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https://www.readbyqxmd.com/read/29351241/molecular-characterization-and-expression-profiles-of-sp-uchl3-and-sp-uchl5-during-gonad-development-of-scylla-paramamosain
#1
Kunhuang Han, Yanbin Dai, Ziping Zhang, Zhihua Zou, Yilei Wang
Ubiquitin C-terminal hydrolases (UCHLs) are a subset of deubiquitinating enzymes, and are involved in numerous physiological processes. However, the role of UCHLs during gonad development has not been studied in crustaceans. In this study, we have first cloned and analyzed expression profiling of Sp-uchl3 and Sp-uchl5 genes from mud crab Scylla paramamosain. The full-length cDNA of Sp-uchl3 is of 1804 bp. Its expression level in the ovary was significantly higher than in other tissues (p < 0.01), and during gonadal development, its expression in both O1 and O5 stages was significantly higher than in the other three stages of ovaries (p < 0...
January 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29351062/phylogeny-and-cocoon-production-in-the-parasitic-leech-myzobdella-lugubris-leidy-1851-hirudinidae-piscicolidae
#2
Naim Saglam, Ralph Saunders, Shirley A Lang, Daniel H Shain
Myzobdella lugubris is a commensal leech on crustaceans and a parasite to fishes, surviving predominantly in brackish waters throughout North America. Specimens in this study were collected within the tidal zone of the Delaware River basin (New Jersey and Pennsylvania). To compare regional M. lugubris specimens, defined characters were scored after dorsal and ventral dissections, and phylogenetic relationships were resolved using cytochrome c oxidase subunit 1 (CO1), 12S ribosomal RNA (rDNA) and 18S rDNA gene fragments...
March 26, 2018: Acta Parasitologica
https://www.readbyqxmd.com/read/29350453/late-cretaceous-marine-arthropods-relied-on-terrestrial-organic-matter-as-a-food-source-geochemical-evidence-from-the-coon-creek-lagerst%C3%A3-tte-in-the-mississippi-embayment
#3
M B Vrazo, A F Diefendorf, B E Crowley, A D Czaja
The Upper Cretaceous Coon Creek Lagerstätte of Tennessee, USA, is known for its extremely well-preserved mollusks and decapod crustaceans. However, the depositional environment of this unit, particularly its distance to the shoreline, has long been equivocal. To better constrain the coastal proximity of the Coon Creek Formation, we carried out a multiproxy geochemical analysis of fossil decapod (crab, mud shrimp) cuticle and associated sediment from the type section. Elemental analysis and Raman spectroscopy confirmed the presence of kerogenized carbon in the crabs and mud shrimp; carbon isotope (δ13 C) analysis of bulk decapod cuticle yielded similar mean δ13 C values for both taxa (-25...
January 19, 2018: Geobiology
https://www.readbyqxmd.com/read/29349877/engineered-and-laser-processed-chitosan-biopolymers-for-sustainable-and-biodegradable-triboelectric-power-generation
#4
Ruoxing Wang, Shengjie Gao, Zhen Yang, Yule Li, Weinong Chen, Benxin Wu, Wenzhuo Wu
Recent advances achieved in triboelectric nanogenerators (TENG) focus on boosting power generation and conversion efficiency. Nevertheless, obstacles concerning economical and biocompatible utilization of TENGs continue to prevail. Being an abundant natural biopolymer from marine crustacean shells, chitosan enables exciting opportunities for low-cost, biodegradable TENG applications in related fields. Here, the development of biodegradable and flexible TENGs based on chitosan is presented for the first time...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349109/data-collected-in-an-integrated-ecological-survey-of-rotifer-communities-and-corresponding-environmental-variables-in-the-highly-polluted-haihe-river-basin-china
#5
Wei Xiong, Jie Li, Yuzhan Yang, Weimin Wang, Baoqing Shan, Aibin Zhan
Here we presented two datasets (biological and environmental datasets) collected in a comprehensive large geographical scale (approximately 1.1×105 km2) survey of rivers/streams in the Haihe River Basin (HRB), which has become the most polluted river basin in past two decades in China. The survey selected a total of 94 representative sampling sites in the plain region of HRB, where environmental pollution is more severe than the mountain region. The biological dataset contains the information on the identified rotifer species and their abundance, while the environmental dataset provides the measured environmental variables at each sampling site...
April 2018: Data in Brief
https://www.readbyqxmd.com/read/29341872/a-cqferritin-protein-inhibits-white-spot-syndrome-virus-infection-via-regulating-iron-ions-in-red-claw-crayfish-cherax-quadricarinatus
#6
Xiao-Xiao Chen, Yan-Yao Li, Xue-Jiao Chang, Xiao-Lu Xie, Yu-Ting Liang, Ke-Jian Wang, Wen-Yun Zheng, Hai-Peng Liu
It is well known that iron is an essential element for all living organism. The intracellular iron availability is also important for the host's innate immune response to various pathogens, in which the iron homeostasis can be regulated by ferritin due to its iron storage property. In this study, a full-length cDNA sequence of ferritin (named as CqFerritin) was identified with 1410 bp from red claw crayfish Cherax quadricarinatus, which contained an open reading frame of 513 bp, encoding 170 amino acids with a conserved ferritin domain...
January 13, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29341364/food-dependent-exercise-induced-anaphylaxis-in-japanese-elementary-school-children
#7
Tetsuharu Manabe, Norihiro Oku, Yukoh Aihara
BACKGROUND: In 2012, we clarified that the prevalence of food-dependent exercise-induced anaphylaxis (FDEIA) was 0.018% among junior-high students in Yokohama, Japan. Furthermore, although different from FDEIA, one student who had completed oral immunotherapy developed anaphylaxis during exercise after eating causative food. However, there have been few large-scale epidemiological studies of FDEIA in elementary school children, so we conducted the epidemiological study among elementary school children in Yokohama to clarify the frequency and characteristic of FDEIA...
January 17, 2018: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29340233/crustacean-amphipods-from-marsh-ponds-a-nutritious-feed-resource-with-potential-for-application-in-integrated-multi-trophic-aquaculture
#8
Pablo Jiménez-Prada, Ismael Hachero-Cruzado, Inmaculada Giráldez, Catalina Fernández-Diaz, César Vilas, José Pedro Cañavate, José Manuel Guerra-García
Coastal protection, nutrient cycling, erosion control, water purification, and carbon sequestration are ecosystem services provided by salt marshes. Additionally, salt ponds offer coastal breeding and a nursery habitat for fishes and they provide abundant invertebrates, such as amphipods, which are potentially useful as a resource in aquaculture. Fishmeal and fish oil are necessary food resources to support aquaculture of carnivorous species due to their omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA)...
2018: PeerJ
https://www.readbyqxmd.com/read/29339143/gene-silencing-reveals-multiple-functions-of-na-k-atpase-in-the-salmon-louse-lepeophtheirus-salmonis
#9
Anna Z Komisarczuk, Heidi Kongshaug, Frank Nilsen
Na+/K+-ATPase has a key function in a variety of physiological processes including membrane excitability, osmoregulation, regulation of cell volume, and transport of nutrients. While knowledge about Na+/K+-ATPase function in osmoregulation in crustaceans is extensive, the role of this enzyme in other physiological and developmental processes is scarce. Here, we report characterization, transcriptional distribution and likely functions of the newly identified L. salmonis Na+/K+-ATPase (LsalNa+/K+-ATPase) α subunit in various developmental stages...
January 12, 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29339074/identification-and-characterization-of-a-doublesex-gene-which-regulates-the-expression-of-insulin-like-androgenic-gland-hormone-in-fenneropenaeus-chinensis
#10
Shihao Li, Fuhua Li, Kuijie Yu, Jianhai Xiang
The doublesex and its homologue genes are important regulators of sexual differentiation which are conserved among animal kingdom. In the present study, we reported a doublesex gene (designated as FcDsx) identified from the Chinese shrimp F. chinensis. The gene structure, nucleotide and deduced amino acid sequences of FcDsx were characterized. The results showed that the deduced amino acid sequence of FcDsx had the common features of Dsx proteins, including a doublesex/male abnormal 3 (DM) domain, an oligomerization domain and a predicted monopartite nuclear localization signal...
January 12, 2018: Gene
https://www.readbyqxmd.com/read/29337853/specific-molecular-signatures-for-type-ii-crustins-in-penaeid-shrimp-uncovered-by-the-identification-of-crustin-like-antimicrobial-peptides-in-litopenaeus-vannamei
#11
Cairé Barreto, Jaqueline da Rosa Coelho, Jianbo Yuan, Jianhai Xiang, Luciane Maria Perazzolo, Rafael Diego Rosa
Crustins form a large family of antimicrobial peptides (AMPs) in crustaceans composed of four sub-groups (Types I-IV). Type II crustins (Type IIa or "Crustins" and Type IIb or "Crustin-like") possess a typical hydrophobic N-terminal region and are by far the most representative sub-group found in penaeid shrimp. To gain insight into the molecular diversity of Type II crustins in penaeids, we identified and characterized a Type IIb crustin in Litopenaeus vannamei (Crustin-like Lv) and compared Type II crustins at both molecular and transcriptional levels...
January 16, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29337079/rising-pco2-in-freshwater-ecosystems-has-the-potential-to-negatively-affect-predator-induced-defenses-in-daphnia
#12
Linda C Weiss, Leonie Pötter, Annika Steiger, Sebastian Kruppert, Uwe Frost, Ralph Tollrian
Anthropogenically released CO2 accumulates in the global carbon cycle and is anticipated to imbalance global carbon fluxes [1]. For example, increased atmospheric CO2 induces a net air-to-sea flux where the oceans take up large amounts of atmospheric CO2 (i.e., ocean acidification [2-5]). Research on ocean acidification is ongoing, and studies have demonstrated the consequences for ecosystems and organismal biology with major impacts on marine food webs, nutrient cycles, overall productivity, and biodiversity [6-9]...
January 9, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29336825/detecting-the-occurrence-of-indigenous-and-non-indigenous-megafauna-through-fishermen-knowledge-a-complementary-tool-to-coastal-and-port-surveys
#13
E Azzurro, L Bolognini, B Dragičević, D Drakulović, J Dulčić, E Fanelli, F Grati, J Kolitari, L Lipej, E Magaletti, O Marković, S Matić-Skoko, B Mavrič, N Milone, A Joksimović, J Tomanić, A Scarpato, P Tutman, D Vrdoljak, F Zappacosta
Marine bioinvasions and other rapid biodiversity changes require today integrating existing monitoring tools with other complementary detection strategies to provide a more efficient management. Here we explored the efficacy of fishermen observations and traditional port surveys to effectively track the occurrence of both indigenous and non-indigenous megafauna in the Adriatic Sea. This consisted mainly of mobile taxa such as fishes, crustaceans and molluscs. Port surveys using traps and nets within 10 major Adriatic harbours, were compared with the information obtained from 153 interviews with local fishermen...
January 11, 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29336499/ecologically-driven-ultrastructural-and-hydrodynamic-designs-in-stomatopod-cuticles
#14
Lessa Kay Grunenfelder, Garrett Milliron, Steven Herrera, Isaias Gallana, Nicholas Yaraghi, Nigel Hughes, Kenneth Evans-Lutterodt, Pablo Zavattieri, David Kisailus
Ecological pressures and varied feeding behaviors in a multitude of organisms have necessitated the drive for adaptation. One such change is seen in the feeding appendages of stomatopods, a group of highly predatory marine crustaceans. Stomatopods include "spearers," who ambush and snare soft bodied prey, and "smashers," who bludgeon hard-shelled prey with a heavily mineralized club. The regional substructural complexity of the stomatopod dactyl club from the smashing predator Odontodactylus scyllarus represents a model system in the study of impact tolerant biominerals...
January 16, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29332202/non-amidated-and-amidated-members-of-the-c-type-allatostatin-ast-c-family-are-differentially-distributed-in-the-stomatogastric-nervous-system-of-the-american-lobster-homarus-americanus
#15
Andrew E Christie, Alexandra Miller, Rebecca Fernandez, Evyn S Dickinson, Audrey Jordan, Jessica Kohn, Mina C Youn, Patsy S Dickinson
The crustacean stomatogastric nervous system (STNS) is a well-known model for investigating neuropeptidergic control of rhythmic behavior. Among the peptides known to modulate the STNS are the C-type allatostatins (AST-Cs). In the lobster, Homarus americanus, three AST-Cs are known. Two of these, pQIRYHQCYFNPISCF (AST-C I) and GNGDGRLYWRCYFNAVSCF (AST-C III), have non-amidated C-termini, while the third, SYWKQCAFNAVSCFamide (AST-C II), is C-terminally amidated. Here, antibodies were generated against one of the non-amidated peptides (AST-C I) and against the amidated isoform (AST-C II)...
January 13, 2018: Invertebrate Neuroscience: IN
https://www.readbyqxmd.com/read/29331244/perception-of-faunal-circadian-rhythms-depends-on-sampling-technique
#16
Raül Triay-Portella, Aitor Escribano, José G Pajuelo, Fernando Tuya
Ecologists aim at disentangling how species vary in abundance through spatial and temporal scales, using a range of sampling techniques. Here, we investigated the circadian rhythm of seagrass-associated decapod crustaceans through three sampling techniques. Specifically, we compared the abundance, biomass and structure of seagrass-associated decapod assemblages between the day and night using a hand net, an airlift pump and baited traps. At night, the hand-net consistently collected a larger total abundance and biomass of decapods, what resulted in significant diel differences, which were detected for the total biomass, but not for the total abundance, when decapods were sampled through an airlift pump...
January 5, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29324292/use-of-sperm-dna-integrity-as-a-marker-for-exposure-to-contamination-in-palaemon-serratus-pennant-1777-intrinsic-variability-baseline-level-and-in-situ-deployment
#17
Alexandre Erraud, Marc Bonnard, Arnaud Chaumot, Olivier Geffard, Aurélie Duflot, Joëlle Forget-Leray, Frank Le Foll, Alain Geffard, Benoit Xuereb
In a previous study, the Comet assay was optimized for Palaemon serratus prawns in order to propose a biomarker for sperm quality in this species. However, better knowledge of its basal level and its natural variability, related to intrinsic biotic and environmental abiotic factors, is required before any relevant use of this biomarker in the field. To fulfill this goal, the present study proceeded in three steps: (i) the temporal variability of DNA integrity was followed monthly in a reference population over a 2-year period, (ii) the correlation between the main intrinsic biotic (i...
December 27, 2017: Water Research
https://www.readbyqxmd.com/read/29318535/specialized-pollination-by-fungus-gnats-in-the-introduced-population-of-aspidistra-elatior
#18
Kenji Suetsugu, Masahiro Sueyoshi
The monocot genus Aspidistra comprises rhizomatous perennials that are distributed in tropical to warm temperate regions of Asia. Little is known about the pollinators of almost all the species, probably due to the inconspicuous nature of Aspidistra flowers. Nevertheless, the unusual floral morphology suggests biotic pollination, since pollen grains are hidden under each flower's stigma. Aspidistra elatior has been suspected to have a very peculiar pollination ecology. So far, pollination by mollusks, crustaceans, or collembolans has been suspected...
January 10, 2018: Journal of Plant Research
https://www.readbyqxmd.com/read/29308271/anxiety-like-behaviour-increases-safety-from-fish-predation-in-an-amphipod-crustacea
#19
Marie-Jeanne Perrot-Minnot, Loan Banchetry, Frank Cézilly
Anxiety is an emotional state generally expressed as sustained apprehension of the environment and elevated vigilance. It has been widely reported in vertebrates and, more recently, in a few invertebrate species. However, its fitness value remains elusive. We investigated anxiety-like behaviour and its consequences in an amphipod crustacean, using electric shock as aversive stimuli, and pharmacological assays. An anxiety-like state induced by electric shocks in Gammarus fossarum was expressed through increased sheltering behaviour in the absence of predation risk, thereby showing the pervasive nature of such behavioural response...
December 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29307851/the-complete-mitochondrial-genome-of-huananpotamon-lichuanense-decapoda-brachyura-with-phylogenetic-implications-for-freshwater-crabs
#20
Jun Bai, Shuxin Xu, Zongheng Nie, Yifan Wang, Chunchao Zhu, Yan Wang, Weiping Min, Yixiong Cai, Jiexin Zou, Xianmin Zhou
In the present study, we determined the complete mitochondrial genome of Huananpotamon lichuanense (Decapoda: Brachyura) for the first time. The genome is 15,380bp in length and typically consists of 37 genes. When the gene order was compared to the ancestral crustacean type, two tRNA genes (tRNAHis and tRNAGln) were rearranged in H. lichuanense, and the translocation of tRNAGln appeared only in Potamoidea crabs, such as Geothelphusa dehaani and Sinopotamon xiushuiense, supporting the monophyly of the Potamoidea superfamily...
January 4, 2018: Gene
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