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https://www.readbyqxmd.com/read/29782816/a-new-microsporidium-apotaspora-heleios-n-g-n-sp-from-the-riverine-grass-shrimp-palaemonetes-paludosus-decapoda-caridea-palaemonidae
#1
Yuliya Y Sokolova, Robin M Overstreet
We report a new microsporidium from a key species of the estuarine communities of the Gulf States, the Riverine grass shrimp, Palaemonetes paludosus. A milky-white shrimp was found in the Mobile Bay Delta, a large, oligohaline-freshwater wetland in Alabama, USA. Light microscopy of smears and thick sections of the abdominal tissues demonstrated infection with microsporidian spores enclosed in sporophorous vesicles (SVs) in sets of eight. Broadly oval spores measured 2.9 ± 0.06 x 1.7 ± 0.03 µm (2.5-3.3 x 1...
May 18, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29778989/involvement-of-serotonin-in-crayfish-hematopoiesis
#2
Chadanat Noonin
Serotonin (5-HT) is a conserved monoamine neurotransmitter that has several physiological functions both in vertebrates and invertebrates. In addition to its well-known function in the central nervous system, 5-HT also participates in peripheral system. However, in crustaceans, the knowledge about peripheral functions of 5-HT is limited. In this study, a role of 5-HT in hematopoiesis in crayfish, Pacifastacus leniusculus, was investigated. The presence of 5-HT in crayfish plasma and the effect of 5-HT injection on hemocyte number were examined...
May 4, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29778903/orcokinins-regulate-the-expression-of-neuropeptide-precursor-genes-related-to-ecdysis-in-the-hemimetabolous-insect-rhodnius-prolixus
#3
Juan Pedro Wulff, Natalia Capriotti, Sheila Ons
Ecdysis is a vital process for insects, during which they shed the old cuticle in order to emerge as the following developmental stage. Given its relevance for survival and reproduction, ecdysis is tightly regulated by peptidic hormones that conform an interrelated neuromodulatory network. This network was studied in species that undergo a complete metamorphosis, but not in hemimetabola. In a recent work, we demonstrated that orcokinin neuropeptides are essential for ecdysis to occur in the kissing bug Rhodnius prolixus...
May 17, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29775751/expression-pattern-and-functional-analysis-of-the-two-ring-box-protein-rbx-in-spermatogenesis-of-chinese-mitten-crab-eriocheir-sinensis
#4
Jia-Shun Zhang, Xue-Jie Li, Lei Yang, Wei-Wei Li, Qun Wang
Studies in E. sinensis have shown that ubiquitination mediated by Cullin-RING E3 ligases (CRLs) plays important roles in spermatogenesis. In other species, CRLs are also essential in cell cycle progression, DNA replication, signal transduction, gene transcription, and development. The catalytic RING component, the RING box protein, is an important part of CRLs. However, there have been few studies on CRLs in crustaceans. In this study, we cloned two RING box protein genes from the Chinese mitten crab, Eriocheir sinensis, termed Es-RBX1 and Es-RBX2 The full length Es-RBX1 cDNA comprises 741 nucleotides, and encodes a protein of 124 amino acid residues, whereas the Es-RBX2 cDNA comprises 1325 nucleotides, and encodes a protein of 110 amino acid residues...
May 15, 2018: Gene
https://www.readbyqxmd.com/read/29774286/biological-control-of-anopheles-darlingi-aedes-aegypti-and-culex-quinquefasciatus-larvae-using-shrimps
#5
Willian Marinho Dourado Coelho, Juliana de Carvalho Apolinário Coêlho, Katia Denise Saraiva Bresciani, Wilma Aparecida Starke Buzetti
Mosquitoes can act as vectors of important diseases such as malaria, dengue, Zika virus, yellow fever, Chikungunya and Mayaro fever, in addition to filariasis. The use of insecticides, larvicides, bed nets and repellents, besides the use of drugs as chemoprevention and the treatment of the sick are currently the pillars of the control of these vectors. We studied the biological control against of Anopheles darlingi , Aedes aegypti and Culex quinquefasciatus larvae using shrimps of the species M. pantanalense , M...
August 2017: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29767342/characterization-of-xanthine-dehydrogenase-and-aldehyde-oxidase-of-marsupenaeus-japonicus-and-their-response-to-microbial-pathogen
#6
Yo Okamura, Mari Inada, Gehad Elsaid Elshopakey, Toshiaki Itami
Reactive oxygen species (ROS) play key roles in many physiological processes. In particular, the sterilization mechanism of bacteria using ROS in macrophages is a very important function for biological defense. Xanthine dehydrogenase (XDH) and aldehyde oxidase (AOX), members of the molybdo-flavoenzyme subfamily, are known to generate ROS. Although these enzymes occur in many vertebrates, some insects, and plants, little research has been conducted on XDHs and AOXs in crustaceans. Here, we cloned the entire cDNA sequences of XDH (MjXDH: 4328 bp) and AOX (MjAOX: 4425 bp) from Marsupenaeus japonicus (kuruma shrimp) using reverse transcriptase-polymerase chain reaction (RT-PCR) and random amplification of cDNA ends (RACE)...
May 16, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29766767/neural-architecture-from-cells-to-circuits
#7
Sarah E V Richards, Stephen D Van Hooser
Circuit operations are determined jointly by the properties of the circuit elements and the properties of the connections among these elements. In the nervous system, neurons exhibit diverse morphologies and branching patterns, allowing rich compartmentalization within individual cells, and complex synaptic interactions among groups of cells. Here, we summarize work detailing how neuronal morphology impacts neural circuit function. In particular, we consider example neurons in the retina, cerebral cortex, and the stomatogastric ganglion of crustaceans...
May 16, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29758510/assessing-the-chronic-toxicity-of-nickel-to-a-tropical-marine-gastropod-and-two-crustaceans
#8
Francesca Gissi, Jenny L Stauber, Monique T Binet, Melanie A Trenfield, Joost W Van Dam, Dianne F Jolley
The mining and processing of nickel ores from tropical regions contributes 40% of the global supply. The potential impact of these activities on tropical marine ecosystems is poorly understood. Due to the lack of ecotoxicity data for tropical marine species, there is currently no available water quality guideline value for nickel that is specific to tropical species. In this study, we investigated the toxicity of nickel to three tropical marine invertebrates, the gastropod Nassarius dorsatus, the barnacle Amphibalanus amphitrite, and the copepod Acartia sinjiensis...
May 11, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29758509/potential-health-risks-via-consumption-of-six-edible-shellfish-species-collected-from-piura-peru
#9
I Loaiza, M De Troch, G De Boeck
Scallops and their potential predators were collected in Sechura Bay and in front of the Illescas Reserved Zone (north Peru), during El Niño-Southern Oscillation (ENSO) 2016, and analyzed for the metals chromium (Cr), manganese (Mn), iron (Fe), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd) and lead (Pb). This study showed that ~20% of the molluscs exceeded the maximum residual levels (MRLs) for human consumption in inorganic As, while ~30% of the crustaceans did. For Cd, around 10% and 40% of the molluscs and the crustaceans were above the MRLs, respectively...
May 11, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29758296/isolation-of-the-sex-determining-gene-sex-lethal-sxl-in-penaeus-litopenaeus-vannamei-boone-1931-and-characterization-of-its-embryogenic-gametogenic-and-tissue-specific-expression
#10
Itzia López-Cuadros, Alejandra García-Gasca, Gracia Gomez-Anduro, Cristina Escobedo-Fregoso, Raúl A Llera-Herrera, Ana M Ibarra
The Pacific white shrimp Penaeus vannamei is the most cultured shrimp species around the world. Because females grow larger than males, the culture of 'only females' is of great interest, but knowledge on sex determination and differentiation is required for producing only females. In an effort to obtain information associated with reproduction in P. vannamei, transcriptomic data from female gonads was generated, and partial sequences of a transcript were identified as Sex-lethal (Sxl). Its characterization indicated that, differently from other penaeids in which this gene has been isolated, there are six isoforms of the Sxl transcript in P...
May 11, 2018: Gene
https://www.readbyqxmd.com/read/29758190/conserved-characteristics-of-ocular-refractive-development-did-the-eye-evolve-once
#11
REVIEW
Jacob G Sivak, Jeremy M Sivak
It has been speculated that the unitary eyes of vertebrates and molluscs, and the compound eyes of insects and crustaceans, evolved separately. On the other hand, the common use of rhodopsin as a photoreceptor molecule, and the conservation of Pax6 as a master control gene for eye development, suggest instead that the eye evolved once. Yet, recently the molecular genetics that had seemed to suggest a definitive answer to this evolutionary point has once again become cloudy. Here we propose an alternative approach to addressing the question of eye evolution through comparative analyses of physiological optics...
May 11, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29756679/effect-of-heat-processing-on-ige-reactivity-and-cross-reactivity-of-tropomyosin-and-other-allergens-of-asia-pacific-mollusc-species-identification-of-novel-sydney-rock-oyster-tropomyosin-sac-g-1
#12
Jennifer M Rolland, Nirupama P Varese, Jodie B Abramovitch, Jessica Anania, Roni Nugraha, Sandip Kamath, Anita Hazard, Andreas L Lopata, Robyn E O'Hehir
SCOPE: Shellfish allergy is an increasing global health priority, frequently affecting adults. Molluscs are an important shellfish group causing food allergy but knowledge of their allergens and cross-reactivity is limited. Optimal diagnosis of mollusc allergy enabling accurate advice on food avoidance is difficult. We characterized allergens of four frequently ingested Asia-Pacific molluscs: Sydney Rock Oyster (Saccostrea glomerata), Blue Mussel (Mytilus edulis), Saucer Scallop (Amusium balloti) and Southern Calamari (Sepioteuthis australis), examining cross-reactivity between species and with Blue Swimmer Crab tropomyosin, Por p 1...
May 14, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29753689/molecular-characterization-and-gene-expression-analysis-of-hypoxia-inducible-factor-and-its-inhibitory-factors-in-kuruma-shrimp-marsupenaeus-japonicus
#13
Yo Okamura, Tohru Mekata, Gehad Elsaid Elshopakey, Toshiaki Itami
In shrimp aquaculture, overcrowded farming causes fluctuations in dissolved oxygen concentrations. Low-oxygen conditions (hypoxia) affect shrimp growth. Hypoxia-inducible factor (HIF) is a transcriptional factor in the basic helix-loop-helix/PAS family and is activated in response to hypoxic stress. However, little is known about HIF and other inhibitors of the HIF pathway in crustaceans. In this study, we cloned MjHIF-1α, an inhibitory factor, MjFIH-1 (factor inhibiting HIF-1α), and MjVHL (Von Hippel-Lindau tumor suppressor) from kuruma shrimp (Marsupenaeus japonicus)...
May 10, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29753289/native-crustacean-species-as-a-bioindicator-of-freshwater-ecosystem-pollution-a-multivariate-and-integrative-study-of-multi-biomarker-response-in-active-river-monitoring
#14
Lidwina Bertrand, Magdalena Victoria Monferrán, Catherine Mouneyrac, María Valeria Amé
The aim of this study was to evaluate the ability of Palaemonetes argentinus to evidence the environmental degradation due to pollutants mixture in a freshwater aquatic ecosystem. For this purpose, an active monitoring (96 h exposure) was carried out in seven sites along the Ctalamochita River basin (Córdoba, Argentina), as a case of study. Our results evidenced sewage discharges impact in the water quality index, as well as metal pollution in water (Ag, Al, B, Pb, Hg) and sediments (Hg) with a potential effect on aquatic biota...
May 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29750969/tissue-distribution-and-biochemical-characteristics-of-receptors-for-sinus-gland-peptide-vii-as-a-crustacean-hyperglycemic-hormone-and-vitellogenesis-inhibiting-hormone-of-the-kuruma-prawn-marsupenaeus-japonicus
#15
Chiaki Nagai-Okatani, Shinji Nagata, Hiromichi Nagasawa
Crustacean hyperglycemic hormone (CHH) and vitellogenesis-inhibiting hormone (VIH) belong to the CHH family, a neuropeptide superfamily conserved in ecdysozoans. To date, no receptor for the CHH family peptides has been identified in crustaceans. Here, we used a CHH family isoform, Mj-sinus gland peptide (SGP) -VII, as a representative of CHH and VIH in order to determine its target tissues and obtain biochemical information regarding its receptor in the kuruma prawn Marsupenaeus japonicus (Crustacea, Decapoda)...
May 8, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29747590/first-comprehensive-analysis-of-lysine-acetylation-in-alvinocaris-longirostris-from-the-deep-sea-hydrothermal-vents
#16
Min Hui, Jiao Cheng, Zhongli Sha
BACKGROUND: Deep-sea hydrothermal vents are unique chemoautotrophic ecosystems with harsh conditions. Alvinocaris longirostris is one of the dominant crustacean species inhabiting in these extreme environments. It is significant to clarify mechanisms in their adaptation to the vents. Lysine acetylation has been known to play critical roles in the regulation of many cellular processes. However, its function in A. longirostris and even marine invertebrates remains elusive. Our study is the first, to our knowledge, to comprehensively investigate lysine acetylome in A...
May 10, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29747150/concentration-of-heavy-metals-in-seafood-fishes-shrimp-lobster-and-crabs-and-human-health-assessment-in-saint-martin-island-bangladesh
#17
REVIEW
Mohammad Abdul Baki, Md Muzammel Hossain, Jhuma Akter, Shamshad B Quraishi, Md Fajlul Haque Shojib, A K M Atique Ullah, Md Firoz Khan
A contaminated aquatic environment may end up in the food chain and pose risks to tourist health in a tourist destination. To assess the health risk for tourists that visit St. Martine Island, which is a popular domestic and foreign tourist destination in Bangladesh, a study is undertaken to analyse the level of heavy metal contamination from chromium (Cr), manganese (Mn), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), lead (Pb), mercury (Hg) and iron (Fe) in six of the most consumed fish (L. fasciatus, R...
May 7, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29743490/transcriptomic-analysis-of-crustacean-molting-gland-y-organ-regulation-via-the-mtor-signaling-pathway
#18
S Shyamal, S Das, A Guruacharya, D L Mykles, D S Durica
The intermolt crustacean Y-organ (YO) maintains a basal state mediated by pulsatile release of molt inhibiting hormone (MIH), a neuropeptide produced in the eyestalk ganglia, inhibiting YO ecdysteroidogenesis. Reduction of MIH results in YO activation and the animal enters premolt. In the crab, Gecarcinus lateralis, molting was induced by eyestalk ablation (ESA). ESA animals were injected with either rapamycin, an mTOR inhibitor, or DMSO vehicle at Day 0. YOs were harvested at 1, 3, and 7 days post-ESA and processed for high throughput RNA sequencing...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29742099/the-amp-project-comparing-species-on-the-basis-of-dynamic-energy-budget-parameters
#19
Gonçalo M Marques, Starrlight Augustine, Konstadia Lika, Laure Pecquerie, Tiago Domingos, Sebastiaan A L M Kooijman
We developed new methods for parameter estimation-in-context and, with the help of 125 authors, built the AmP (Add-my-Pet) database of Dynamic Energy Budget (DEB) models, parameters and referenced underlying data for animals, where each species constitutes one database entry. The combination of DEB parameters covers all aspects of energetics throughout the full organism's life cycle, from the start of embryo development to death by aging. The species-specific parameter values capture biodiversity and can now, for the first time, be compared between animals species...
May 9, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29741067/-application-of-stable-isotopes-%C3%AE-13-c-and-%C3%AE-15-n-in-studies-on-heavy-metals-bioaccumulation-in-daya-bay-food-web
#20
Sen Du, Yan Yan Zhou, Li Zhang
The Daya Bay is a typical subtropical bay in Southern China, and chronically stressed by heavy metal pollution. The bioaccumulation of heavy metals in Daya Bay ecosystem is still unclear. In this study, heavy metals (Cr, Co, Ni, Cu, Zn, Ag, Cd, Pb) and stable isotopes (δ13 C and δ15 N) were analyzed in seawater, sediment, and organisms (planktons, benthos and nektons) sampled from Daya Bay in June and December of 2015, in order to illuminate the influences of heavy metals to Daya Bay ecosystem and the basic information of environmental monitoring and risk assessment...
July 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
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