Results 11 to 20 of about 970 (155)

Os peixes de um lago de várzea da Amazônia Central (Lago Janauacá, Rio Solimões) e suas relações com os crustáceos ectoparasitas (Branchiura: Argulidae) [PDF]

open access: yesActa Amazonica, 1984
Durante um período de treze meses, de março de 1979 a março de 1980, excursões semanais foram realizadas ao Janauacá, um complexo de, l.agos de várzea da Amazônia Central. Miltrezentos e trinta e cinco peixesde cinco ordens, dezenove famílias e.
José Celso de Oliveira Malta
doaj   +3 more sources

The First Record of Argulus Foliacesus (Crustacea: Branchiura) Infesta­tion on Lionhead Goldfish (Carassius Auratus) in Iran [PDF]

open access: yesIranian Journal of Parasitology, 2010
Argulus foliaceus (Crustacea: Branchiura), or the fish louse, is an ectoparasite of the skin or gill of the fresh water fish species. Clinical signs in infected fish include scratching on aquarium walls, erratic swimming, and poor growth.
AH Shahmoradi, Y Chelongar, V Noaman
doaj   +3 more sources

Parasitism by argulids (Crustacea: Branchiura) in piranhas (Osteichthyes: Serrasalmidae) captured in the Caiçara bays, upper Paraguay River, Pantanal, Mato Grosso state, Brazil

open access: yesNeotropical Ichthyology
In this study, 446 fishes were analyzed: 190 Pygocentrus nattereri, 193 Serrasalmus maculatus, and 63 S. marginatus.They were captured in two bays, upper and lower Caiçara, in the upper Paraguay River basin, during one hydrological cycle from May 2008 to
Márcio Fontana   +3 more
doaj   +1 more source

Spatial distribution, host specificity, and affinity of Branchiura for surface and macrohabitat types in fish species from the Brazilian Amazon [PDF]

open access: yesAnais da Academia Brasileira de Ciências
This study investigated the spatial distribution, parasite interactions, and affinities of Branchiura parasites according to macrohabitat and surface type on fish from the Araguari River, Amapá State, in the Brazilian Amazon.
DRIELLY O. FERREIRA   +4 more
doaj   +3 more sources

Impacts of Land Use and Water Quality on Macroinvertebrate Diversity Under Human Disturbance in the Lake Chaohu Basin, China. [PDF]

open access: yesEcol Evol
Our study revealed that human activities drive changes in macroinvertebrate diversity through the combined effects of land use and water quality. The results showed that sensitive taxa (Semisulcospira cancelata) dominated in low disturbance areas, Bellamya (Bellamya aeruginosa) and Alocinma (Alocinma longicornis) were predominant in moderate ...
Chen B, Ji Q, Yao Y, Zhang Z, Lin Y.
europepmc   +2 more sources

Letter to the Editor on Parker et al. 2022 "Development of Fluoride Protective Values for Aquatic Life Using Empirical Bioavailability Models". [PDF]

open access: yesEnviron Toxicol Chem, 2022
Environmental Toxicology and Chemistry, Volume 41, Issue 9, Page 2045-2047, September 2022.
Camargo JA.
europepmc   +2 more sources

Common Food Sources for Macrobenthic Communities in Different Bottom Covers: Submerged Macrophytes and Benthic Cyanobacteria in a Japanese Temperate Lake. [PDF]

open access: yesEcol Evol
A variety of macrobenthic invertebrates were found in the benthic cyanobacterial and the macrophyte zones in the southern basin of Lake Biwa. Their compositions were clearly different between the zones, but relied on common food sources. ABSTRACT Macrobenthic communities in a lake are affected by the type of bottom cover such as macrophytes or algae ...
Takamura K, Kondo NI, Nakajima N.
europepmc   +2 more sources

From subsidies to stressors: Positively skewed ecological gradients alter biological responses to nutrients in streams. [PDF]

open access: yesEcol Appl
Abstract Subsidy–stress gradients offer a useful framework for understanding ecological responses to perturbation and may help inform ecological metrics in highly modified systems. Historic, region‐wide shifts from bottomland hardwood forest to row crop agriculture can cause positively skewed impact gradients in alluvial plain ecoregions, resulting in ...
DeVilbiss SE, Taylor JM, Hicks MB.
europepmc   +2 more sources

Investigation on parasitic infestation of Labeo rohita (Hamilton, 1822) in the south-western region of Bangladesh. [PDF]

open access: yesVet Med Sci
Over the study, 180 L. rohita specimens were examined,, revealing the presence of six distinct parasite species, consisting of endoparasites. Through microscopic examination, a total of 323 parasites were investigated, categories including Cestode, Nematode, Acanthocephala, Trematode and Digenia, predominantly residing in the intestines and liver of L.
Ahammad B   +4 more
europepmc   +2 more sources

Influence of environmental variables on macroinvertebrate community structure in Lianhuan Lake. [PDF]

open access: yesEcol Evol, 2022
Abstract The structural characteristics of the macroinvertebrate community can effectively reflect the health status of lake ecosystems and the quality of the lake ecological environment. It is therefore important to identify the limiting factors of macroinvertebrate community structure for the maintenance of lake ecosystem health.
Dou Q   +7 more
europepmc   +2 more sources

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