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https://www.readbyqxmd.com/read/28812668/evolutionary-transitions-towards-eusociality-in-snapping-shrimps
#1
Solomon Tin Chi Chak, J Emmett Duffy, Kristin M Hultgren, Dustin R Rubenstein
Animal social organization varies from complex societies where reproduction is dominated by a single individual (eusociality) to those where reproduction is more evenly distributed among group members (communal breeding). Yet, how simple groups transition evolutionarily to more complex societies remains unclear. Competing hypotheses suggest that eusociality and communal breeding are alternative evolutionary endpoints, or that communal breeding is an intermediate stage in the transition towards eusociality. We tested these alternative hypotheses in sponge-dwelling shrimps, Synalpheus spp...
March 20, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28808390/immunomodulatory-cytotoxicity-and-antioxidant-activities-of-roots-of-ziziphus-mauritiana
#2
Samina Afzal, Murium Batool, Bashir Ahmad Ch, Ashfaq Ahmad, Muhammad Uzair, Khurram Afzal
AIMS: The study is conducted to evaluate the immunomodulatory, cytotoxicity, and antioxidant potential of Ziziphus mauritiana (Rhamnaceae). Phytochemical analysis of Z. mauritiana revealed the presence of alkaloids, anthraquinone glycoside, cardiac glycoside, saponin, tannin, and flavonoids. METHODOLOGY: The cytotoxicity of the plant Z. mauritiana was evaluated by brine shrimp lethality test. Antioxidant parameters such as superoxide dismutase (SOD), total antioxidant capacity (T-AOC), and malondialdehyde (MDA) levels were calculated in the plasma of rats after chronic administration of 400 mg/kg of Z...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28806547/environmental-life-cycle-assessment-of-seafood-production-a-case-study-of-trawler-catches-in-tunisia
#3
Khaled Abdou, Didier Gascuel, Joël Aubin, Mohamed Salah Romdhane, Frida Ben Rais Lasram, François Le Loc'h
The Gulf of Gabes is one of the most productive fishery areas in the southern Mediterranean Sea. It is archetypal of an ecosystem in which the effects of fisheries are most pronounced. Demersal trawling is the main fishing activity in the Gulf of Gabes. Life Cycle Assessment (LCA) was applied to assess the environmental performance landing 1t of seafood with wooden demersal trawlers in the Gulf of Gabes. Impact categories included in the study were abiotic depletion potential (ADP), acidification potential (AP), eutrophication potential (EP), global warming potential (GWP), ozone depletion potential (ODP), photochemical oxidant formation potential (POFP), human toxicity potential (HTP), marine eco-toxicity potential (METP), terrestrial eco-toxicity potential (TETP), land occupation potential (LOP), and total cumulative energy demand (TCED)...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28792491/genetic-legacy-of-tertiary-climatic-change-a-case-study-of-two-freshwater-loaches-schistura-fasciolata-and-pseudogastromyzon-myersi-in-hong-kong
#4
W Y Wong, K Y Ma, L M Tsang, K H Chu
The high biodiversity and strong population structure of freshwater fauna has often been attributed to historical geological and climatic alterations. The impact of these historical changes on obligate freshwater species on a small geographical scale has not been well understood due to the lack of fine-scale comparative phylogeographic studies. Strong population structure has been reported in a goby and a caridean shrimp in Hong Kong, a small but highly developed city in South China, but the common drivers of population differentiation in freshwater fauna in this region remain unclear...
August 9, 2017: Heredity
https://www.readbyqxmd.com/read/28792418/prevalence-diversity-and-co-occurrence-of-the-white-spot-syndrome-virus-monodon-baculovirus-and-penaeus-stylirostris-densovirus-in-wild-populations-of-penaeus-monodon-in-the-philippines
#5
Fredmoore L Orosco, Arturo O Lluisma
The farming of the black tiger shrimp Penaeus monodon in the Philippines relies on wild broodstock. PCR was thus used to determine the prevalence of white spot syndrome virus (WSSV), monodon baculovirus (MBV) and Penaeus stylirostris densovirus (PstDV) in a total of 178 shrimp from 6 geographically disparate locations where broodstock are captured for use in hatcheries. PCR amplicons were also sequenced to identify phylogenetic relationships of the virus haplotypes detected. Shrimp from southeastern Luzon (Camarines Norte) had the highest prevalence of each of the 3 viruses and were frequently co-infected with 2 or more viruses...
August 9, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28790979/modeling-the-combined-effect-of-pressure-and-mild-heat-on-the-inactivation-kinetics-of-escherichia-coli-listeria-innocua-and-staphylococcus-aureus-in-black-tiger-shrimp-penaeus-monodon
#6
Barjinder P Kaur, P Srinivasa Rao
The high-pressure inactivation of Escherichia coli, Listeria innocua, and Staphylococcus aureus was studied in black tiger shrimp (Penaeus monodon). The processing parameters examined included pressure (300 to 600 MPa) and temperature (30 to 50°C). In addition, the pressure-hold period (0 to 15 min) was investigated, thus allowing both single-pulse pressure effects (i.e., zero holding time) and pressure-hold effects to be explored. E. coli was found to be the most sensitive strain to single-pulse pressure, followed by L...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28783906/three-classes-of-steroids-in-typical-freshwater-aquaculture-farms-comparison-to-marine-aquaculture-farms
#7
Shan Liu, Hui Chen, Xiang-Rong Xu, Qin-Wei Hao, Jian-Liang Zhao, Guang-Guo Ying
This study provides a comprehensive analysis of the occurrence of androgens, glucocorticoids and progestogens in typical freshwater aquaculture farms in comparison with marine aquaculture farms. The results showed that more steroids were detected in the marine aquaculture farms. For all aquatic products, the total concentrations of steroids in fish muscle were 22-2000ng/g, which were much higher than those detected in crabs, shrimps or mollusks (0.5-8.1ng/g). Based on the hazard index of the selected steroids, most water samples were in the low or medium risks...
July 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28783248/coupling-metagenomics-with-cultivation-to-select-host-specific-probiotic-microorganisms-for-subtropical-aquaculture
#8
Jinming Cui, Minfeng Xiao, Mingzhu Liu, Zuowei Wang, Furong Liu, Liang Guo, Hailin Meng, Honggang Zhang, Jinfang Yang, Deng Deng, Shuangqiang Huang, Yingfei Ma, Chenli Liu
AIMS: To demonstrate a non-empirical workflow to select host-specific probiotics for aquaculture industry. METHODS AND RESULTS: By using both culture-dependent and -independent methods, we have systematically investigated, for the first time, the gut microbiota of twelve subtropical aquatic animal species. We found that the diversity, abundance, and distribution of gut microorganisms of these animals were host-specific, and that lactic acid bacteria (LAB) were predominant among the indigenous probiotic microbes...
August 7, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28783030/an-adult-cystidicolid-nematode-nematoda-cystidicolidae-from-the-subcutaneous-tissue-around-the-eye-of-percupinefish-diodon-nichthemerus-cuvier
#9
Kozue Sasaki, Yoshimi Miyagawa, Itsuki Kiyatake, Kiyoko Onda, Takaomi Ito, Mitsuhiko Asakawa
Three adult nematode specimens, all ovigerous females belonging to the family Cystidicolidae Skryabin, 1946, were found for the first time in the subcutaneous tissue around the eye of the captive porcupinefish Diodon nichthemerus Cuvier at a public aquarium in Osaka, Japan. Because no male was available, these could not be identified to the genus and species. This case highlights the risk of parasitism in aquaculture puffer fish, as these may ingest small shrimp, which probably act as intermediate hosts for the nematode...
July 10, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28781190/impingement-of-marine-organisms-in-a-tropical-atomic-power-plant-cooling-water-system
#10
S Barath Kumar, A K Mohanty, N P I Das, K K Satpathy, S K Sarkar
A one-year impingement monitoring was conducted at Madras Atomic Power Station (MAPS), Kalpakkam, southeastern coast of India and identified a total of 67 species of marine organisms in the cooling water system. Estimates of total annual impingement contributed about 1.47×10(6) individuals and 142.5t of biomass. Jellyfish contributed about 6.8×10(5) individuals and 135.6t of biomass. Crabs, shrimps and fish were the most vulnerable organisms contributing about 4.29×10(5) individuals, 1.39×10(5) individuals and 2...
August 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28776934/development-of-genome-and-transcriptome-derived-microsatellites-in-related-species-of-snapping-shrimps-with-highly-duplicated-genomes
#11
Kaitlyn M Gaynor, Joseph W Solomon, Stefanie Siller, Linnet Jessell, J Emmett Duffy, Dustin R Rubenstein
Molecular markers are powerful tools for studying patterns of relatedness and parentage within populations and for making inferences about social evolution. However, the development of molecular markers for simultaneous study of multiple species presents challenges, particularly when species exhibit genome duplication or polyploidy. We developed microsatellite markers for Synalpheus shrimp, a genus in which species exhibit not only great variation in social organization, but also interspecific variation in genome size and partial genome duplication...
August 4, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/28774308/polarity-directed-optimization-of-phytochemical-and-in-vitro-biological-potential-of-an-indigenous-folklore-quercus-dilatata-lindl-ex-royle
#12
Madiha Ahmed, Humaira Fatima, Muhammad Qasim, Bilquees Gul, Ihsan-Ul-Haq
BACKGROUND: Plants have served either as a natural templates for the development of new chemicals or a phytomedicine since antiquity. Therefore, the present study was aimed to appraise the polarity directed antioxidant, cytotoxic, protein kinase inhibitory, antileishmanial and glucose modulatory attributes of a Himalayan medicinal plant- Quercus dilatata. METHODS: Total phenolic and flavonoid contents were determined colorimetrically and various polyphenols were identified by RP-HPLC analysis...
August 3, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28770224/thiocarbamates-from-moringa-oleifera-seeds-bioactive-against-virulent-and-multidrug-resistant-vibrio-species
#13
Renata Albuquerque Costa, Oscarina Viana de Sousa, Ernesto Hofer, Jair Mafezoli, Francisco Geraldo Barbosa, Regine Helena Silva Dos Fernandes Vieira
Prospect of antibacterial agents may provide an alternative therapy for diseases caused by multidrug-resistant bacteria. This study aimed to evaluate the in vitro bioactivity of Moringa oleifera seed extracts against 100 vibrios isolated from the marine shrimp Litopenaeus vannamei. Ethanol extracts at low (MOS-E) and hot (MOS-ES) temperature are shown to be bioactive against 92% and 90% of the strains, respectively. The most efficient Minimum Inhibitory Concentration (MIC) levels of MOS-E and MOS-ES against a high percentage of strains were 32 µg mL(-1)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28769916/bacterial-community-associated-with-healthy-and-diseased-pacific-white-shrimp-litopenaeus-vannamei-larvae-and-rearing-water-across-different-growth-stages
#14
Yanfen Zheng, Min Yu, Jiwen Liu, Yanlu Qiao, Long Wang, Zhitao Li, Xiao-Hua Zhang, Mingchao Yu
Bacterial communities are called another "organ" for aquatic animals and their important influence on the health of host has drawn increasing attention. Thus, it is important to study the relationships between aquatic animals and bacterial communities. Here, bacterial communities associated with Litopenaeus vannamei larvae at different healthy statuses (diseased and healthy) and growth stages (i.e., zoea, mysis, and early postlarvae periods) were examined using 454-pyrosequencing of the 16S rRNA gene. Bacterial communities with significant difference were observed between healthy and diseased rearing water, and several bacterial groups, such as genera Nautella and Kordiimonas could also distinguish healthy and diseased shrimp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28769664/new-records-and-description-of-two-new-species-of-carideans-shrimps-from-bah%C3%A3-a-santa-mar%C3%A3-a-la-reforma-lagoon-gulf-of-california-mexico-crustacea-caridea-alpheidae-and-processidae
#15
José Salgado-Barragán, Manuel Ayón-Parente, Pilar Zamora-Tavares
Two new species of the family Alpheidae: Alpheus margaritaesp. n. and Leptalpheus melendezensissp. n. are described from Santa María-La Reforma, coastal lagoon, SE Gulf of California. Alpheus margaritaesp. n. is closely related to A. antepaenultimus and A. mazatlanicus from the Eastern Pacific and to A. chacei from the Western Atlantic, but can be differentiated from these by a combination of characters, especially the morphology of the scaphocerite and the first pereopods. Leptalpheus melendezensissp. n. resembles L...
2017: ZooKeys
https://www.readbyqxmd.com/read/28765773/astaxanthin-induces-migration-in-human-skin-keratinocytes-via-rac1-activation-and-rhoa-inhibition
#16
Dakanda Ritto, Supita Tanasawet, Sawana Singkhorn, Wanwimol Klaypradit, Pilaiwanwadee Hutamekalin, Varomyalin Tipmanee, Wanida Sukketsiri
BACKGROUND/OBJECTIVES: Re-epithelialization has an important role in skin wound healing. Astaxanthin (ASX), a carotenoid found in crustaceans including shrimp, crab, and salmon, has been widely used for skin protection. Therefore, we investigated the effects of ASX on proliferation and migration of human skin keratinocyte cells and explored the mechanism associated with that migration. MATERIAL/METHOD: HaCaT keratinocyte cells were exposed to 0.25-1 µg/mL of ASX...
August 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28764991/transcriptional-translational-and-systemic-alterations-during-the-time-course-of-osmoregulatory-acclimation-in-two-palaemonid-shrimps-from-distinct-osmotic-niches
#17
Rogério Oliveira Faleiros, Rosa P M Furriel, John Campbell McNamara
Palaemonid shrimps exhibit numerous adaptive strategies, both in their life cycles and in biochemical, physiological, morphological and behavioral characteristics that reflect the wide variety of habitats in which they occur, including species that are of particular interest when analyzing adaptive osmoregulatory strategies. The present investigation evaluates the short- (hours) and long-term (days) time courses of responses of two palaemonid shrimps from separate yet overlapping osmotic niches, Palaemon northropi (marine) and Macrobrachium acanthurus (diadromous, fresh water), to differential salinity challenges at distinct levels of structural organization: (i) transcriptional, analyzing quantitative expression of gill mRNAs that encode for subunits of the Na(+)/K(+)-ATPase and V(H(+))-ATPase ion transporters; (ii) translational, examining the kinetic behavior of gill Na(+)/K(+)-ATPase specific activity; and (iii) systemic, accompanying consequent adjustment of hemolymph osmolality...
July 29, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28763972/next-generation-nutraceutical-from-shrimp-waste-the-convergence-of-applications-with-extraction-methods
#18
REVIEW
Kandra Prameela, Kuncham Venkatesh, Sarat Babu Immandi, Ashok Phani Kiran Kasturi, Ch Rama Krishna, Ch Murali Mohan
In recent years considerable progress in health therapy makes a significant improvement in natural nutraceuticals. Shrimp is a valuable natural sea food and is processed by removing head, tail and carapace as waste. The large amounts of waste produced by sea food industries capitulate, recoverable nutraceutical compound astaxanthin. This review emphasizes the chemistry and role of astaxanthin in pigmentation. The study highlights progress in applications and describes the current extraction methods starting with chemical to the best eco-friendly microbial processes...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28757045/efficacy-of-potential-phage-cocktails-against-vibrio-harveyi-and-closely-related-vibrio-species-isolated-from-shrimp-aquaculture-environment-in-the-south-east-coast-of-india
#19
Nattan Stalin, Pappu Srinivasan
A diverse set of novel phages infecting the marine pathogenic Vibrio harveyi was isolated from shrimp aquaculture environments in the south east coast of India. Based on initial screening, three phages with a broad host range revealed that the growth inhibition of phage is relatively specific to V. harveyi. They were also able to infect V. alginolyticus and V. parahemolyticus that belonged to the Harveyi clade species from shrimp pond and sea coast environment samples. However, the impact of these phages on their host bacterium are well understood; a one-step growth curve experiment and transmission electron microscope (TEM) revealed three phages grouped under the Myoviridae (VHM1 and VHM2); Siphoviridae (VHS1) family...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28756196/inhibition-of-bacterial-biofilms-by-carboxymethyl-chitosan-combined-with-silver-zinc-and-copper-salts
#20
Randys Caldeira Gonçalves, Diego Pereira da Silva, Roberta Signini, Plínio Lázaro Faleiro Naves
Investigation of the antimicrobial action of carboxymethyl chitosan (CMCh) is among the alternative approaches in the control of pathogenic microorganisms. This study aimed to screen the toxicity using the brine shrimp lethality assay and to investigate the inhibitory activity of carboxymethyl in isolation or in combination with silver nitrate, copper sulfate and zinc sulfate on biofilm formation by Staphylococcus aureus ATCC 6538, Staphylococcus epidermidis ATCC 12228, Kocuria rhizophila ATCC 9341, Pseudomonas aeruginosa ATCC 9027, Escherichia coli ATCC 25312, and Burkholderia cepacia ATCC 17759...
July 26, 2017: International Journal of Biological Macromolecules
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