scholarly journals Retrospective stable isotopes of vertebrae reveal sexual ontogenetic patterns and trophic ecology in oceanic whitetip shark, Carcharhinus longimanus

2021 ◽  
Author(s):  
Yongfu Shen ◽  
Yi Gong ◽  
Feng Wu ◽  
Yunkai Li
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology

scholarly journals Beyond trophic morphology: stable isotopes reveal ubiquitous versatility in marine turtle trophic ecology

2019 ◽  
Vol 94 (6) ◽  
pp. 1947-1973 ◽  
Author(s):  
Christine Figgener ◽  
Joseph Bernardo ◽  
Pamela T. Plotkin
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology ◽  
Marine Turtle ◽  
Trophic Morphology

scholarly journals Trophic ecology of Mexican Pacific harbor seal colonies using carbon and nitrogen stable isotopes

PLoS ONE ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. e0225889
Author(s):  
Maricela Juárez-Rodríguez ◽  
Gisela Heckel ◽  
Juan Carlos Herguera-García ◽  
Fernando R. Elorriaga-Verplancken ◽  
Sharon Z. Herzka ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology ◽  
Harbor Seal ◽  
Nitrogen Stable Isotopes ◽  
Mexican Pacific ◽  
Carbon And Nitrogen

Trophic ecology in a Northern Brittany (Batz Island, France) kelp (Laminaria digitata) forest, as investigated through stable isotopes and chemical assays

2010 ◽  
Vol 63 (1) ◽  
pp. 24-35 ◽  
Author(s):  
Gauthier Schaal ◽  
Pascal Riera ◽  
Cédric Leroux
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology ◽  
Laminaria Digitata

Stable isotopes of carbon and nitrogen in the study of avian and mammalian trophic ecology

2000 ◽  
Vol 78 (1) ◽  
pp. 1-27 ◽  
Author(s):  
Jeffrey F Kelly
Keyword(s):  
Stable Isotopes ◽  
Stable Isotope ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Trophic Ecology ◽  
Nitrogen Isotope ◽  
Isotope Ratios ◽  
Food Chains ◽  
Stable Isotope Ratios ◽  
Carbon And Nitrogen

Differential fractionation of stable isotopes of carbon during photosynthesis causes C4 plants and C3 plants to have distinct carbon-isotope signatures. In addition, marine C3 plants have stable-isotope ratios of carbon that are intermediate between C4 and terrestrial C3 plants. The direct incorporation of the carbon-isotope ratio (13C/12C) of plants into consumers' tissues makes this ratio useful in studies of animal ecology. The heavy isotope of nitrogen (15N) is preferentially incorporated into the tissues of the consumer from the diet, which results in a systematic enrichment in nitrogen-isotope ratio (15N/14N) with each trophic level. Consequently, stable isotopes of nitrogen have been used primarily to assess position in food chains. The literature pertaining to the use of stable isotopes of carbon and nitrogen in animal trophic ecology was reviewed. Data from 102 studies that reported stable-isotope ratios of carbon and (or) nitrogen of wild birds and (or) mammals were compiled and analyzed relative to diet, latitude, body size, and habitat moisture. These analyses supported the predicted relationships among trophic groups. Carbon-isotope ratios differed among species that relied on C3, C4, and marine food chains. Likewise, nitrogen-isotope ratios were enriched in terrestrial carnivorous mammals relative to terrestrial herbivorous mammals. Also, marine carnivores that ate vertebrates had nitrogen-isotope ratios that were enriched over the ratios of those that ate invertebrates. Data from the literature also indicated that (i) the carbon-isotope ratio of carnivore bone collagen was inversely related to latitude, which was likely the result of an inverse relationship between the proportion of carbon in the food chain that was fixed by C4 plants and latitude; (ii) seabirds and marine mammals from northern oceans had higher nitrogen-isotope ratios than those from southern oceans; (iii) the nitrogen-isotope ratios of terrestrial mammals that used xeric habitats were higher than the ratios of those that used mesic habitats, indicating that water stress can have important effects on the nitrogen-isotope ratio; (iv) there was no relationship between body mass and nitrogen-isotope ratio for either bone collagen or muscle of carnivores; and (v) there was linear covariation between stable-isotope ratios of carbon and nitrogen in marine food chains (but not in terrestrial C3 or C4 food chains), which is likely a product of increases in carbon-isotope ratio with trophic level in marine food chains. Differences in stable-isotope composition among trophic groups were detected despite variation attributable to geographic location, climate, and analytical techniques, indicating that these effects are large and pervasive. Consequently, as knowledge of the distribution of stable isotopes of carbon and nitrogen increases, they will probably become an increasingly important tool in the study of avian and mammalian trophic ecology.

Diversity in Habitat Use and Trophic Ecology of Brook Trout in Lake Superior and Tributary Streams Revealed Through Stable Isotopes

2011 ◽  
Vol 140 (4) ◽  
pp. 943-953 ◽  
Author(s):  
Melissa M. Robillard ◽  
Robert L. McLaughlin ◽  
Robert W. Mackereth
Keyword(s):  
Stable Isotopes ◽  
Habitat Use ◽  
Brook Trout ◽  
Trophic Ecology ◽  
Lake Superior

scholarly journals Impacts of host phylogeny, feeding styles, and parasite attachment site on isotopic discrimination in helminths infecting coral reef fish hosts

2020 ◽  
Author(s):  
Philip M. Riekenberg ◽  
Marine J. Briand ◽  
Thibaud Moléana ◽  
Pierre Sasal ◽  
Marcel van der Meer ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Trophic Ecology ◽  
Negative Relationship ◽  
Attachment Site ◽  
Trophic Relationships ◽  
Host Phylogeny ◽  
Host Parasite

AbstractStable isotopes of carbon and nitrogen characterize trophic relationships in predator-prey relationships, with clear differences between consumer and diet (discrimination factor, Δ13C, Δ15N). However, parasite-host isotopic relationships remain unclear, with Δ13C and Δ15N remaining incompletely characterized, especially for helminths. In this study, we used stable isotopes to determine discrimination factors for 13 parasite-host pairings of helminths in coral reef fish. Δ15N differences grouped according to phylogeny and attachment site on the hosts: Δ15N was positive for trematodes and nematodes from the digestive tract and varied for cestodes and nematodes from the general cavity. Δ13C showed more complex patterns with no effect of phylogeny or attachment site. A negative relationship was observed between Δ15N and host δ15N value among different host-parasite pairings as well as within 7 out of the 13 parings, indicating that host metabolic processing affects host-parasite discrimination values. In contrast, no relationships were observed for Δ13C. Our results indicate that host phylogeny, attachment site and host stable isotope value drive Δ15N of helminths in coral reef fish while Δ13C is more idiosyncratic. These results call for use of taxon- or species-specific and scaled framework for bulk stable isotopes in the trophic ecology of parasites.

Measuring the trophic ecology of ants using stable isotopes

2006 ◽  
Vol 53 (1) ◽  
pp. 65-69 ◽  
Author(s):  
C. V. Tillberg ◽  
D. P. McCarthy ◽  
A. G. Dolezal ◽  
A. V. Suarez
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology

Stable isotopes document winter trophic ecology and maternal investment of adult female southern elephant seals (Mirounga leonina) breeding at the Kerguelen Islands

2008 ◽  
Vol 155 (4) ◽  
pp. 413-420 ◽  
Author(s):  
Simon Ducatez ◽  
Sébastien Dalloyau ◽  
Pierre Richard ◽  
Christophe Guinet ◽  
Yves Cherel
Keyword(s):  
Stable Isotopes ◽  
Adult Female ◽  
Trophic Ecology ◽  
Maternal Investment ◽  
Mirounga Leonina ◽  
Elephant Seals ◽  
Kerguelen Islands ◽  
Southern Elephant Seals

scholarly journals Stable isotopes (δ13C, δ15N) and modelling as tools to estimate the trophic ecology of cultivated oysters in two contrasting environments

2007 ◽  
Vol 153 (4) ◽  
pp. 673-688 ◽  
Author(s):  
Julio César Marín Leal ◽  
Stanislas Dubois ◽  
Francis Orvain ◽  
Robert Galois ◽  
Jean-Louis Blin ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Trophic Ecology
Sign in / Sign up

Export Citation Format

Share Document