scholarly journals Stable isotopes and gut contents indicate differential resource use by coexisting asp (Leuciscus aspius ) and pikeperch (Sander lucioperca )

2018 ◽  
Vol 27 (4) ◽  
pp. 1054-1065 ◽  
Author(s):  
Mojmír Vašek ◽  
Antti P. Eloranta ◽  
Ivana Vejříková ◽  
Petr Blabolil ◽  
Milan Říha ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Resource Use ◽  
Gut Contents ◽  
Sander Lucioperca

Diet of the pulmonate gastropod Onchidella nigricans in the intertidal rocky shore, New Zealand

2009 ◽  
Vol 59 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Andrea Alfaro
Keyword(s):  
Stable Isotopes ◽  
New Zealand ◽  
Algal Species ◽  
Rocky Intertidal ◽  
Coralline Algae ◽  
Gut Contents ◽  
Bare Rock ◽  
Generalist Herbivore ◽  
Δ13c And Δ15n ◽  
Isotopic Signatures

AbstractGut content analyses and stable isotopes (δ13C and δ15N) were used to investigate the food consumption and assimilation of the pulmonate, Onchidella nigricans, within a rocky intertidal platform at Waiwera, northern New Zealand. Analyses of gut contents indicate that this species is a generalist herbivore, which may consume a variety of micro- and macro-algae, although small zooplankton may be ingested, when present. Gut contents of individuals collected from different intertidal habitats (bare rock, Hormosira banksii, green filaments, and coralline algae) reflected the dominant algal species within each habitat, suggesting that food availability does not restrict the grazer's distribution across its range. The radular morphology and small size of this gastropod also support the notion that O. nigricans is a non-selective microphagous feeder. However, stable isotopes on O. nigricans from the four habitats and the dominant algal food types indicate a strong assimilation preference for microalgae. The δ13C values (-15 to -13‰) of O. nigricans were consistent with signatures for intertidal grazers, but δ15N values (8 to 9‰) were relatively high, which may indicate the presence of bacteria and microfaunal detritus in the diet. Clusters of isotopic signatures of individuals from different habitats suggest feeding preferences, which also may be attributed to differences in detrital and bacterial consumption. This study illustrates the importance of using parallel techniques in diet studies.

Trophic ecology of tadpoles in floodplain wetlands: combining gut contents, selectivity, and stable isotopes to study feeding segregation of syntopic species

Hydrobiologia ◽  
2020 ◽  
Vol 847 (14) ◽  
pp. 3013-3024
Author(s):  
Carolina Elisabet Antoniazzi ◽  
Javier Alejandro López ◽  
Rodrigo Ezequiel Lorenzón ◽  
Miguel Saigo ◽  
Melina Devercelli ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology ◽  
Gut Contents ◽  
Floodplain Wetlands

Resource partitioning in endemic species of Baikal gastropods indicated by gut contents, stable isotopes and radular morphology

Hydrobiologia ◽  
2011 ◽  
Vol 682 (1) ◽  
pp. 75-90 ◽  
Author(s):  
Tatiana Sitnikova ◽  
Sergei I. Kiyashko ◽  
Natalia Maximova ◽  
Galina V. Pomazkina ◽  
Peter Roepstorf ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Endemic Species ◽  
Resource Partitioning ◽  
Gut Contents

Differences in productivity QOL, and resource use in newly diagnosed and established irritable bowel syndrome (IBS) patients

2001 ◽  
Vol 120 (5) ◽  
pp. A634-A634
Author(s):  
P JHINGRAN ◽  
J RICCI ◽  
M MARKOWITZ ◽  
S GORDON ◽  
A ASGHARIAN ◽  
...  
Keyword(s):  
Irritable Bowel Syndrome ◽  
Resource Use ◽  
Newly Diagnosed ◽  
Irritable Bowel
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