A5083887483- Coral and Marine Ecosystems Studies
- Crustacean biology and ecology
- Marine and fisheries research
- Animal Behavior and Reproduction
- Parasite Biology and Host Interactions
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Genetic diversity and population structure
- Marine and coastal plant biology
- Aquaculture disease management and microbiota
- Environmental Toxicology and Ecotoxicology
- Wildlife Ecology and Conservation
- Plant and animal studies
- Marine Biology and Environmental Chemistry
- Reproductive biology and impacts on aquatic species
- Coastal wetland ecosystem dynamics
- Mosquito-borne diseases and control
- Environmental Education and Sustainability
- Evolutionary Game Theory and Cooperation
- Microplastics and Plastic Pollution
- Aquatic Ecosystems and Phytoplankton Dynamics
- Coastal and Marine Management
- Climate Change Communication and Perception
- Marine animal studies overview
- Morphological variations and asymmetry
Clemson University
2014-2024
Universidad Católica del Norte
2024
Idaho State University
2001
Florida State University
1996
University of California, Berkeley
1990
University of Tampa
1987-1988
Vigilance in socially foraging animals (e.g., elk) may serve to detect predators (i.e., reduce predation risk) or monitor the behavior of conspecifics conspecific risk and/or increase reproductive benefits). These potential benefits and costs vigilance not be equal among different genders age classes together. We observed male female elk from 3 (yearlings, nonreproductive, reproductive) during 2 seasons (calving season, breeding season) that vary social interactions regions Yellowstone...
<title>Abstract</title> Ocean warming is increasing the incidence, scale, and severity of global-scale coral bleaching mortality, culminating in third global event that occurred during record marine heatwaves 2014-2017. While local effects these events have been widely reported, implications remain unknown. Analysis 15,066 reef surveys 2014-2017 revealed 80% surveyed reefs experienced significant 35% mortality. The extent mortality was assessed by extrapolating results from using...
Phylogenetic relationships among all described species and four subspecies (total of 21 taxa) the spiny lobster genus Panulirus White, 1847, were examined with nucleotide sequence data from portions two mitochondrial genes, large-subunit ribosomal RNA (16S) cytochrome oxidase subunit I (COI). Multiple alignments subjected to maximum-parsimony, neighbour-joining, maximum-likelihood analysis Jasus edwardsii as outgroup. Two major lineages within recovered by three methods for both 16S COI...
Abstract Rotifers are widely used as live larval feed in aquaculture. The stability of rotifer mass cultures, however, remains a critical unresolved problem. It would be useful to develop indicators that can assess the status cultures and serve an early warning trouble. Indicators should sensitive, easy measure have quick response time. Two been developed fulfill these criteria: swimming activity egg ratio (eggs per female). A test is described based on measurement over grid. Results...
In 1991 and 1992, cyanobacterial blooms depleted sponges, the primary refuge of juvenile Caribbean spiny lobsters, in ~20% nursery Florida Keys, USA. Long-term data from affected middle Keys were used to study impact sponge loss, abundance, recruitment shelter use. A manipulative experiment (1991–93) involved artificial shelters on 27 ~0.5-h sites. Conditions 19 sites over ~ 500 km 2 area compared before after blooms. The entire (~10,000 km2) was surveyed estimate disturbance total...
Abstract Environmental heterogeneity can promote the emergence of locally adapted phenotypes among subpopulations a species, whereas gene flow result in phenotypic and genotypic homogenization. For organisms like amphidromous fishes that change habitats during their life history, balance between selection migration shift through ontogeny, making likelihood local adaptation difficult to predict. In Hawaiian waterfall‐climbing gobies, it has been hypothesized larval mixing oceanic dispersal...
Spiny lobsters (Palinuridae) commonly share crevice shelters with conspecifics, a behaviour usually hypothesized to benefit mutually cooperative defenders through reduced predation risk. The group-defence hypothesis predicts suite of distinct corollary life history traits and ecological correlates including more frequent co-denning than solitary denning, especially where predators or den competitors are numerous when the small, moulting otherwise vulnerable. Two alternative hypotheses,...
Summary The decline with age of mictic female susceptibility to fertilization and male capacity for is characterized the rotifer Brachionus plicatilis. All females were susceptible until 4 hr. Susceptibility then declined non-linearly according quadratic equation Y = 140.6—14.3X + 0.36X 2. By 24 hr, sexual no longer could be fertilized. Only 83% newborn males capable fertilization. This level fertility held 8 linearly. when 50% individuals fertile was termed length fertilizability 50(LF50)...
Caribbean spiny lobsters show strikingly coordinated queuing behaviour and resting, outward-facing radial formations, especially during mass migrations when large numbers cross shelter-poor substrate in daylight. The close association of individual these behaviours could be due to chance or some benefit such as dilution (and associated selfish-herd effects), group vigilance, cooperative defence, and/or drag reduction migration. To infer probable beneficial functions, we examined the...
We used the Caribbean spiny lobster Panulirus argus, one of largest brooding invertebrates in Western Atlantic, to test for presence/absence active parental care and explore reproductive performance large marine organisms. Given [i] compact embryo masses produced by P. [ii] expected disproportional increase costs with increasing mass size, [iii] theoretical allometry egg production body we predicted that females this species will engage brood care. also larger broods from lobsters should...
Abstract Since 2014, stony coral tissue loss disease (SCTLD) has rapidly spread throughout the Florida reef tract infecting and killing dozens of species. Previous studies have found that corallivorous fishes, such as butterflyfishes, are positively correlated with prevalence at both local regional scales. This study investigates association SCTLD infection butterflyfish abundance behaviors on ten reefs in middle Keys. Divers conducted video surveys fish June 2017, 2018, 2019; before,...
The Florida Keys reef tract has rapidly shifted from a structurally complex, hard coral-dominated to less rugose, soft reef. This transition been facilitated by persistent anthropogenic stressors including recreational and commercial fishing increased marine debris. During the summers of 2020–2022, benthic censuses were conducted identify substrate debris composition for 30 reefs in middle Keys. Inshore contained higher rugosity, coral cover, abundance primarily comprised monofilament rope...
This study examined the patterns of morphological variation both between species, and sexes among populations within each species Mexican sailfin mollies, Poecilia velifera petenensis , using geometric morphometrics linear measurements traits. While differed in characteristics that may be important sexual selection, such as length dorsal fin, traits, body depth, also influenced by natural selection due to differences habitats. Within many traits were similar populations, but differences,...
Werner and Gilliam’s (1984) model predicts that size-specific rates of growth mortality determine the size at transition for animals with an ontogenetic habitat shift (OHS). Although are unlikely to calculate rate, they often respond changes in predation risk. For many social species, individual’s risk is reduced by conspecific aggregation. We hypothesize individuals groups this reduction should habitats a smaller than solitary individuals. tested hypothesis altering food availability,...