Results 41 to 50 of about 6,704 (187)

Biological invasions disrupt the relationship between size spectrum and trophic interactions in freshwater fish communities

Journal of Animal Ecology, EarlyView.
Our study shows that non‐native species alter the relationship between the size‐spectrum slope and the predator–prey mass ratio (PPMR) in freshwater fish communities by occupying distinct trophic niches. Abstract The size spectrum, which describes the relationship between abundance (or biomass) and body size, is an ataxic approach that can provide ...
Valentin Marin, Gaël Grenouillet, Ignasi Arranz, Julien Cucherousset   +3 more
wiley   +1 more source

Stable species boundaries despite ten million years of hybridization in tropical eels

Nature Communications, 2020
In the Indo-Pacific, multiple Anguilla eel species overlap in their spawning. Here, the authors sequence three Anguilla genomes and with genome-wide data of four more congeners, investigate contemporary hybridization, historical introgression, and the ...
Julia M. I. Barth, Chrysoula Gubili, Michael Matschiner, Ole K. Tørresen, Shun Watanabe, Bernd Egger, Yu-San Han, Eric Feunteun, Ruben Sommaruga, Robert Jehle, Robert Schabetsberger   +10 more
doaj   +1 more source

Stigma, discrimination, and attitude towards the Chinese community in the USA and Canada during the outbreak of COVID-19

Social Determinants of Health, 2020
Introduction: The COVID-19 outbreak, declared a global pandemic by the WHO, raises some serious health, as well as discrimination concerns worldwide. This exploratory study outlines the knowledge, stigma, and discrimination towards the Chinese community ...
Adekunle Sanyaolu, Chuku Okorie, Aleksandra Marinkovic, Abu Abbasi, Jasmine Mangat, Sadaf Younis, Henry Chan, Urooj Jaferi   +7 more
doaj   +1 more source

Effect of Salinity Stress on Gut–Brain–Gonad Axis in the Red‐Eared Slider (Trachemys scripta elegans)

Integrative Zoology, EarlyView.
The increase in salinity leads to changes in the gut microbiota and metabolites of Trachemys scripta elegans, affecting the synthesis and secretion of neurotransmitters or precursors, which can inhibit the secretion of reproductive hormones and affect the self‐renewal and differentiation process of spermatogonial stem cells.
Qiongyu Zhang, Na Li, Xue Tang, Hanru Chen, Meiling Hong, Li Ding   +5 more
wiley   +1 more source

A comparison of European eel Anguilla anguilla eDNA concentrations to fyke net catches in five Irish lakes

Environmental DNA, 2020
The European eel, Anguilla anguilla, is classified as critically endangered by the IUCN. To protect what remains of the European eel population, accurate monitoring methods for this species are important.
Laura Weldon, Ciara O’Leary, Mark Steer, Lyn Newton, Heather Macdonald, Stephanie L. Sargeant   +5 more
doaj   +1 more source

Genome Expansion of ZPB1(a) and ZPC1(a) in Basal Species or Liver Expression of ZPB1a and ZPC1aa in Advanced Species, Two Different Strategies to Ensure Sufficient ZP Synthesis in Teleosts

Integrative Zoology, EarlyView.
We found that teleosts employed two different strategies to ensure sufficient ZP (zona pellucida) synthesis: expansion of ZPB1(a) and ZPC1(a) in basal species or liver expression of ZPB1a and ZPC1aa in advanced species. The N‐terminus of expanded ZPB1(a) or ZPC1(a) and liver‐expressed ZPB1a contains repeated units or low‐complexity regions to form ...
Tian Gao, Suying Ma, Shiyi Zhang, Fan Bai, Lingyao Gan, Wenjing Tao, Feilong Wang, Deshou Wang, Lina Sun   +8 more
wiley   +1 more source

Using Long‐Term Monitoring Data to Assess Temporal Patterns in Fish Community Assemblages in Florida Lakes

Fisheries Management and Ecology, EarlyView.
ABSTRACT In an effort to increase the relevancy of fish community data for management, we used fish community data to conduct a statewide assessment of Florida's freshwater fisheries resources and compare the relationships between environmental factors and freshwater fish communities over time.
Kimberly I. Bonvechio, Andrea Sylvia, Andrew K. Carlson   +2 more
wiley   +1 more source

Site Fidelity, Depth Preference and Vertical Movement Patterns of Lentic and Lotic European Catfish Silurus glanis

Fisheries Management and Ecology, EarlyView.
ABSTRACT To study variables that may trigger the dispersion of the currently expanding European catfish in its native distribution limits, 42 individuals were captured from Upper Lake Constance (lentic) and 42 from two streaming tributaries (lotic), fitted with pressure and temperature loggers, and released at the site of capture (control: lotic or ...
Albert Ros, Jan Baer, Matthias Fromherz, Juergen Geist, Alexander Brinker   +4 more
wiley   +1 more source

Pseudodactylogyrosis in Anguilla anguilla (Actinopterygii: Anguilliformes: Anguillidae): change of control strategies due to occurrence of anthelmintic resistance [PDF]

Acta Ichthyologica et Piscatoria, 2011
Background. The European eel, Anguilla anguilla (L.), is considered an endangered species and a series of protective measures have been implemented within the European community in order to enhance natural stocks.
K. Buchmann, P.W. Kania, L. Neumann, G. De’ Besi   +3 more
doaj   +3 more sources

Examining the Impact of Derelict Pots on Blue Crab (Callinectes sapidus) Catch and Harvest Within a Recreational Fishery

Fisheries Management and Ecology, EarlyView.
ABSTRACT Derelict fishing gear can negatively affect marine ecosystems through mortality in coastal environments. This study explored the impact of derelict and active crab pots on recreational blue crab (Callinectes sapidus) catch rates and landings in a Mid‐Atlantic estuary by deploying experimental pots in four habitat strata within three sections ...
Randy J. Feris Serrano, Jennifer E. Repp, Kaylin M. Regan, Arthur C. Trembanis, Matthew J. Oliver, Edward A. Hale   +5 more
wiley   +1 more source