Browsing School of Biology Faculty Publications by Issue Date
Now showing items 1-20 of 227
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The transmission of stability or instability from site specific protein-DNA complexes
(Georgia Institute of TechnologyOxford University Press, 1977-08-01)Theoretical calculations were made to determine the influence of side specific 'melting' and 'stabilizing' proteins on the thermal stability of nearby base pairs (bp). A DNA sequence 999bp. long containing the 123 bp. ... -
Mutualism between harvester ants and a desert ephemeral: seed escape from rodents
(Georgia Institute of TechnologyEcological Society of America, 1980-06)The harvester ants Veromessor pergandei and Pogonomyrmex californicus modify the highly localized seed shadow of the Sonoran Desert ephemeral Datura discolor (Solanaceae) through (1) attraction to food bodies attached to ... -
The functional morphology of turf-forming seaweeds: persistence in stressful marine habitats
(Georgia Institute of TechnologyEcological Society of America, 1981-06)Many seaweeds that occur in physically stressful habitats or habitats subject to moderate herbivory grow as colonial turfs rather than as spatially separated individuals. The turf growth form is energetically expensive ... -
Herbivory, algal distribution, and the maintenance of between-habitat diversity on a tropical fringing reef
(Georgia Institute of TechnologyUniversity of Chicago Press, 1981-10)The bases of coral reefs in the Caribbean often abut sandy plains covered by sea grasses (Randall 1965; Ogden et al. 1973b) or algae (Earle 1972; Dahl 1973). Interactions occurring at the border of reefs and sea grass ... -
Is glue production by seeds of Salvia columbariae a deterrent to desert granivores?
(Georgia Institute of TechnologyEcological Society of America, 1983-08)With a few notable exceptions (Borchert and Jain 1978, Inouye et at. 1980, O'Dowd and Hay 1980, Hay and Fuller 1981), most ecological studies on seed-granivore interactions in arid communities have concentrated on the ... -
Between-habitat differences in herbivore impact on Caribbean coral reefs
(Georgia Institute of TechnologyU.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Oceanic and Atmospheric Research, Office of Undersea Research, 1983-12)Transplanted sections of the seagrass Thalassia testudinum were used as a bioassay to assess between-habitat differences in herbivory on three Caribbean reefs. Consumption of Thalassia by herbivorous fishes on shallow ... -
Patterns of fish and urchin grazing on Caribbean coral reefs: are previous results typical?
(Georgia Institute of TechnologyEcological Society of America, 1984-04)Strips of the seagrass Thalassia testudinum were used in a field bioassay to assess herbivory on 11 coral reefs scattered throughout the Caribbean. Patterns of herbivory on overfished reefs in Haiti and the United States ... -
Coral Reef Ecology: Have We Been Putting All of Our Herbivores in One Basket?
(Georgia Institute of TechnologyAmerican Institute of Biological Sciences, 1984-05-01) -
Functional morphology of intertidal seaweeds: adaptive significance of aggregate vs. solitary forms
(Georgia Institute of TechnologyInter-Research, 1984-08-15)Many intertidal seaweeds show a tremendous gradient of morphological form ranging from spatially separated thalli, to thalli that are aggregated into dense turfs. Aggregation of seaweeds into turfs decreases productivity ... -
The catabolite activator protein stabilizes its binding site in the E. coli lactose promoter
(Georgia Institute of TechnologyOxford University Press, 1985-10-25)The effect of catabolite activator protein, CAP, on the thermal stability of DNA was examined. Site specific binding was studied with a 62 bp DNA restriction fragment containing the primary CAP site of the E. coli lactose ... -
Seaweed susceptibility to herbivory: chemical and morphological correlates
(Georgia Institute of TechnologyInter-Research, 1986-10-21)The susceptibility of 82 species of tropical seaweeds to grazing by herbivorous fishes was assessed on 8 different coral reefs in the Florida Keys, USA. Most species were simultaneously assayed for the presence or absence ... -
Associational plant defenses and the maintenance of species diversity: turning competitors into accomplices
(Georgia Institute of TechnologyUniversity of Chicago Press, 1986-11) -
Chemical defense against diverse coral reef herbivores
(Georgia Institute of TechnologyEcological Society of America, 1987)Five secondary metabolites from tropical marine algae and one related compound from an herbivorous sea-hare (Aplysidae) were coated, at approximately natural concentrations, onto the palatable seagrass Thalassia testudinum ... -
Chemical defense against different marine herbivores: are amphipods insect equivalents?
(Georgia Institute of TechnologyEcological Society of America, 1987)The structurally similar diterpenoid alcohols pachydictyol-A and dictyol-E are produced by the brown seaweed Dictyota dichotoma. This seaweed and several related species that also produce these compounds are known to be ... -
Sequence distributions associated with DNA curvature are found upstream of strong E. coli promoters
(Georgia Institute of TechnologyOxford University Press, 1987-01-26)The regions upstream from forty-three procaryotic promoters were examined for nucleotide distributions which have been associated with DNA curvature. The analysis procedure assigned a DNA curvature score based on the phasing ... -
Directionality and Swimming Speeds in Predator-Prey and Male-Female Interactions of Euchaeta rimana, a Subtropical Marine Copepod
(Georgia Institute of TechnologyUniversity of Miami - Rosenstiel School of Marine and Atmospheric Science, 1988)This examination showed how the sexual dichotomy in morphology and feeding was reflected in the swimming behavior of Euchaeta rimana. Nonrandom swimming was clearly exhibited by this copepod, and the evolutionary reasons ... -
Head and thoracic transformations caused by ectopic expression ofAntennapedia during Drosophila development
(Georgia Institute of TechnologyCompany of Biologists, 1988)Segmental identity in Drosophila is controlled by the activities of the homeotic genes. One such gene is Antennapedia, which is required for the proper development of the thoracic segments. Alteration of Antennapedia ... -
DNA stem-loop structures in oligopurine-oligopyrimidine triplexes
(Georgia Institute of TechnologyOxford University Press, 1988-01-23)Closed circular DNA containing polypurine-polypyrimidine sequences can adopt a triple helical stem-loop structure under supercoiling pressure. We describe an automated procedure for building model loops and its application ... -
The ecology of rubble structures of the South Atlantic bight: a community profile
(Georgia Institute of TechnologyFish and Wildlife Service, U.S. Dept. of the Interior ; Coastal Ecology Group, Waterways Experiment Station, U.S. Army Corps of Engineers, 1988-09) -
Chemical defense in the seaweed Dictyopteris delicatula: differential effects against reef fishes and amphipods
(Georgia Institute of TechnologyInter-Research, 1988-09-21)Many seaweeds produce chemicals that deter feedlng by fishes and sea urchins. A growing body of evidence suggests that small, relatively immobile herbivores (mesograzers) such as amphpods, polychaetes, and ascoglossan ...