Results 21 to 30 of about 1,132,962 (299)

Seasonal and Interspecific Variation in Frugivory by a Mixed Resident-Migrant Overwintering Songbird Community

open access: yesDiversity, 2021
Many temperate passerine bird species switch from diets of mostly invertebrates in the spring and summer to diets that include fruit and seeds in the fall and winter.
Wales A. Carter   +4 more
doaj   +1 more source

Diet seasonality and food overlap of the fish assemblage in a pantanal pond [PDF]

open access: yesNeotropical Ichthyology, 2008
We assessed the trophic structure of the fish fauna in Sinhá Mariana pond, Mato Grosso State, from March 2000 to February 2001. The aim was to determine the feeding patterns of the fish species during the rainy and dry seasons. The diets of 26 species (1,294 stomach contents) were determined by the volumetric method.
Novakowski, Gisele Caroline   +2 more
openaire   +5 more sources

Invasion Risk and Potential Impact of Alien Freshwater Fishes on Native Counterparts in Klang Valley, Malaysia

open access: yesAnimals, 2021
This study explores the potential effects of alien fishes on the native fish community, well-being, and tropic preferences in selected rivers of Klang Valley, Malaysia.
Abdulwakil Olawale Saba   +9 more
doaj   +1 more source

A COMPARATIVE STUDY ON THE FEEDING COMPETITION OF THE EUROPEAN PERCH PERCA FLUVIATILIS L. AND THE RUFFE GYMNOCEPHALUS CERNUUS (L.) IN LAKE PIEDILUCO (UMBRIA, ITALY).

open access: yesKnowledge and Management of Aquatic Ecosystems, 2007
The abundance of European perch in Lake Piediluco has significantly dwindled in the last few years. The present study on diet overlap between perch and ruffe was prompted by the rapid expansion of the ruffe stock in the lake. This species was first found
LORENZONI M.   +3 more
doaj   +1 more source

Does diet overlap among larval and 0+ fish species decrease with ontogenetic development?

open access: yesArchives of Polish Fisheries, 2014
The aim of the study was to determine the degree of overlap in the feeding niches of early developmental stages of roach, Rutilus rutilus (L.), perch, Perca fluviatilis L., bleak, Alburnus alburnus (L.) and sunbleak, Leucaspius delineatus (Heckel).
Bogacka-Kapusta Elżbieta   +1 more
doaj   +1 more source

Diet composition, quality and overlap of sympatric American pronghorn and gemsbok [PDF]

open access: yesWildlife Biology, 2017
Species with a long evolutionary history of sympatry often have mechanisms for resource partitioning that reduce competition. However, introduced non‐native ungulates often compete with native ungulates and competitive effects can be exacerbated in arid regions due to low primary productivity.
James W. Cain   +4 more
openaire   +1 more source

Peary caribou, muskoxen and Banks Island forage: Assessing seasonal diet similarities

open access: yesRangifer, 1997
Peary caribou (Rangifer tarandus pearyi) and muskoxen {Ovibos moschatus) on Banks Island had considerable similarity in their annual diets, with monthly similarities ranging from 17.8-73.3%.
Nicholas C. Larter, John A. Nagy
doaj   +1 more source

Diet Composition and Overlap in a Mixed Warm- and Coldwater Fish Community [PDF]

open access: yesJournal of Freshwater Ecology, 2008
ABSTRACT In Twin Lakes, Washington, illegal introductions of largemouth bass (Micropterus salmoides) and golden shiner (Notemigonus crysoleucas) are feared to be impacting economically important rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) populations.
David R. Christensen, Barry C. Moore
openaire   +1 more source

Feeding strategy of Menticirrhus americanus and Menticirrhus littoralis (Perciformes: Sciaenidae) juveniles in a sandy beach surf zone of southern Brazil

open access: yesZoologia (Curitiba), 2010
The diet and foraging strategy of juvenile Menticirrhus americanus (Linnaeus, 1758) and Menticirrhus littoralis (Holbrook, 1847) were studied, testing the existence of trophic overlap between these species and within different seasons (spring and summer).
Fábio L. Rodrigues, João P. Vieira
doaj   +1 more source

Feeding ecology of demersal elasmobranchs from the shelf and slope off the Balearic Sea (western Mediterranean)

open access: yesScientia Marina, 2011
The feeding ecology of eight demersal elasmobranchs, three sharks (Etmopterus spinax, Scyliorhinus canicula and Galeus melastomus) and five batoids (Myliobatis aquila, Leucoraja naevus, Raja polystigma, R. miraletus and R. clavata), from the Balearic Sea
Maria Valls   +3 more
doaj   +1 more source

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