A5059503127- Amphibian and Reptile Biology
- Animal Behavior and Reproduction
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Turtle Biology and Conservation
- Animal Vocal Communication and Behavior
- Animal and Plant Science Education
- Bat Biology and Ecology Studies
- Plant and animal studies
- Antimicrobial Peptides and Activities
- Aquaculture disease management and microbiota
- Ecology and Vegetation Dynamics Studies
- Sports injuries and prevention
- Physiological and biochemical adaptations
- Marine animal studies overview
- Winter Sports Injuries and Performance
- Neurobiology and Insect Physiology Research
- Microbial infections and disease research
- Sports Performance and Training
- Identification and Quantification in Food
- Evolution and Genetic Dynamics
- Primate Behavior and Ecology
- Environmental DNA in Biodiversity Studies
- Mosquito-borne diseases and control
- Rabies epidemiology and control
University of Otago
2014-2023
National Oceanography Centre
2023
Education New Zealand
2023
University of the Witwatersrand
1984-2022
University of Alabama
2001-2019
Liberty University
2018
Australian Institute of Tropical Health and Medicine
2014
James Cook University
2014
International Union for Conservation of Nature (Bangladesh)
2012
University of California, Los Angeles
2001
Summary 1. Altered global climates in the 21st century pose serious threats for biological systems and practical actions are needed to mount a response species at risk. 2. We identify management from across world diverse disciplines that applicable minimizing loss of amphibian biodiversity under climate change. Actions were grouped three thematic areas intervention: (i) installation microclimate microhabitat refuges; (ii) enhancement restoration breeding sites; (iii) manipulation hydroperiod...
Archey's frog Leiopelma archeyi is a critically endangered New Zealand endemic species. The discovery of the emerging infectious disease, chytridiomycosis, in wild populations this raised concern that disease may drive species to extinction. Twelve wild-caught frogs naturally infected with amphibian chytrid fungus Batrachochytrium dendrobatidis were monitored captivity by observing clinical signs, measuring weight gain, and performing repeated PCR tests. Eight treated topical...
Abstract Amphibians are currently the most threatened group of vertebrates worldwide, and introduced fauna play a major role in their decline. The control predators to protect endangered species is often based on predation rates derived from diet studies predators, but prey detection probabilities using different techniques variable. We measured detectability frogs as prey, morphological DNA ‐based analyses, stomachs faeces four mammal that have been many areas world. Frogs ( L itoria...
Abstract A detailed study was made of the natural calling behaviour male painted reed frogs in wild. Comprehensive minute by records vocal activity males simultaneously breeding chorus were generated over a 19‐night period using multi‐channel event recorder. With few exceptions, which called either spanned or extended beyond time window when females sought mates chorus. Males varied little persistence and majority produced advertisement calls during each period. Aggressive interactions...
Abstract Compensatory growth, or catch‐up occurs when an organism grows faster than the optimal rate after a period of growth restriction. The evolved maximizes animal's fitness potential while preserving tissue quality. Rapid compensatory allows to achieve adult size closer that unrestricted conspecific. However, this accelerated may come at cost impaired later in life due accumulated cellular damage. Amphibians are interesting, yet neglected, group which observe effects because their...
The New Zealand native frogs, family Leiopelmatidae, are among the most archaic in world. Leiopelma hochstetteri (Hochstetter's frog) is a small, semi-aquatic frog with numerous, fragmented populations scattered across Zealand's North Island. We characterized major histocompatibility complex (MHC) class II B gene (DAB) L. from spleen transcriptome, and then compared its diversity to neutral microsatellite markers assess adaptive genetic of five ("evolutionarily significant units", ESUs)....
The decline of amphibians has been international concern for more than two decades, and the global spread introduced fauna is a major factor in this decline. Conservation management decisions to implement control are often based on diet studies. One most common metrics report studies Frequency Occurrence (FO), but can be difficult interpret, as it does not include temporal perspective. Here, we examine potential FO data derived from molecular analysis inform invasive species management,...
1. The numbers of male and female Painted Reed Frogs (Hyperolius marmoratus) were monitored over 28 consecutive nights at the height breeding season. Despite arguments that should be highly correlated we found only 32% variance in was explained by number males present. 2. To assess our prediction attendance determined considerations other than optimal access to mates modelled patterns using a wide range environmental variables. 3. Male best described different models. For males, 76.6%...
The susceptibility of Archey's frog Leiopelma archeyi to Batrachochytrium dendrobatidis (Bd) is unknown, although one large population thought have declined sharply due chytridiomycosis. As primary infection experiments were not permitted in this endangered New Zealand species, 6 wild-caught L. that naturally cleared infections with Bd while captivity exposed again assess their immunity. These frogs from an infected at Whareorino, which has no known declines. All became reinfected low...
This report describes the investigations into cause and treatment of metabolic bone disease (MBD) in captive native New Zealand frogs (Leiopelma spp.) role fluoride disease. MBD was diagnosed Leiopelma archeyi hochstetteri 2008 at three institutions: Auckland Zoo, Hamilton University Otago. Most these had originally been held Canterbury for several years (2000–2004) but some were collected directly from wild. Radiographs on archived live showed that present Canterbury, a lower rate (3%) than...
Abstract Numerous models have attempted to explain the evolution of extravagant male ornaments found in many species. Inter‐sexual indicator postulate that evolved as signals quality, and females use these select highest quality males. These involve three traits – female preferences specific expectations about relative strengths phenotypic relationships between traits. Using data from anuran species, we assessed using meta‐analysis. The correlations were expected by models, providing support...
Patterns of habitat-use are used widely as management guides in the conservation wildlife. However, even for relatively well-studied species, such Green and Golden Bell Frog Litoria aurea, our knowledge specific habitat requirements is lacking.This study sought to compare patterns breeding shown by L. aurea New South Wales (NSW), Victoria Zealand (where it a feral species), with those described an earlier Pyke White (1996), review status this species Victoria,and relate its observed...
Abstract A reappraisal of the conservation status New Zealand frog fauna is presented using 2008 version Threat Classification System. Of Zealand's four extant endemic species, three are judged to be ‘Threatened’ (Leiopelma hamiltoni being ‘Nationally Critical’, and L. pakeka archeyi Vulnerable’) one ‘At Risk’ (L. hochstetteri ‘Declining’). Three Leiopelma species listed as extinct—they known from bone deposits in caves throughout country until some time last 1000 years. introduced...
Abstract The use of biotelemetry in amphibian behaviour, migration, dispersal and homing research has increased with the miniaturisation improved reliability telemetry equipment. Here we synthesise methods outcomes from past two decades published studies ( n = 128; 1 January 2000–31 December 2020). We discuss trends study duration, transmitter weight attachment methods. most commonly used harness designs for external surgical internal implantation are described, benefits potential problems...