Interaction among sea urchins in response to food cues

Abstract Interaction among sea urchins remains largely uninvestigated, although the aggregation of sea urchins is common. In the present study, 1, 15 and 30 sea urchins Strongylocentrotus intermedius (11.06 ± 0.99 mm in test diameter) were placed in a 1 m2 circular tank, respectively. Movement behav...

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Autores principales:	Jiangnan Sun, Zihe Zhao, Chong Zhao, Yushi Yu, Peng Ding, Jingyun Ding, Mingfang Yang, Xiaomei Chi, Fangyuan Hu, Yaqing Chang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d940fc9ff0f34d67ad442cd2c936a944
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spelling	oai:doaj.org-article:d940fc9ff0f34d67ad442cd2c936a9442021-12-02T15:36:31ZInteraction among sea urchins in response to food cues10.1038/s41598-021-89471-22045-2322https://doaj.org/article/d940fc9ff0f34d67ad442cd2c936a9442021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89471-2https://doaj.org/toc/2045-2322Abstract Interaction among sea urchins remains largely uninvestigated, although the aggregation of sea urchins is common. In the present study, 1, 15 and 30 sea urchins Strongylocentrotus intermedius (11.06 ± 0.99 mm in test diameter) were placed in a 1 m2 circular tank, respectively. Movement behaviors were recorded for 12 min to investigate potential interactions among sea urchins. After the 12-min control period, we added food cues into the tank and recorded the changes in sea urchins’ behaviors. For the first time, we here quantified the interactions among sea urchins in laboratory and found that the interactions varied with food cues and with different densities. The sea urchins dispersed in random directions after being released. There was no significant difference in the movement speed and the displacement of sea urchins among the three density groups (1, 15 and 30 ind/m2). The interaction occurred when sea urchins randomly contacted with the conspecifics and slowed down the movement speed. The speed of sea urchins after physical contacts decreased by an average of 40% in the density of 15 ind/m2 and 17% in the density of 30 ind/m2. This interaction resulted in significantly higher randomness in the movement direction and lower movement linearity in 15 and 30 ind/m2 than in 1 ind/m2. After the introduction of food cues, the movement speed, displacement and dispersal distance of sea urchin groups decreased significantly in all the three densities. The dispersal distance and expansion speed of sea urchins were significantly lower in 30 ind/m2 than those in 15 ind/m2. The present study indicates that the interaction among sea urchins limits the movement of individual sea urchin and provides valuable information into how large groups of sea urchins are stable in places where food is plentiful.Jiangnan SunZihe ZhaoChong ZhaoYushi YuPeng DingJingyun DingMingfang YangXiaomei ChiFangyuan HuYaqing ChangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiangnan Sun Zihe Zhao Chong Zhao Yushi Yu Peng Ding Jingyun Ding Mingfang Yang Xiaomei Chi Fangyuan Hu Yaqing Chang Interaction among sea urchins in response to food cues
description	Abstract Interaction among sea urchins remains largely uninvestigated, although the aggregation of sea urchins is common. In the present study, 1, 15 and 30 sea urchins Strongylocentrotus intermedius (11.06 ± 0.99 mm in test diameter) were placed in a 1 m2 circular tank, respectively. Movement behaviors were recorded for 12 min to investigate potential interactions among sea urchins. After the 12-min control period, we added food cues into the tank and recorded the changes in sea urchins’ behaviors. For the first time, we here quantified the interactions among sea urchins in laboratory and found that the interactions varied with food cues and with different densities. The sea urchins dispersed in random directions after being released. There was no significant difference in the movement speed and the displacement of sea urchins among the three density groups (1, 15 and 30 ind/m2). The interaction occurred when sea urchins randomly contacted with the conspecifics and slowed down the movement speed. The speed of sea urchins after physical contacts decreased by an average of 40% in the density of 15 ind/m2 and 17% in the density of 30 ind/m2. This interaction resulted in significantly higher randomness in the movement direction and lower movement linearity in 15 and 30 ind/m2 than in 1 ind/m2. After the introduction of food cues, the movement speed, displacement and dispersal distance of sea urchin groups decreased significantly in all the three densities. The dispersal distance and expansion speed of sea urchins were significantly lower in 30 ind/m2 than those in 15 ind/m2. The present study indicates that the interaction among sea urchins limits the movement of individual sea urchin and provides valuable information into how large groups of sea urchins are stable in places where food is plentiful.
format	article
author	Jiangnan Sun Zihe Zhao Chong Zhao Yushi Yu Peng Ding Jingyun Ding Mingfang Yang Xiaomei Chi Fangyuan Hu Yaqing Chang
author_facet	Jiangnan Sun Zihe Zhao Chong Zhao Yushi Yu Peng Ding Jingyun Ding Mingfang Yang Xiaomei Chi Fangyuan Hu Yaqing Chang
author_sort	Jiangnan Sun
title	Interaction among sea urchins in response to food cues
title_short	Interaction among sea urchins in response to food cues
title_full	Interaction among sea urchins in response to food cues
title_fullStr	Interaction among sea urchins in response to food cues
title_full_unstemmed	Interaction among sea urchins in response to food cues
title_sort	interaction among sea urchins in response to food cues
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d940fc9ff0f34d67ad442cd2c936a944
work_keys_str_mv	AT jiangnansun interactionamongseaurchinsinresponsetofoodcues AT zihezhao interactionamongseaurchinsinresponsetofoodcues AT chongzhao interactionamongseaurchinsinresponsetofoodcues AT yushiyu interactionamongseaurchinsinresponsetofoodcues AT pengding interactionamongseaurchinsinresponsetofoodcues AT jingyunding interactionamongseaurchinsinresponsetofoodcues AT mingfangyang interactionamongseaurchinsinresponsetofoodcues AT xiaomeichi interactionamongseaurchinsinresponsetofoodcues AT fangyuanhu interactionamongseaurchinsinresponsetofoodcues AT yaqingchang interactionamongseaurchinsinresponsetofoodcues
_version_	1718386319585968128

Interaction among sea urchins in response to food cues

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