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Showing 1 to 20 of 224 for “"Sympatric"”.
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Food Partitioning Between Two Sympatric Cricetid Species
Many cricetid rodents occur sympatrically; their co-occurence could result in direct or indirect competition and this competition could result in the discontinuous distribution of a species within its geographic range. Presumably, sympatric species avoid competition by partitioning resources. The …
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Sympatric Soil Microbe Interactions between Streptomyces and Fusarium Isolates
… in soil microbiomes. Interactions between sympatric <em>Streptomyces</em> and <em>Fusarium</em> isolates from disease suppressive soils were investigated in this study. Dual layer agar inhibition assay revealed inhibition of <em>Streptomyces</em> by <em>Fusarium</em> in all pairwise …
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Niche Differentiating Mechanisms in Two Sympatric Species of Swallows
The present study considers certain aspects of the ecologies of cliff swallows (Petrochelidon pyrrhonota) and bam swallows (Hirundo rustica) in an area of overlap, where both species are found nesting together and foraging over the same fields. Careful attention was given to foraging flight …
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Niche segregation among three sympatric species of swallows in southern Ontario
… and Tree Swallows (Tachycineta bicolor) breed sympatrically in southern Ontario but it is unclear how these species differ ecologically, and their coexistence implies niche segregation. I investigated potential interspecific differences in nestling diet and post-fledging movements. Using DNA …
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Evaluating Competition Between Sympatric Flying Squirrels (Glaucomys Spp.) In Northeastern Minnesota
… partition their home ranges within this emerging sympatric zone. Using radio telemetry, we tracked 20 individuals (12 northern flying squirrels and 8 southern flying squirrels) and estimated 95% MCP home ranges to compare sizes and overlaps across species, sex, zone of allopatry and sympatry. …
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Chromosomal inversions as a mechanism for sympatric differentiation in common quails
Chromosomal inversions are key drivers of phenotypic divergence, local adaptation and early reproductive isolation, but their effects in highly mobile species remain poorly understood. In the common quail Coturnix coturnix, a large inversion on chromosome 1 spans about 12% of the genome and defines …
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Resource Partitioning in Seven Species of Sympatric Intertidal Chitons (Mollusca: Polyplacophora)
… contents) were partitioned among 7 species of sympatric intertidal chitons: Mopaliidae - Mopalia hindsii, M. ciliata, ~· lignosa, M. muscosa, and Katharina tunicata; and Ischnochitonidae - Tonicella lineata and Cyanoplax dentiens. Species distribution relative to intertidal height (-0.3m to …
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Factors affecting the emergence times of seven sympatric insectivorous bat species
… accounting for differing emergence times amongst sympatric insectivorous bat species.
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Partitioning along reproductive niche dimensions in sympatric New Zealand freshwater bivalve species
Sympatric species of freshwater mussels in the order Unionida may need to partition resources to enable coexistence due to their relatively sedentary life-style and complex symbiotic life-phase dependent on host-fish. Although new data on their reproductive biology is being increasingly documented, …
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Reproductive ecology and population dynamics of two sympatric species of Macoma (Bivalvia)
Populations of the sympatric intertidal bivalves, Macoma secta and M. nasuta are compared as to reproductive ecology and population dynamics. Histological examination of seasonal gonadal changes indicate that both species undergo dormancy in the winter months and rapid gamete proliferation in the …
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Comparative Biology of Sympatric Red Diamond and Southern Pacific Rattlesnakes in Southern California
<p>I compared the biology of two sympatric rattlesnakes within the context of resource use and niche partitioning. Using radio-telemetry and mark-recapture involving passive integrated transponders (PIT) tags, I studied Red Diamond (Crotalus ruber) and Southern Pacific (C. oreganus helleri) …
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Plasticity and partitioning of foraging behaviour among and within sympatric Pygocelis penguin populations
… their foraging ranges. In the Southern Ocean, sympatrically breeding penguin species often have overlapping foraging ranges and niches that may lead to competition. Interspecific (between species) and intraspecific (within species) competition are important processes that may shape the foraging …
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A Comparative Study of the Reproductive Biology of Sympatric Morning Glories (<em>Ipomoea</em>-convolvulaceae)
… of mobile organisms that serve as pollinators, sympatric co-flowering plants can potentially share pollinators with each other. This places two selection pressures on plants. First, plants compete for pollinators to visit their flowers and secondly, entice pollinators to be faithful …
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So happy together? : Pollination and reproductive strategy of two sympatric species of Acanthus L. in Kenya
Kakamega Forest represents the last remnant of equatorial rainforest in Kenya. Hence, it is of great importance as last habitat for species specialized on these forests and their associated ecosystems and, consequently, for East Africa’s biodiversity. The forest has been divided into several …
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Reproductive Life History of <i>Fundulus jenkensi</i> and Comparative Development of Five Sympatric Fundulid Species
<p><em>Fundulus</em> <em>jenkinsi</em> is recognized federally and within the state of Mississippi as a Species of Concern. Little is known about the life history of this coastal killifish, but a detailed reproductive histology study of <em>F. jenkinsi</em> and a diagnostic key of the early life …
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