Resource utilization of puffer fish in a subtropical bay as revealed by stable isotope analysis and food web modeling

2019 ◽  
Vol 626 ◽  
pp. 161-175 ◽  
Author(s):  
M Lemoine ◽  
T Moens ◽  
AM Vafeiadou ◽  
LAV Bezerra ◽  
P Lana
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Resource Utilization ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Puffer Fish

Stable isotope analysis reveals partitioning in prey use by Kajikia audax (Istiophoridae), Thunnus albacares, Katsuwonus pelamis, and Auxis spp. (Scombridae) in the Eastern Tropical Pacific of Ecuador

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
Rigoberto Rosas-Luis ◽  
Nancy Cabanillas-Terán ◽  
Carmen A. Villegas-Sánchez
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Middle Level ◽  
Food Sources ◽  
Thunnus Albacares ◽  
Katsuwonus Pelamis ◽  
Δ13c And Δ15n

Abstract Kajikia audax, Thunnus albacares, Katsuwonus pelamis, and Auxis spp. occupy high and middle-level trophic positions in the food web. They represent important sources for fisheries in Ecuador. Despite their ecological and economic importance, studies on pelagic species in Ecuador are scarce. This study uses stable isotope analysis to assess the trophic ecology of these species, and to determine the contribution of prey to the predator tissue. Isotope data was used to test the hypothesis that medium-sized pelagic fish species have higher δ15N values than those of the prey they consumed, and that there is no overlap between their δ13C and δ15N values. Results showed higher δ15N values for K. audax, followed by T. albacares, Auxis spp. and K. pelamis, which indicates that the highest position in this food web is occupied by K. audax. The stable isotope Bayesian ellipses demonstrated that on a long time-scale, these species do not compete for food sources. Moreover, δ15N values were different between species and they decreased with a decrease in predator size.

Food web structure of a shallow eutrophic lake (Lake Taihu, China) assessed by stable isotope analysis

Hydrobiologia ◽  
2011 ◽  
Vol 683 (1) ◽  
pp. 173-183 ◽  
Author(s):  
Zhigang Mao ◽  
Xiaohong Gu ◽  
Qingfei Zeng ◽  
Luhong Zhou ◽  
Mingbo Sun
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Lake Taihu ◽  
Isotope Analysis ◽  
Eutrophic Lake ◽  
Food Web Structure ◽  
Web Structure ◽  
Shallow Eutrophic Lake

Food web structure prior to and following construction of artificial reefs, based on stable isotope analysis

2020 ◽  
Vol 37 ◽  
pp. 101354 ◽  
Author(s):  
Zhipeng Zhang ◽  
Mingqi Wang ◽  
Jingjing Song ◽  
Wenxi Zhao ◽  
Daode Yu ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Artificial Reefs ◽  
Food Web Structure ◽  
Web Structure

Trophic relationships in a tropical stream food web assessed by stable isotope analysis

2009 ◽  
Vol 54 (5) ◽  
pp. 1028-1041 ◽  
Author(s):  
SOPHIE COAT ◽  
DOMINIQUE MONTI ◽  
CLAUDE BOUCHON ◽  
GILLES LEPOINT
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Trophic Relationships ◽  
Tropical Stream

Stable isotope analysis of a newly established macrofaunal food web 1.5years after the Hebei Spirit oil spill

2015 ◽  
Vol 90 (1-2) ◽  
pp. 167-180 ◽  
Author(s):  
Eunah Han ◽  
Hyun Je Park ◽  
Leandro Bergamino ◽  
Kwang-Sik Choi ◽  
Eun Jung Choy ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Oil Spill ◽  
Stable Isotope Analysis ◽  
Isotope Analysis

A seasonal survey of the food web in the Lapalme Lagoon (northwestern Mediterranean) assessed by carbon and nitrogen stable isotope analysis

2007 ◽  
Vol 73 (1-2) ◽  
pp. 299-315 ◽  
Author(s):  
Antoine Carlier ◽  
Pascal Riera ◽  
Jean-Michel Amouroux ◽  
Jean-Yves Bodiou ◽  
Karine Escoubeyrou ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen ◽  
Northwestern Mediterranean

scholarly journals Trophic Relations of the Red-Necked Grebe on Lakes in the Western Boreal Forest: A Stable-Isotope Analysis

The Condor ◽  
2004 ◽  
Vol 106 (3) ◽  
pp. 638-651 ◽  
Author(s):  
Cynthia A. Paszkowski ◽  
Beverly A. Gingras ◽  
Kayedon Wilcox ◽  
Paul H. Klatt ◽  
William M. Tonn
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Trophic Position ◽  
Isotope Analysis ◽  
Gut Contents ◽  
Isotopic Ratios ◽  
Trophic Relations ◽  
Podiceps Grisegena

Abstract We compared trophic ecology of grebes inferred from stable-isotope analysis to that from gut contents, and compared isotopic ratios of Red-necked Grebes (Podiceps grisegena) from lakes differing in their food webs. Analyses of different grebe tissues (egg yolk and albumen, pectoral and leg muscle, breast and primary feathers) also allowed us to assess the effectiveness of these tissues at representing grebe trophic relations. Isotopic ratios from pectoral and leg muscles were similar, based on comparisons within individual birds. Enriched values of δ15N and δ13C suggested that breast and primary feathers were molted over winter, and therefore reflected a marine food web. Albumen and yolk of grebe eggs and muscle tissues from downy chicks, however, matched isotopic characteristics of the local food web, indicating that female Red-necked Grebes use nutrients from the breeding lake for egg formation. Eggs, therefore, can provide excellent material for isotopic analysis aimed at assessing trophic relations of Red-necked Grebes on breeding lakes. Gut contents and stable isotopes both indicated that grebes from lakes with fish consumed a mixed diet of fish and macroinvertebrates and occupied the highest trophic level, at or above the level of piscivorous fishes. In contrast, grebes from lakes lacking fish occupied a lower trophic position. Relaciones Tróficas de Podiceps grisegena en Lagos del Bosque Boreal del Oeste: Un Análisis de Isótopos Estables Resumen. Comparamos la ecología trófica de Podiceps inferida a partir de análisis de isótopos estables con la de contenidos estomacales y comparamos las relaciones isotópicas de P. grisegena entre lagos que difieren en sus redes tróficas. Los análisis de diferentes tejidos de P. grisegena (yema y albumen del huevo, músculo pectoral y de la pierna, plumas del pecho y primarias) también nos permitieron evaluar la efectividad de estos tejidos para representar las relaciones tróficas de P. grisegena. Las relaciones isotópicas de los músculos pectorales y de las piernas basadas en comparaciones realizadas para cada ave individual fueron similares. Valores enriquecidos de δ15N y δ13C sugirieron que las aves mudaron las plumas del pecho y las primarias durante el invierno, y por lo tanto reflejaron una red trófica marina. El albumen y la yema del huevo de P. grisegena y los tejidos musculares de pichones emplumados, sin embargo, coincidieron con las características isotópicas de la red alimenticia local, indicando que las hembras de P. grisegena usan nutrientes del lago donde nidifican para la formación de los huevos. Los huevos, por lo tanto, pueden constituir un material excelente para análisis isotópicos centrados en evaluar las relaciones tróficas de P. grisegena en los lagos donde se reproducen. Los contenidos estomacales y los isótopos estables indicaron que los individuos de P. grisegena provenientes de lagos con peces consumieron una dieta mixta de peces y macroinvertebrados y ocuparon la posición trófica más alta, al mismo nivel o por arriba de los peces piscívoros. En contraste, los individuos provenientes de lagos sin peces ocuparon una posición trófica menor.

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