High trophic plasticity in the mixotrophic Mastigias papua-Symbiodiniaceae holobiont: implications for the ecology of zooxanthellate jellyfishes

2021 ◽  
Author(s):  
N Djeghri ◽  
P Pondaven ◽  
F Le Grand ◽  
A Bideau ◽  
N Duquesne ◽  
...  
Keyword(s):  
Trophic Plasticity

scholarly journals Tracing the Trophic Plasticity of the Coral–Dinoflagellate Symbiosis Using Amino Acid Compound-Specific Stable Isotope Analysis

2021 ◽  
Vol 9 (1) ◽  
pp. 182
Author(s):  
Christine Ferrier-Pagès ◽  
Stephane Martinez ◽  
Renaud Grover ◽  
Jonathan Cybulski ◽  
Eli Shemesh ◽  
...  
Keyword(s):  
Amino Acids ◽  
Essential Role ◽  
Isotope Analysis ◽  
Diagnostic Tools ◽  
Global Changes ◽  
Biosynthetic Pathways ◽  
Trophic Plasticity ◽  
Trophic Index ◽  
Δ15n And Δ13c ◽  
Acid Compound

The association between corals and photosynthetic dinoflagellates is one of the most well-known nutritional symbioses, but nowadays it is threatened by global changes. Nutritional exchanges are critical to understanding the performance of this symbiosis under stress conditions. Here, compound-specific δ15N and δ13C values of amino acids (δ15NAA and δ13CAA) were assessed in autotrophic, mixotrophic and heterotrophic holobionts as diagnostic tools to follow nutritional interactions between the partners. Contrary to what was expected, heterotrophy was mainly traced through the δ15N of the symbiont’s amino acids (AAs), suggesting that symbionts directly profit from host heterotrophy. The trophic index (TP) ranged from 1.1 to 2.3 from autotrophic to heterotrophic symbionts. In addition, changes in TP across conditions were more significant in the symbionts than in the host. The similar δ13C-AAs signatures of host and symbionts further suggests that symbiont-derived photosynthates are the main source of carbon for AAs synthesis. Symbionts, therefore, appear to be a key component in the AAs biosynthetic pathways, and might, via this obligatory function, play an essential role in the capacity of corals to withstand environmental stress. These novel findings highlight important aspects of the nutritional exchanges in the coral–dinoflagellates symbiosis. In addition, they feature δ15NAA as a useful tool for studies regarding the nutritional exchanges within the coral–symbiodiniaceae symbiosis.

Trophic plasticity of mixotrophic corals under contrasting environments

2021 ◽  
Author(s):  
Nicolas Sturaro ◽  
Yunli Eric Hsieh ◽  
Qi Chen ◽  
Pei‐Ling Wang ◽  
Vianney Denis
Keyword(s):  
Trophic Plasticity

scholarly journals Nutrient starvation impairs the trophic plasticity of reef‐building corals under ocean warming

2019 ◽  
Vol 33 (4) ◽  
pp. 643-653 ◽  
Author(s):  
Leïla Ezzat ◽  
Jean‐François Maguer ◽  
Renaud Grover ◽  
Cécile Rottier ◽  
Pascale Tremblay ◽  
...  
Keyword(s):  
Nutrient Starvation ◽  
Ocean Warming ◽  
Trophic Plasticity

scholarly journals Stable Isotopes Reveal Trophic Partitioning and Trophic Plasticity of a Larval Amphibian Guild

PLoS ONE ◽  
2015 ◽  
Vol 10 (6) ◽  
pp. e0130897 ◽  
Author(s):  
Rosa Arribas ◽  
Carmen Díaz-Paniagua ◽  
Stephane Caut ◽  
Ivan Gomez-Mestre
Keyword(s):  
Stable Isotopes ◽  
Trophic Plasticity ◽  
Trophic Partitioning ◽  
Larval Amphibian

The Use of Lipids and Fatty Acids to Measure the Trophic Plasticity of the Coral Stylophora subseriata

Lipids ◽  
2012 ◽  
Vol 48 (3) ◽  
pp. 275-286 ◽  
Author(s):  
J. Seemann ◽  
Y. Sawall ◽  
H. Auel ◽  
C. Richter
Keyword(s):  
Fatty Acids ◽  
Trophic Plasticity

Trophic plasticity of invasive juvenile largemouth bass Micropterus salmoides in Iberian streams

2012 ◽  
Vol 113 (1) ◽  
pp. 153-158 ◽  
Author(s):  
David Almeida ◽  
Ana Almodóvar ◽  
Graciela G. Nicola ◽  
Benigno Elvira ◽  
Gary D. Grossman
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Trophic Plasticity

scholarly journals Feeding habits of the spotted rose snapper, Lutjanus guttatus, (Actinopterygii, Perciformes, Lutjanidae), in the central Gulf of California, BCS, Mexico

2021 ◽  
Vol 51 (1) ◽  
pp. 95-105
Author(s):  
Filius L. Valle-Lopez ◽  
Xchel G. Moreno-Sánchez ◽  
Marina S. Irigoyen-Arredondo ◽  
Leonardo A. Abitia-Cárdenas ◽  
Emigdio Marín-Enríquez ◽  
...  
Keyword(s):  
Gulf Of California ◽  
Trophic Ecology ◽  
Feeding Habits ◽  
Feeding Strategy ◽  
Trophic Niche ◽  
Trophic Plasticity ◽  
Important Prey ◽  
Management Measures ◽  
Reported Study ◽  
Santa Rosalia

The spotted rose snapper, Lutjanus guttatus (Steindachner, 1869), is an important resource for the coastal fisheries of the Gulf of California, mainly due to its high commercial value. Despite this, there are no management measures for this species, owing in part to a lack of information on its basic biology and its trophic ecology in the area. In this context, the presently reported study had as objective to describe the feeding habits of L. guttatus through stomach content analyses, as well as to describe possible changes linked to sex, size, and season. Specimens were caught monthly from June 2016 to September 2017 with gillnets in Santa Rosalía, BCS, Mexico. The abundance, weight, and frequency of occurrence of each prey were assessed, and these parameters were integrated into the index of relative importance (%IRI) to determine the importance of each prey item in the L. guttatus diet. The Levin’s index was used to assess the trophic niche width of the species, the feeding strategy was evaluated using Costello’s graphic method and the trophic level was calculated. Finally, to establish whether there were significant differences in the diet by sex, size, or season a PERMANOVA test was used with a 95% confidence level. A total of 202 L. guttatus stomachs were analyzed, 191 of which contained food. A total of 26 prey items were identified. According to the %IRI, the most important prey were the teleost fishes Harengula thrissina (Jordan et Gilbert, 1882) (45.7%) and Sardinops sagax (Jenyns, 1842) (34.8%), the euphausiid Nyctiphanes simplex (13.4%), and the crustacean Penaeus spp. (5.6%). The PERMANOVA analysis resulted in significant differences between the analyzed categories; however, there were no significant differences in the interactions among the categories. According to Levin’s index, L. guttatus had a narrow trophic width, with changes in the main prey consumed by the different categories. According to our results, L. guttatus can be considered a benthopelagic opportunistic carnivorous predator with a narrow trophic niche, presenting mostly quantitative variations in its diet according to sex, size, and season. Its trophic plasticity allows it to take advantage of the most available and abundant food resources.

Trophic plasticity and the invasion of a renowned piscivore: a diet synthesis of northern pike (Esox lucius) from the native and introduced ranges in Alaska, U.S.A.

2019 ◽  
Vol 21 (4) ◽  
pp. 1379-1392 ◽  
Author(s):  
C. Nathan Cathcart ◽  
Kristine J. Dunker ◽  
Thomas P. Quinn ◽  
Adam J. Sepulveda ◽  
Frank A. von Hippel ◽  
...  
Keyword(s):  
Northern Pike ◽  
Esox Lucius ◽  
Trophic Plasticity ◽  
Pike Esox Lucius ◽  
Native And Introduced Ranges
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