Hugo B Harrison

Hugo B Harrison
James Cook University · ARC Centre of Excellence for Coral Reef Studies

BSc, GCertSc, PhD

About

93
Publications
16,829
Reads
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4,905
Citations
Citations since 2017
41 Research Items
4475 Citations
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20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
Additional affiliations
June 2013 - present
James Cook University
Position
  • Research Associate
January 2013 - June 2013
James Cook University Brisbane
Position
  • Research Officer
Education
January 2008 - December 2012
James Cook University
Field of study
  • Marine Biology
September 2007 - December 2007
James Cook University
Field of study
  • Marine Biology
September 2001 - July 2006
The University of Edinburgh
Field of study
  • Genetics

Publications

Publications (93)
Article
Full-text available
Microsatellites are often considered ideal markers to investigate ecological processes in animal populations. They are regularly used as genetic barcodes to identify species, individuals, and infer familial relationships. However, such applications are highly sensitive the number and diversity of microsatellite markers, which are also prone to erro...
Article
Genetic parentage analyses provide a practical means with which to identify parent-offspring relationships in the wild. In Harrison et al. (2013a), we compare three methods of parentage analysis and showed that the number and diversity of microsatellite loci were the most important factors defining the accuracy of assignments. Our simulations revea...
Article
Parentage studies and family reconstructions have become increasingly popular for investigating a range of evolutionary, ecological and behavioural processes in natural populations. However, a number of different assignment methods have emerged in common use and the accuracy of each may differ in relation to the number of loci examined, allelic div...
Article
Full-text available
Marine reserves, areas closed to all forms of fishing, continue to be advocated and implemented to supplement fisheries and conserve populations. However, although the reproductive potential of important fishery species can dramatically increase inside reserves, the extent to which larval offspring are exported and the relative contribution of rese...
Article
Full-text available
The El Niño Southern Oscillation (ENSO) is the strongest source of interannual global climate variability, and extreme ENSO events are projected to increase in frequency under climate change. Interannual variability in the Coral Sea circulation has been associated with ENSO, although uncertainty remains regarding ENSO's influence on hydrodynamics a...
Article
Full-text available
Social hierarchies within groups define the distribution of resources and provide benefits that support the collective group or favor dominant members. The progression of individuals through social hierarchies is a valuable characteristic for quantifying population dynamics. On coral reefs, some clownfish maintain size-based hierarchical communitie...
Preprint
Full-text available
Ocean warming is increasing the incidence, scale, and severity of global-scale coral bleaching and mortality, culminating in the third global coral bleaching event that occurred during record marine heatwaves of 2014-2017. While local effects of these events have been widely reported, the global implications remain unknown. Analysis of 15,066 reef...
Article
Full-text available
The global impacts of climate change are evident in every marine ecosystem. On coral reefs, mass coral bleaching and mortality have emerged as ubiquitous responses to ocean warming, yet one of the greatest challenges of this epiphenomenon is linking information across scientific disciplines and spatial and temporal scales. Here we review some of th...
Article
Full-text available
Offshore platforms, subsea pipelines, wells and related fixed structures supporting the oil and gas (O&G) industry are prevalent in oceans across the globe, with many approaching the end of their operational life and requiring decommissioning. Although structures can possess high ecological diversity and productivity, information on how they intera...
Article
Full-text available
1. Understanding larval connectivity patterns in exploited fishes is a fundamental prerequisite for developing effective management strategies and assessing the vulnerability of a fishery to recruitment overfishing and localised extinction. To date, however, researchers have not considered how regional variations in fishing pressure also influence...
Preprint
Full-text available
Social hierarchies within groups define the distribution of resources and provide benefits that support the collective group or favor dominant members. The progression of individuals through social hierarchies is a valuable characteristic for quantifying population dynamics. On coral reefs, a number of small site-attached fish maintain size-based h...
Article
Fisheries management relies on various catch and effort controls to preserve spawning stock biomass and maximize sustainable yields while limiting fishery impacts on marine ecosystems. These include species-specific minimum or maximum size limits to protect either small non-reproductive subadults, a portion of reproductively mature adults, or large...
Article
Full-text available
Population outbreaks of crown-of-thorns seastars (CoTS; Acanthaster spp.) are contributing to extensive coral loss and reef degradation throughout the Indo-Pacific, but the causes and underlying mechanisms of population maintenance and outbreaks are equivocal. Two recent publications suggest that, in addition to outbreeding sexual reproduction, ase...
Article
Significance Networks of no-take marine reserves support local fisheries by ensuring a consistent supply of juvenile fish. We measured larval dispersal patterns for a highly exploited coral grouper and quantified temporal fluctuations in the recruitment contribution from a network of no-take marine reserves on the Great Barrier Reef. Although recru...
Article
Full-text available
A central issue in evolutionary ecology is how patterns of dispersal influence patterns of relatedness in populations. In terrestrial organisms, limited dispersal of offspring leads to groups of related individuals. By contrast, for most marine organisms, larval dispersal in open waters is thought to minimize kin associations within populations. Ho...
Article
Full-text available
Ocean warming threatens the functioning of coral reef ecosystems by inducing mass coral bleaching and mortality events. The link between temperature and coral bleaching is now well-established based on observations that mass bleaching events usually occur when seawater temperatures are anomalously high. However, times of high heat stress but withou...
Article
Full-text available
Severe bleaching events caused by marine heat waves over the past four decades have now affected almost every coral reef ecosystem in the world. These recurring events have led to major losses of coral cover, with adverse consequences for tropical reef ecosystems and the people who depend on them. Here, we document two consecutive and widespread co...
Article
Full-text available
Larval dispersal is a critically important yet enigmatic process in marine ecology, evolution, and conservation. Determining the distance and direction that tiny larvae travel in the open ocean continues to be a challenge. Our current understanding of larval dispersal patterns at management-relevant scales is principally and separately informed by...
Preprint
Full-text available
Ocean warming threatens the functioning of coral reef ecosystems by inducing mass coral bleaching and mortality events. The link between temperature and coral bleaching is now well-established based on observations that mass bleaching events usually occur when seawater temperatures are anomalously high. However, times of high heat stress but withou...
Preprint
Full-text available
Ocean warming threatens the functioning of coral reef ecosystems by inducing mass coral bleaching and mortality events. The link between temperature and coral bleaching is now well-established based on observations that mass bleaching events usually occur when seawater temperatures are anomalously high. However, times of high heat stress but withou...
Article
Full-text available
Many vertebrates form monogamous pairs to mate and care for their offspring. However, genetic tools have increasingly shown that many offspring arise from matings outside of the monogamous pair bond. Social monogamy is relatively common in coral reef fishes, but there have been relatively few studies that have confirmed monogamy or extra‐pair repro...
Article
Diagnostic molecular markers are an essential tool in the study of species' ecology and evolution, particularly in closely related and sympatric species. Furthermore, the increasing awareness of wild-hybrids has led to a renewed interest in rapid diagnostic assays. Here, we test the ability of two mitochondrial (Cytb and COI) and two nuclear marker...
Article
Full-text available
Removing individuals from a wild population can affect the availability of prospective mates and the outcome of competitive interactions, with subsequent effects on mating patterns and sexual selection. Consequently, the rate of harvest-induced evolution is predicted to be strongly dependent on the strength and dynamics of sexual selection yet, the...
Article
Tropical reef systems are transitioning to a new era in which the interval between recurrent bouts of coral bleaching is too short for a full recovery of mature assemblages. We analyzed bleaching records at 100 globally distributed reef locations from 1980 to 2016. The median return time between pairs of severe bleaching events has diminished stead...
Article
Dispersal kernels are the standard method in biology for describing and predicting the relationship between dispersal and distance. Statistically fitted dispersal kernels allow observations of a limited number of dispersal events to be extrapolated across a wider landscape, and form the basis of a wide range of theories and methods in ecology, evol...
Article
Full-text available
Coral reefs are highly diverse ecosystems, where numerous closely related species often coexist. How new species arise and are maintained in these high geneflow environments have been long-standing conundrums. Hybridization and patterns of introgression between sympatric species provide a unique insight into the mechanisms of speciation and the mai...
Article
Full-text available
Larval dispersal is a critical yet enigmatic process in the persistence and productivity of marine metapopulations. Empirical data on larval dispersal remain scarce, hindering the use of spatial management tools in efforts to sustain ocean biodiversity and fisheries. Here we document dispersal among subpopulations of clownfish (Amphiprion percula)...
Article
During 2015-2016, record temperatures triggered a pan-tropical episode of coral bleaching, the third global-scale event since mass bleaching was first documented in the 1980s. Here we examine how and why the severity of recurrent major bleaching events has varied at multiple scales, using aerial and underwater surveys of Australian reefs combined w...
Article
Specific patterns in the initiation and spread of reef-wide outbreaks of crown-of-thorns starfish are important, both to understand potential causes (or triggers) of outbreaks and to develop more effective and highly targeted management and containment responses. Using analyses of genetic diversity and structure (based on 17 microsatellite loci), t...
Article
Full-text available
Larval dispersal is the key process by which populations of most marine fishes and invertebrates are connected and replenished. Advances in larval tagging and genetics have enhanced our capacity to track larval dispersal, assess scales of population connectivity, and quantify larval exchange among no-take marine reserves and fished areas. Recent st...
Preprint
Full-text available
Dispersal kernels are the standard method for describing and predicting the relationship between dispersal strength and distance. Statistically-fitted dispersal kernels allow observations of a limited number of dispersal events to be extrapolated across a wider landscape, and form the basis of a wide range of theories and methods in ecology, evolut...
Article
Full-text available
Marine reserve networks must ensure the representation of important conservation features, and also guarantee the persistence of key populations. For many species, designing reserve networks is complicated by the absence or limited availability of spatial and life-history data. This is particularly true for data on larval dispersal, which has only...
Article
Acute environmental disturbances impact on habitat quality and resource availability, which can reverberate through trophic levels and become apparent in species’ dietary composition. In this study, we observed a distinct dietary shift of newly settled and juvenile coral trout (Plectropomus maculatus) following severe coral reef habitat degradation...
Article
The development of parentage analysis to track the dispersal of juvenile offspring has given us unprecedented insight into the population dynamics of coral reef fishes. These tools now have the potential to inform fisheries management and species conservation, particularly for small fragmented populations under threat from exploitation and disturba...
Article
Full-text available
Understanding the processes that shape patterns of genetic structure across space is a central aim of landscape genetics. However, it remains unclear how geographic features and environmental variables shape gene flow, particularly for marine species in large complex seascapes. Here, we evaluated the genomic composition of the two-band anemonefish...
Article
Full-text available
Many coral reef fishes exhibit unique reproductive strategies that can play a central role in conservation programs. Cardinalfishes (f. Apogonidae) are all paternal mouthbrooders, where the male holds the fertilised eggs in his mouth until they hatch. Males may fertilise the eggs of multiple females resulting in polygyny and skewed reproductive suc...
Article
Full-text available
Population outbreaks of crown-of-thorns starfish (Acanthaster spp.) represent one of the most significant biological disturbances on Indo-Pacific coral reefs. Here, we combine 15 published and 11 newly isolated polymorphic microsatellite markers from the coral-eating starfish, A. cf. planci and describe their integration into four multiplex PCRs. A...
Article
Full-text available
Anemonefish are iconic symbols of coral reefs and have become model systems for research on larval dispersal and population connectivity in coral reef fishes. Here we present 24 novel microsatellite markers across four species of anemonefish and also test 35 previously published markers for cross-amplification on two anemonefish species in order to...
Article
Full-text available
Dispersal is a crucial ecological process, driving population dynamics and defining the structure and persistence of populations. Measuring demographic connectivity between discreet populations remains a long-standing challenge for most marine organisms because it involves tracking the movement of pelagic larvae. Recent studies demonstrate local co...
Article
Full-text available
Parentage analysis is an important tool for identifying connectivity patterns in coral reef fishes, but often requires numerous highly polymorphic markers. We isolated 21 polymorphic microsatellite markers from the stripey snapper, Lutjanus carponotatus and describe their integration into three multiplex PCRs. All markers were highly polymorphic wi...
Data
Figure S1. Decision tree that lead to correct and incorrect assignments in parentage analysis.
Data
Data S1. R scripts and example data to measure the accuracy of parentage analysis for simulated parent and offspring genotypes.
Data
Data S3. Example result file of a parentage analysis with all possible decision outcomes.
Data
Data S2. Example offspring file of all possible outcomes of a parentage test.
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##
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##Assembly-Data-START## Assembly Method :: Genome Sequencer FLX System Software v. 1 Sequencing Technology :: 454 ##Assembly-Data-END##