽  
pp. 1063-1078 ◽  
Author(s):  
J. Geist ◽  
M. Kolahsa ◽  
B. Gum ◽  
R. Kuehn
Keyword(s):  
Fish Species ◽  
Migratory Fish ◽  
Genetic Cluster ◽  
Cluster Recognition

scholarly journals A description of mercury in fishes from the Madeira River Basin, Amazon, Brazil

2008 ◽  
Vol 38 (3) ◽  
pp. 431-438 ◽  
Author(s):  
Wanderley Rodrigues Bastos ◽  
Mauro de Freitas Rebelo ◽  
Márlon de Freitas Fonseca ◽  
Ronaldo de Almeida ◽  
Olaf Malm
Keyword(s):  
Body Weight ◽  
River Basin ◽  
Fish Species ◽  
Temporal Trends ◽  
Migratory Fish ◽  
Madeira River ◽  
Interspecies Variability ◽  
Total Hg ◽  
Madeira River Basin ◽  
Hg Accumulation

Over the last 20 years several projects carried on the Madeira River basin in the Amazon produced a great amount data on total Hg concentration in different fish species. In this paper we discuss temporal trends in Hg contamination and its relation to body weight in some of those fishes, showing that even within similar groups, such as carnivorous and non-migratory fish, the interspecies variability in Hg accumulation is considerable.

scholarly journals Morphological differentiation among migratory fish species from the Paraná River basin

2012 ◽  
Vol 12 (4) ◽  
pp. 41-49 ◽  
Author(s):  
Lucileine de Assumpção ◽  
Maristela Cavicchioli Makrakis ◽  
Sergio Makrakis ◽  
Pitágoras Augusto Piana ◽  
Patrícia Sarai da Silva ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Fish Passage ◽  
Paraná River ◽  
Migratory Fish ◽  
Migratory Species ◽  
Caudal Peduncle ◽  
Parana River ◽  
Maximum Body ◽  
Paraná River Basin

This study characterized the morphological differences among migratory fish species from the Paraná River Basin. A total of 177 adult fish of Leporinus elongatus, Leporinus macrocephalus, Prochilodus lineatus, Salminus brasiliensis, Pimelodus maculatus, Pinirampus pirinampu, Pseudoplatystoma corruscans, Pterodoras granulosus, and Rhaphiodon vulpinus were sampled in the Canal da Piracema, a fish passage system at Itaipu Dam, Paraná River. The migratory species were analyzed through 22 morphometric measurements and fineness ratio to identify morphological patterns related to swimming performance. Four species groups were indicated by the Cluster analysis: I) R. vulpinus; II) P. corruscans; III) L. macrocephalus, L. elongatus, P. lineatus, P. maculatus, and S. brasiliensis - measurements of head height and anal fin length formed this group; and IV) P. granulosus and P. pirinampu - measurements of maximum body width and caudal peduncle width contributed to form this group. The morphometric variables that most contributed to the distinction were head length and mouth width for groups I and II. The species R. vulpinus and P. granulosus differed from other species, showing fineness ratios of 9.4 and 3.7, respectively. Leporinus elongatus, L. macrocephalus, P. lineatus, P. maculatus, and S. brasiliensis showed significant differences from other species, with ratios ranging from 4.57 to 5.19, indicating that these species may be better swimmers. Long-distance migratory species using the Piracema Canal to ascend upstream areas differed morphologically, morphological characteristics such as a narrow caudal peduncle and maximum body length, besides to the values of the fineness ratio, were essential to differentiate the migratory species.

Swimming performance of upstream migrant fishes in open-channel flow: a new approach to predicting passage through velocity barriers

2004 ◽  
Vol 61 (9) ◽  
pp. 1590-1601 ◽  
Author(s):  
Alex Haro ◽  
Theodore Castro-Santos ◽  
John Noreika ◽  
Mufeed Odeh
Keyword(s):  
Fish Species ◽  
Open Channel ◽  
Swimming Performance ◽  
Fish Passage ◽  
Maximum Distance ◽  
Migratory Fish ◽  
Alosa Pseudoharengus ◽  
Interspecific Differences ◽  
Alosa Aestivalis ◽  
Few Data

The ability to traverse barriers of high-velocity flow limits the distributions of many diadromous and other migratory fish species, yet very few data exist that quantify this ability. We provide a detailed analysis of sprint swimming ability of six migratory fish species (American shad (Alosa sapidissima), alewife (Alosa pseudoharengus), blueback herring (Alosa aestivalis), striped bass (Morone saxatilis), walleye (Stizostedion vitreum), and white sucker (Catostomus commersoni)) against controlled water velocities of 1.5–4.5 m·s–1 in a large, open-channel flume. Performance was strictly voluntary: no coercive incentives were used to motivate fish to sprint. We used these data to generate models of maximum distance traversed, taking into account effects of flow velocity, body length, and temperature. Although the maximum distance traversed decreased with increasing velocity, the magnitude of this effect varied among species. Other covariate effects were likewise variable, with divergent effects of temperature and nonuniform length effects. These effects do not account for all of the variability in performance, however, and behavioral traits may account for observed interspecific differences. We propose the models be used to develop criteria for fish passage structures, culverts, and breached dams.

Potential impacts of oil production platforms and their function as fish aggregating devices on the biology of highly migratory fish species

2020 ◽  
Vol 30 (3) ◽  
pp. 405-422
Author(s):  
Derke J. G. Snodgrass ◽  
Eric S. Orbesen ◽  
John F. Walter ◽  
John P. Hoolihan ◽  
Craig A. Brown
Keyword(s):  
Fish Species ◽  
Oil Production ◽  
Migratory Fish ◽  
Fish Aggregating Devices

Evaluation of fatty-acid composition of five migratory fish species captured from the Beymelek Lagoon (Turkey) at the end of the feeding period

2011 ◽  
Vol 46 (6) ◽  
pp. 946-949 ◽  
Author(s):  
Kazim Uysal ◽  
Yilmaz Emre ◽  
Halil Yilmaz ◽  
Muhammet Donmez ◽  
A. Kemal Seckin ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Fish Species ◽  
Migratory Fish ◽  
Feeding Period

Crossing Invisible Boundaries: the Effectiveness of the Langebaan Lagoon Marine Protected Area as a Harvest Refuge for a Migratory Fish Species in South Africa

2009 ◽  
Vol 23 (3) ◽  
pp. 653-661 ◽  
Author(s):  
SVEN E. KERWATH ◽  
EVA B. THORSTAD ◽  
TOR F. NAESJE ◽  
PAUL D. COWLEY ◽  
FINN ØKLAND ◽  
...  
Keyword(s):  
South Africa ◽  
Fish Species ◽  
Protected Area ◽  
Marine Protected Area ◽  
Migratory Fish

scholarly journals Barrier mitigation measures trigger the rapid recovery of genetic connectivity in five freshwater fish species

2021 ◽  
Author(s):  
Jérôme G. Prunier ◽  
Géraldine Loot ◽  
Charlotte Veyssiere ◽  
Nicolas Poulet ◽  
Simon Blanchet
Keyword(s):  
Fish Species ◽  
Complete Recovery ◽  
Mitigation Measures ◽  
Genetic Connectivity ◽  
Migratory Fish ◽  
Proof Of Concept ◽  
Molecular Tools ◽  
Freshwater Biodiversity ◽  
Barrier Removal ◽  
First Time

ABSTRACTRivers are heavily fragmented by man-made instream barriers such as dams and weirs. This hyper-fragmentation is a major threat to freshwater biodiversity and restoration policies are now adopted worldwide to mitigate these impacts. However, there is surprisingly little feedback on the efficiency of barrier mitigation measures in restoring riverine connectivity, notably for non-migratory fish species. Here, we implemented a “before-after genetic monitoring” of the restoration of 11 weirs in France using a dedicated genetic index of fragmentation (the FINDEX), with a focus on five fish species from two genera. We found that most obstacles actually had a significant impact on connectivity before restoration, especially the highest and steepest ones, with an overall barrier effect of about 51% of the maximal theoretical impact. Most importantly, we demonstrated for the first time that mitigation measures such as dam removal or fish pass creation significantly and rapidly improved connectivity, with –for some barriers-a complete recovery of the genetic connectivity in less than twelve months. Our study provides a unique and strong proof-of-concept that barrier removal is an efficient strategy to restore riverine connectivity and that molecular tools can provide accurate measures of restoration efficiency within a few months.Graphical Abstract

scholarly journals Іхтіофауна Тилігульського лиману на початку XXI століття

2017 ◽  
Vol 7 (4) ◽  
pp. 35-45
Author(s):  
S. Snigirov ◽  
S. Bushuev ◽  
G. Chernikov ◽  
O. Kovtun ◽  
V. Zamorov ◽  
...  
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Estuarine Water ◽  
Migratory Fish ◽  
Grey Mullet ◽  
Mediterranean Species ◽  
Current State ◽  
Scientific Background ◽  
European Flounder

<p>The aim of our research was to study the current state of ichthyofauna of the Tiligulskiy Estuary and to provide the scientific background to improve the functioning of the fishing connecting channel. The modern ichthyofauna of the Tiligulskiy lyman includes 24 fish species from 18 genera and 11 families. Only 9 of them (Mediterranean species) are widespread in the estuary at present time. We suggested that the dynamics of species composition depends of the salinity of estuarine water. The basis of modern catches consists of Sand smelt (up to 90%) and gobies. The catch of mullet (predominantly Golden grey mullet and Red-lip mullet), anchovy, and European flounder is rather insignificant. The increase of migratory fish species catches is possible when operating fishing connecting channel would be equipped in accordance with fishery recommendations.</p>

Habitat use by juvenile salmon, other migratory fish, and resident fish species underscores the importance of estuarine habitat mosaics

2019 ◽  
Vol 625 ◽  
pp. 145-162 ◽  
Author(s):  
L Chalifour ◽  
DC Scott ◽  
M MacDuffee ◽  
JC Iacarella ◽  
TG Martin ◽  
...  
Keyword(s):  
Habitat Use ◽  
Fish Species ◽  
Juvenile Salmon ◽  
Migratory Fish ◽  
Estuarine Habitat ◽  
Resident Fish ◽  
Habitat Mosaics
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