Conspecific alarm cues are a potential effective barrier to regulate foraging behavior of the sea urchin Mesocentrotus nudus

2021 ◽  
Vol 171 ◽  
pp. 105476
Author(s):  
Xiaomei Chi ◽  
Fangyuan Hu ◽  
Chuanxin Qin ◽  
Xiyuan Huang ◽  
Jiangnan Sun ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Sea Urchin ◽  
Alarm Cues ◽  
Effective Barrier ◽  
Mesocentrotus Nudus

scholarly journals Foraging behavior of the sea urchin Mesocentrotus nudus exposed to conspecific alarm cues in various conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaomei Chi ◽  
Mingfang Yang ◽  
Fangyuan Hu ◽  
Xiyuan Huang ◽  
Yushi Yu ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Sea Urchins ◽  
Pearson Correlation ◽  
Cost Effective ◽  
Alarm Cues ◽  
Short Term ◽  
Significant Difference ◽  
Foraging Ability ◽  
Pearson Correlation Analysis ◽  
Mesocentrotus Nudus

AbstractConspecific alarm cues crushed from Mesocentrotus nudus prevent sea urchins from foraging the kelp, but do not repel them far away from the kelp. However, it remains largely unknown of whether this phenomenon was affected by conspecific alarm cues or by the attraction of the kelp. The present study found no significant difference in the duration in the danger area with or without the kelp around conspecific alarm cues. This suggests that the phenomenon is the strategy of sea urchins but not by the attraction of kelp. We found that conspecific alarm cues appearing between the kelp and sea urchins significantly affected foraging behavior of sea urchins fasted for 21 days. This indicates that conspecific alarm cues can effectively prevent fasted sea urchins from foraging the kelp. Further, there was no correlation between foraging velocity and the duration in the danger area. Pearson correlation analysis revealed no significant correlation between foraging velocity and the duration in the safety area close to different amounts of conspecific alarm cues, suggesting that conspecific alarm cues prevent sea urchins with strong foraging ability to forage. Collectively, the present results indicate that conspecific alarm cues as highly available biological barriers are cost-effective approaches to preventing overgrazing of sea urchins in the protection of kelp beds ecosystems. Notably, the present study is a short-term laboratory investigation that does not consider the complexity of natural conditions. Future studies are essential to test the present findings in the field.

Effects of Anti-Fouling System (AFS) on embryos of a sea urchin, Mesocentrotus nudus

2019 ◽  
Vol 37 (3) ◽  
pp. 389-395
Author(s):  
Jin-Young Seo ◽  
Jung Hoon Kang ◽  
Jin-Woo Choi
Keyword(s):  
Sea Urchin ◽  
Mesocentrotus Nudus

Influence of the 2011 Tohoku tsunami on the genetic structure of wild sea urchin ( Mesocentrotus nudus ) populations in Sanriku, Japan

2020 ◽  
Vol 41 (2) ◽  
Author(s):  
Kenta Adachi ◽  
Takuya Suzuki ◽  
Sei‐ichi Okumura ◽  
Shohei Funayama ◽  
Shunsuke Moriyama
Keyword(s):  
Genetic Structure ◽  
Sea Urchin ◽  
2011 Tohoku Tsunami ◽  
Mesocentrotus Nudus ◽  
Tohoku Tsunami

Consumption of the edible sea urchin Mesocentrotus nudus attenuates body weight gain and hepatic lipid accumulation in mice

2018 ◽  
Vol 47 ◽  
pp. 40-47 ◽  
Author(s):  
Ryoko Yamamoto ◽  
Hisanori Minami ◽  
Hiromi Matsusaki ◽  
Mami Sakashita ◽  
Naoki Morita ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Sea Urchin ◽  
Lipid Accumulation ◽  
Body Weight Gain ◽  
Hepatic Lipid ◽  
Hepatic Lipid Accumulation ◽  
Mesocentrotus Nudus

scholarly journals Identification of Sex-Specific Markers Through 2b-RAD Sequencing in the Sea Urchin (Mesocentrotus nudus)

2021 ◽  
Vol 12 ◽  
Author(s):  
Zhouping Cui ◽  
Jian Zhang ◽  
Zhihui Sun ◽  
Bingzheng Liu ◽  
Chong Zhao ◽  
...  
Keyword(s):  
Sex Determination ◽  
Sea Urchin ◽  
Sex Differentiation ◽  
Pcr Amplification ◽  
Open Reading Frames ◽  
Genome Survey ◽  
A Genome ◽  
Mesocentrotus Nudus ◽  
Female Specific ◽  
Determination Mechanism

Sex-specific markers play an important role in revealing sex-determination mechanism. Sea urchin (Mesocentrotus nudus) is an economically important mariculture species in several Asian countries and its gonads are the sole edible parts for people. However, growth rate and immunocompetence differ by sex in this species, sex-specific markers have not been identified, and the sex-determination mechanism of sea urchin remains undetermined. In this study, type IIB endonuclease restriction-site associated DNA sequencing (2b-RAD-seq) and a genome survey of M. nudus were performed, and three female-specific markers and three female heterogametic single nucleotide polymorphism (SNP) loci were identified. We validated these sex-specific markers via PCR amplification in a large number of individuals, including wild and artificially bred populations. Several open reading frames (ORFs) were predicted, although there are no potential genes known for sex determination and sex differentiation within the scaffold in which the sex-specific markers are located. Importantly, the female-specific sequences and female heterozygous SNP loci indicate that a female heterogametic and male homogametic ZW/ZZ sex-determination system should exist in M. nudus. The results provide a solid basis for revealing the sex-determination mechanism of this species, and open up new possibilities for developing sex-control breeding in sea urchin.

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