Possible predation on commercial bivalves by Tachypleus gigas: an assessment of horseshoe crab reintroduction in Setiu Lagoon of Terengganu, Malaysia

Halim, Anis Syahira Abdul; Mohamad, Faridah; Farid, Ahmad; Ismail, Normaz Wana; Chilek, Tuan Zainazor Tuan; Ahmad, Ahmad Shamsuddin; Cob, Zaidi Che; Yusof, Ku Mohd Kalkausar Ku

doi:10.1007/s10750-020-04493-7

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…Based on the finding that major food sources for adult T. tridentatus and T. gigas are bivalves and fish (Guo et al, 2021;Halim et al, 2021), oysters and frozen fish were selected as diets for adult T. tridentatus in this study. Oysters have more moisture, crude protein, crude fat, and ash content than frozen fish (Li et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Impact of Different Diets on Adult Tri-Spine Horseshoe Crab, Tachypleus tridentatus

Ying

Bao

et al. 2022

J. Ocean Univ. China

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Effective culture and management of adult tri-spine horseshoe crab, Tachypleus tridentatus can ensure that stock enhancement programs and aquaculture systems are maintained. To explore suitable feed for animals during the breeding season, Pacific oyster (Ostrea gigas) (oyster group; OG) and frozen sharpbelly fish (Hemiculter leucisculus) (frozen fish group; FG) were selected to feed 20 T. tridentatus male and female pairs, respectively. At the end of the experiment, intestinal samples were obtained to measure digestive enzymes activities. The intestinal flora were determined by 16S rDNA sequencing. No eggs were observed in the FG and one T. tridentatus adult died. No animals died in the OG, and 9.7 × 10 4 eggs were obtained. These results show that oysters are more suitable for the development and reproduction of adult T. tridentatus than frozen fish. Additionally, the digestive enzyme activity analysis revealed that animals in the OG exhibited higher protein digestibility than those in the FG, but no significant differences in lipid and carbohydrate uptake were observed between the groups. Furthermore, the intestinal flora analysis showed that operational taxonomic units (OTUs) and the Chao1 index were significantly higher in the OG than in the FG, but no significant difference was observed in the Shannon or Simpson indices between the groups. Our data indicate that the oyster diet improved the intestinal microbial diversity of T. tridentatus. We hypothesize that nutrients, such as oyster-based taurine, proteins, and highly unsaturated fatty acids, improve protease activity in the T. tridentatus digestive tract, alter the intestinal floral structure, and improve the reproductive performance of T. tridentatus.

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Section: Introductionmentioning

confidence: 99%

Impact of Different Diets on Adult Tri-Spine Horseshoe Crab, Tachypleus tridentatus

Ying

Bao

et al. 2022

J. Ocean Univ. China

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Local people perception on Carcinoscorpius rotundicauda and Tachypleus spp. in Banyuasin, Sumatera, Indonesia

Fauziyah

Mustopa

Fatimah

et al. 2023

Ocean & Coastal Management

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Sediment preference of coastal horseshoe crab (Tachypleus gigas) in an artificial spawning ground

Abdul Halim,

Ikhwanuddin,

Ismail

et al. 2024

Mar. Freshw. Res.

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Context Spawning beaches are important for coastal horseshoe crabs, Tachypleus gigas (Müller, 1785), to sustain their population. Over time, T. gigas natural spawning area has gradually diminished owing to human and natural causes. T. gigas is being artificially bred in captivity to enhance its population. Aims The study aims to determine the T. gigas spawning preference for three different sediment sizes. Methods Spawning experiments were carried out in an indoor concrete tank representing an artificial spawning ground, consisting of three combinations of sediment sizes: coarse, medium and fine. The spawning of 45 pairs of T. gigas samples was observed within 3 h, the nests were marked and excavated on the next day. The number of eggs per nest was counted individually after being cleaned. Key results The 45 pairs of T. gigas produced 27,266–30,859 eggs. Among these, on the basis of the number of nests produced, T. gigas prefers to spawn in medium to coarse sediment with a particle-size range of 0.25–1.00 mm. Conclusions Our findings indicated that medium to coarse sediments are optimal for T. gigas spawning in artificial spawning grounds, because they could produce a high number of nests and eggs, increasing the number of juveniles released. Implications These results could be used as a baseline for the conservation management of T. gigas in captivity.

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Possible predation on commercial bivalves by Tachypleus gigas: an assessment of horseshoe crab reintroduction in Setiu Lagoon of Terengganu, Malaysia

Cited by 4 publications

References 26 publications

Impact of Different Diets on Adult Tri-Spine Horseshoe Crab, Tachypleus tridentatus

Impact of Different Diets on Adult Tri-Spine Horseshoe Crab, Tachypleus tridentatus

Local people perception on Carcinoscorpius rotundicauda and Tachypleus spp. in Banyuasin, Sumatera, Indonesia

Sediment preference of coastal horseshoe crab (Tachypleus gigas) in an artificial spawning ground

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