Results 11 to 20 of about 16,020 (250)

Intersexual trophic niche partitioning in an ant-eating spider (Araneae: Zodariidae). [PDF]

PLoS ONE, 2011
Divergence in trophic niche between the sexes may function to reduce competition between the sexes ("intersexual niche partitioning hypothesis"), or may be result from differential selection among the sexes on maximizing reproductive output ("sexual ...
Stano Pekár, Martina Martišová, Trine Bilde   +2 more
doaj   +4 more sources

Trophic Niche Differentiation in Rodents and Marsupials Revealed by Stable Isotopes. [PDF]

PLoS ONE, 2016
Tropical rainforests support the greatest diversity of small mammals in the world, yet we have little understanding about the mechanisms that promote the coexistence of species.
Mauro Galetti, Raisa Reis Rodarte, Carolina Lima Neves, Marcelo Moreira, Raul Costa-Pereira   +4 more
doaj   +6 more sources

The trophic niche of subterranean populations of Speleomantes italicus. [PDF]

Sci Rep, 2022
AbstractThe determination of a species trophic niche can clarify its functional role within a food web and how prey resources are used in relation with the spatial and temporal variability of environmental conditions. This information may result particularly useful for the implementation of conservation plans of endangered species having a cryptic ...
Lunghi E, Cianferoni F, Corti C, Zhao Y, Manenti R, Ficetola GF, Mancinelli G.   +6 more
europepmc   +9 more sources

Trophic niche partitioning in giant clams. [PDF]

Commun Biol
Ecosystems are influenced by competition for limited resources, a driver of niche partitioning. Over time, the emergence of novel traits facilitating new resource exploitation can reduce competition. However, additional layers of complexity, like symbiosis, complicate our understanding of the patterns shaping reef communities.
Guibert I, Conti-Jerpe IE, Pons L, Tayaban K, Sayco SL, Cabaitan P, Conaco C, Baker DM.   +7 more
europepmc   +3 more sources

Parasite effects on host’s trophic and isotopic niches [PDF]

Trends in Parasitology, 2023
Wild animals are usually infected with parasites that can alter their hosts' trophic niches in food webs as can be seen from stable isotope analyses of infected versus uninfected individuals. The mechanisms influencing these effects of parasites on host isotopic values are not fully understood.
Ana Born-Torrijos, Philip Riekenberg, Marcel T.J. van der Meer, Milen Nachev, Bernd Sures, David W. Thieltges   +5 more
openaire   +3 more sources

The dynamic trophic niche of an island bird of prey. [PDF]

Ecol Evol, 2020
AbstractOptimal foraging theory predicts an inverse relationship between the availability of preferred prey and niche width in animals. Moreover, when individuals within a population have identical prey preferences and preferred prey is scarce, a nested pattern of trophic niche is expected if opportunistic and selective individuals can be identified ...
Balza U, Lois NA, Polito MJ, Pütz K, Salom A, Raya Rey A.   +5 more
europepmc   +6 more sources

Estimation of trophic niches in myrmecophagous spider predators [PDF]

Scientific Reports, 2020
AbstractAmong spiders, taxonomically the most diversified group of terrestrial predators, only a few species are stenophagous and feed on ants. The levels of stenophagy and ant-specialisation vary among such species. To investigate whether stenophagy is only a result of a local specialisation both fundamental and realised trophic niches need to be ...
Dušátková, Lenka Petráková, Pekár, Stano, Michálek, Ondřej, Líznarová, Eva, Symondson, William O. C.   +4 more
openaire   +3 more sources

Parasitism as a Driver of Trophic Niche Specialisation [PDF]

Trends in Parasitology, 2016
The population trophic niche of free-living species can be subdivided into smaller niches comprising individuals specialising on specific food items. The roles of parasites in creating these specialised subgroups remain unclear. Intrapopulation differences in parasite infections can develop from specialist individuals within populations.
Britton, J. Robert, Andreou, Demetra
openaire   +3 more sources

Trophic Niches, Trophic Positions, and Niche Overlaps between Non-Native and Native Fish Species in a Subalpine Lake [PDF]

Water, 2020
In the last century, Italian freshwater ecosystems have been invaded by several non-native fish species. In the subalpine Lake Mergozzo (northern Italy), several recently introduced non-native species dramatically expanded their populations. We used carbon and nitrogen stable isotopes to describe the isotopic niches and trophic positions of native and ...
Cicala, D., Polgar, G., Mor, J.R., Piscia, R., Zaupa, S., Brignone S., Volta, P.   +12 more
openaire   +7 more sources

Variations of trophic structure and niche space in fish community along a highly regulated subtropical large river

Ecology and Evolution, 2022
The trophic interactions between consumers and resources play a vital role in the stability of communities. In river systems, fragmentation of natural habitats and environmental changes alters the energy basis and community composition, consequently ...
Huijun Ru, Liqiao Zhong, Nian Wei, Yunfeng Li, Qiang Sheng, Zhaohui Ni   +5 more
doaj   +1 more source