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postgraduate thesis: Ecological risk assessment and management of invasive freshwater fish species from aquarium and ornamental trades in Hong Kong

TitleEcological risk assessment and management of invasive freshwater fish species from aquarium and ornamental trades in Hong Kong
Authors
Issue Date2013
PublisherThe University of Hong Kong (Pokfulam, Hong Kong)
Citation
Ho, C. [何志輝]. (2013). Ecological risk assessment and management of invasive freshwater fish species from aquarium and ornamental trades in Hong Kong. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5099114
AbstractSince globalization have promoted the ornamental trade and accelerated the movement of freshwater fishes around the world, non-native species pose a high potential to be released into local freshwater habitats, and to spread and establish as invasive and nuisance species with adverse ecological, economic and social impacts. This study aimed to investigate the potential of the ornamental freshwater fish trade as an invasion pathway in Hong Kong, assess the ecological risk of common aquarium freshwater fish species being traded in the local market, identify species of concern and recommend ways for their management with a view to minimizing biological invasion risk associated with the aquarium trade. Based on a series of systematic market surveys through visiting 46 major aquarium shops in Hong Kong, about 167 freshwater fish species were found in the local aquarium trade between summer 2012 and spring 2013. Twenty-five species were randomly selected to go through two standard ecological risk assessment protocols (i.e., FISK & IFRA). The assessment results indicated that the goldfish (Carassius auratus), common carp (Cyprinus carpio carpio) and Wel’s catfish (Silurus glanis) have a high invasive risk in Hong Kong. The ornamental trade is one of the significant sources of freshwater fish invasions in Hong Kong. An integrated invasive species management plan is recommended to apply and implement in Hong Kong. The key elements of this management plan include (1) development of law and regulation on invasive species, (2) establishment of an early detection programme (like the current study), (3) implementation of control and eradication measures, (4) setting up invasive species handling guidelines and (5) fostering public education programs on biological invasion prevention. The plan should involve the participation of all stakeholders, such as government, industry, social community organization and public in order to engage them to jointly effectively tackle and manage invasive species and thereby conserve Hong Kong’s aquatic biodiversity.
DegreeMaster of Science in Environmental Management
SubjectIntroduced freshwater organisms - Environmental aspects - China - Hong Kong
Introduced fishes - Environmental aspects - China - Hong Kong
Dept/ProgramEnvironmental Management
Persistent Identifierhttp://hdl.handle.net/10722/194580

 

DC FieldValueLanguage
dc.contributor.authorHo, Chi-fai-
dc.contributor.author何志輝-
dc.date.accessioned2014-02-11T23:10:31Z-
dc.date.available2014-02-11T23:10:31Z-
dc.date.issued2013-
dc.identifier.citationHo, C. [何志輝]. (2013). Ecological risk assessment and management of invasive freshwater fish species from aquarium and ornamental trades in Hong Kong. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5099114-
dc.identifier.urihttp://hdl.handle.net/10722/194580-
dc.description.abstractSince globalization have promoted the ornamental trade and accelerated the movement of freshwater fishes around the world, non-native species pose a high potential to be released into local freshwater habitats, and to spread and establish as invasive and nuisance species with adverse ecological, economic and social impacts. This study aimed to investigate the potential of the ornamental freshwater fish trade as an invasion pathway in Hong Kong, assess the ecological risk of common aquarium freshwater fish species being traded in the local market, identify species of concern and recommend ways for their management with a view to minimizing biological invasion risk associated with the aquarium trade. Based on a series of systematic market surveys through visiting 46 major aquarium shops in Hong Kong, about 167 freshwater fish species were found in the local aquarium trade between summer 2012 and spring 2013. Twenty-five species were randomly selected to go through two standard ecological risk assessment protocols (i.e., FISK & IFRA). The assessment results indicated that the goldfish (Carassius auratus), common carp (Cyprinus carpio carpio) and Wel’s catfish (Silurus glanis) have a high invasive risk in Hong Kong. The ornamental trade is one of the significant sources of freshwater fish invasions in Hong Kong. An integrated invasive species management plan is recommended to apply and implement in Hong Kong. The key elements of this management plan include (1) development of law and regulation on invasive species, (2) establishment of an early detection programme (like the current study), (3) implementation of control and eradication measures, (4) setting up invasive species handling guidelines and (5) fostering public education programs on biological invasion prevention. The plan should involve the participation of all stakeholders, such as government, industry, social community organization and public in order to engage them to jointly effectively tackle and manage invasive species and thereby conserve Hong Kong’s aquatic biodiversity.-
dc.languageeng-
dc.publisherThe University of Hong Kong (Pokfulam, Hong Kong)-
dc.relation.ispartofHKU Theses Online (HKUTO)-
dc.rightsThe author retains all proprietary rights, (such as patent rights) and the right to use in future works.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject.lcshIntroduced freshwater organisms - Environmental aspects - China - Hong Kong-
dc.subject.lcshIntroduced fishes - Environmental aspects - China - Hong Kong-
dc.titleEcological risk assessment and management of invasive freshwater fish species from aquarium and ornamental trades in Hong Kong-
dc.typePG_Thesis-
dc.identifier.hkulb5099114-
dc.description.thesisnameMaster of Science in Environmental Management-
dc.description.thesislevelMaster-
dc.description.thesisdisciplineEnvironmental Management-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.5353/th_b5099114-
dc.date.hkucongregation2013-

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