Effects of different diet culture the developmental process of the <i>Robertgurneya</i> sp.

Effects of different diet culture the developmental process of the Robertgurneya sp.

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Liang Gu¹^,²^,³, Simin Hu¹^,²^,⁴^,⁵, Lin Ma⁶, Chen Zhang¹^,²^,³, Beiye Zhang¹^,²^,³, Hui Huang¹^,²^,⁴^,⁵^,⁷^,⁸, Sheng Liu¹^,²^,⁴^,⁵^,^*

Haiyang Xuebao | 2024, 46(9) : 64 - 72

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Haiyang Xuebao | 2024, 46(9): 64-72

• Article •

Effects of different diet culture the developmental process of the Robertgurneya sp.

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Liang Gu¹^,²^,³, Simin Hu¹^,²^,⁴^,⁵, Lin Ma⁶, Chen Zhang¹^,²^,³, Beiye Zhang¹^,²^,³, Hui Huang¹^,²^,⁴^,⁵^,⁷^,⁸, Sheng Liu¹^,²^,⁴^,⁵^,^*

Affiliations

1. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

2. Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

3. University of Chinese Academy of Sciences, Beijing 100049, China

4. Key Laboratory of Tropical Marine Biotechnology of Hainan Province, Sanya Institute of Ocean Eco-Environmental Engineering, Sanya 572000, China

5. CAS-HKUST Sanya Joint Laboratory of Marine Science Research, Sanya Institute of Ocean Eco-Environmental Engineering, Sanya 572000, China

6. Department of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China

7. Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China

8. Sanya National Marine Ecosystem Research Station, Sanya 572000, China

Published: 2024-09-01 doi: 10.12284/hyxb2024092

Outline

Abstract

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Benthic harpacticoid copepods are widely distributed in marine ecosystem, which is particularly abundant in the epilithic algal matrix(EAM) of coral reefs. Due to its unique habitat, there is currently limited research on its developmental process and cultivation methods. In this study, we collected epilithic algal matrix from the coral reef of Luhuitou, Sanya, Hainan in the summer of 2023, from which we isolated one species of Harpacticoida, which was belonging to the genus Robertgurneya based on morphological characteristics. The effects of mono-and mixed-algal cultures on the developmental dynamics of Robertgurneya sp. were observed and recorded. The results showed that the adult body length of the Robertgurneya sp. was 0.5−0.7 mm, with an average life cycle of about 61−68 days. There were no significant differences in egg number per female each time, brood number, reproductive cycle, and life cycle between different feed cultivation techniques. However, under mixed algae culture, the average egg diameter, larval survival rate, and maximum body length of nauplii stage VI in the embryonic development stage of the Robertgurneya sp. were significantly higher than those in the mono-algae culture group (p < 0.05). Moreover, the embryonic development time and cumulative copepodid development time were significantly shorter under mixed-algal culture (p < 0.05). The results indicate that Robertgurneya sp. in EAM have a short life cycle and strong reproductive ability. Considering the abundant benthic microalgae and organic debris in the mats, harpacticoida may be able to provide huge potential food resources for predators such as small fish in coral reefs. Therefore, it may play an important role in the material cycle and energy flow of coral reef ecosystems.

Key words

harpacticoida copepods / coral reefs / epilithic algal matrix / diet / cultivation methods / developmental process

Cite this Article

Liang Gu, Simin Hu, Lin Ma, Chen Zhang, Beiye Zhang, Hui Huang, Sheng Liu. Effects of different diet culture the developmental process of the Robertgurneya sp.[J]. Haiyang Xuebao, 2024 , 46 (9) : 64 -72 . DOI: 10.12284/hyxb2024092

Funding

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National Natural Science Foundation of China(42176118)
National Key Research a nd Development Project of C hina(2022FY100602)

Appendix

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Year 2024 volume 46 Issue 9

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187

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Article Info

doi: 10.12284/hyxb2024092

Receive Date：2024-03-13
Online Date：2025-11-26
Published：2024-09-01

Article Data

Affiliations

History

Received：2024-03-13
Revised：2024-05-06

Funding

National Natural Science Foundation of China(42176118)

National Key Research a nd Development Project of C hina(2022FY100602)

Affiliations