Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China

In Hong Kong, studies on trading and human exploitation of adult Asian horseshoe crabs (Carcinoscorpius rotundicauda and Tachypleus tridentatus) are limited, with the last study dating back to 2005–2006. To identify how trading activities (e.g., for consumption as food, bycatch, and mercy release ac...

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Main Authors: Pui Yi Tang, Hei Wut Fong, Shan Yee Lee, Wing Tung Chang, Lee Yan Pang, Tin Yan Hui, Kelvin Jun Yin So
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Global Ecology and Conservation
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Online Access:http://www.sciencedirect.com/science/article/pii/S235198942400564X
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author Pui Yi Tang
Hei Wut Fong
Shan Yee Lee
Wing Tung Chang
Lee Yan Pang
Tin Yan Hui
Kelvin Jun Yin So
author_facet Pui Yi Tang
Hei Wut Fong
Shan Yee Lee
Wing Tung Chang
Lee Yan Pang
Tin Yan Hui
Kelvin Jun Yin So
author_sort Pui Yi Tang
collection DOAJ
description In Hong Kong, studies on trading and human exploitation of adult Asian horseshoe crabs (Carcinoscorpius rotundicauda and Tachypleus tridentatus) are limited, with the last study dating back to 2005–2006. To identify how trading activities (e.g., for consumption as food, bycatch, and mercy release activities) may threaten horseshoe crab populations in recent times, market surveys were conducted at five potential horseshoe crab trade outlets in Hong Kong in 2020 – 2021 in tandem with phone interviews with Hong Kong citizens to measure their knowledge/awareness on horseshoe crabs and relevant conservation measures. We also conducted in-depth interviews with 15 representatives from fishers’ associations and 20 from religious organisations on their views on horseshoe crab status in fisheries and mercy release. The market survey recorded a total of 80 adult horseshoe crabs for sale in seafood restaurants or fish stalls out of the 98 shops surveyed. In addition, phone interviews revealed a low level of awareness among Hong Kong citizens (N = 1005 respondents), with 53 % having no prior knowledge and never heard of “horseshoe crab”. However, such knowledge improved with an increased education level, particularly among those in the 50–59 age group and those who visited horseshoe crab habitats. Nearly all respondents (975) pledged not to consume horseshoe crabs upon being informed of their conservation status. Representatives from the fishers’ association reported that while there were no targeted fisheries for horseshoe crabs in Hong Kong, a small quantity of horseshoe crabs were captured as bycatch. Among the 12 religious organisations surveyed, 30 % of the respondents still conducted mercy release activities in Hong Kong. Some strongly disagreed with the need for government interventions on mercy release and were not willing to accept alternative official approaches. The above results revealed a considerable knowledge and awareness gap among the public and identified anthropogenic threats to Asian horseshoe crabs. To alleviate the situation, a pilot public awareness campaign was launched to increase public awareness and promote the conservation of horseshoe crabs in Hong Kong. We recommend strengthening the protection of local Asian horseshoe crabs through a combination of conservation management and public education.
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spelling doaj-art-b68ee28050704a61aadbb9558a3793122025-01-23T05:26:54ZengElsevierGlobal Ecology and Conservation2351-98942025-01-0157e03360Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, ChinaPui Yi Tang0Hei Wut Fong1Shan Yee Lee2Wing Tung Chang3Lee Yan Pang4Tin Yan Hui5Kelvin Jun Yin So6WWF-Hong Kong, Hong Kong SAR, ChinaWWF-Hong Kong, Hong Kong SAR, ChinaSchool of Biological Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong SAR, ChinaSchool of Biological Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong SAR, ChinaWWF-Hong Kong, Hong Kong SAR, ChinaScience Unit, Lingnan University, Hong Kong SAR, ChinaWWF-Hong Kong, Hong Kong SAR, China; Corresponding author.In Hong Kong, studies on trading and human exploitation of adult Asian horseshoe crabs (Carcinoscorpius rotundicauda and Tachypleus tridentatus) are limited, with the last study dating back to 2005–2006. To identify how trading activities (e.g., for consumption as food, bycatch, and mercy release activities) may threaten horseshoe crab populations in recent times, market surveys were conducted at five potential horseshoe crab trade outlets in Hong Kong in 2020 – 2021 in tandem with phone interviews with Hong Kong citizens to measure their knowledge/awareness on horseshoe crabs and relevant conservation measures. We also conducted in-depth interviews with 15 representatives from fishers’ associations and 20 from religious organisations on their views on horseshoe crab status in fisheries and mercy release. The market survey recorded a total of 80 adult horseshoe crabs for sale in seafood restaurants or fish stalls out of the 98 shops surveyed. In addition, phone interviews revealed a low level of awareness among Hong Kong citizens (N = 1005 respondents), with 53 % having no prior knowledge and never heard of “horseshoe crab”. However, such knowledge improved with an increased education level, particularly among those in the 50–59 age group and those who visited horseshoe crab habitats. Nearly all respondents (975) pledged not to consume horseshoe crabs upon being informed of their conservation status. Representatives from the fishers’ association reported that while there were no targeted fisheries for horseshoe crabs in Hong Kong, a small quantity of horseshoe crabs were captured as bycatch. Among the 12 religious organisations surveyed, 30 % of the respondents still conducted mercy release activities in Hong Kong. Some strongly disagreed with the need for government interventions on mercy release and were not willing to accept alternative official approaches. The above results revealed a considerable knowledge and awareness gap among the public and identified anthropogenic threats to Asian horseshoe crabs. To alleviate the situation, a pilot public awareness campaign was launched to increase public awareness and promote the conservation of horseshoe crabs in Hong Kong. We recommend strengthening the protection of local Asian horseshoe crabs through a combination of conservation management and public education.http://www.sciencedirect.com/science/article/pii/S235198942400564XAsian horseshoe crabsThreatsTachypleus tridentatusCarcinoscorpius rotundicaudaMercy release
spellingShingle Pui Yi Tang
Hei Wut Fong
Shan Yee Lee
Wing Tung Chang
Lee Yan Pang
Tin Yan Hui
Kelvin Jun Yin So
Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
Global Ecology and Conservation
Asian horseshoe crabs
Threats
Tachypleus tridentatus
Carcinoscorpius rotundicauda
Mercy release
title Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
title_full Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
title_fullStr Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
title_full_unstemmed Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
title_short Human exploitation of adult horseshoe crab and public awareness campaign in Hong Kong SAR, China
title_sort human exploitation of adult horseshoe crab and public awareness campaign in hong kong sar china
topic Asian horseshoe crabs
Threats
Tachypleus tridentatus
Carcinoscorpius rotundicauda
Mercy release
url http://www.sciencedirect.com/science/article/pii/S235198942400564X
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