Omnivory indices were in general low, indicating prey speciation for the majority of the groups.
Telmo Morato, Telmo Morato, Emile Lemey, Gui Menezes, Gui Menezes, Christopher K Pham,Christopher K Pham, Joana Brito, Joana Brito, Ambre Soszynski, Tony J Pitcher, JohannaJ Heymans 2016, 'Food-web and ecosystem structure of the open-ocean and deep-sea environments of theAzores, NE Atlantic', Frontiers in Marine Sciencehttp://journal.frontiersin.org/Journal/10.3389/fmars.2016.00245/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Both individual-resource networks and isotopic niche approaches indicate similar patterns of omnivory for both species.
Vanessa Villanova Kuhnen, Gustavo Quevedo Romero, Arício Xavier Linhares, JefersonVizentin-Bugoni, Erica Aline Correa Porto, Eleonore Zulnara Freire Setz 2017, 'Diet overlap and spatial segregation between two neotropical marsupials revealed bymultiple analytical approaches.', PLoS ONEhttp://europepmc.org/articles/PMC5507539?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Enzymatic variability in predatory hemipterans has been suggested as the basic adaptation for convergent or divergent to omnivory.
Jorge Braz Torres, David W. Boyd 2009, 'Zoophytophagy in predatory Hemiptera', Brazilian Archives of Biology and Technologyhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500018. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The allochtonous items such as insects, autochtonous items, and vegetal material were very important, characterizing omnivory.
Leandro Muller Gomiero, Francisco Manoel de Souza Braga 2005, 'Uso do grau de preferência alimentar para a caracterização da alimentação de peixesna APA de São Pedro e Analândia - DOI: 10.4025/actascibiolsci.v27i3.1337The use of feeding preference degree to characterize feeding habits of fishes atAPA in São Pedro and Analândia - DOI: 10.4025/actascibiolsci.v27i3.1337',Acta Scientiarum : Biological Scienceshttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1337. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Hence, omnivory may be the glue that keeps communities intact even under extinction or ecological release of species.
Jan O Haerter, Namiko Mitarai, Kim Sneppen 2016, 'Food Web Assembly Rules for Generalized Lotka-Volterra Equations.', PLoS Computational Biologyhttp://europepmc.org/articles/PMC4734619?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
However, to date, few studies have investigated the dental microstructure of theropods in the omnivory/herbivory spectrum.
Khai Button, Hailu You, James I. Kirkland, Lindsay Zanno 2017, 'Incremental growth of therizinosaurian dental tissues: implications for dietary transitionsin Theropoda', PeerJhttps://peerj.com/articles/4129.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This species would present great diet plasticity (omnivory) influenced by the local variation of food resources.
José Pérez Z., Emilio Fuentes, Juan Jordán 2015, 'Diet of the grass lizard Microlophus thoracicus icae in the Ica river valley, Peru',Revista Peruana de Biologíahttp://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/11357. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Armases also displayed predatory behavior under laboratory conditions, confirming omnivory in the presence of mangrove material.
Erin Kiskaddon, Kiley Chernicky, Susan Bell 2019, 'Resource use by and trophic variability of Armases cinereum (Crustacea, Brachyura)across human-impacted mangrove transition zones', PLOS ONE10.1371/journal.pone.0212448. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
During the river phase, the species showed a tendency to herbivory and, during the reservoir phase, to omnivory.
Norma Segatti Hahn, Fernanda Aparecida da Silva Cassemiro, Rosemara Fugi 2002, 'Avaliação da dieta de Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes,Tetragonopterinae) antes e após a formação do reservatório de Salto Caxias, Estadodo Paraná, Brasil Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes,Tetragonopterinae) diet before and after the formation of Salto Caxias Reservoir,state of Paraná, Brazil', Acta Scientiarum : Biological Scienceshttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2314. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)