Gemma Catherine Ma

Dr. Gemma Catherine Ma

Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
orcid

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 May 2019 in Microbial Ecology
Verified
Journal Article
Closed access
PDF file
GMGemma Catherine Ma
Gemma Catherine Ma
KWKate A. Worthing
Kate A. Worthing
MWMichael Ward
Michael Ward
JNJacqueline M. Norris
Jacqueline M. Norris

1 February 2013 in Veterinary Parasitology
Verified
Journal Article
Closed access
GMGemma Catherine Ma
Gemma Catherine Ma
MDMichelle Dennis
Michelle Dennis
KRKarrie Rose
Karrie Rose
DSDavid Spratt
David Spratt
DSDerek Spielman
Derek Spielman

1 May 2020 in Acta Tropica
Verified
Journal Article
Closed access
GMGemma Catherine Ma
Gemma Catherine Ma
JNJacqueline M. Norris
Jacqueline M. Norris
KMKaren O. Mathews
Karen O. Mathews
SCShona Chandra
Shona Chandra
JŠJan Šlapeta
Jan Šlapeta
MWMichael Ward
Michael Ward

5 March 2023 in Animals
Verified
Journal Article
Open access
PDF file
KOKarl Oosthuizen
Karl Oosthuizen
Bianca WaudBianca Waud
Bianca Waud
JRJioji Ravulo
Jioji Ravulo
Sabrina LomaxSabrina Lomax
Sabrina Lomax
GMGemma Catherine Ma
Gemma Catherine Ma
Human–animal bonds, by providing social support, have been shown to improve the health and wellbeing of pet owners, especially those experiencing a crisis situation. The human–animal bond for people in crisis situations is complex and multifaceted, as it has shown to improve health, whilst it can also discourage people from seeking help, due to fears of leaving their pet behind. The purpose of the study is to capture and to assess the role of the human–animal bond for people in crisis situations. Semi-structured interviews were conducted with pet owners involved in the RSPCA NSW Community Programs (n = 13) in 2021 and 2022. The findings of the study indicate that the human–animal bond is highly valued by people experiencing crisis situations, that the human–animal bonds can affect people’s ability to seek help or refuge, and that the human–animal bond helps people to recover after a crisis. The findings suggest that community crisis support services, prison systems, hospital systems, emergency housing, and government legislation should recognize and aim to preserve this bond to provide the best help for people experiencing crisis situations.

19 June 2020 in Animals
Verified
Journal Article
Open access
PDF file
GMGemma Catherine Ma
Gemma Catherine Ma
AWAnn-Margret Withers
Ann-Margret Withers
JSJessica Spencer
Jessica Spencer
JNJacqueline M. Norris
Jacqueline M. Norris
MWMichael Ward
Michael Ward
Dogs are important companions to people but can also present challenges to health and safety of communities if their populations are not effectively managed. Dog population management (DPM) is often undertaken by individual dog owners; however, some communities require additional DPM interventions, especially when veterinary services are unavailable or underutilised. This study evaluated the effectiveness of a DPM intervention conducted in 13 communities between September 2016 and November 2019 and assessed the utility of routinely collected data—program metrics and secondary data collected by local governments—to measure indicators of impacts. The intervention resulted in significant increases in the proportion of dogs presenting that were microchipped and surgically sterilised in participating communities. The intervention also resulted in significant reductions in dog attack incidents and euthanasia of dogs in council pounds in communities that participated for three or more years. Ongoing monitoring and evaluation of DPM interventions is critical to determine if impacts are being achieved. This study demonstrates the potential benefits of a DPM intervention for community safety and dog welfare and highlights the utility of routinely collected data. We also suggest benchmarks for indicators of community engagement to guide planning and monitoring of similar interventions.

13 February 2020 in Parasites & Vectors
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Journal Article
Open access
PDF file
BOBronwyn Orr
Bronwyn Orr
GMGemma Catherine Ma
Gemma Catherine Ma
WKWei Ling Koh
Wei Ling Koh
RMRichard Malik
Richard Malik
JNJacqueline M. Norris
Jacqueline M. Norris
Jan ŠlapetaJan Šlapeta
Jan Šlapeta
Background: Canine heartworm disease, caused byDirofilaria immitis, has global veterinary importance. In Australia, the prevalence of canine heartworm infection decreased markedly following the introduction of over-the-counter macrocyclic lactones. We aimed to estimate the prevalence of canine heartworm infection in at-risk populations of dogs in eastern Australia and analyse published prevalence data from Australia.Methods: In total, 566 dogs from eastern Australia were tested for the presence ofD. immitisantigen. Four cohorts were studied: pig-hunting dogs from Queensland (Cohort 1,n = 104), dogs from remote New South Wales (NSW) (Cohort 2,n = 332), urban pets from rural NSW (Cohort 3,n = 45) and ex-racing Greyhounds from Sydney, NSW (Cohort 4,n = 85). Serum samples were screened forD. immitisantigen using a reference laboratory microwell-based assay (DiroChek®) or a point-of-care immunochromatography test kit (Anigen Rapid®). Risk factors associated with the odds ofD. immitisantigen seropositivity were identified using binary logistic regression models. Seropositive blood samples were tested for the presence and quantity ofD. immitisDNA using a species specific real-time (q)PCR assay. A metanalysis of the Australian canine heartworm literature was conducted.Results: The prevalence of dirofilariasis in pig-hunting dogs from Queensland (Cohort 1) was 12.5% (95% CI: 6.5–18.9%), with a subpopulation of dogs from Central Queensland having a prevalence of 21% (95% CI: 12.3–33.4%). Age was significantly associated withD. immitisantigen seropositivity (increased risk with increased age). The odds of being > 5 yearsversus≤ 5 years was 3.7-times (95% CI: 1.1–12.5) greater in antigen positive versus antigen negative dogs. NoD. immitisantigen positive dogs were detected in dogs from NSW (Cohorts 2–4). The Australian canine heartworm disease literature includes 98 peer-reviewed publications (1901–2019) with 30 studies reporting onD. immitisprevalence in dogs. Throughout the publication peak period (1980s), the primary antemortem diagnostic test was detection of microfilariae.Conclusions: Canine heartworm infection in dogs used for pig hunting is a previously unexplored topic in Australia. Pig-hunting dogs are infected with canine heartworm in Queensland, Australia, placing pet dogs and cats at increased risk of infection.