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Adult size and tinning of reproduction in five species of Asobara parasitoid wasps

Insect Science 2020年第6期27卷 1334-1345页

作者： Majeed Askari Seyahooei Ken Kraaijeveld Abdoolnabi Bagheri jacques j.mvan alphen Plant Protection Research Department Hormozgan Agricultural and Natural Resources Research and Education CenterAgricultural Research Education and Extension Organization(AREEO)Bandar AbbasIran Faculty of Earth and Life Sciences Institute of Ecological ScienceAnimal EcologyVrije University AmsterdamAmsterdamthe Netherlands Institute for Biodiversity and Ecosystem dynamics University of AmsterdamAmsterdamthe Netherlands

The majority o f adult parasitoid wasps are unable to synthesize lipids and therefore face a trade-off between the investment of lipids in eggs or in the maintenance of *** has been shown that resource allocation should depend on body size in *** that smaller females have shorter expected life times,they should concentrate their reproductive effort into early *** test this prediction,we investigated the relationship between body size and the timing of egg production in *** measured body size,lipid reserves,and reproductive investment(number of eggs,ovigeny index equivalent[OIE]and egg size)at eclosion in five species of Asobara(Hymenoptera:Braconidae)originating from different geographic and climatic *** results show significant interspecific variation in all these traits.A diagnostic test for phylogenetic independence revealed that closely related species did not resemble each other more closely than expected by chance for all traits *** reserves scaled positively with body size both between and within *** agreement with theory,01 correlated negatively with body size both between and within *** egg area at eclosion correlated negatively with lipid reserves both between and within *** indicates the existence of a trade-off between allocation of lipids to current reproduction and survival/future *** the exception of the most extreme pro-ovigenic species,*** im ilis,we found that proovigeny was compensated for by small egg *** results indicate the role of habitats in shaping interspecific variation in resource allocation strategies.

关键词： hymenopterous parasitoids lipid reserve ovigeny index equivalent reproduction strategy resource allocation

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Human-caused increases in reactive nitrogen burial in sediment of global lakes

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The Innovation 2021年第4期2卷 35-42页

作者： Mei Wang Benjamin Z.Houlton Sitong Wang Chenchen Ren Hans j.mvan Grinsven Deli Chen jianming Xu Baojing Gu School of Geographical Sciences South China Normal UniversityGuangzhou 510631China Department of Ecology and Evolutionary Biology and Department of Global Development Cornell UniversityIthacaNY 14850USA College of Environmental and Resource Sciences Zhejiang UniversityHangzhou 310058China Department of Land Management Zhejiang UniversityHangzhou 310058China PBL Netherlands Environmental Assessment Agency 2500 GH The Haguethe Netherlands School of Agriculture and Food The University of MelbourneParkvilleVIC 3010Australia Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Zhejiang UniversityHangzhou 310058China

Human activities have increased reactive nitrogen(Nr)input to terrestrial ecosystems compared with the pre-industrial ***,the fate of such Nr input remains uncertain,leading to missing sink of the global nitrogen *** synthesizing records of Nr burial in sediments from 303 lakes worldwide,here we show that 9.6±1.1 Tg N year^(-1)(Tg=10^(12) g)accumulated in inland water sediments from 2000 to 2010,accounting for 3%-5% of global Nr input to the land from combined natural and anthropogenic *** recent Nr burial flux doubles pre-industrial estimates,and Nr burial rate significantly increases with global increases in human population and air *** ratios of C:N decrease after 1950 while N:P ratios increase over time due to increasingly elevated Nr burial and other related processes in *** findings imply that Nr burial in lakes is overlooked as an important global sink of Nr input to terrestrial ecosystems.

关键词： biogeochemistry nitrogen accumulation sink eutrophication carbon

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No evidence for a genetic association between female mating preference and male secondary sexual trait in a Lake Victoria cichlid fish

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Current Zoology 2010年第1期56卷 57-64页

作者： Inke van der SLUIjS Ole SEEHAUSEN Tom j.M.Van DOOREN jacques j.M.van alphen Department of Animal Ecology Institute of Biology Leiden University Department of Biology McGill University Institute of Ecology and Evolution University of Bern Department of Fish Ecology & Evolution Centre of Ecology Eawag Swiss Federal Institute for Aquatic Science and TechnologyEvolution & Biogeochemistry

Sexual selection by female mating preference for male nuptial coloration has been suggested as a driving force in the rapid speciation of Lake Victoria cichlid fish. This process could have been facilitated or accelerated by genetic associations between female preference loci and male coloration loci. Preferences, as well as coloration, are heritable traits and are probably determined by more than one gene. However, little is known about potential genetic associations between these traits. In turbid water, we found a population that is variable in male nuptial coloration from blue to yellow to red. Males at the extreme ends of the phenotype distribution resemble a reproductively isolated species pair in clear water that has diverged into one species with blue-grey males and one species with bright red males. Females of the turbid water population vary in mating preference coinciding with the male phenotype distribution. For the current study, these females were mated to blue males. We measured the coloration of the sires and male offspring. Parents-offspring regression showed that the sires did not affect male offspring coloration, which confirms earlier findings that the blue species breeds true. In contrast, male offspring coloration was determined by the identity of the dams, which suggests that there is heritable variation in male color genes between females. However, we found that mating preferences of the dams were not correlated with male offspring coloration. Thus, there is no evidence for strong genetic linkage between mating preference and the preferred trait in this population [Current Zoology 56 （1）： 57-64 2010].

关键词： Speciation Sexual selection Mate choice Genetic association Cichlid fish Lake Victoria

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Sphingolipid metabolism and drug resistance in ovarian cancer

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Cancer Drug Resistance 2018年第3期1卷 181-197页

作者： Kelly M.Kreitzburg Robert C.A.mvan Waardenburg Karina j.Yoon Department of Pharmacology and Toxicology University of Alabama at BirminghamBirminghamAL 35294USA

Despite progress in understanding molecular aberrations that contribute to the development and progression of ovarian cancer,virtually all patients succumb to drug resistant disease at *** data implicate bioactive sphingolipids and regulation of sphingolipid metabolism as components of response to chemotherapy or development of *** in cytosolic ceramide induce apoptosis in response to therapy with multiple classes of chemotherapeutic *** in sphingolipid metabolism that accelerate the catabolism of ceramide or that prevent the production and accumulation of ceramide contribute to resistance to standard of care platinum-and taxane-based *** aim of this review is to highlight current literature and research investigating the influence of the sphingolipids and enzymes that comprise the sphingosine-1-phosphate pathway on the progression of ovarian *** focus of the review is on the utility of sphingolipid-centric therapeutics as a mechanism to circumvent drug resistance in this tumor type.

关键词： Ovarian cancer drug-resistance ceramide sphingosine-1-phosphate sphingolipid metabolism

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A test of genetic association among male nuptial coloration, female mating preference, and male aggression bias within a polymorphic population of cichlid fish

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Current Zoology 2013年第2期59卷 221-229页

作者： Inke van der SLUIjS Peter D. DIjKSTRA Charlotte M. LINDEYER BertanneVISSER Alan M. SMITH Ton G. G. GROOTHUIS jacques j. M. van alphen Ole SEEHAUSEN Department of Animal Ecology Institute of Biology Leiden University PO Box 9516 2300 RA Leiden The Netherlands The University of Texas at Austin Section of Integrative Biology 1 University Station-C0930 Austin TX 78712 United States Department of Biological Sciences University of Hull Cottingham Road Hull HU6 7RX United Kingdom Behavioural Biology Group University of Groningen P.O. Box 14 9750 AA Haren The Netherlands Institute of Zoology University of Bern Baltzerstrasse CH-3012 Bern Switzerland Eawag Swiss Federal Institute for Aquatic Science and Technology Centre of Ecology Evolution & Biogeochemistry Depart- ment ofFish Ecology & Evolution Seestrasse 97 6047 Kastanienbaum Switzerland

Both inter- and intrasexual selection have been implicated in the origin and maintenance of species-rich taxa with di- verse sexual traits. Simultaneous disruptive selection by female mate choice and male-male competition can, in theory, lead to ~,;peciation without geographical isolation if both act on the same male trait. Female mate choice can generate discontinuities in gene flow, while male-male competition can generate negative frequency-dependent selection stabilizing the male trait polymor- phism. Speciation may be facilitated when mating preference and/or aggression bias are physically linked to the trait they operate on. We tested for genetic associations among female mating preference, male aggression bias and male coloration in the Lake Victoria cichlid Pundamilia. We crossed females from a phenotypically variable population with males from both extreme ends of the phenotype distribution in the same population （blue or red）. Male offspring of a red sire were significantly redder than males of a blue sire, indicating that intra-population variation in male coloration is heritable. We tested mating preferences of female offspring and aggression biases of male offspring using binary choice tests. There was no evidence for associations at the family level between female mating preferences and coloration of sires, but dam identity had a significant effect on female mate prefe- rence. Sons of the red sire directed significantly more aggression to red than blue males, whereas sons of the blue sire did not show any bias. There was a positive correlation among individuals between male aggression bias and body coloration, possibly due to pleiotropy or physical linkage, which could facilitate the maintenance of color polymorphism [Current Zoology 59 （2）： 221-229, 2013].

关键词： Disruptive selection Sexual selection Speciation Pundamilia Linkage disequilibrium

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Skin bioprinting:the future of burn wound reconstruction?

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Burns & Trauma 2019年第1期7卷 25-36页

作者： Mathew Varkey Dafydd O.Visscher Paul P.mvan Zuijlen Anthony Atala james j.Yoo Wake Forest Institute for Regenerative Medicine Wake Forest School of MedicineMedical Center BoulevardWinston-SalemNC 27101USA Department of Plastic Reconstructive and Hand SurgeryAmsterdam University Medical Center1081HVAmsterdamThe Netherlands Amsterdam Movement Sciences AmsterdamThe Netherlands Burn Center Red Cross Hospital1942LEBeverwijkThe Netherlands Association of Dutch Burn Centres 1942LEBeverwijkThe Netherlands

Burns are a significant cause of trauma,and over the years,the focus of patient care has shifted from just survival to facilitation of improved functional ***,burn treatment,especially in the case of extensive burn injuries,involves surgical excision of injured skin and reconstruction of the burn injury with the aid of skin *** skin substitutes do not contain all skin cell types and do not facilitate recapitulation of native skin ***-dimensional(3D)bioprinting for reconstruction of burn injuries involves layer-by-layer deposition of cells along with scaffolding materials over the injured *** bioprinting can be done either in situ or in *** these approaches are similar except for the site of printing and tissue *** are technological and regulatory challenges that need to be overcome for clinical translation of bioprinted skin for burn ***,the use of bioprinting for skin reconstruction following burns is promising;bioprinting will enable accurate placement of cell types and precise and reproducible fabrication of constructs to replace the injured or damaged ***,3D bioprinting is a very transformative technology,and its use for wound reconstruction will lead to a paradigm shift in patient *** this review,we aim to introduce bioprinting,the different stages involved,in vitro and in vivo skin bioprinting,and the various clinical and regulatory challenges in adoption of this technology.

关键词： Bioprinting Skin Burns Reconstruction

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Sperm traits differ between winged and wingless males of the ant Cardiocondyla obscurior

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Integrative Zoology 2016年第6期11卷 427-432页

作者： Alexandra SCHREMPF Astrid MOSER jacques DELABIE jürgen HEINZE Zoology/Evolutionary Biology University of RegensburgRegensburgGermany Myrmecological Laboratory Cocoa Research Center CEPLACItabunaBrazil

Size and shape of sperm cells vary tremendously throughout the animal *** adaptive significance of this variation is not fully *** addition to sperm-female interactions and the environmental conditions,the risk of sperm competition might affect number,morphology and other“quality”traits of *** the male-diphenic ant Cardiocondyla obscurior,winged sneaker males have limited sperm number,because their testes degenerate shortly after adult emergence,as is typical for males of social *** contrast,wingless fighter males continuously replenish their sperm supply due to their exceptional lifelong spermatogene*** winged males usually have to compete with several other winged males for virgin queens,wingless males are able to monopolize queens by killing all other ***,this presents a unique system to investigate how alternative reproductive tactics and associated physiology affect sperm morphology and *** found that sperm-limited males invest into sperm number instead of sperm *** in sperm length is smaller in winged males,probably reflecting that they have to compete with several other ***,sperm viability is equally high in both male phenotypes.

关键词： alternative reproductive tactic social insect sperm length sperm viability

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How everything started:A retrospective

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Geoscience Frontiers 2014年第5期5卷 627-634页

作者： jacques Touret Institut de Mineralogie.de Physique des Materiaux.et de Cosmochimie IMPMC).Sorbonne Universites-UPMC Univ Paris 06 UMR CNRS 7590 Museum National d'Histoire Naturelle.IRD UMR 206.4 Place jussieu F-75005 Paris France

Recalling some of the most important events and persons during his education and career, the author sketches his growth from a young engineer, educated in the sanctuary of solid state reactions, to an involved fully devoted scientific career for the study of fluids in the deep Earth. Most important in this respect was the discovery of C02 inclusions in granulites, which triggered years of discussion on fluid- absent or fluid-assisted granulite metamorphism. To some extent, this debate is a continuation of the former granite controversy, but it shows also how the famous battle of ＂soaks against pontiffs＂ could have been easily avoided.

关键词： Granite controversyMetamorphic petrologyFluid inclusionsj TouretGranulites

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Demystifying polyphosphate-accumulating organisms relevant to wastewater treatment: A review of their phylogeny, metabolism, and detection

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Environmental Science and Ecotechnology 2024年第5期21卷 1-16页

作者： Lucia Ruiz-Haddad Muhammad Ali Mario Pronk Mark C.mvan Loosdrecht Pascal E.Saikaly Environmental Science and Engineering Program Biological and Environmental Science and Engineering(BESE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal23955-6900Saudi Arabia Water Desalination and Reuse Center Biological and Environmental Science and Engineering(BESE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal23955-6900Saudi Arabia Department of Civil Structural&Environmental EngineeringTrinity College DublinThe University of DublinDublin2Ireland Department of Biotechnology Delft University of TechnologyDelft2629 HZthe Netherlands

Currently,the most cost-effective and efficient method for phosphorus(P)removal from wastewater is enhanced biological P removal(EPBR)via polyphosphate-accumulating organisms(PAOs).This study integrates a literature review with genomic analysis to uncover the phylogenetic and metabolic diversity of the relevant PAOs for wastewater *** findings highlight significant differences in the metabolic capabilities of PAOs relevant to wastewater ***,Candidatus Dechloromonas and Candidatus Accumulibacter can synthesize polyhydroxyalkanoates,possess specific enzymes for ATP production from polyphosphate,and have electrochemical transporters for acetate and *** contrast,Tetrasphaera,Candidatus Phosphoribacter,Knoellia,and Phycicoccus possess PolyP-glucokinase and electrochemical transporters for sugars/amino ***,this review explores various detection methods for polyphosphate and PAOs in activated sludge wastewater treatment ***,FISH-Raman spectroscopy emerges as one of the most advanced detection ***,this review provides critical insights into PAO research,underscoring the need for enhanced strategies in biological phosphorus removal.

关键词： Polyphosphate-accumulating organisms(PAOs) Enhanced biological phosphorus removal (EBPR)Tetrasphaera Ca.accumulibacter Ca.phosphoribacter Knoellia Phycicoccus

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A unified plasticity methodology for rate-and temperature-sensitive alloys exhibiting a non-linear kinematic hardening behavior

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Acta Mechanica Solida Sinica 2017年第1期30卷 27-37页

作者： jacques Luk-Cyr Daniel Paquet jacques Lanteigne Henri Champliaud Aurelian Vadean Department of Mechanical Engineering Ecole Polyechnique de Montreal 2900 Blvd Edouard-Montpetit MontrealQC H3T 1J4 Institut de recherche d'Hydro-Quebec 1800 Blvd Lionel-Boulet Varennes QC J3X 1S1 Department of Mechanical Engineering Ecole de technologie superieure 1100 Rue Notre-Dame O Montreal QCH3C 1K3

In this paper, a novel unified plasticity methodology is proposed to allow the coupling of rate-and temperature-sensitivity of engineering alloys as well as the non-linear kinematic hardening behavior often observed during cyclic loading. The proposed methodology is general in the sense that an arbitrary constitutive model may be chosen for the viscoplastic part, as well as the cyclic part. We adapt our model with a physically-motivated viscoplasticity flow rule and a nonlinear kinematic hardening model. In contrast with other unified plasticity models, the simplified theory involves few material parameters that can be readily calibrated from standard mechanical tests. The capabilities of the proposed theory are demonstrated for a hot rolled annealed 304 L stainless steel supplied by Vimetal Peckover. The model is tested with stress–strain curves obtained from standard tensile and cyclic uniaxial tests at various strain amplitudes and strain-rates, and good accuracy of the response is obtained for strains up to 15%, within a temperature range of 293–673 K. We note that the cyclic plasticity model in our adapted theory can be readily enhanced with ratchetting, mean stress relaxation, strain amplitude history, Masing effects or other complex capabilities.

关键词： Unified plasticity Constitutive behavior Viscoplasticity Non-linear kinematic hardening Stainless steels

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