Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China

Spawning and nursery habitats are critical in the conservation of horseshoe crabs. We examined the abundance and distribution of juveniles of 2 species of horseshoe crabs, Tachypleus tridentatus and Carcinoscorpius rotundicauda, in a mangrove-vegetated estuary (Pearl Bay, Guangxi, China). Intertidal...

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Autores principales:	CP Chen, MC Yang, LF Fan, G Qiu, YY Liao, HL Hsieh
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2015
Materias:	Biology (General) QH301-705.5 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/f451100ec2894a409db322c2234bdcb3
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spelling	oai:doaj.org-article:f451100ec2894a409db322c2234bdcb32021-11-18T09:18:34ZCo-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China1864-77821864-779010.3354/ab00641https://doaj.org/article/f451100ec2894a409db322c2234bdcb32015-12-01T00:00:00Zhttps://www.int-res.com/abstracts/ab/v24/n2/p117-126/https://doaj.org/toc/1864-7782https://doaj.org/toc/1864-7790Spawning and nursery habitats are critical in the conservation of horseshoe crabs. We examined the abundance and distribution of juveniles of 2 species of horseshoe crabs, Tachypleus tridentatus and Carcinoscorpius rotundicauda, in a mangrove-vegetated estuary (Pearl Bay, Guangxi, China). Intertidal sampling and measurement of environmental variables were carried out in October 2014 at 4 sites spanning ~6.3 km from the inner to the outer bay. Both species were found at the 2 innermost mangrove sites but not at the outer 2 sites. Densities were higher than recorded in previous studies, 0.24 ind. m-2 for C. rotundicauda and 0.05 ind. m-2 for T. tridentatus. Although only 12 of the latter species were found, they appeared to be more abundant in more seaward, energetic environments in poorly sorted sediments, whereas C. rotundicauda occurred in sediments with higher silt-clay and organic carbon content, and aggregated at the mangrove forest edges. These small-scale distribution differences are consonant with the species’ life histories, since only T. tridentatus migrates to the sea while C. rotundicaudata spends its entire life within or near mangrove habitats. International and national conservation strategies for these species should include further efforts to inventory critical habitats, such as Pearl Bay, in southeast Asia.CP ChenMC YangLF FanG QiuYY LiaoHL HsiehInter-ResearcharticleBiology (General)QH301-705.5MicrobiologyQR1-502ENAquatic Biology, Vol 24, Iss 2, Pp 117-126 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5 Microbiology QR1-502
spellingShingle	Biology (General) QH301-705.5 Microbiology QR1-502 CP Chen MC Yang LF Fan G Qiu YY Liao HL Hsieh Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
description	Spawning and nursery habitats are critical in the conservation of horseshoe crabs. We examined the abundance and distribution of juveniles of 2 species of horseshoe crabs, Tachypleus tridentatus and Carcinoscorpius rotundicauda, in a mangrove-vegetated estuary (Pearl Bay, Guangxi, China). Intertidal sampling and measurement of environmental variables were carried out in October 2014 at 4 sites spanning ~6.3 km from the inner to the outer bay. Both species were found at the 2 innermost mangrove sites but not at the outer 2 sites. Densities were higher than recorded in previous studies, 0.24 ind. m-2 for C. rotundicauda and 0.05 ind. m-2 for T. tridentatus. Although only 12 of the latter species were found, they appeared to be more abundant in more seaward, energetic environments in poorly sorted sediments, whereas C. rotundicauda occurred in sediments with higher silt-clay and organic carbon content, and aggregated at the mangrove forest edges. These small-scale distribution differences are consonant with the species’ life histories, since only T. tridentatus migrates to the sea while C. rotundicaudata spends its entire life within or near mangrove habitats. International and national conservation strategies for these species should include further efforts to inventory critical habitats, such as Pearl Bay, in southeast Asia.
format	article
author	CP Chen MC Yang LF Fan G Qiu YY Liao HL Hsieh
author_facet	CP Chen MC Yang LF Fan G Qiu YY Liao HL Hsieh
author_sort	CP Chen
title	Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
title_short	Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
title_full	Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
title_fullStr	Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
title_full_unstemmed	Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China
title_sort	co-occurrence of juvenile horseshoe crabs tachypleus tridentatus and carcinoscorpius rotundicauda in an estuarine bay, southwestern china
publisher	Inter-Research
publishDate	2015
url	https://doaj.org/article/f451100ec2894a409db322c2234bdcb3
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Co-occurrence of juvenile horseshoe crabs Tachypleus tridentatus and Carcinoscorpius rotundicauda in an estuarine bay, southwestern China

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