Tropical life sciences research最新文献

{"title":"Food Source Identification of Macrozoobenthos in the Mangrove Ecosystem of Lubuk Damar, Aceh Tamiang, Indonesia: A Stable Isotope Approach.","authors":"Ananingtyas S Darmarini, Yusli Wardiatno, Tri Prartono, Kadarwan Soewardi, Irwan Iskandar, Musti'atin, Sonja Kleinertz","doi":"10.21315/tlsr2024.35.2.2","DOIUrl":"10.21315/tlsr2024.35.2.2","url":null,"abstract":"<p><p>Changes in the existence of mangroves will have an impact on changes in food webs in their respective areas. The purpose of this study was to determine the food source of the macrozoobenthos community within the Lubuk Damar mangrove ecosystem. Stable isotopes, carbon and nitrogen were used to describe the food sources for macrozoobenthos in the mangrove ecosystem of the Lubuk Damar Ecosystem, Aceh Tamiang, Indonesia. The stable isotope analysis of ¹³C and ¹⁵N was carried out using Isotopic-Ratio Mass Spectrometry. Potential food sources at the study site based on stable isotope ratios ranged between -29.08‰ to -20.66‰ (δ¹³C) and 4.07‰ to 5.63‰ (δ¹⁵N); macrozoobenthos -25.00‰ to -14.76‰ (δ¹³C) and 5.59‰ to 7.73‰ (δ¹⁵N). The potential food sources tested at the study site consisted of seven sources, but not all food sources in the ecosystem were consumed by the invertebrate community. This study shows that mangrove leaf litter serves as a food source for some invertebrates, such as the bivalves, gastropods, polychaetes, sipunculans, brachiopods and crustaceans. The results of this study evidence that the examined mangrove ecosystem has a function as a provider of food sources in the surrounding waters, therefore its existence is very important supporting diversity of coastal waters.</p>","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371401/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Carriage of <i>tetA</i>, <i>sul1</i>, <i>sul2</i> and <i>bla</i> _TEM Resistance Genes among the Multidrug-resistant Uropathogenic <i>Escherichia coli</i> (UPEC) Strains from Malaysian Patients.","authors":"Jia-Jin Chin, Hui-Mei Lee, Shuet-Yi Lee, Yin-Ying Lee, Choy-Hoong Chew","doi":"10.21315/tlsr2024.35.2.10","DOIUrl":"10.21315/tlsr2024.35.2.10","url":null,"abstract":"<p><p>The rapid emergence of multidrug-resistant (MDR) uropathogenic <i>Escherichia coli</i> (UPEC) strains pose a critical challenge in urinary tract infection (UTI) treatments. However, little work elucidated the resistance mechanisms of the MDR UPEC clinical strains in Malaysia. Therefore, this study aimed to determine the antimicrobial susceptibility profiles and the prevalence of antimicrobial resistance genes among the UPEC strains. Polymerase chain reactions were conducted to detect the presence of 6 antimicrobial resistance genes among 60 UPEC strains. Meanwhile, the antimicrobial resistance profiles against 9 antimicrobials were examined through the Kirby-Bauer disk diffusion method. In this study, the MDR isolates accounted for 40.0% (24/60), with the highest prevalence of resistance towards ampicillin (43/60; 71.7%), followed by tetracycline (31/60; 51.7%), nalidixic acid (30/60; 50.0%), co-trimoxazole (20/60, 33.3%), ciprofloxacin (19/60, 31.7%), levofloxacin (16/60, 21.6%) and chloramphenicol (10/60, 16.7%). In contrast, low resistance rates were observed among minocycline (1/60; 1.7%) and imipenem (0/60; 0.0%). <i>bla</i> _TEM was the most prevalent gene (36/60; 60.0%), followed by <i>tetA</i> (27/60; 45.0%), <i>sul2</i> (25/60; 41.7%), <i>sul1</i> (13/60; 21.7%) and <i>tetB</i> (8/60; 13.3%). Surprisingly, <i>bla</i> _SHV was not detected among the UPEC isolates. The MDR, ampicillin and tetracycline-resistant isolates were significantly associated with a higher prevalence of <i>tetA</i>, <i>sul1</i>, <i>sul2</i> and <i>bla</i> _TEM. In contrast, <i>tetB</i> displayed no significant relationship with any of the antimicrobials tested. The patient's age and gender were not the risk factors for the carriage of the resistance genes. Our findings identified the common resistance genes carried by the antimicrobial resistant UPEC isolates and provide valuable insights into developing the best antibiotic prescription regime to treat UTIs in our local scene.</p>","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371398/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Performances of Adlay (<i>Coix lacryma-jobi</i> L.) As Component of Agroforestry on Teak (<i>Tectona grandis</i> L.f.) Plantation.","authors":"Titi Juhaeti, Nuril Hidayati, Ninik Setyowati, Albert Husen Wawo, Wahyu Widiyono","doi":"10.21315/tlsr2024.35.2.5","DOIUrl":"10.21315/tlsr2024.35.2.5","url":null,"abstract":"<p><p>Adlay is an edible high nutritious minor cereal. The research aimed to study the adlay performance when cultivated intercropped on young teak (<i>Tectona grandis</i> L.f.) plantation. The treatments were consisted of two factors that were arranged by factorial (3 × 3) in randomised completed block design with four replicates. The first factor was three fertilisation dosages of NPK (16-16-16), as 0 g/hole (F0), 2 g/hole (F2) and 4 g/hole (F4). The second factors were three planting space as 2 m × 2 m (PS2), 3 m × 3 m (PS3) and 4 m × 4 m (PS4). The parameter observed were vegetative growth which was consisted of plant height, the number of leaves, tillers and sub tillers, leaf chlorophyll content, grain production and biomass weight. The results revealed that fertilisation treatment were significantly affected the growth and production of adlay. On 12 weeks after planting, the F4 treatment produced the tallest plant, and the highest leaf number. The highest grain number/plant was achieved on the F2 treatment that was significantly different compared with the control (F0). The shading intensity due to the teak coverage significantly affected adlay growth and production. The PS4 treatment produced the highest number of leaves, tillers and grains. The combination of F2 and PS4 treatments resulted in the best growth and production. The PS2 treatment which has lower light intercepted by plants due to lower incident light intensity, resulting in a significant reduction in plant growth and production. It is suggested that adlay offers potency as a component of agro-forestry on the teak plantations.</p>","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371402/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioassay-Guided Fractionation of Acetone and Methanol Extracts of <i>Quercus infectoria</i> Galls with Antimalarial Properties.","authors":"Nurul Hammizah Hamidon, Anjana Chamilka Thuduhenage Dona, Nik Nor Imam Nik Mat Zin, Nurul Izza Nordin, Shaida Fariza Sulaiman, Nurhidanatasha Abu-Bakar","doi":"10.21315/tlsr2024.35.2.8","DOIUrl":"10.21315/tlsr2024.35.2.8","url":null,"abstract":"<p><p>The antimalarial properties of crude extracts from <i>Quercus infectoria</i> galls were investigated through bioassay-guided fractionation. Acetone (QIA) and methanol (QIM) crude extracts have been reported to have promising antimalarial activity against <i>Plasmodium falciparum</i> (3D7 strain). These extracts were subjected to fractionation using automated preparative high-performance liquid chromatography (prep-HPLC) to identify the most active fractions. Nine fractions were isolated from each extract, of which the fractions QIA11 and QIM16 showed antimalarial activity, with IC₅₀ values of 17.65 ± 1.82 μg/mL and 24.21 ± 1.88 μg/mL, respectively. In comparison, the standard antimalarial drug artemisinin has an IC₅₀ value of 0.004 ± 0.001 μg/mL). Through high-resolution liquid chromatography coupled with mass spectrometry (HR-LCMS) analysis of the fractions, four known compounds were successfully identified: gallic acid, ellagic acid, 1,3,6-tris-o-(3,4,5-trihydroxybenzoyl)-beta-d-glucose and 1-O,6-O-digalloyl-beta-D-glucose.</p>","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371400/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential Utilisation of <i>Theobroma cacao</i> Pod Husk Extract: Protective Capability Evaluation Against Pollution Models and Formulation into Niosomes.","authors":"Erika Chriscensia, Joshua Nathanael, Urip Perwitasari, Agus Budiawan Naro Putra, Shakila Angjaya Adiyanto, Pietradewi Hartrianti","doi":"10.21315/tlsr2024.35.2.6","DOIUrl":"10.21315/tlsr2024.35.2.6","url":null,"abstract":"<p><p><i>Theobroma cacao</i> L. beans have long been used for food and medicinal purposes. However, up to 52%-76% of <i>Theobroma cacao</i> L. fruit comprises its husk, which are regarded as waste and oftentimes thrown away. In fact, cocoa pod husks actually possess a high antioxidant capacity. Antioxidants can be used to fight free radicals that are produced by environmental pollution. In order to simulate the effects of pollution, H²O² and cigarette smoke extract models were used respectively. However, the antioxidant properties are limited on the skin due to poor penetration. Hence, in order to increase the topical penetration, cocoa pod husk extract (CPHE) was also formulated into niosomes thereafter. CPHE was characterised using total phenolic content, total flavonoid content and three antioxidant assays. After that, cytotoxicity and cytoprotective assay were conducted on HaCaT cells, which represent the skin epidermis. CPHE was then formulated into niosomes subjected to stability and penetration studies for three months. CPHE was shown to contain 164.26 ± 1.067 mg GAE/g extract in total phenolic content and 10.72 ± 0.32 mg QCE/g extract in total flavonoid content. In addition, our results showed that CPHE possesses similar antioxidant capacity through 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, around eight-fold less through ABTS assay and approximately twelve-fold less through Ferric reducing power (FRAP) assay. The extract also showed comparable cytoprotective properties to that of standard (ascorbic acid). The niosome formulation was also able to increase the penetration compared to unencapsulated extract, as well as possess a good stability profile. This showed that CPHE, in fact, could be repurposed for other uses other than being thrown away as waste.</p>","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371407/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142133932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length-Weight Relationship and Condition Factor of Fishes in Two Major Rivers, the Chao Phraya and the Bang Pakong, in Thailand","authors":"Chayajit Deekrachang, Chaiwut Grudpun, Apinun Suvarnaraksha, Pisit Phomikong, Tuantong Jutagate","doi":"10.21315/tlsr2024.35.1.14","DOIUrl":"https://doi.org/10.21315/tlsr2024.35.1.14","url":null,"abstract":"Length-weight relationship (LWR) was used as a tool to assess the status of fish stocks, through condition factor, in major rivers in Thailand. Fifty-one (51) fish species from each river, i.e., The examined for LWR using eleven years of monitoring data (2010–2020) for Bang Pakong and 14 years of monitoring data (2007–2020) for Chao Phraya, which comprised 57,871 samples. The parameters for LWR and condition factor were examined by species and by body shape, i.e., ovate, oblong, elongate or eel-like. The coefficient of determination (r2) of all log-transformed LWRs was greater than 0.90. Parameter b of LWR ranged between 2.06 and 3.46 (median = 3.00) for fishes from the Chao Phraya River and between 1.72 and 3.68 (median = 2.76) for fishes from the Bang Pakong River. The overall condition factor, which implies the well-being that indicates the health or fattening of the fishes in a stock, ranged between 0.93 and 1.09. There was no significant difference in the overall well-being (P = 0.279) between the two rivers. Fishes with oblong and elongate shapes in the Chao Phraya River showed higher median values of parameter b of LWR than those from the Bang Pakong River. However, there was no significant difference (P > 0.05) in the well-being of the fish stocks between the two rivers when pooled by shape. The findings are fundamental information for fish stock assessment in the two rivers, which greatly support the small-scale fisheries in Thailand.","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140739905","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}

{"title":"Leaf Architecture and Genome Size Variation of Durio zibethinus L. from Jelebu, Negeri Sembilan, Malaysia","authors":"K. Shamin-Shazwan, R. Shahari, Che Nurul Aini, Che Amri, Razik Midin, Mohd Razik Midin","doi":"10.21315/tlsr2024.35.1.10","DOIUrl":"https://doi.org/10.21315/tlsr2024.35.1.10","url":null,"abstract":"Durio zibethinus L. is known as the “king of fruit” in Malaysia. Meanwhile, Jelebu, Negeri Sembilan has always become the top choice district to visit for durian lover for its Durian Kampung Jelebu, which possessed good quality on par with top D. zibethinus clones such as D197 Musang King and D24. However, there is still lacking in taxonomic data of D. zibethinus especially from Jelebu. This study aimed to analyse the leaf architecture and genome size variations of selected D. zibethinus accessions from Jelebu. Five D. zibethinus accessions from Jelebu were examined. Thirty-seven parameters of gross leaf morphological characteristics and leaf venation pattern were observed and recorded for identification and classification of D. zibethinus accessions from Jelebu. Seven parameters have been recorded which are petiole length, petiole features, leaf size, leaf shape, leaf base shape, lower leaf surface colour and areolation could be used in differentiating between accessions. Results of this study showed the intraspecific variations existed among D. zibethinus accessions from Jelebu with a genome size varying between 1.7433 pg and 1.800 pg. In conclusion, data on leaf architecture and genome size variations from D. zibethinus accessions are beneficial for early plant identification and classification.","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140739802","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}

{"title":"Genetic Diversity of White-spotted Rabbitfish (Siganus canaliculatus) on Different Seagrass Habitats in Inner Ambon Bay, Indonesia Based on Mitochondrial CO1 Sequences","authors":"H. Latuconsina, N. A. Butet, Ridwan Affandi, M. Kamal, Syamsul Bachry, A. A. Hakim","doi":"10.21315/tlsr2024.35.1.15","DOIUrl":"https://doi.org/10.21315/tlsr2024.35.1.15","url":null,"abstract":"This study aims to analyse the genetic diversity of Siganus canaliculatus in the Inner Ambon Bay (IAB) waters. DNA of S. canaliculatus specimens collected from IAB was extracted from tissues using a Tissue Genomic DNA Mini Kit, and partial CO1 genes were amplified using pair of universal primers. Genetic distances were determined by Kimura 2-parameter, and phylogenetic trees were constructed using the neighbour-joining method in MEGA 10.2.2 software. Arlequin software was used to analyse Fixation Index (Fst) and Analysis of Molecular Variance (AMOVA). There are three SNPs of S. canaliculatus from IAB that distinguish GenBank sequence data from S. canaliculatus. In Tanjung Tiram population group, contained three specific 677 (A), 679 (G), 703 (T) sites and two 693 (G), 714 (A) sites for the Nania population. Haplotype and nucleotide diversity of each population range from 0.000 to 1,000 and 0.000 to 0.004. Intra- and inter-population genetic differentiation were 21.19% dan 78.81%, respectively. Intra- and inter-population genetic distances were in range of 0.40–1.13 and 0.00–0.37, respectively. The pattern and direction of tidal currents as a link or barrier to spatial distribution and connectivity of S. canaliculatus larvae between seagrass habitats, as well as the presence of different anthropogenic pressures in each seagrass habitat, are thought to influence the genetic characteristics (genetic diversity, genetic variation, genetic differentiation and genetic distance) of S. canaliculatus populations in IAB waters. The results of this study provide information about the urgency of habitat-based fisheries management to support sustainable utilisation.","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140737783","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}

{"title":"Species Identification of Rehabilitated Critically Endangered Orangutans Through DNA Forensic: Implication for Conservation","authors":"Christy Lavenia, Dwi Sendi, Priyono, D. S. Yudha, Tuty Arisuryanti","doi":"10.21315/tlsr2024.35.1.7","DOIUrl":"https://doi.org/10.21315/tlsr2024.35.1.7","url":null,"abstract":"Rehabilitating and releasing orangutans back into the wild is one of the conservation strategies being pursued to conserve orangutans. However, the species determination between Sumatran, Tapanuli, and Bornean orangutans is essential for reintroduction to avoid outbreeding depression, which could lead to DNA hybridisation and increase the probability of recessive characters. Here, we reported on an investigation of three orangutans in which DNA forensic techniques were used to identify the species before release and reintroduction to their habitat. By applying DNA forensic, the orangutan was successfully confirmed with high probabilities (100%) by identifying two orangutan species, Pongo abelii and Pongo pygmaeus wurmbii. Based on ambiguous morphology, we found the possibility of orangutan species being misidentified in rehabilitation. This case report demonstrates the importance of molecular diagnostics to identify the orangutan species. We also provide workflow recommendations from genetic aspect for rehabilitated orangutans. These recommendations will enable decision-makers to consider genetics when assessing future management decisions, which will help ensure that the orangutan species is effectively conserved.","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140737290","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}

{"title":"Moulting Performances Evaluation of Female Orange Mud Crab, Scylla olivacea (Herbst, 1796) In-Captivity: Effects of Water Salinity and Limb Autotomy","authors":"Amin-Safwan Adnan, Lawrencia Casey Gamburud, Izzah S Mohd Affendi, Mardhiyyah Mohd Pauzi, H. Mahsol, T. Muhammad, H. Manan, Muhammad Naimullah, Che-Zulkifli, Che Ismail, Muhd-Farouk Harman, M. Syafaat, Nadirah Musa, Hongyu Ma, M. Ikhwanuddin, Izzah-Syafiah Mohd","doi":"10.21315/tlsr2024.35.1.11","DOIUrl":"https://doi.org/10.21315/tlsr2024.35.1.11","url":null,"abstract":"Female Scylla olivacea has become more popular in Malaysia as emerging species mainly for soft-shell crabs and crab fattening (to increase weight, size and ovary maturation so that they can be sold at a higher price). To harvest crabs in soft-shell conditions and fattening, both conditions depend mostly on moulting events. To accelerate the moulting process, the manipulation of water parameter (salinity) and autotomy of the limb is commonly used. In this study, the evaluation of the moulting performances of full limb autotomy (the removal of all the appendages except for the swimming legs) and non-ablated (control) using immature S. olivacea cultured in three different salinity treatments (10 ppt, 20 ppt and 30 ppt) were performed. Results indicate there were significant differences between mud crab’s culture duration, BW increments, growth performances and feeding efficiency with salinity. However, CW increments and survival indicate no significant effect with salinity. Meanwhile, limb autotomy proved to affect the culture duration, BW increments, survival and feeding efficiency of S. olivacea. The study concludes that both salinity and limb autotomy play significant roles in moulting performances of S. olivacea, with 20 ppt being the best salinity to stimulate S. olivacea moulting and development compared with the other two treatments (10 ppt and 30 ppt). Limb autotomy also indicates promising results as this technique proved to accelerate the moulting duration of S. olivacea with a 100% moulting percentage within 30 days. Therefore, the outcome would certainly benefit in the aquaculture production of this species of commercial importance mainly on soft-shell crabs production and also emerge as crabs fattening technique.","PeriodicalId":23477,"journal":{"name":"Tropical life sciences research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140738138","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}