scholarly journals Improving Survival of Juvenile Scalloped Spiny Lobster (Panulirus homarus) and Crucifix Crab (Charybdis feriatus) Using Shelter and Live Prey

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 370
Author(s):  
Chia-Huan Ma ◽  
Po-Yu Huang ◽  
Yung-Cheng Chang ◽  
Yen-Ju Pan ◽  
Mohamad Nor Azra ◽  
...  
Keyword(s):  
Survival Rate ◽  
Litopenaeus Vannamei ◽  
Agonistic Behavior ◽  
Spiny Lobster ◽  
Control Group ◽  
Additional Source ◽  
Live Prey ◽  
Main Method ◽  
Spiny Lobsters

Cannibalism is a major problem in lobster and crab aquaculture. Reducing the aggressive characteristics of lobsters and crabs can improve survival during the culturing process. In this study, juvenile scalloped spiny lobsters (Panulirus homarus) and crucifix crabs (Charybdis feriatus) were both cultured under different shelter and live prey conditions. Groups with shelter (seaweed and cotton filter) showed a better survival rate than the control group (no shelter; p < 0.05) for both Pa. homarus and Char. feriatus. Co-culturing with live prey (Litopenaeus vannamei) significantly benefited the juveniles of Pa. homarus and visibly increased the survival of juvenile Char. feriatus. Although providing shelter is currently the main method for reducing agonistic behavior, it must be continually altered as the lobsters and crabs grow. Live prey can grow and attract lobsters and crabs to hunt them, and live prey can be supplemented at any time. They can also be used as an additional source of income during the harvest season.

scholarly journals The effect of probiotic and prebiotic-MOS on the survival, growth and immune competence on spiny lobster Panulirus homarus culture

2021 ◽  
Vol 919 (1) ◽  
pp. 012050
Author(s):  
Haryanti ◽  
Z Widiastuti ◽  
Fahrudin ◽  
S B M Sembiring ◽  
G N Permana ◽  
...  
Keyword(s):  
Immune Response ◽  
Body Weight ◽  
Health Status ◽  
Survival Rate ◽  
Target Genes ◽  
Spiny Lobster ◽  
Immune Competence ◽  
Initial Body Weight ◽  
Spiny Lobsters ◽  
Growth Differences

Abstract The use of probiotics and prebiotic to improve growth and health status of spiny lobster has been evaluated. The purpose of this study was to obtain the effect of probiotics and prebiotics for the culture of spiny lobster Panulirus homarus. The method was initiated with culturing of probiotics (4 strains) and supplemented it in a moist diets. Spiny lobster was collected from Jembrana-Bali waters with an initial body weight of 70.34 ± 4.5 g and cultured in concrete tanks with volume of 4 m3. Initial stock density for each treatment was 15 pcs / m3. The treatments tested were supplemented on moist diets with (A) probiotics, (B) probiotics and prebiotics-MOS (Mannan Oligo Sacharida) and (C) Controle (without probiotics and prebiotic) and each treatment with three replication. The results obtained that the survival rate of spiny lobster was not significantly different (P> 0.05), i.e. (A) 92.70%, (B) 93.33 (%) and (C) 93.33% respectively. However, the results of probiotics supplementation as well as a combination of probiotics and prebiotics showed growth differences compared to control (P<0.05), namely (A) 156.97 ± 6.17 g, (B) 153.75 ± 9.17 g, while (C) control 131.47 ± 7.91 g. The probiotics supplementation on moist diets could increased health status of spiny lobsters, this was expressed by target genes related to immunity (ALFHa-1, ALFHa-4, SAA, ProPO, Tgase and CP). Spiny lobster immunity increased by 2.60 to 42.7 times after challenging with MHD (Milky Haemolymph Disease). The supplementation of probiotics and prebiotics (MOS) could increase immune response by 2.10 to 25.75 times, respectively after challenging with MHD.

The effect of steroid hormone feeds on the reproductive biology of the spiny lobster, Panulirus interruptus (J. W. Randall, 1840) (Decapoda, Palinura)

Crustaceana ◽  
2015 ◽  
Vol 88 (12-14) ◽  
pp. 1367-1386 ◽  
Author(s):  
Fan-Hua Nan ◽  
Yu-Sheng Wu ◽  
Nung-Chieh Chang
Keyword(s):  
Treatment Group ◽  
Steroid Hormones ◽  
Reproductive Biology ◽  
Steroid Hormone ◽  
Spiny Lobster ◽  
Control Group ◽  
Panulirus Interruptus ◽  
Spiny Lobsters

In this study, the effects of adding steroid hormones to the feeds administered to cultures of the spiny lobster, Panulirus interruptus (J. W. Randall, 1840), were investigated. The results indicate that the addition of steroid hormones in the feeds evoke (1) an increase in the ratio of ovigerous versus non-ovigerous females of up to 13.68% as compared to the controls; (2) fertilized females were present several months longer in the treatment group than in the control group; and (3) the ovigerous period, i.e., the time from fertilization until release of the young, was substantially shorter under a regime of feeding with steroid hormone additions. As a conclusion, enrichment of the feeds with steroid hormones thus distinctly increases the yield of young spiny lobsters in the course of a year cycle.

scholarly journals Effects of Fermented Kefir as a Functional Feed Additive in Litopenaeus vannamei Farming

Fermentation ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 118
Author(s):  
Woosik Choi ◽  
Chi-Won Choi ◽  
Dang-Bao Son ◽  
Byeong-Chul Jeong ◽  
Hee-Chang Kim ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Survival Rate ◽  
Litopenaeus Vannamei ◽  
White Spot Syndrome Virus ◽  
Field Tests ◽  
Shrimp Farming ◽  
Feed Additive ◽  
Control Group ◽  
Pathogenic Microorganisms ◽  
Prevention Of Infections

Litopenaeus vannamei, known as whiteleg shrimp, is susceptible to infection by pathogenic microorganisms such as viruses and bacteria. Therefore, the prevention of infections in this shrimp is important to regulate the outbreaks of pathogenic microorganisms. In this study, we investigated the effects of kefir as a functional feed additive on innate immunity, survival against WSSV (White Spot Syndrome Virus) and productivity of L. vannamei. As a result, the treatment of kefir could upregulate six of seven genes crucial for innate immunity of L. vannamei. Also, the treatment of kefir directly improved the survival rate of L. vannamei against WSSV infection. Finally, in order to determine whether kefir can improve the productivity of shrimp, we carried out field tests in three aquaculture farms in South Korea. The weight of shrimp fed kefir was increased by 120% as well as the length, compared with that of the control group. These results demonstrate that kefir can be utilized as a functional feed additive to improve both innate immunity and productivity of L. vannamei in shrimp farming with no use of antibiotics.

scholarly journals A non-bioartificial liver support system combined with transplantation in HBV-related acute-on-chronic liver failure

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Peng Li ◽  
Xi Liang ◽  
Shan Xu ◽  
Ye Xiong ◽  
Jianrong Huang
Keyword(s):  
Survival Rate ◽  
Blood Loss ◽  
Liver Failure ◽  
Control Group ◽  
Observation Group ◽  
Intraoperative Blood Loss ◽  
Chronic Liver Failure ◽  
Short Term ◽  
Liver Support ◽  
Liver Support System

AbstractWe aim to determine the impact of an artificial liver support system (ALSS) treatment before liver transplantation (LT), and identify the prognostic factors and evaluate the predictive values of the current commonly used ACLF prognostic models for short-term prognosis after LT. Data from 166 patients who underwent LT with acute-on-chronic liver failure (ACLF) were retrospectively collected from January 2011 to December 2018 from the First Affiliated Hospital of Zhejiang University School of Medicine. Patients were divided into two groups depending on whether they received ALSS treatment pre-LT. In the observation group, liver function tests and prognostic scores were significantly lower after ALSS treatment, and the waiting time for a donor liver was significantly longer than that of the control group. Both intraoperative blood loss and period of postoperative ICU care were significantly lower; however, there were no significant differences between groups in terms of total postoperative hospital stays. Postoperative 4-week and 12-week survival rates in the observation group were significantly higher than those of the control group. Similar trends were also observed at 48 and 96 weeks, however, without significant difference. Multivariate Cox regression analysis of the risk factors related to prognosis showed that preoperative ALSS treatment, neutrophil–lymphocyte ratio, and intraoperative blood loss were independent predicting factors for 4-week survival rate after transplantation. ALSS treatment combined with LT in patients with HBV-related ACLF improved short-term survival. ALSS treatment pre-LT is an independent protective factor affecting the 4-week survival rate after LT.

scholarly journals The Anti-PD-1/PD-L1 Immunotherapy for Gastric Esophageal Cancer: A Systematic Review and Meta-Analysis and Literature Review

2021 ◽  
Vol 28 ◽  
pp. 107327482199743
Author(s):  
Ke Chen ◽  
Xiao Wang ◽  
Liu Yang ◽  
Zheling Chen
Keyword(s):  
Overall Survival ◽  
Esophageal Cancer ◽  
Survival Rate ◽  
Meta Analysis ◽  
Response Rates ◽  
Control Group ◽  
Term Survival ◽  
Long Term Survival ◽  
And Control

Background: Treatment options for advanced gastric esophageal cancer are quite limited. Chemotherapy is unavoidable at certain stages, and research on targeted therapies has mostly failed. The advent of immunotherapy has brought hope for the treatment of advanced gastric esophageal cancer. The aim of the study was to analyze the safety of anti-PD-1/PD-L1 immunotherapy and the long-term survival of patients who were diagnosed as gastric esophageal cancer and received anti-PD-1/PD-L1 immunotherapy. Method: Studies on anti-PD-1/PD-L1 immunotherapy of advanced gastric esophageal cancer published before February 1, 2020 were searched online. The survival (e.g. 6-month overall survival, 12-month overall survival (OS), progression-free survival (PFS), objective response rates (ORR)) and adverse effects of immunotherapy were compared to that of control therapy (physician’s choice of therapy). Results: After screening 185 studies, 4 comparative cohort studies which reported the long-term survival of patients receiving immunotherapy were included. Compared to control group, the 12-month survival (OR = 1.67, 95% CI: 1.31 to 2.12, P < 0.0001) and 18-month survival (OR = 1.98, 95% CI: 1.39 to 2.81, P = 0.0001) were significantly longer in immunotherapy group. The 3-month survival rate (OR = 1.05, 95% CI: 0.36 to 3.06, P = 0.92) and 18-month survival rate (OR = 1.44, 95% CI: 0.98 to 2.12, P = 0.07) were not significantly different between immunotherapy group and control group. The ORR were not significantly different between immunotherapy group and control group (OR = 1.54, 95% CI: 0.65 to 3.66, P = 0.01). Meta-analysis pointed out that in the PD-L1 CPS ≥10 sub group population, the immunotherapy could obviously benefit the patients in tumor response rates (OR = 3.80, 95% CI: 1.89 to 7.61, P = 0.0002). Conclusion: For the treatment of advanced gastric esophageal cancer, the therapeutic efficacy of anti-PD-1/PD-L1 immunotherapy was superior to that of chemotherapy or palliative care.

scholarly journals Oral Vaccination of Grass Carp (Ctenopharyngodon idella) with Baculovirus-Expressed Grass Carp Reovirus (GCRV) Proteins Induces Protective Immunity against GCRV Infection

Vaccines ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 41
Author(s):  
Changyong Mu ◽  
Qiwang Zhong ◽  
Yan Meng ◽  
Yong Zhou ◽  
Nan Jiang ◽  
...  
Keyword(s):  
Survival Rate ◽  
Grass Carp ◽  
Oral Vaccine ◽  
Serum Antibody ◽  
Ctenopharyngodon Idella ◽  
Control Group ◽  
Oral Vaccination ◽  
Grass Carp Reovirus ◽  
Silkworm Pupae ◽  
Grass Carp Ctenopharyngodon Idella

The grass carp reovirus (GCRV) causes severe hemorrhagic disease with high mortality and leads to serious economic losses in the grass carp (Ctenopharyngodon idella) industry in China. Oral vaccine has been proven to be an effective method to provide protection against fish viruses. In this study, a recombinant baculovirus BmNPV-VP35-VP4 was generated to express VP35 and VP4 proteins from GCRV type Ⅱ via Bac-to-Bac baculovirus expression system. The expression of recombinant VP35-VP4 protein (rVP35-VP4) in Bombyx mori embryo cells (BmE) and silkworm pupae was confirmed by Western blotting and immunofluorescence assay (IFA) after infection with BmNPV-VP35-VP4. To vaccinate the grass carp by oral route, the silkworm pupae expressing the rVP35-VP4 proteins were converted into a powder after freeze-drying, added to artificial feed at 5% and fed to grass carp (18 ± 1.5 g) for six weeks, and the immune response and protective efficacy in grass carp after oral vaccination trial was thoroughly investigated. This included blood cell counting and classification, serum antibody titer detection, immune-related gene expression and the relative percent survival rate in immunized grass carp. The results of blood cell counts show that the number of white blood cells in the peripheral blood of immunized grass carp increased significantly from 14 to 28 days post-immunization (dpi). The differential leukocyte count of neutrophils and monocytes were significantly higher than those in the control group at 14 dpi. Additionally, the number of lymphocytes increased significantly and reached a peak at 28 dpi. The serum antibody levels were significantly increased at Day 14 and continued until 42 days post-vaccination. The mRNA expression levels of immune-related genes (IFN-1, TLR22, IL-1β, MHC I, Mx and IgM) were significantly upregulated in liver, spleen, kidney and hindgut after immunization. Four weeks post-immunization, fish were challenged with virulent GCRV by intraperitoneal injection. The results of this challenge study show that orally immunized group exhibited a survival rate of 60% and relative percent survival (RPS) of 56%, whereas the control group had a survival rate of 13% and RPS of 4%. Taken together, our results demonstrate that the silkworm pupae powder containing baculovirus-expressed VP35-VP4 proteins could induce both non-specific and specific immune responses and protect grass carp against GCRV infection, suggesting it could be used as an oral vaccine.

scholarly journals In vivo evaluation of a recombinant N-acylhomoserine lactonase formulated in a hydrogel using a murine model infected with MDR Pseudomonas aeruginosa clinical isolate, CCASUP2

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Masarra M. Sakr ◽  
Walid F. Elkhatib ◽  
Khaled M. Aboshanab ◽  
Eman M. Mantawy ◽  
Mahmoud A. Yassien ◽  
...  
Keyword(s):  
Survival Rate ◽  
Murine Model ◽  
Histopathological Examination ◽  
Healing Process ◽  
Bacterial Count ◽  
Treated Group ◽  
Control Group ◽  
In Vivo Evaluation ◽  
Systemic Spread

AbstractFailure in the treatment of P. aeruginosa, due to its broad spectrum of resistance, has been associated with increased patient mortality. One alternative approach for infection control is quorum quenching which was found to decrease virulence of such pathogen. In this study, the efficiency of a recombinant Ahl-1 lactonase formulated as a hydrogel was investigated to control the infection of multidrug resistant (MDR) P. aeruginosa infected burn using a murine model. The recombinant N-acylhomoserine lactonase (Ahl-1) was formulated as a hydrogel. To test its ability to control the infection of MDR P. aeruginosa, a thermal injury model was used. Survival rate, and systemic spread of the infection were evaluated. Histopathological examination of the animal dorsal skin was also done for monitoring the healing and cellular changes at the site of infection. Survival rate in the treated group was 100% relative to 40% in the control group. A decrease of up to 3 logs of bacterial count in the blood samples of the treated animals relative to the control group and a decrease of up to 4 logs and 2.3 logs of bacteria in lung and liver samples, respectively were observed. Histopathological examination revealed more enhanced healing process in the treated group. Accordingly, by promoting healing of infected MDR P. aeruginosa burn and by reducing systemic spread of the infection as well as decreasing mortality rate, Ahl-1 hydrogel application is a promising strategy that can be used to combat and control P. aeruginosa burn infections.

scholarly journals Effect of Honey and Syrup Diets Enriched with 1,3-1,6 β-Glucans on Honeybee Survival Rate and Phenoloxidase Activity (Apis mellifera L. 1758)

2021 ◽  
Vol 8 (7) ◽  
pp. 130
Author(s):  
Simona Sagona ◽  
Baldassare Fronte ◽  
Francesca Coppola ◽  
Elena Tafi ◽  
Matteo Giusti ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Survival Rate ◽  
Significant Variation ◽  
Innate Immune ◽  
Control Group ◽  
Phenoloxidase Activity ◽  
Immune Modulators ◽  
Negative Effect ◽  
Potential Negative Effect ◽  
Combined Action

β-glucans can activate the animal innate immune system by acting as immune-modulators and inducing various stimulatory effects. The aim of this study was to investigate the effect of 1,3-1,6 β-glucans administered orally for 96 h on Apis mellifera workers (newly emerged and nurse bees). β-glucans were included in honey and syrup. Survival rate and phenoloxidase activity were measured. In both newly emerged and nurse bees, β-glucans supplementation did not affect survival rate (p > 0.05). Conversely, phenoloxidase activity was higher in both newly emerged bees (p = 0.048) and nurse bees (p = 0.014) fed with a honey diet enriched with β-glucans compared to those fed with only honey. In both the newly emerged and nurse bees, no statistical differences in phenoloxidase activity were recorded between the group fed with a syrup-based diet enriched with β-glucans and the control group (p > 0.05). The absence of significant variation in survival suggests that the potential negative effect of β-glucans in healthy bees could be mitigated by their metabolism. Conversely, the inclusion of β-glucans in a honey-based diet determined an increase of phenoloxidase activity, suggesting that the effect of β-glucan inclusion in the diet of healthy bees on phenoloxidase activity could be linked to the type of base-diet. Further investigations on β-glucans metabolism in bees, on molecular mechanism of phenoloxidase activation by 1,3-1,6 β-glucans, and relative thresholds are desirable. Moreover, investigation on the combined action of honey and β-glucans on phenoloxidase activity are needed.

scholarly journals Effects of Feed Mixed with Lactic Acid Bacteria and Carbon, Nitrogen, Phosphorus Supplied to the Water on the Growth and Survival Rate of White Leg Shrimp (Penaeus vannamei) Infected with Acute Hepatopancreatic Necrosis Disease Caused by Vibrio parahaemolyticus

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 280
Author(s):  
Linh Nguyen Thi Truc ◽  
Tuu Nguyen Thanh ◽  
To Tran Thi Hong ◽  
Day Pham Van ◽  
Minh Vo Thi Tuyet ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Survival Rate ◽  
Lactic Acid Bacteria ◽  
Vibrio Parahaemolyticus ◽  
Control Group ◽  
Penaeus Vannamei ◽  
Growth And Survival ◽  
Acute Hepatopancreatic Necrosis Disease ◽  
Nitrogen Phosphorus ◽  
Shrimp Health

This study aimed to evaluate the growth, survival rate, and resistance to acute hepatopancreatic necrosis disease (AHPND) of white leg shrimp (Penaeus vannamei) by using Lactobacillus plantarum, Lactobacillus fermentum, and Pediococcus pentosaceus mixed with feed, and at the same time supplying CNP in a ratio of 15:1:0.1 to the water. As a result, the treatments that shrimp were fed with feed containing lactic acid bacteria (LAB), especially L. plantarum, have increased shrimp growth, total hemocyte cells, granulocyte cells, and hyaline cells significantly (p < 0.05) in comparison to the control group. The supply of CNP to the water has promoted the intensity of V. parahaemolyticus effects on shrimp health and significantly decreased total hemocyte cells, granulocyte cells, and hyaline cells by 30–50% in the period after three days of the challenge, except in L. plantarum treatment, which had only a 20% decrease compared to other treatments. In CNP supplying treatments, the AHPND infected rate and mortality of shrimp were higher than those in other treatments. In summary, the supply of CNP had significantly reduced the shrimp’s immune response and promoted the susceptibility of shrimp to AHPND in both cases of use with and without LAB-containing diets.

scholarly journals Do drowning and anoxia kill head lice?

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 8 ◽  
Author(s):  
Kerdalidec Candy ◽  
Sophie Brun ◽  
Patrick Nicolas ◽  
Rémy Durand ◽  
Remi N. Charrel ◽  
...  
Keyword(s):  
Survival Rate ◽  
Respiratory System ◽  
Water Immersion ◽  
Control Group ◽  
Head Lice ◽  
Pediculus Humanus Capitis ◽  
Untreated Control Group ◽  
Pediculus Humanus ◽  
Hot Air ◽  
Mechanical Methods

Chemical, physical, and mechanical methods are used to control human lice. Attempts have been made to eradicate head lice Pediculus humanus capitis by hot air, soaking in various fluids or asphyxiation using occlusive treatments. In this study, we assessed the maximum time that head lice can survive anoxia (oxygen deprivation) and their ability to survive prolonged water immersion. We also observed the ingress of fluids across louse tracheae and spiracle characteristics contrasting with those described in the literature. We showed that 100% of lice can withstand 8 h of anoxia and 12.2% survived 14 h of anoxia; survival was 48.9% in the untreated control group at 14 h. However, all lice had died following 16 h of anoxia. In contrast, the survival rate of water-immersed lice was significantly higher when compared with non-immersed lice after 6 h (100% vs. 76.6%, p = 0.0037), and 24 h (50.9% vs. 15.9%, p = 0.0003). Although water-immersed lice did not close their spiracles, water did not penetrate into the respiratory system. In contrast, immersion in colored dimeticone/cyclomethicone or colored ethanol resulted in penetration through the spiracles and spreading to the entire respiratory system within 30 min, leading to death in 100% of the lice.

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