A5034607606- Animal Behavior and Reproduction
- Genetic diversity and population structure
- Chromosomal and Genetic Variations
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Fish Biology and Ecology Studies
- Amphibian and Reptile Biology
- Genomics and Phylogenetic Studies
- Primate Behavior and Ecology
- Neuroendocrine regulation and behavior
- Evolution and Genetic Dynamics
- Fish Ecology and Management Studies
- Reproductive biology and impacts on aquatic species
- Genetic Mapping and Diversity in Plants and Animals
- Animal Genetics and Reproduction
- Genetics, Bioinformatics, and Biomedical Research
- Plant and animal studies
- Regulation of Appetite and Obesity
- Sex and Gender in Healthcare
- Aquaculture Nutrition and Growth
- Genetic and phenotypic traits in livestock
- Gut microbiota and health
- Aquaculture disease management and microbiota
- Physiological and biochemical adaptations
- Parasite Biology and Host Interactions
- Aquatic Ecosystems and Biodiversity
Reed College
2013-2024
James Cook University
2019
University of Otago
2019
ARC Centre of Excellence for Coral Reef Studies
2019
Black Hills State University
2010
The University of Texas at Austin
2009
Stanford University
2009
University of Tennessee at Knoxville
2009
Cichlid fishes are famous for large, diverse and replicated adaptive radiations in the Great Lakes of East Africa. To understand molecular mechanisms underlying cichlid phenotypic diversity, we sequenced genomes transcriptomes five lineages African cichlids: Nile tilapia (Oreochromis niloticus), an ancestral lineage with low diversity; four members lineage: Neolamprologus brichardi/pulcher (older radiation, Lake Tanganyika), Metriaclima zebra (recent Malawi), Pundamilia nyererei (very recent...
For over 30 years, the African cichlid fish, Astatotilapia burtoni, has been an important model system for studying mechanisms underlying socially mediated behavioral change, with focus being dominance behavior of males. A recently collected wild-stock (WS) this species invigorates interest in parallel studies females' behavior. Here, we describe a robust 'good-mother' phenotype, increased maternal affiliation fry, and subtle differences males' that are exhibited by new stock. While females...
Julidochromis marlieri and transcriptus are two closely related Tanganyikan cichlids that have evolved different behavior mating strategies since they diverged from their common ancestor. While J. follows the ancestral pattern of male dominance, male-biased sexual size dimorphism territoriality, is reversed in marlieri. In marlieri, females show all these behavioral morphological characteristics. This raises question whether female achieve dominant phenotype by expressing same genes as males...
We characterized the male-specific region on Y chromosome of rainbow trout, which contains both sdY (the sex-determining gene) and genetic marker, OmyY1. Several clones containing OmyY1 marker were screened from a BAC library YY clonal line found to be part an 800 kb contig. Using fluorescence in situ hybridization (FISH), these localized end short arm with additional signal X many cells. sequenced minimum tiling path using Illumina 454 pyrosequencing. The is rich transposons rDNA, but also...
The diversity of mating systems among animals is astounding. Importantly, similar have evolved even across distantly related taxa. However, our understanding the mechanisms underlying these convergently phenotypes limited. Here, we examine on a genomic scale neuromolecular basis social organization in cichlids tribe Ectodini from Lake Tanganyika. Using field-collected males and females four closely species representing two independent evolutionary transitions polygyny to monogamy, take...
Genome-wide analysis of sequence divergence among species offers profound insights into the evolutionary processes that shape lineages. When full-genome sequencing is not feasible for a broad comparative study, we propose use array-based genomic hybridization (aCGH) in order to identify orthologous genes with high divergence. Here discuss experimental design, statistical power, success rate, sources variation and potential confounding factors. We used spotted PCR product microarray platform...
Gene duplication is a source of evolutionary innovation and can contribute to the divergence lineages; however, relative importance this process remains be determined. The explosive African cichlid adaptive radiations provides both model for studying general role gene in lineages also an exciting foray into identification genomic features that underlie dramatic phenotypic ecological diversification particular lineage. We present first genome-wide study fishes, identifying duplicates three...
AbstractAcross the animal kingdom there are myriad forms within a sex across, and even within, species, rendering concepts of universal traits moot. The mechanisms that regulate development these trait differences varied, although in vertebrates, common pathways involve gonadal steroid hormones. Gonadal steroids often associated with heteromorphic development, where found at higher circulating levels is one involved for sex. Occasionally, situations which or monomorphic another We propose...
ABSTRACT Many of the various parental care strategies displayed by animals are accompanied a significant reduction in food intake that imposes substantial energy trade-off. Mouthbrooding, as seen several species fish which parent holds developing eggs and fry buccal cavity, represents an extreme example reduced during investment is range physiological adaptations. In this study we use 16S sequencing to characterize gut microbiota female Astatotilapia burtoni cichlid throughout obligatory...
ABSTRACT Parental care in Astatotilapia burtoni entails females protecting eggs and developing fry a specialized buccal cavity the mouth. During this mouthbrooding behavior, which can last 2–3 weeks, mothers undergo voluntary fasting accompanied by loss of body mass major metabolic changes. Following release fry, resume normal feeding behavior quickly recover as they become reproductively active once again. In order to investigate molecular underpinnings such dramatic behavioral changes, we...
The initial sequencing of five cichlid genomes revealed an accumulation genetic variation, including extensive copy number variation in lineages particularly those that have undergone dramatic evolutionary radiation. Gene duplication has the potential to generate substantial molecular substrate for origin novelty. We use array-based comparative heterologous genomic hybridization identify events (CNVEs) 168 samples representing 53 species 5 which full genome sequence is available. average...
Comparison of genomic DNA among closely related strains or species is a powerful approach for identifying variation in evolutionary processes. One potent source gene duplication, which prevalent individuals and species. Array comparative hybridization (aCGH) has been successfully utilized to detect this lineages. Here, beyond the demonstration that duplicates can be quantified with aCGH, we consider effect sequence divergence on ability duplicates. Using X chromosome content difference...
Abstract In biparental species, aggression, dominance, and parental care are typically sexually dimorphic. While behavioral dimorphism is often strongly linked to gonadal sex, the environment—either social or ecological—may also influence sex‐biased behavior. cichlid fish J ulidochromis marlieri , typical environment for breeding pairs consists of large females paired with smaller males. both sexes capable providing territory defense care, larger female provides majority pair, while male...