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14 pages, 3375 KiB

Open AccessArticle

Blockchain Traceability Process for Hairy Crab Based on Cuckoo Filter

by Shiyu Tian and Wenbao Jiang

Appl. Sci. 2024, 14(17), 8027; https://doi.org/10.3390/app14178027 - 8 Sep 2024

Cited by 1 | Viewed by 3451

With the rapid development of global information technology, smart agriculture has gradually become an important force to promote agricultural modernisation. Taking Yangcheng Lake hairy crabs as the research object, this paper constructs a full-chain traceability process for hairy crabs integrating blockchain and Internet of Things technology in response to the demand for the enhancement of its brand value and market competitiveness. The model covers all aspects of breeding, processing, and transport to sales; realises end-to-end transparent regulation; effectively guarantees the authenticity and non-tamperability of information; and enhances consumers’ trust in the brand. At the technical level, this paper designs the ECMI (Enhanced Cuckoo Merkle Index) model, optimises the data storage and retrieval mechanism, and experimentally verifies the advantages of cuckoo filters over traditional Bloom filters in reducing false positives and improving query efficiency. This paper not only provides an efficient and safe traceability solution for the hairy crab industry in Yangcheng Lake but also provides technical support and practical cases for the further application of blockchain technology in smart agriculture, which is of great value for the realisation of the national rural revitalisation strategy. Full article

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15 pages, 7257 KiB

Open AccessEditor’s ChoiceArticle

Identification of “Bathed” Chinese Mitten Crabs (Eriocheir sinensis) Using Geometric Morphological Analysis of the Carapace

by Yiqian Xu, Junren Xue, Hongbo Liu, Tao Jiang, Xiubao Chen and Jian Yang

Fishes 2024, 9(1), 6; https://doi.org/10.3390/fishes9010006 - 21 Dec 2023

Cited by 5 | Viewed by 3574

Abstract

To confirm whether Chinese mitten crabs (Eriocheir sinensis), commonly known as hairy crabs or river crabs, in non-Yangcheng Lake areas undergo morphological convergence with the original crabs in the Yangcheng Lake purse seine and high-standard modified aquaculture ponds after being “introduced” or “bathed”-cultured, we employed a geometric morphometrics approach. This approach allowed us to compare and analyze the dynamic changes in the carapace morphology of both the original and “introduced” crabs in Yangcheng Lake and high-standard ponds in Kunshan City at 0, 7, 14, and 30 days after “bathing” culture. The geometric morphological analysis of the carapace was conducted using a system of 35 established landmarks. The stepwise discriminant analysis of the relative distortion score revealed morphological differences between “introduced” and resident original crabs in the Yangcheng Lake area and in high-standard modified ponds after 7, 14, and 30 days of bathing culture. The accuracy of the discriminant analysis was 100%. The results of the geometric morphological visualization demonstrated that the carapaces of the bathed crabs underwent adaptive changes in the water. However, even after one month of bathing culture, the “introduced” crabs in lakes and ponds could not reach the morphological characteristics of the original crabs, i.e., their carapaces did not exhibit the characteristics of the original crabs. Full article

(This article belongs to the Section Sustainable Aquaculture)

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9 pages, 1080 KiB

Open AccessArticle

Taste Attributes of the “June Hairy Crab” Juveniles of Chinese Mitten Crab (Eriocheir sinensis) in Yangcheng Lake, China—A Pilot Study

by Hongbo Liu, Junren Xue, Jing Tang, Tao Jiang, Xiubao Chen and Jian Yang

Fishes 2022, 7(3), 128; https://doi.org/10.3390/fishes7030128 - 31 May 2022

Cited by 4 | Viewed by 3967

Abstract

This is the first report on the use of a taste sensing system to quantitatively evaluate the taste attributes of two groups of native “June hairy crab” juveniles (commonly referred to as “Liu-Yue-Huang”) of the Chinese mitten crab (Eriocheir Sinensis H. Milne Edwards, 1853) from a net enclosure culture area in Yangcheng Lake (lake culture) and aquaculture ponds near the lake (pond culture). We showed that umami was the predominant basic taste of steamed June hairy crabs, followed by bitterness and astringency. The intensity value of saltiness was aberrant and could not be determined using this system. The average values of aftertaste-U reached 8.7 and 10.7 in the male June hairy crabs from the lake and pond cultures, respectively, which was significantly higher than their respective aftertaste-B and aftertaste-A values (p < 0.01). Female crabs did not have aftertaste-B, while their aftertaste-U was significantly higher than aftertaste-A (p < 0.01). Although principal component analysis and linear discriminant analysis were not able to completely distinguish among crabs from different cultures, they could robustly distinguish between male and female crabs. Full article

(This article belongs to the Section Sustainable Aquaculture)

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