Neil J. Gemmell
A5065672420- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Reproductive biology and impacts on aquatic species
- Environmental DNA in Biodiversity Studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Identification and Quantification in Food
- Animal Behavior and Reproduction
- Marine animal studies overview
- Microbial Community Ecology and Physiology
- Fish Ecology and Management Studies
- Wildlife Ecology and Conservation
- Animal Genetics and Reproduction
- Chromosomal and Genetic Variations
- Molecular Biology Techniques and Applications
- Mitochondrial Function and Pathology
- Amphibian and Reptile Biology
- Insect symbiosis and bacterial influences
- Bat Biology and Ecology Studies
- RNA and protein synthesis mechanisms
- Plant and animal studies
- CRISPR and Genetic Engineering
- Marine Ecology and Invasive Species
- Insect and Arachnid Ecology and Behavior
- Avian ecology and behavior
- Species Distribution and Climate Change
University of Otago
2016-2025
Helmholtz Zentrum München
2023
Technical University of Munich
2023
Allan Wilson Centre
2012-2022
University of Ibadan
2019
University of Canterbury
2005-2016
SIB Swiss Institute of Bioinformatics
2016
University of Lausanne
2016
Department of Conservation
2016
Massey University
2016
Antimicrobial resistance (AMR) is a serious threat to global public health, but obtaining representative data on AMR for healthy human populations difficult. Here, we use metagenomic analysis of untreated sewage characterize the bacterial resistome from 79 sites in 60 countries. We find systematic differences abundance and diversity genes between Europe/North-America/Oceania Africa/Asia/South-America. taxonomy only explains minor part variation that observe. no evidence cross-selection...
We present a draft genome sequence of the platypus, Ornithorhynchus anatinus. This monotreme exhibits fascinating combination reptilian and mammalian characters. For example, platypuses have coat fur adapted to an aquatic lifestyle; platypus females lactate, yet lay eggs; males are equipped with venom similar that reptiles. Analysis first aligned these features genetic innovations. find reptile proteins been co-opted independently from same gene families; milk protein genes conserved despite...
Amphibians are rapidly vanishing. At the same time, it is most likely that number of amphibian species highly underestimated. Recent DNA barcoding work has attempted to define a threshold between intra- and inter-specific genetic distances help identify candidate species. In groups with high extinction rates poorly known boundaries, like amphibians, such tools may provide way evaluate richness.Here we analyse published new 16S rDNA sequences from 60 frog Amazonia-Guianas obtain minimum...
Microsatellites are the genetic markers of choice for many population studies, but must be isolated de novo using recombinant approaches where prior data lacking. Here we utilized high-throughput genomic sequencing technology to produce millions base pairs short fragment reads, which were screened with bioinformatics toolsets identify primers that amplify polymorphic microsatellite loci. Using this approach 13 microsatellites blue duck (Hymenolaimus malacorhynchos), a species limited...
We examined the publication records of a cohort 168 life scientists in field ecology and evolutionary biology to assess gender differences research performance. Clear discrepancies rate between men women appear very early their careers this has consequences for subsequent citation work. show that recently proposed index designed rank fairly is fact strongly biased against female researchers, advocate modified on more equitable basis.
While in recent years environmental DNA (eDNA) metabarcoding surveys have shown great promise as an alternative monitoring method, the integration into existing marine programs may be confounded by dispersal of eDNA signal. Currents and tidal influences could transport over distances, inducing false-positive species detection, leading to inaccurate biodiversity assessments and, ultimately, mismanagement environments. In this study, we determined ability distinguish localized signals obtained...
Interest in developing gene drive systems to control invasive species is growing, with New Zealand reportedly considering the nascent technology as a way locally eliminate mammalian pests that threaten its unique flora and fauna. If drives successfully eradicated these populations, many would rejoice, but what are possible consequences? Here, we explore risk of accidental spread posed by self-propagating technologies, highlight new designs might achieve better outcomes, explain why need open...
The kākāpō is a flightless parrot endemic to New Zealand. Once common in the archipelago, only 201 individuals remain today, most of them descending from an isolated island population. We report first genome-wide analyses species, including high-quality genome assembly for kākāpō, one chromosome-level reference genomes sequenced by Vertebrate Genomes Project (VGP). also and analyzed 35 modern sole surviving population 14 extinct mainland While theory suggests that such small likely have...
Abstract The tuatara ( Sphenodon punctatus )—the only living member of the reptilian order Rhynchocephalia (Sphenodontia), once widespread across Gondwana 1,2 —is an iconic species that is endemic to New Zealand 2,3 . A key link now-extinct stem reptiles (from which dinosaurs, modern reptiles, birds and mammals evolved), provides insights into ancestral amniotes 2,4 Here we analyse genome tuatara, which—at approximately 5 Gb—is among largest vertebrate genomes yet assembled. Our analyses...
Telomeres play a fundamental role in the protection of chromosomal DNA and regulation cellular senescence. Recent work human epidemiology evolutionary ecology suggests adult telomere length (TL) may reflect past physiological stress predict subsequent morbidity mortality, independent chronological age.Several different methods have been developed to measure TL, each offering its own technical challenges. The aim this review is provide an overview advantages drawbacks method for researchers,...
Tandem repeats are genomic elements that prone to changes in repeat number and thus often polymorphic. These sequences found at a high density the start of human genes, gene’s promoter. Increasing empirical evidence suggests length variation these tandem can affect gene regulation. One class repeats, known as microsatellites, rapidly alter number. Some genetic induced by microsatellites is result phenotypic variation. Recently, our group developed novel method for measuring evolutionary...
Sexual fate is no longer seen as an irreversible deterministic switch set during early embryonic development but ongoing battle for primacy between male and female developmental trajectories. That sexual not final must be actively maintained via continuous suppression of the opposing network creates potential flexibility into adulthood. In many fishes, sexuality only extremely plastic, sex change a usual adaptive part life cycle. Sequential hermaphrodites begin one sex, changing sometime...
Ovary-to-testis transformation in a sex-changing fish involves transcriptomic and epigenomic reprogramming.