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You searched for: Subject community structure Remove constraint Subject: community structure Subject term cages Remove constraint Subject term: cages
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1. Cage transplant experiment shows weak transport effect on relative abundance of fish community composition as revealed by eDNA metabarcoding

Author:
M. Laporte; C.S. Berger; E. García-Machado; G. Côté; O. Morissette; L. Bernatchez
Source:
Ecological indicators 2022 v.137 pp. 108785
ISSN:
1470-160X
Subject:
DNA barcoding; Salmo trutta; biodiversity; cages; cluster analysis; community structure; decline; environmental DNA; fish communities; freshwater fish; rivers; transportation; Canada; Saint Lawrence River
Abstract:
... Protection of freshwater fish diversity is a global conservation priority in face of its alarming decline in the last decades. A crucial step to protect freshwater fish diversity is the production of prompt and precise evaluation of community composition and spatial distribution. Metabarcoding of environmental DNA (eDNA metabarcoding) generally surpasses traditional methods for documenting diversi ...
DOI:
10.1016/j.ecolind.2022.108785

2. Influence of laying hen-systems and ecologic variables on mites of medical and veterinary importance

Author:
Aline Marjana Pavan; Matheus Schussler; Flávio Renato Silva; Noeli Juarez Ferla; Liana Johann; Guilherme Liberato da Silva
Source:
Veterinary parasitology 2022 v.304 pp. 109682
ISSN:
0304-4017
Subject:
Acotyledon; Cheyletus; Dermanyssus gallinae; Dermatophagoides farinae; Glycyphagus; Megninia; Ornithonyssus sylviarum; Tyrophagus putrescentiae; cages; community structure; ectoparasites; eggs; functional diversity; models; neck; organic matter; oviposition; poultry; poultry industry; poultry production; relative humidity; taxonomy; temperature; veterinary parasitology; world markets
Abstract:
... The search for improvements in the poultry production chain and for increased egg productivity have grown significantly. However, intensive production with or by using of confinement systems negatively affect the welfare of animals and is favoring the appearance of harmful ectoparasites in production. Due to differences in the existing management systems, (e.g. Californian and cage-free systems) a ...
DOI:
10.1016/j.vetpar.2022.109682

3. A comparison of two seawater adaptation strategies for Atlantic salmon post-smolt (Salmo salar) grown in recirculating aquaculture systems (RAS): Nitrification, water and gut microbiota, and performance of fish

Author:
Ragnhild O. Fossmark; Kari J.K. Attramadal; Kristian Nordøy; Stein W. Østerhus; Olav Vadstein
Source:
Aquaculture 2021 v.532 pp. 735973
ISSN:
0044-8486
Subject:
Salmo salar; acclimation; aquaculture tanks; bacterial communities; biofilm; biofilters; brackish water; cages; community structure; environmental factors; farmers; feces; fish culture; fish production; freshwater; intestinal microorganisms; mortality; nitrification; nitrifying bacteria; parr; recirculating aquaculture systems; ribosomal RNA; salinity; seawater; sequence analysis; stochastic processes; water treatment
Abstract:
... The land-based production phase in Norwegian Atlantic salmon farming has the past years been extended to include post-smolt for an increasing number of farmers. Post-smolt production can involve introduction of brackish/seawater to a recirculating aquaculture system (RAS) that is acclimatized to freshwater for the earlier stages of salmon production. A change from freshwater to seawater shifts the ...
DOI:
10.1016/j.aquaculture.2020.735973

4. Dietary Contamination with a Neonicotinoid (Clothianidin) Gradient Triggers Specific Dysbiosis Signatures of Microbiota Activity along the Honeybee (Apis mellifera) Digestive Tract

Author:
Sarah El Khoury; Jeff Gauthier; Sidki Bouslama; Bachar Cheaib; Pierre Giovenazzo; Nicolas Derome
Source:
Microorganisms 2021 v.9 no.11 pp. -
ISSN:
2076-2607
Subject:
Apis mellifera; biomarkers; cages; clothianidin; community structure; death; digestive tract; dysbiosis; food intake; honey bees; ileum; intestinal microorganisms; microbial colonization; midgut; mortality; rectum; sucrose; syrups; transcription (genetics); xenobiotics
Abstract:
... Pesticides are increasing honeybee (Apis mellifera) death rates globally. Clothianidin neonicotinoid appears to impair the microbe–immunity axis. We conducted cage experiments on newly emerged bees that were 4–6 days old and used a 16S rRNA metataxonomic approach to measure the impact of three sublethal clothianidin concentrations (0.1, 1 and 10 ppb) on survival, sucrose syrup consumption and gut ...
DOI:
10.3390/microorganisms9112283

5. Functional and taxonomic diversity of grasshoppers differentially shape above‐ and below‐ground communities and their function

Author:
Jane M. Lucas; Jayne Jonas; Angela N. Laws; David H. Branson; Steven C. Pennings; Chelse M. Prather; Michael S. Strickland
Source:
Functional ecology 2021 v.35 no.1 pp. 167-180
ISSN:
0269-8463
Subject:
Orthoptera; aboveground biomass; bacterial communities; cages; community structure; diet; ecosystems; fungal communities; grasshoppers; grasslands; herbivores; information; microbial biomass; nitrogen fertilizers; nutrient availability; phytomass; plant communities; prediction; shape; soil microorganisms; soil nutrients; soil pH; species diversity; taxonomy
Abstract:
... Herbivores are important drivers in both above‐ and below‐ground ecosystems. Despite their importance, studies of herbivores often focus on the effects of individual species, potentially missing the effects of herbivore diversity. Here we examine how orthopteran herbivore species and functional (i.e. diet) diversity interact with nutrient availability to shape above‐ and below‐ground ecosystems. W ...
DOI:
10.1111/1365-2435.13682

6. Gut Microbiota of Five Sympatrically Farmed Marine Fish Species in the Aegean Sea

Author:
Eleni Nikouli; Alexandra Meziti; Evangelia Smeti; Efthimia Antonopoulou; Eleni Mente; Konstantinos Ar. Kormas
Source:
Microbial ecology 2021 v.81 no.2 pp. 460-470
ISSN:
0095-3628
Subject:
adults; bacterial communities; cages; coasts; community structure; farmed fish; intestinal microorganisms; marine fish; midgut; Aegean Sea; Greece; Mediterranean Sea
Abstract:
... In this study, we hypothesized that sympatrically grown farmed fish, i.e. fish which experience similar environmental conditions and nutritionally similar diets, would have more convergent gut microbiota. Using a “common garden” approach, we identified the core microbiota and bacterial community structure differences between five fish species farmed in the same aquaculture site on the west coast o ...
DOI:
10.1007/s00248-020-01580-z

7. Postmortem submersion interval (PMSI) estimation from the microbiome of Sus scrofa bone in a freshwater river

Author:
Claire Cartozzo; Tal Simmons; Jenise Swall; Baneshwar Singh
Source:
Forensic science international 2021 v.318 pp. 110480
ISSN:
0379-0738
Subject:
Clostridia; Holophagae; Sus scrofa; bacterial communities; cages; community structure; forensic sciences; freshwater; gamma-Proteobacteria; microbiome; phylogeny; postmortem changes; prediction; rivers; swine
Abstract:
... Due to inherent differences between terrestrial and aquatic systems, methods for estimating the postmortem interval (PMI) are not directly applicable to remains recovered from water. Recent studies have explored the use of microbial succession for estimating the postmortem submersion interval (PMSI); however, a non-disturbed, highly replicated and long-term aquatic decomposition study in a freshwa ...
DOI:
10.1016/j.forsciint.2020.110480

8. Calcareous defence structures of prey mediate the effects of predation and biotic resistance towards the tropics

Author:
Gustavo M. Dias; Edson A. Vieira; Lueji Pestana; Antonio C. Marques; Simon Karythis; Stuart R. Jenkins; Katherine Griffith
Source:
Diversity & distributions 2020 v.26 no.9 pp. 1198-1210
ISSN:
1366-9516
Subject:
animals; biocenosis; cages; community structure; ecological invasion; habitats; introduced species; invasive species; latitude; predation; predators; species diversity; subtropics; temperate zones; tropics; Angola; Atlantic Ocean; Brazil; Wales
Abstract:
... AIMS: The importance of biotic interactions in creating and maintaining diversity is expected to increase towards low latitudes. However, the way in which predation affects diversity can depend on how predators mediate competitive interactions and also on defensive traits of prey. Here, we assessed the role of physical defences of prey to escape predation and how the importance of predation on com ...
DOI:
10.1111/ddi.13020

9. Human-engineered hydrodynamic regimes as a driver of cryptic microinvertebrate assemblages on urban artificial shorelines

Author:
Eliza C. Heery; Rachel K.E. Oh; Daisuke Taira; Dillen Ng; C.K. Chim; Rania S. Hartanto; Amanda R. Hsiung; Tiffany M.F. Chai; Lynette H.L. Loke; Hannah H.J. Yeo; Peter A. Todd
Source:
Science of the total environment 2020 v.725 pp. 138348
ISSN:
0048-9697
Subject:
Copepoda; Gastropoda; benthic organisms; cages; community structure; ecological footprint; epiphytes; food webs; grazing; hydrodynamics; littoral zone; macroinvertebrates; marine ecosystems; models; population density; sediment deposition; shorelines; turbidity; turf algae; urban areas; water power; Singapore
Abstract:
... Urban shorelines undergo substantial hydrodynamic changes as a result of coastal engineering and shoreline armouring that can alter sedimentation, turbidity, and other factors. These changes often coincide with major shifts in the composition and distribution of marine biota, however, rarely are hydrodynamic-mediated factors confirmed experimentally as the mechanism underpinning these shifts. This ...
DOI:
10.1016/j.scitotenv.2020.138348

10. Macropredators as shapers of invaded fouling communities in a cold temperate port

Author:
Clara Belen Giachetti; Nicolás Battini; Alejandro Bortolus; Marcos Tatián; Evangelina Schwindt
Source:
Journal of experimental marine biology and ecology 2019 v.518 pp. 151177
ISSN:
0022-0981
Subject:
Ascidiacea; Echinoidea; Gastropoda; cages; cold; community structure; crabs; ecological invasion; fiberglass; fouling; habitats; introduced species; latitude; predation; predators; shipping; species diversity; temperate zones
Abstract:
... Ports are vulnerable to biological invasions because of the high shipping exchange and the abundance and diversity of artificial structures. These artificial environments provide new habitats for fouling communities, commonly hosting a large number of exotic species. The colonization of artificial structures is influenced by large and small scale processes, such as differences in recruitment time ...
DOI:
10.1016/j.jembe.2019.151177

11. Nitrogen recycling in coupled green and brown food webs: Weak effects of herbivory and detritivory when nitrogen passes through soil

Author:
Robert W. Buchkowski; Oswald J. Schmitz; Mark A. Bradford
Source:
journal of ecology 2019 v.107 no.2 pp. 963-976
ISSN:
0022-0477
Subject:
Isopoda; animals; biogeochemical cycles; cages; community structure; detritivores; dynamic models; fertilizer application; field experimentation; food webs; grasshoppers; greenhouses; herbivores; isotope labeling; microbial biomass; nitrogen; nitrogen fertilizers; phytomass; plant communities; plant growth; plant litter; plant nitrogen content; stable isotopes; uncertainty
Abstract:
... The study of coupled green and brown food webs has improved our ability to understand how nutrient cycling and plant communities respond to perturbations. Yet, it is still difficult to predict how rapidly and consistently changes in one food web propagate to the other. An area of particular uncertainty is the response of plants to the changes in leaf litter nitrogen release caused by herbivores an ...
DOI:
10.1111/1365-2745.13079

12. Reducing allochthonous resources in a subarctic grassland alters arthropod food webs via predator diet and density

Author:
David Hoekman; Matthew A. McCary; Jamin Dreyer; Claudio Gratton
Source:
Ecosphere 2019 v.10 no.2 pp. e02593
ISSN:
2150-8925
Subject:
Aphidoidea; Collembola; Lycosidae; Opiliones; aquatic insects; arthropod communities; cages; carbon; community structure; detritivores; diet; food webs; freshwater; grasslands; herbivores; lakes; midges; mites; omnivores; predators; stable isotopes; subsidies; terrestrial ecosystems; Iceland
Abstract:
... Emergent aquatic insects can be major conduits of resources moving from freshwater to adjacent terrestrial ecosystems. These allochthonous resources can influence the structure and function of adjacent ecosystems, yet their effect on arthropod consumer populations remains largely unknown. In this study, we investigated how flying adult midges influence terrestrial arthropod food webs in subarctic ...
DOI:
10.1002/ecs2.2593

13. Removal of intertidal grazers by human harvesting leads to alteration of species interactions, community structure and resilience to climate change

Author:
Ana Chaverra; Evie Wieters; Andy Foggo; Antony M. Knights
Source:
Marine environmental research 2019 v.146 pp. 57-65
ISSN:
0141-1136
Subject:
bleaching; body size; cages; climate change; community structure; environmental factors; growth and development; harvesting; humans; littoral zone; macroalgae; photosynthesis; population growth; stress response; trophic relationships
Abstract:
... Extreme fluctuations in abiotic conditions can induce a biological stress response (e.g. bleaching) detrimental to an organism's health. In some instances, organisms can recover if conditions are alleviated, such as through co-occurrence with other species that confer protection. Biodiverse, multitrophic communities are increasingly recognised as important promoters of species persistence and resi ...
DOI:
10.1016/j.marenvres.2019.03.003

14. Analyses of Aerosol Concentrations and Bacterial Community Structures for Closed Cage Broiler Houses at Different Broiler Growth Stages in Winter

Author:
Linlin Jiang; Jianlong Zhang; Jinxiu Tang; Meng Li; Xiaoyu Zhao; Hongwei Zhu; Xin Yu; Youzhi Li; Tao Feng; Xingxiao Zhang
Source:
Journal of food protection 2018 v.81 no.9 pp. 1557-1564
ISSN:
0362-028X
Subject:
Escherichia; Firmicutes; Shigella; aerosols; air quality; bacterial communities; cages; community structure; developmental stages; high-throughput nucleotide sequencing; microorganisms; phylotype; poultry housing; quality control; ribosomal DNA; secondary infection; winter
Abstract:
... The aim of the present study was to analyze the aerosol concentrations and microbial community structures in closed cage broiler houses at different broiler growth stages to assess the dynamic pattern of microbial aerosols in closed cage systems. Our results revealed that the total concentration of bacterial aerosols gradually increased during the growth cycle of broilers. High-throughput sequenci ...
DOI:
10.4315/0362-028X.JFP-17-524

15. Assessment of grazing effects on phytobenthic community structure at shallow rocky reefs: An experimental field study in the North Aegean Sea

Author:
Konstantinos Tsirintanis; Maria Sini; Odysseas Doumas; Vasilis Trygonis; Stelios Katsanevakis
Source:
Journal of experimental marine biology and ecology 2018 v.503 pp. 31-40
ISSN:
0022-0981
Subject:
Arbacia lixula; Paracentrotus lividus; Sarpa salpa; biomass; cages; community structure; field experimentation; fish communities; foraging; grazing effects; habitats; herbivorous fish; macroalgae; monitoring; overgrazing; population density; reefs; species diversity; surveys; vegetation; Aegean Sea
Abstract:
... Overgrazing can deplete macroalgal communities and lead to reduction of habitat complexity and species diversity. To quantify the effects of sea urchin and fish herbivory on the rocky reefs of the North Aegean Sea, a six-month grazer exclusion experiment was conducted at the southeastern part of Lesvos Island at three rocky reef sites at depths between 1.0 and 4.7 m. The aim was to test whether (a ...
DOI:
10.1016/j.jembe.2018.01.008

16. Benthic macroinvertebrate community structure in Napoleon Gulf, Lake Victoria: effects of cage aquaculture in eutrophic lake

Author:
Robert Egessa; Gandhi Willy Pabire; Henry Ocaya
Source:
Environmental monitoring and assessment 2018 v.190 no.3 pp. 112
ISSN:
0167-6369
Subject:
Bellamya; Corbicula; Ephemeroptera; Malacostraca; Oligochaeta; Plecoptera; Trichoptera; arthropods; cage culture; cages; community structure; eutrophication; farm area; fauna; fish farms; lakes; long term effects; macroinvertebrates; molluscs; prediction; temporal variation; Lake Victoria
Abstract:
... An investigation was conducted on the macro-benthic fauna of the Napoleon Gulf in the northern part of Lake Victoria from March 2011 to December 2016 at the cage fish farm. The aim was to examine the likely impact of cage aquaculture on macro-benthic invertebrates. Cage aquaculture is now a common practice on Lake Victoria yet little is known about its long-term effect on macro-benthic faunal asse ...
DOI:
10.1007/s10661-018-6498-5

17. Effects of high ambient temperature on the community structure and composition of ileal microbiome of broilers

Author:
X.J. Wang; J.H. Feng; M.H. Zhang; X.M. Li; D.D. Ma; S.S. Chang
Source:
Poultry science 2018 v.97 no.6 pp. 2153-2158
ISSN:
0032-5791
Subject:
Azospirillum; Clostridium; Coprococcus; DNA; Streptococcus; ambient temperature; broiler chickens; cages; climate; community structure; discriminant analysis; heat stress; homeostasis; ileum; intestinal microorganisms; males; metabolism; microbiome; phylogeny; principal component analysis; ribosomal RNA; sequence analysis; species richness
Abstract:
... The intestinal microbiome has been shown to influence animal nutrient metabolism and immune homeostasis. The present study aimed to examine the effect of heat stress on the intestinal microbiome of broilers using pyrosequencing technologies. Ninety-six Arbor Acres broiler chicks were allocated to thermoneutral control (TC; 21 ± 1°C) and high ambient temperature (HT; 31 ± 1°C) groups (6 cages of 8 ...
DOI:
10.3382/ps/pey032

18. Environmental DNA metabarcoding of benthic bacterial communities indicates the benthic footprint of salmon aquaculture

Author:
Thorsten Stoeck; Larissa Frühe; Dominik Forster; Tristan Cordier; Catarina I.M. Martins; Jan Pawlowski
Source:
Marine pollution bulletin 2018 v.127 pp. 139-149
ISSN:
0025-326X
Subject:
DNA; DNA barcoding; bacterial communities; cages; community structure; cost effectiveness; delta-Proteobacteria; environmental monitoring; fauna; fish culture; gamma-Proteobacteria; salmon; sediments; species diversity; surveys; water pollution
Abstract:
... We evaluated benthic bacterial communities as bioindicators in environmental impact assessments of salmon aquaculture, a rapidly growing sector of seafood industry. Sediment samples (n=72) were collected from below salmon cages towards distant reference sites. Bacterial community profiles inferred from DNA metabarcodes were compared to reference data from standard macrofauna biomonitoring surveys ...
DOI:
10.1016/j.marpolbul.2017.11.065

19. Exclusion of invertebrates influences saprotrophic fungal community and wood decay rate in an experimental field study

Author:
Rannveig M. Jacobsen; Anne Sverdrup‐Thygeson; Håvard Kauserud; Sunil Mundra; Tone Birkemoe
Source:
Functional ecology 2018 v.32 no.11 pp. 2571-2582
ISSN:
0269-8463
Subject:
Coriolus versicolor; DNA barcoding; cages; community structure; dead wood; decay fungi; decayed wood; ecological function; field experimentation; forest ecosystems; fungal communities; invertebrates; landscapes; saprophytes; trees; trophic levels; wood density
Abstract:
... Decomposer communities perform an essential ecosystem function by recycling nutrients. However, the effect of higher trophic levels on microbial decomposer communities and rate of decomposition is poorly understood. We therefore conducted an exclusion experiment to test the effect of invertebrates on fungal decomposer communities in dead wood, repeated at 30 sites in two landscapes, and measured w ...
DOI:
10.1111/1365-2435.13196

20. Estimating the impact of consumers in ecological communities: Manual removals identify the complex role of individual consumers in the Gulf of Maine

Author:
Scott L. Morello; Ron J. Etter
Source:
Journal of experimental marine biology and ecology 2017 v.495 pp. 89-102
ISSN:
0022-0981
Subject:
Cirripedia; Gastropoda; Markov chain; Mytilus edulis; Ralfsia; Tautogolabrus adspersus; autumn; birds; cages; carnivores; community structure; environmental factors; hydrodynamics; littoral zone; models; mortality; mussels; predation; species diversity; spring; summer; winter; Gulf of Maine
Abstract:
... In intertidal communities, consumers (especially carnivorous gastropods) have historically been thought to exert strong top-down control on community composition by regulating competitively dominant mussels and barnacles. This paradigm was formulated based on wire mesh cage exclusion experiments, which have well-known artifacts such as altering hydrodynamics and excluding non-target, but potential ...
DOI:
10.1016/j.jembe.2017.06.005