Thalassas: An International Journal of Marine Sciences最新文献_第3页

Biodegradation of Seaweed-based Bioplastics Using Deep-sea Marine Bacterial Consortia 利用深海海洋细菌群生物降解海藻基生物塑料

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-06-18 DOI: 10.1007/s41208-024-00736-9

M. P. Sudhakar, M. Hinduja, K. Sujitha, A. Ganesh Kumar, G. Dharani

{"title":"Biodegradation of Seaweed-based Bioplastics Using Deep-sea Marine Bacterial Consortia","authors":"M. P. Sudhakar, M. Hinduja, K. Sujitha, A. Ganesh Kumar, G. Dharani","doi":"10.1007/s41208-024-00736-9","DOIUrl":"https://doi.org/10.1007/s41208-024-00736-9","url":null,"abstract":"Thin plastic films used for packing food materials are unsafe for consumers and are not readily degradable. Single-use plastic films accumulate in the environment and cause adverse effects in the food chain. In this study, Kappaphycus alvarezii, which has the value-added polymer carrageenan, was used for developing a bioplastic film along with the plasticizer polyethylene glycol (PEG 3000). Different concentrations of seaweed were used (3%, 4% and 5% dry weight), of which 4% had a higher tensile strength than the other concentrations. The physical and mechanical properties of the developed plastic films, such as thickness, tensile strength (TS), water vapor transmission rate (WVTR), oxygen transmission rate (OTR) and color, were tested for packaging applications in the food industry. A higher concentration of seaweed increased the WVTR, and a lower concentration increased the OTR. In addition, the biodegradation of the developed bioplastic was tested using isolated deep-sea microbial consortia to meet environmental standards. A deep-sea marine microbial consortium (Bacillus paralicheniformis G1, Bacillus subtilis G2, Bacillus subtilis Z1, and Enterobacter cloacae subsp. dissolvens Z2) degrades seaweed (Kappaphycus alvarezii)-derived bioplastic under buried soil conditions. The maximum degradation (88%) in the 5% (w/v) bioplastic film was observed within 10 days of incubation.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":22298,"journal":{"name":"Thalassas: An International Journal of Marine Sciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Health Risk Assessment and Mineral Contents in Brown Seaweed Colpomenia sinuosa for Human Consumption 供人类食用的褐藻中的健康风险评估和矿物质含量

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-06-01 DOI: 10.1007/s41208-024-00724-z

Gülen Türker, İlknur Ak, Elif Çağrı Taş

{"title":"Health Risk Assessment and Mineral Contents in Brown Seaweed Colpomenia sinuosa for Human Consumption","authors":"Gülen Türker, İlknur Ak, Elif Çağrı Taş","doi":"10.1007/s41208-024-00724-z","DOIUrl":"https://doi.org/10.1007/s41208-024-00724-z","url":null,"abstract":"This study focuses on the mineral content and health risk assessment of the brown seaweed Colpomenia sinuosa. The mineral composition of the seaweed samples (Na, K, Mg, Fe, Cu, Zn, Mn, P, Ni, Pb, Cd, Cr, Al) was investigated from three different Turkish coastal locations: İzmir Bay (S1), the Strait of Çanakkale (S2), and the Sea of Marmara (S3). The mineral contents of samples were analyzed using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) as part of our methodology. It was found that the mineral content varied significantly depending on the location from which the samples were taken. The highest levels of Na, Ca, Mg, Fe, Ni, and Mn were observed in the samples from İzmir Bay, whereas those from the Sea of Marmara showed elevated levels of P and Zn. The study also revealed the presence of heavy metals, including Pb, Co, Cd, Cr, and Al, in the seaweed. According to hazard index (HI) calculations, adult consumption of this seaweed poses a low health risk, with a hazard index below 1. Various heavy metals have been detected in the seaweed, but their concentrations are not high enough to pose significant health risks, and therefore, the seaweed is safe for human consumption within reasonable limits. Our results suggest that C. sinuosa could be a valuable source of essential minerals for human consumption.","PeriodicalId":22298,"journal":{"name":"Thalassas: An International Journal of Marine Sciences","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141195099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First record of the rare deep-sea shark, Scymnodon ichiharai Yano and Tanaka, 1984 (Squaliformes: Somniosidae) from Andaman Waters, India 印度安达曼水域罕见深海鲨鱼 Scymnodon ichiharai Yano and Tanaka, 1984 (Squaliformes: Somniosidae) 的首次记录

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-30 DOI: 10.1007/s41208-024-00723-0

Ravi Ranjan Kumar, S. Venu, K. K. Bineesh, K. A. Sajeela, D. A. Ebert, A. Gopalakrishnan, V. S. Basheer

引用次数: 0

Stock Assessment of Exploited Populations of Shovel-Nosed Lobster Thenus unimaculatus (Scyllaridae, Burton and Davie, 2007) Along the Indian Coast Using Length-Based Approaches 使用基于长度的方法评估印度沿岸锹鼻龙虾 Thenus unimaculatus（Scyllaridae，Burton 和 Davie，2007 年）的已开发种群数量

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-30 DOI: 10.1007/s41208-024-00727-w

Rekha Devi Chakraborty, Rajan Kumar, Gyanaranjan Dash, Gidda Maheswarudu

{"title":"Stock Assessment of Exploited Populations of Shovel-Nosed Lobster Thenus unimaculatus (Scyllaridae, Burton and Davie, 2007) Along the Indian Coast Using Length-Based Approaches","authors":"Rekha Devi Chakraborty, Rajan Kumar, Gyanaranjan Dash, Gidda Maheswarudu","doi":"10.1007/s41208-024-00727-w","DOIUrl":"https://doi.org/10.1007/s41208-024-00727-w","url":null,"abstract":"This manuscript presents a detailed investigation into the stock status of Thenus unimaculatus, a commercially valuable lobster species in India. In data-poor fisheries, Bayesian approach offers robust guidance for sustainable sand lobster population management. Utilizing a non-conventional Bayesian approach, the study employed length-based Bayesian biomass (LBB) and length-based Spawning Potential Ratio (LB-SPR) methods to analyze length frequency data collected between 2011 and 2019. In our study using LBB, the current exploited biomass (B/B0 = 0.35) was found to be lower than the biomass capable of producing maximum sustainable yield (B/BMSY=0.93). Spawning potential ratio was calculated between 28 and 37% using LB-SPR model. The fishing mortality (F/M = 1.5) was slightly above optimal, resulting in low sand lobster biomass due to moderate over-exploitation. This suggests a need for rational slipper lobster catch control. However, with an Lm50/Lc50 ratio close to 1.0, indicates an absence of targeted juvenile fishery, it suggest the need to reduce fishing pressure. . However, implementing measures is challenging because the species forms a by-catch in trawl fisheries. ","PeriodicalId":22298,"journal":{"name":"Thalassas: An International Journal of Marine Sciences","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141195114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cadmium Effects on Superoxide Dismutase Activity in Litopenaeus vannamei Hemolymph 镉对凡纳滨对虾血淋巴中超氧化物歧化酶活性的影响

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-29 DOI: 10.1007/s41208-024-00726-x

Juan Carlos Bautista-Covarrubias, Germán Velarde-Montes, Martín Soto-Jiménez, Marisela Aguilar-Juárez, Cristina Osuna-Martínez, Isidro Osuna-López, José Armando López-Sánchez, Martín Gabriel Frías-Espericueta

{"title":"Cadmium Effects on Superoxide Dismutase Activity in Litopenaeus vannamei Hemolymph","authors":"Juan Carlos Bautista-Covarrubias, Germán Velarde-Montes, Martín Soto-Jiménez, Marisela Aguilar-Juárez, Cristina Osuna-Martínez, Isidro Osuna-López, José Armando López-Sánchez, Martín Gabriel Frías-Espericueta","doi":"10.1007/s41208-024-00726-x","DOIUrl":"https://doi.org/10.1007/s41208-024-00726-x","url":null,"abstract":"Under controlled laboratory conditions the Cd effects on hemolymph superoxide dismutase (SOD) activity were evaluated at 8.8, 24.9 and 249 µg Cd/L and exposure times of 5, 48, and 96 h. Shrimp hemolymph samples were extracted from the first abdominal segment and hemocytes separated by centrifugation, and SOD activity (units/mg of protein in shrimp hemolymph) was quantified using the RANSOD assay kit. No mortality was observed in the controls and treatments. Superoxide dismutase activity ranged from 0.938 ± 0.0938 to 0.946 ± 0.042 SOD units/mg of protein in shrimp hemolymph in controls. At 5-h exposure, SOD activity decreased at all Cd concentrations, with significant differences (p < 0.05) than those of controls. However, a significant (p < 0.05) SOD activity increase was observed at 48-h exposure in those shrimp exposed to 24.9 and 249 µg Cd/L; but a significant (p < 0.05) SOD decrease was determined in those specimens exposed to highest Cd levels at 96-h exposure. More experiments such as those in this study are required for future updates of protection criteria for Cd in estuarine and marine environments.","PeriodicalId":22298,"journal":{"name":"Thalassas: An International Journal of Marine Sciences","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pomacanthidae Species in the Mediterranean and a New Location Record of the Emperor Angelfish Pomacanthus imperator (Bloch, 1787) from these Species 地中海中的帝王 Angelfish Pomacanthus imperator (Bloch, 1787) 物种以及这些物种的新位置记录

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-27 DOI: 10.1007/s41208-024-00728-9

Alper Yıldız, Mehmet Gökoğlu

引用次数: 0

First Record of Partial Albinism in the Chinese Fanray, Platyrhina Sinensis (Elasmobranchii: Myliobatiformes: Platyrhinidae) 中国扇鳐首次发现部分白化现象（鳞鳃目：贻贝形目：鲽科）

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-18 DOI: 10.1007/s41208-024-00713-2

Yan Zhuang, Shuting Ke, Mingru Chen, Jiamei Xiao

引用次数: 0

Body and Otolith Morphometrics of Sea Toad Chaunax Abei (Le Danois, 1978) in Suruga Bay, Japan 日本骏河湾海蟾 Chaunax Abei（Le Danois，1978 年）的身体和耳石形态计量学

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-16 DOI: 10.1007/s41208-024-00715-0

A. M. Şenbahar, Akira Eto, Masashi Yokota

引用次数: 0

Seasonal Variability On Cross-shore Profile in Meso-tidal Settings Due to Lunar Cycle Effects in Kuala Terengganu Coast 瓜拉丁加奴海岸月相周期效应导致的中潮位跨岸剖面的季节性变化

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-13 DOI: 10.1007/s41208-024-00705-2

Muhammad Fadhli Harris, Muhammad Izuan Nadzri, Ku Mohd Kalkausar Ku Yusof, Wan Amrul Jaahiz Abd Razak, Mohamad Hakim Mohd Shukri, Nor Bakhiah Baharim, Azizi Ali, Effi Helmy Ariffin

{"title":"Seasonal Variability On Cross-shore Profile in Meso-tidal Settings Due to Lunar Cycle Effects in Kuala Terengganu Coast","authors":"Muhammad Fadhli Harris, Muhammad Izuan Nadzri, Ku Mohd Kalkausar Ku Yusof, Wan Amrul Jaahiz Abd Razak, Mohamad Hakim Mohd Shukri, Nor Bakhiah Baharim, Azizi Ali, Effi Helmy Ariffin","doi":"10.1007/s41208-024-00705-2","DOIUrl":"https://doi.org/10.1007/s41208-024-00705-2","url":null,"abstract":"Kuala Terengganu, one of the coastal zones in Malaysia, is prone to natural hazard factors, such as coastal erosion which may affect the morphological condition of the beaches in Terengganu. The beach morphological changes were driven by the seasonal monsoon such as Northeast Monsoon (NEM) and Southwest Monsoon (SWM). Hence, to understand the short-temporal morphological response of meso-tidal beaches during spring tide events throughout the lunar cycle phase, the study was investigated in Batu Buruk Beach, Kuala Terengganu. The coastal profiles, particularly during spring tide (Full Moon and New Moon phases) were collected from five (5) transects starting on October 2020 to October 2021. The monitoring of cross-shore was conducted using Real time Kinematic (RTK) to measure the cross-sectional area and sediment volume changes. The data collected were computed using profiler 3.2XL software. MIKE-21 numerical modeling software was used to simulate tidal elevation within the period of this study. The results showed that Batu Buruk Beach received significant impact from the lunar cycle, especially on sediment gain and loss. The cross-sectional analysis revealed positive sediment gains during the Full Moon. However, during the New Moon phase, erosion seemed to take place around the upper swash zone area. This provides an insight into the spring tide erosion and accretion and contributes some understanding to beach recovery processes.","PeriodicalId":22298,"journal":{"name":"Thalassas: An International Journal of Marine Sciences","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Identity of a rare Morphologically Abnormal Butterfly ray from the east Coast of India Resolved Through Molecular tool 通过分子工具确定印度东海岸一种罕见的形态异常蝴蝶射线的身份

Thalassas: An International Journal of Marine Sciences Pub Date : 2024-05-08 DOI: 10.1007/s41208-024-00717-y

Rajesh Kumar Behera, Swarup Ranjan Mohanty, Smrutirekha Acharya, Sandeep Kumar Mohapatra, Subhrendu Sekhar Mishra, K. K Bineesh, Anil Mohapatra

引用次数: 0