A Secure Medical Record Sharing Scheme Based on Blockchain and Two-fold Encryption

Usually, a medical record (MR) contains the patients disease-oriented sensitive information. In addition, the MR needs to be shared among different bodies, e.g., diagnostic centres, hospitals, physicians, etc. Hence, retaining the privacy and integrity of MR is crucial. A blockchain based secure MR sharing system can manage these aspects properly. This paper proposes a blockchain based electronic (e-) MR sharing scheme that (i) considers the medical image and the text as the input, (ii) enriches the data privacy through a two-fold encryption mechanism consisting of an asymmetric cryptosystem and the dynamic DNA encoding, (iii) assures data integrity by storing the encrypted e-MR in the distinct block designated for each user in the blockchain, and (iv) eventually, enables authorized entities to regain the e-MR through decryption. Preliminary evaluations, analyses, comparisons with state-of-the-art works, etc., imply the efficacy of the proposed scheme.Comment: 6 pages, 3 tables, 8 figures, ICCIT 202

Genetic variation and population structure of spottybelly greenling (Hexagrammos agrammus) in Korean coasts analyzed by DNA markers emphasizing on microsatellites

Two nuclear microsatellite DNA loci along with partial sequences of mitochondrial DNA tRNAPRO-D-loop region were analyzed to assess the genetic diversity and population genetic structure of spottybelly greenling (Hexagrammos agrammus). A total of 85 individuals were investigated from two different locations at the East and the South coasts of Korea which are Imwonjin (IM) and Tongyeong (TN), respectively. In the analysis of genetic diversity, nucleotide diversities were low showing 0.01 whereas haplotype diversities were as high as 0.92 and 0.97 in IM and TN populations, respectively indicating population bottleneck after rapid growth of these populations. No significant genealogical branches or clusters were recognized on the neighbor-joining phylogenetic tree. Pairwise population statistics FST and the exact test of population differentiation from the analysis of microsatellite DNA loci demonstrated no significant genetic difference between two populations investigated in the Korean coasts. In addition, significant deviations from Hardy-Weinberg equilibrium and heterozygote deficiencies were found from the microsatellite DNA loci. The results of the study will help to make a plan for fisheries management of the species

Post-Harvest Processing, Packaging and Inspection of Frozen Shrimp: A Practical Guide

The book is a practical guide for the various steps in the post-harvest technology of frozen shrimps. Shrimps are one of the most common and popular types of seafood consumed globally. The book discusses some of the most sought-after shrimps such as Penaeus monodon, P. vannamei, and Macrobrachium rosenbergii. Good-quality shrimp is a prerequisite for the seafood business as it is used for human consumption. Lack of proper knowledge in raw materials handling and post-harvest processing is the main obstacle in quality shrimp production. Complex business policy, commitment break in both parties (buyers and sellers), competition with other seafood-producing countries, and fluctuation of currency in international seafood market are the factors affecting international seafood business. This book closes this gap in literature and facilitates the production of excellent-quality exportable frozen shrimp through informed practices from experts. The book includes information about packaging of frozen shrimp, inspection, and shipment. It also compiles different mathematical calculations which are in practiced in the processing industries. The book is essential reading for professionals in the shrimp producing and processing industries. It is also useful for researchers in fisheries science, aquaculture, food technology, and food microbiology

Prospects and challenges of environmental DNA (eDNA) metabarcoding in mangrove restoration in Southeast Asia

Species detection using environmental DNA (eDNA) is a biomonitoring tool that can be widely applied to mangrove restoration and management. Compared to traditional surveys that are taxa-specific and time-consuming, eDNA metabarcoding offers a rapid, non-invasive and cost-efficient method for monitoring mangrove biodiversity and characterising the spatio-temporal distribution of multiple taxa simultaneously. General guidelines for eDNA metabarcoding are well-established for aquatic systems, but habitat-specific guidelines are still lacking. Mangrove habitats, as priority ecosystems for restoration in Southeast Asia, present unique prospects and challenges in these regards. Environmental DNA metabarcoding can be used to (1) track functional recovery in ecological restoration, (2) prioritise conservation areas, (3) provide early warning for threats, (4) monitor threatened taxa, (5) monitor response to climate change, and (6) support community-based restoration. However, these potential applications have yet been realized in Southeast Asia due to (1) technical challenges, (2) lack of standardised methods, (3) spatio-temporal difficulties in defining community, (4) data limitations, and (5) lack of funding, infrastructure and technical capacity. Successful implementation of eDNA metabarcoding in mangrove restoration activities would encourage the development of data-driven coastal management and equitable conservation programs. Eventually, this would promote Southeast Asia’s shared regional interests in food security, coastal defence and biodiversity conservation

Description of a new species of giant guitarfish, Glaucostegus younholeei sp nov. (Rhinopristiformes: Glaucostegidae) from the northern Bay of Bengal Bangladesh

Habib, Kazi Ahsan, Islam, Md Jayedul (2021): Description of a new species of giant guitarfish, Glaucostegus younholeei sp nov. (Rhinopristiformes: Glaucostegidae) from the northern Bay of Bengal Bangladesh. Zootaxa 4995 (1): 129-146, DOI: https://doi.org/10.11646/zootaxa.4995.1.

Genetic variation and population structure of spottybelly greenling (Hexagrammos agrammus) in Korean coasts analyzed by DNA markers emphasizing on microsatellites

Two nuclear microsatellite DNA loci along with partial sequences of mitochondrial DNA tRNAPRO-D-loop region were analyzed to assess the genetic diversity and population genetic structure of spottybelly greenling (Hexagrammos agrammus). A total of 85 individuals were investigated from two different locations at the East and the South coasts of Korea which are Imwonjin (IM) and Tongyeong (TN), respectively. In the analysis of genetic diversity, nucleotide diversities were low showing 0.01 whereas haplotype diversities were as high as 0.92 and 0.97 in IM and TN populations, respectively indicating population bottleneck after rapid growth of these populations. No significant genealogical branches or clusters were recognized on the neighbor-joining phylogenetic tree. Pairwise population statistics FST and the exact test of population differentiation from the analysis of microsatellite DNA loci demonstrated no significant genetic difference between two populations investigated in the Korean coasts. In addition, significant deviations from Hardy-Weinberg equilibrium and heterozygote deficiencies were found from the microsatellite DNA loci. The results of the study will help to make a plan for fisheries management of the species

Pomacentrus bangladeshius, a new species of damselfish (Perciformes, Pomacentridae) from Saint Martin's Island, Bangladesh

Habib, Kazi Ahsan, Islam, Md Jayedul, Nahar, Najmun, Neogi, Amit Kumer (2020): Pomacentrus bangladeshius, a new species of damselfish (Perciformes, Pomacentridae) from Saint Martin's Island, Bangladesh. Zootaxa 4860 (3): 413-424, DOI: https://doi.org/10.11646/zootaxa.4860.3.

Two new records of bivalve (Mollusca) from Sonadia Island, Bangladesh

The Sonadia Island, located at the south-east coast of Bangladesh, comprises a wide variety of wetland habitats including mudflats, sand dunes and mangroves which made this island a favoured habitat for diversified molluscan fauna. This paper deals with the new distributional record of two species of marine Bivalvia in Bangladesh- Tellinides timorensis Lamarck, 1818 and Vepricardium coronatum (Schröter, 1786) belonging to the family Tellinidae and Cardiidae respectively. Analysis of taxonomy, diagnosis of shell, geographic distribution and habitat, illustrations of each species and identification characteristics were presented in this paper

Population structure, phylogeography and demographic history of Tenualosa ilisha populations in the Indian Ocean region inferred from mitochondrial DNA sequence variation

International audienceUnderstanding evolutionary processes reshaping the genetic structure in the context of environmental changes is an important component of sustainable management for the fisheries resources. In this study, we analyzed mitochondrial control region sequence to reveal population structure, phylogeog-raphy and demographic history of six populations of hilsa shad (Tenualosa ilisha) in the Indian Ocean regions (Andaman Sea, Bay of Bengal, Arabian Sea and Persian Gulf). High haplotype diversity was found in all of the populations of T. ilisha. The Analysis of Molecular Variance and FST comparisons revealed high level of genetic variation and divergence between populations of the Bay of Bengal and Arabian Sea. Four cryptic genetic barriers were found for the studied populations of T. ilisha, and the highest degree of population divergence was found between the Western Indian Ocean (Arabian Sea and Persian Gulf) and Eastern Indian Ocean (Andaman Sea and Bay of Bengal) regions based on the Voronoi tessellation of BARRIER analysis. The gene flow analysis detected almost no migration between Eastern and Western part of the Indian Ocean regions. Besides, one-way migration was found from Pakistan of Arabian Sea to Kuwait population of Persian Gulf. Demographic history of population expansion and long stable population varied for different populations of hilsa shad. Distinct cryptic genetic barriers, limited gene flows and complex evolutionary process resulted in a significant population genetic and phylogeographic structure, and intricate demographic histories of T. ilisha populations. Further, the study provided valuable insights for conserving and managing of this fishery resource in its broad geographical coverage

Grunts (Actinopterygii: Perciformes: Haemulidae) of Bangladesh with two new distributional records from the northern Bay of Bengal assessed by morphometric characters and DNA barcoding

Grunts (family Haemulidae) are among the most commercially important fish in Bangladesh. This paper provides brief diagnostic characters of five previously reported grunt species: Plectorhinchus pictus (Thunberg, 1792); Pomadasys andamanensis McKay et Satapoomin, 1994; Pomadasys argenteus (Forsskål, 1775); Pomadasys argyreus (Valenciennes, 1833); Pomadasys maculatus (Bloch, 1793) and two new distributional records: Pomadasys guoraca (Cuvier, 1829) and Plectorhinchus macrospilus Satapoomin et Randall, 2000. The fishes were collected from the Saint Martin’s Island coral reef-like ecosystem and the adjacent sea of the Sundarbans mangrove forest of Bangladesh. The examined specimens were identified and diagnosed based on their morphometric characters and DNA barcoding COI gene. The new records of Pomadasys guoraca and Plectorhinchus macrospilus from Bangladesh greatly extend their distributional range in the Bay of Bengal. An updated checklist of grunts of Bangladesh is provided