Major threats to European freshwater fish species

AbstractAlthough small benthic freshwater fish species are an important biological component of fish assemblages and free instream movement is indispensable for their survival, they are often neglected in fish pass performance studies. In this study, a capture-mark-recapture approach was used to assess whether small bottom-dwelling species, including gudgeon (Gobio gobio), stone loach (Barbatula barbatula), spined loach (Cobitis taenia) and bullhead (Cottus gobio), were able to cross a pool-and-weir fish pass in a regulated lowland river. Some tagged individuals of stone loach (18%), gudgeon (7%) and spined loach (2%) managed to successfully ascend the fish pass under study, despite the fact that water velocity levels in the different overflows of the facility (between 0.55-1.22 m/s) exceeded the critical swimming speed of all three species. Although this suggests that a pool-and-weir fish pass is a able to facilitate upstream movement of some small benthic species in a regulated river, more detailed research incorporating advanced tagging and retrieving techniques is necessary.

Download Full-text

Length‐weight relationships of three freshwater fish species from the Nandu River and Changhua River in Hainan Island, China

Journal of Applied Ichthyology ◽

10.1111/jai.13801 ◽

2018 ◽

Vol 35 (2) ◽

pp. 580-581 ◽

Cited By ~ 1

Author(s):

Xingwei Cai ◽

Gaojun Li ◽

Fangyuan Li ◽

Haigui Wang ◽

Ya Zhang ◽

...

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

Hainan Island ◽

Freshwater Fish Species

Download Full-text

Classification of Freshwater Fish Species of the Northeastern United States for Use in the Development of Indices of Biological Integrity, with Regional Applications

Assessing the Sustainability and Biological Integrity of Water Resources Using Fish Communities ◽

10.1201/9781003068013-15 ◽

2020 ◽

pp. 301-337

Author(s):

David B. Halliwell ◽

Richard W. Langdon ◽

Robert A. Daniels ◽

James P. Kurtenbach ◽

Richard A. Jacobson

Keyword(s):

United States ◽

Freshwater Fish ◽

Fish Species ◽

Biological Integrity ◽

Northeastern United States ◽

Freshwater Fish Species

Download Full-text

Estimating thermal response metrics for North American freshwater fish using Bayesian phylogenetic regression

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2017-0278 ◽

2018 ◽

Vol 75 (11) ◽

pp. 1878-1885 ◽

Cited By ~ 5

Author(s):

Sarah S. Hasnain ◽

Michael D. Escobar ◽

Brian J. Shuter

Keyword(s):

Freshwater Fish ◽

Fish Species ◽

North American ◽

Thermal Response ◽

Estimation Accuracy ◽

Freshwater Fish Species ◽

Optimum Growth Temperature ◽

North American Freshwater ◽

North American Freshwater Fish ◽

Phylogenetic Regression

Physiological performance in fish peaks within a well-defined range of temperatures, which is distinct for each species. Species-specific thermal responses for growth, survival, and reproduction are most commonly quantified directly through laboratory experiment or field observation, with a focus on six specific metrics: optimum growth temperature and final temperature preferendum (growth), upper incipient lethal temperature and critical thermal maximum (survival), and optimum spawning temperature and optimum egg development temperature (reproduction). These values remain unknown for many North American freshwater fish species. In this paper, we present a new statistical method (Bayesian phylogenetic regression) that uses relationships between these metrics and phenetic relatedness to estimate unknown metric values. The reliability of these estimates was compared with those derived from models incorporating taxonomic family and models without any taxonomic information. Overall, incorporating taxonomic family relatedness improved estimation accuracy across all metrics. For Salmonidae and Cyprinidae, estimates derived from Bayesian phylogenetic regression typically had the highest expected reliability. We used our methods to generate 274 estimates of unknown metric values for over 100 North American freshwater fish species.

Download Full-text