Results 11 to 20 of about 476 (125)

Small fish, large variation: Morphological diversity of Weberian apparatus in Noturus catfishes and ecological implications. [PDF]

Anat Rec (Hoboken)
Abstract The Weberian apparatus is a hearing specialization unique to the otophysan fishes, and an unexpected degree of morphological variation exists in species of the Noturus catfishes. Our aim in this study is to investigate relationships between morphological variations and ecology that may drive this variation.
Hoeflich JC, Liu J.
europepmc   +2 more sources

Diplostomum-Induced Sac Formation in Lenses of Ameiurus Bullheads: A Host Defence Response? [PDF]

J Fish Dis
ABSTRACT Trematodes of the genus Diplostomum (Diplostomidae) are widely distributed and significant fish pathogens known for causing a range of negative effects. Any mechanism that protects the host from the parasite thus represents an evolutionary advantage.
Ondračková M, Valigurová A, Hodová I, Bartáková V, Tkachenko MY, Janáč M, Vetešník L.   +6 more
europepmc   +2 more sources

Fish Diversity and Environmental Relationships in the Jinsha River During the Initial Phases of the 10-Year Fishing Ban: A Metabarcoding Approach. [PDF]

Ecol Evol
Using eDNA metabarcoding, we identified 61 fish species in the Jinsha river during the early stage of the Yangtze river fishing ban. Fish diversity showed seasonal and regional variation, with Cypriniformes as the dominant group. Key environmental factors like temperature and dissolved oxygen were closely linked to diversity patterns.
Zhao Y, Wang Z, Hu F, Guo Z, Gong J, Li X, Yang D, Zhu T.   +7 more
europepmc   +2 more sources

Invasive predatory fish occupies highest trophic position leading to expansion of isotopic niches in a riverine food web. [PDF]

Ecology
Abstract Invasive species are drivers of ecological change with the potential to reshape the structure and function of terrestrial and aquatic ecosystems. The invasive flathead catfish (Pylodictis olivaris) is an opportunistic predator that has established a rapidly growing population in the Susquehanna River, Pennsylvania, USA, since they were first ...
Hodgson OC, Stark S, Schall MK, Smith GD, Smalling KL, Wagner T.   +5 more
europepmc   +2 more sources

Winter predatory efficiency and periodicity of the non-native brown bullhead Ameiurus nebulosus. [PDF]

J Fish Biol
Abstract Winter is a challenge for fish in temperate regions as it is likely to create a bottleneck for small‐bodied fish due to starvation. Resource consumption could contribute substantially to the overwinter survival of fish. Nevertheless, fish feeding activity and related impacts at low temperatures are understudied.
Fritsch A, Staněk P, Buřič M, Kouba A, Veselý L, Balzani P.   +5 more
europepmc   +2 more sources

A Global Account of Established Non-Native Fish Species. [PDF]

Glob Chang Biol
This study compiles the most complete global database of non‐native fish species that have successfully established themselves in new freshwater and marine environments. It documents 1535 species across 193 countries, identifies their main introduction routes—such as aquarium trade, aquaculture, and artificial waterways—and highlights that many ...
Haubrock PJ, Novello M, Abreo NA, Błońska D, Sampaio Franco AC, Soto I, Castaldelli G, Katsanevakis S, Kouba A, Balzani P, Kurtul I, Tarkan AS, Briski E, Britton R.   +13 more
europepmc   +2 more sources

Identifying Recruitment Sources Across Trophic Levels in a Large River Food Web. [PDF]

Ecol Evol
We quantified the recruitment sources of predators and their consumed prey across space and time in the Upper Mississippi River. Prey recruited more often than predators from tributaries to the mainstem river, indicating a direct (predators themselves) and indirect (consumed prey) use of tributaries to sustain predator populations.
Valentine SA, Bouska KL, Whitledge GW.
europepmc   +2 more sources

Environmental DNA Reveals the Fish Community Structure Exhibited Instability and Trend of Miniaturization in the Xijiang River Basin of the Guizhou. [PDF]

Ecol Evol
Monitoring of fish communities is of great significance for the management and sustainability of river ecosystems. Environmental DNA (eDNA) metabarcoding technology has been demonstrated to be a highly sensitive biomonitoring tool. Nevertheless, it has seldom been tested in mountainous rivers within the geographically complex Karst region.
Ma X, Huang F, Zhang R, Liu T, Zhang T, Zeng P.   +5 more
europepmc   +2 more sources

A Time-Calibrated Mitogenome Phylogeny of Catfish (Teleostei: Siluriformes).

PLoS ONE, 2016
A very significant part of the world's freshwater ichthyofauna is represented by ancient, exceptionally diverse and cosmopolitan ray-finned teleosts of the order Siluriformes.
Ilias Kappas, Spiros Vittas, Chrysoula N Pantzartzi, Elena Drosopoulou, Zacharias G Scouras   +4 more
doaj   +1 more source

Native and non-native species response to the colonization and subsequent suppression of northern pike Esox lucius. [PDF]

J Fish Biol
Abstract The expansion of northern Pike Esox lucius outside its native range into the western states of North America is a growing problem due to their negative effects on fish communities. Illegally introduced E. lucius were first detected in Box Canyon Reservoir in northeast Washington in 2004. By 2010, the E.
Mayer K, Garrett DL, Haukenes AH.
europepmc   +2 more sources