Coastal road mortality of land crab during spawning migration

Abstract Land crabs are threatened by ocean sprawl even though they act as keystone consumers in coastal forest. Female land crabs must migrate to the sea annually to release larvae. However, they face the risk of road mortality which reduces ecological connectivity. We investigated the spawning mig...

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Autores principales:	Mi Ryu, Jae Geun Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c187c8a6503b4477839bab1df44309ce
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id	oai:doaj.org-article:c187c8a6503b4477839bab1df44309ce
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spelling	oai:doaj.org-article:c187c8a6503b4477839bab1df44309ce2021-12-02T14:02:54ZCoastal road mortality of land crab during spawning migration10.1038/s41598-021-86143-z2045-2322https://doaj.org/article/c187c8a6503b4477839bab1df44309ce2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86143-zhttps://doaj.org/toc/2045-2322Abstract Land crabs are threatened by ocean sprawl even though they act as keystone consumers in coastal forest. Female land crabs must migrate to the sea annually to release larvae. However, they face the risk of road mortality which reduces ecological connectivity. We investigated the spawning migration rhythm and the roadkill of land crab. Migrating crabs and roadkilled crabs were recorded on coastal roads in South Korea from July 28 to August 27 in 2018. Female land crabs mainly released zoeae during spring tide. The number of roadkilled crabs also synchronized with migration peak. A majority (95%) of 739 roadkilled carcasses were female crabs. As a result, the female crabs accounted only 29.6% of the population which can lead to a population decline. The roadkill density was the highest in a residential area without cement guardrails. These results suggest the mitigation actions for land crab roadkill. Among them, prohibiting vehicular traffic between sunset and midnight during spring tides in the breeding season should increase the viability of the population.Mi RyuJae Geun KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mi Ryu Jae Geun Kim Coastal road mortality of land crab during spawning migration
description	Abstract Land crabs are threatened by ocean sprawl even though they act as keystone consumers in coastal forest. Female land crabs must migrate to the sea annually to release larvae. However, they face the risk of road mortality which reduces ecological connectivity. We investigated the spawning migration rhythm and the roadkill of land crab. Migrating crabs and roadkilled crabs were recorded on coastal roads in South Korea from July 28 to August 27 in 2018. Female land crabs mainly released zoeae during spring tide. The number of roadkilled crabs also synchronized with migration peak. A majority (95%) of 739 roadkilled carcasses were female crabs. As a result, the female crabs accounted only 29.6% of the population which can lead to a population decline. The roadkill density was the highest in a residential area without cement guardrails. These results suggest the mitigation actions for land crab roadkill. Among them, prohibiting vehicular traffic between sunset and midnight during spring tides in the breeding season should increase the viability of the population.
format	article
author	Mi Ryu Jae Geun Kim
author_facet	Mi Ryu Jae Geun Kim
author_sort	Mi Ryu
title	Coastal road mortality of land crab during spawning migration
title_short	Coastal road mortality of land crab during spawning migration
title_full	Coastal road mortality of land crab during spawning migration
title_fullStr	Coastal road mortality of land crab during spawning migration
title_full_unstemmed	Coastal road mortality of land crab during spawning migration
title_sort	coastal road mortality of land crab during spawning migration
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c187c8a6503b4477839bab1df44309ce
work_keys_str_mv	AT miryu coastalroadmortalityoflandcrabduringspawningmigration AT jaegeunkim coastalroadmortalityoflandcrabduringspawningmigration
_version_	1718392106797498368

Coastal road mortality of land crab during spawning migration

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