Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"colony structure"”.
-
Predation Risk and Colony Structure in the Pea Aphid, Acyrthosiphon Pisum
… choices of individual aphids within their natal colony and how these factors influence the spatial distribution of individuals after signals of increased predation risk. Here, I find no evidence for a foraging-predation risk tradeoff in feeding site selection within aphid colonies. Predation risk …
-
The evolution of caste-specific morphology and colony structure in ants
… females fill the reproductive role of the colony which includes mating, dispersal and egg laying. The typically sterile worker caste performs other tasks for the colony such as food collection, defense, and brood care. Workers are therefore released from the morphological constraints of …
-
Colony structure and function in the Bank Swallow, <i>Riparia riparia</i>, L.
… addition, information on the development of the colony, nesting success, predation, and foraging was obtained during the nesting seasons of 1975 and 1976.</p> <p>The first swallows to arrive at the colony site located their burrows in small groups high on the bank face. Succeeding burrows were …
-
The ManhattAnt: Identification, natural history, and nutritional ecology of a recently introduced pest in New York City, Lasius emarginatus (Hymenoptera: Formicidae)
… and morphological evidence, determine their colony structure, and map their expansion. In Chapter 2, I characterize the nutritional niche of<em> L. emarginatus</em> and determine whether they are exploiting human food resources in highly urban habitats.</p>
-
The phytoplankton of a eutrophic lake : community dynamics and ultrastructural studies
… cytological detail in Paraphysomonas vestita , colony structure and scale formation in Synura petersenii, serial sectioning and 3-dimensional representation of the transverse flagellum of Peridinium cinctum and a study of the surface morphology of the scale-bearing Heliozoan Raphidocystis …
-
The influence of aspect and forest edge effects on the ecology of the wood ant, Formica rufa L. (Hymenoptera: Formicidae)
… Nest location and characteristics, density, colony structure, and the phenology of activities were also recorded. Overall, southern transects received more light but lower wind speeds than the other aspects and also supported a greater diversity of tree species. Southern nests also received …
-
Hiding in plain sight: unveiling cryptic diversity and patterns in bumble bees
… and described. In addition, the natural history, colony structure and social behavior of bumble bees are well documented and a well-supported phylogeny of the ~250 species currently recognized within the genus has been constructed. Yet despite the breadth of research that has been conducted on …