Status and impacts to sea turtles in Vietnam

Nguyen Dang Ngai, Pham Van Chien
Author affiliations

Authors

  • Nguyen Dang Ngai Institute of Marine Environment and Resources, VAST, Vietnam
  • Pham Van Chien Institute of Marine Environment and Resources, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/18763

Keywords:

Sea turtle, decline, threats, breeding grounds.

Abstract

Sea turtles face a great danger of extinction because of human impacts, and the number of turtle occurrence is decreasing. By interviewing fishermen, coastal residents and authorities combined with field surveys in some places where turtles regularly lay eggs, such as Con Dao and Ninh Thuan, the results show that 05 species of sea turtles were found in Vietnam: The Green (Chelonia mydas), Hawksbill (Eretmochelys imbricata), Olive Ridley (Lepidochelys olivacea), Loggerhead (Caretta caretta) and Leatherback (Dermochelys coriacea). Among them, Green turtles are the most abundant and distributed in all surveyed localities; Hawksbill and Olive Ridley were smaller in number; and Loggerhead and Leatherback were the two species with the least number. Only 03 species remaining to breed on the beaches: Green, Olive Ridley, and Leatherback. The Hawksbill turtles used to lay eggs in the past but have been no longer recorded. Con Dao is a home for the largest number of breeding Green turtles. The reasons for the decline of turtles in Vietnam were the collection of eggs and nesting turtles, fisheries bycatch, development of coastal infrastructure and waste pollution, habitat degradation, and illegal trade in sea turtle products.

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References

Motani, R., 2009. The evolution of marine reptiles. Evolution: Education and Outreach, 2, 224–235.

Ruberg, E. J., Williams, T. D., and Elliott, J. E., 2021. Review of petroleum toxicity in marine reptiles. Ecotoxicology, 30, 525–536.

Groom, R. A., Griffiths, A. D., and Chaloupka, M., 2017. Estimating long-term trends in abundance and survival for nesting flatback turtles in Kakadu National Park, Australia. Endangered Species Research, 32, 203–211.

Putman, N. F., Mansfield, K. L., He, R., Shaver, D. J., and Verley, P., 2013. Predicting the distribution of oceanic-stage Kemp’s ridley sea turtles. Biology Letters, 9(5), 20130345.

Hamann, M., Cuong, C. T., Hong, N. D., Thuoc, P., and Hien, B. T. T., 2006. Distribution and abundance of marine turtles in the Socialist Republic of Viet Nam. Biodiversity & Conservation, 15, 3703–3720.

Institute of Ecology and Biological Resources, 2007. Vietnam Red data book. Publishing House for Science and Technology, 412 p. (in Vietnamese).

Traffic, S. A. I., 2004. The trade in marine turtle products in Vietnam. TRAFFIC Southeast Asia-Hanoi, Vietnam, 56 p.

Bo, D., and Minh, N. H., 2013. Estimated volume and production forecast of tuna resources in 2013-2014 in the offshore central coast of Vietnam. Journal of Earth Sciences and Environment, (29), 11–16. (in Vietnamese).

Giang, N. T., 2010. Study some biological charateristics of Green turtle (Chelonia mydas) in Con Dao Islands. The Journal of Agriculture and Development, Nong Lam University - Ho Chi Minh City, pp. 1–38. (in Vietnamese).

Agriculture, Fisheries and Conservation Department, Conservation of sea turtles in Hong Kong, 2018. Page http://www.afcd.gov.hk/english/conservation/con_fau/con_fau_sea/con_fau_sea_con/con_fau_sea_con_sat.html; accessed May 10, 2023.

Charuchinda, M., Sakamoto, W., Arai, N., and Monanunsap, S., 2002. Migration pattern of post-nesting green turtle in the gulf of Thailand. In Proceedings of the 3rd Workshop on SEASTAR2000 (pp. 53–57). Graduate School of Informatics, Kyoto University.

Vo, S. T., Hoang, X. B., Tran, D. H., Hua, T. T., Phan, K. H., Mai, X. D., and Nguyen, T. H., 2020. An evaluation of the effectiveness of marine conservation in Con Dao National Park, 2009–2019. Vietnam Journal of Marine Science and Technology, 20(4B), 243–250. (in Vietnamese).

Pilcher, N. J., Enderby, S., Stringell, T., and Bateman, L. (2000). Nearshore turtle

hatchling distribution and predation. Sea turtles of the Indo-Pacific. ASEAN Academic Press, London, pp. 151–166.

Heppel, S. S., Limpus, C. J., Crouse, D. T., Frazer, N. B., and Crowder, L. B., 1996. Population model analysis for the loggerhead sea turtle, Caretta caretta, in Queensland. Wildlife Research, 23(2), 143–161.

Hoai, N. D., Duc, T. T., Van, H. D., Son, H. P., Manh, H. N., Dinh, L. T., Xiaoyong, D., and Dac, V. N., 2019. Sedimentation rates and heavy metal concentrations in the tidal flats of North Vietnam. Polish Journal of Environmental Studies, 28(5), 3721–3733.

Thanh, T. D., Ngai, N. D., and Nhon, D. H., 2019. Estimating impact of climate change on the marine ecosystems in Vietnam. Proceedings of the National Scientific Conference: Biodiversity and Climate Change. Hanoi, Dec. 6, 2017, Publishing House for Science and Technology, pp. 31–45. (in Vietnamese).

Nhuan, M. C., and Bat, N. K., 2020. Research and assessment of fishing activities in the common fishing area of the Tonkin gulf, period 2017–2019. Journal of Agriculture and Rural Development, 3, 59–67. (in Vietnamese).

Sam, N. T., 2021. Developing cruise tourism in Vietnam: Advantages and disadvantages. Industry and Trade Magazine, 5 p. (in Vietnamese).

Luong, C. V., and Thung, D. C., 2019. Composition, distribution of seagrasses in Quang Ninh and Hai Phong - status and changes. Vietnam Journal of Marine Science and Technology, 19(3A), 333–342. (in Vietnamese).

Ngai, N. D., Cu, N. D., and Tuyet, D. A., 2013. Coral degradation and ability of rehabilitation of coral reefs in Co To Archipelago, Quang Ninh province, Vietnam. Deep Sea Research Part II: Topical Studies in Oceanography, 96, 50–55.

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Published

21-05-2024

How to Cite

Nguyen, D. N., & Pham, V. C. (2024). Status and impacts to sea turtles in Vietnam. Vietnam Journal of Marine Science and Technology, 24(2), 141–151. https://doi.org/10.15625/1859-3097/18763

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