A5040443015- Amphibian and Reptile Biology
- Primate Behavior and Ecology
- Plant and animal studies
- Aquatic life and conservation
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Aquaculture disease management and microbiota
- Protist diversity and phylogeny
- Lichen and fungal ecology
- Gut microbiota and health
- Neurobiology and Insect Physiology Research
- Fish Ecology and Management Studies
- Environmental Toxicology and Ecotoxicology
- Animal and Plant Science Education
- Insect Utilization and Effects
- Ecology and Vegetation Dynamics Studies
- Microbial Community Ecology and Physiology
- Turtle Biology and Conservation
- Environmental DNA in Biodiversity Studies
- Aquaculture Nutrition and Growth
- Insect Pheromone Research and Control
- Clostridium difficile and Clostridium perfringens research
- Probiotics and Fermented Foods
- Geology and Paleoclimatology Research
Binghamton University
2024
Asociación para la Conservación de la Cuenca Amazónica
2024
Temasek Life Sciences Laboratory
2021
University of Sussex
1992-2000
The hypothesis that most of the pollen collected by forest-floor moss polsters originates from local sources (i.e. trees growing within a 20-m radius) was tested comparing and forest inventory data 30 plots in three extensively forested regions. Within each region, were located stands similar composition to regional forests (matrix sites) as well patches differing substantially (patch sites). Scatter regression analyses indicated between 25 90% tree assemblages originated beyond...
1. The development of natterjack toad (Bufo calamita Laurenti) tadpoles was monitored under two levels food and with or without competitors (Rana temporaria L.) using a replicated pond system. design prevented physical interactions between species but allowed B. access to R. faeces. 2. Food supplements accelerated growth competitors. presence depressed growth, even conditions high food. 3. raised metamorphosed earlier than those low food, neither nor affected survival. 4. growth-inhibiting...
Growth of small anuran larvae (Bufo calamita) was inhibited in the presence larger (Rana temporaria) by an interference mechanism involving unicellular algae genus Prototheca. Protothecans sequestered only amounts available nutrients during their passage through larval gut, but feces diverted tadpoles from high-quality food sources and thus promoted coprophagy as alternative feeding strategy. Large produced protothecans numbers inversely related to supply, which accentuated growth inhibition...
SUMMARY 1. Numbers of the contramensal alga Prototheca richardsi were high in spring two ponds used for breeding by anuran amphibians, but lower at other times year and undetectable not anurans. 2. became abundant silt eight experimental which contained tadpoles, remained four otherwise identical lacking tadpoles. 3. numbers laboratory microcosms stable many days sterile tap water, declined with a half‐life about 6 pond water 20°C. 4. Further studies using antibiotics electron microscopy...
SUMMARY Prototheca richardsi , an unpigmented heterotrophic alga, causes growth inhibition in amphibian larvae and has proved refractory to culture Vitro . P. replication is dependent on regular passaging through tadpole digestive systems; uptake of thymidine by free-living cells incorporation into DNA are very low comparison with leucine protein, but synthesis detectable isolated from intestines. was elicited 6–8 h after ingestion protothecans fed tadpoles subsequently re-isolated them,...
Abstract The faeces of tadpoles frequently contain cells that can inhibit the growth other individuals. We examined mechanism such cell-mediated interference competition in interactions between Rana temporaria and Bufo calamita. When R. B. calamita were exposed to cell-laden from larger tadpoles, was inhibited relative controls. Tadpoles remained susceptible inhibitory effects for longer during development than those temporaria. In presence excess food, cell production by both species...
Abstract Dietary changes are known to alter the composition of gut microbiome. However, it is less understood how repeatable and reversible these diet-switches affect microbiota in various segments gastrointestinal tract. Here, a treatment group conventionally raised laboratory mice subjected two periods western diet (WD) interrupted by period standard (SD) same duration. Beta-diversity analyses show that diet-induced largely ( q = 0.1501; PERMANOVA, weighted-UniFrac comparison treatment-SD...