检索结果-南通市图书馆

Amino acid and mineral digestibility,bone ash,and plasma inositol is increased by including microbial phytase in diets for growing pigs

引用

Journal of Animal Science and Biotechnology 2024年第2期15卷 699-712页

作者： Liz vanessa Lagos Mike Richard Bedford Hans Henrik Stein Division of Nutritional Sciences University of IllinoisUrbanaIL 61801USA AB Vista Marlborough SN84ANUK

Background The effect of microbial phytase on amino acid and energy digestibility is not consistent in pigs,which may be related to the phytase dosage or the adaptation length to the diet.Therefore,an experiment was conducted to test the hypotheses that increasing dietary phytase after an 18-day adaptation period:1)increases nutrient and energy digestibility;2)increases plasma p,plasma inositol,and bone ash of young pigs;and 3)demonstrates that maximum phytate degradation requires more phytase than maximum p digestibility.Results Data indicated that increasing inclusion of phytase[0,250,500,1,000,2,000,and 4,000 phytase units(FTU)/kg feed]in corn-soybean meal-based diets increased apparent ileal digestibility(AID)of Trp(quadratic;pppphytase also increased AID and apparent total tract digestibility(ATTD)of Ca and p(quadratic;ppphytase did not influence the ATTD of Mg or gross energy.Concentrations of plasma p and bone ash increased(quadratic;pplasma inositol also increased(linear;pphytase.Reduced concentrations of inositol phosphate(Ip)6 and Ip5(quadratic;pp4 and Ip3(linear;ppphytase increased.The ATTD of p was maximized if at least 1,200 FTU/kg were used,whereas more than 4,000 FTU/kg were needed to maximize inositol release.Conclusions Increasing dietary levels of phytase after an 18-day adaptation period increased phytate and Ip ester degradation and inositol release in the small intestine.Consequently,increasing dietary phytase resulted in improved digestibility of Ca,p,K,Na,and the first 4 limiting amino acids,and in increased concentrations of bone ash and plasma p and inositol.In a corn-soybean meal diet,maximum inositol release requires approximately 3,200 FTU/kg more phytase than that re

关键词： Bone ash Inositol Nutrient digestibility phytase phytate degradation pigs

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Floristic composition and edaphic relationships in ferruginous campo rupestre reference ecosystems

引用

Journal of Mountain Science 2024年第3期21卷 719-733页

作者： G.Wilson FERNANDES Letícia RAMOS Dario C.pAIVA Jéssica CUNHA-BLUM vanessa Matos GOMES Daniel NEGREIROS Ecologia Evolutiva&Biodiversidade Departamento de GenéticaEcologia e Evolução/ICBUniversidade Federal de Minas Gerais31270-901Belo HorizonteMGBrazil Knowledge Center for Biodiversity 31270-901Belo HorizonteMGBrazil Department of Biological Sciences Institute of EnvironmentFlorida International UniversityMiamiFL 33199USA programa de pós Graduação em Biodiversidade e Uso dos Recursos Naturais Universidade Estadual de Montes ClarosMontes ClarosMGBrazil Laboratório de Estudo das Relações Solo-planta Departamento de SolosUniversidade Federal Rural do Rio de JaneiroSeropédicaRGBrazil

Land use change and occupation have led to modifications in the environment causing loss of biodiversity and ecosystem services throughout the planet.Some environments with high economic relevance,such as the ferruginous campo rupestre(rupestrian grassland known as Canga in Brazil),are even more susceptible to severe impacts due to their extreme habitat conditions and low resilience.The determination of reference ecosystems based on the intrinsic characteristics of the ecosystem is essential for conservation as well as to the implementation of ecological restoration.We proposed the reference ecosystem of the three main types of habitats of the ferruginous campo rupestre based on their floristic composition.We described the floristic composition of each habitat and evaluated the physicochemical properties of the soils and the relationship between plants and soils.All three habitats showed high diversity of plant species and many endemic species,such as Chamaecrista choriophylla,Cuphea pseudovaccinium,Lychnophora pinaster,and Vellozia subalata.The distribution of vegetation was strongly related with the edaphic characteristics,with a set of species more adapted to high concentration of base saturation,fine sand,organic carbon,and iron,while another set of species succeeded in more acidic soils with higher S and silt concentration.We provide support for the contention that the ferruginous campo rupestre is a mosaic of different habitats shaped by intrinsic local conditions.Failure to recognize the floristic composition of each particular habitat can lead to inappropriate restoration,increased habitat homogenization and increased loss of biodiversity and ecosystem services.This study also advances the knowledge base for building the reference ecosystem for the different types of ferruginous campo rupestre habitats,as well as a key database for highlighting those species contribute most to community assembly in this diverse and threatened tropical mountain ecosystem.

关键词： Canga Ecological restoration Extreme ecosystem Non-forest ecosystems Rupestrian grassland Taxon environment relationships

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Impact of pre- and peri-operative risk factors on length of stay and hospital readmission following minimally-invasive partial nephrectomy

引用

Asian Journal of Urology 2024年第1期11卷 72-79页

作者： vanessa A.Lukas Rahul Dutta Ashok K.Hemal Matvey Tsivian Timothy E.Craven Nicholas A.Deebel David D.Thiel Ram Anil pathak Brigham and Women's Hospital Division of UrologyDepartment of Surgery75 Francis StreetBostonMAUSA Atrium Health Wake Forest Baptist Medical Center Department of Urology1 Medical Center BlvdWinston-SalemNCUSA Mayo Clinic Florida Department of Urology4500 San Pablo RoadJacksonvilleFLUSA

Objective:We conducted an analysis of the American College of Surgeons National Surgical Quality Improvement program database for minimally-invasive partial nephrectomy cases reported with the goal to identify pre-and peri-operative variables associated with length of stay(LOS)greater than 3 days and readmission within 30 days.Methods:Records from 2008 to 2018 for“laparoscopy,surgical;partial nephrectomy”for prolonged LOS and readmission cohorts were compiled.Univariate analysis with Chi-square,t-tests,and multivariable logistic regression analysis with odds ratios(ORs),p-values,and 95%confidence intervals assessed statistical associations.Results:Totally,20306 records for LOS greater than 3 days and 15854 for readmission within 30 days were available.Univariate and multivariable analysis exhibited similar results.For LOS greater than 3 days,undergoing non-elective surgery(OR=5.247),transfusion of greater than four units within 72 h prior to surgery(OR=5.072),pre-operative renal failure or dialysis(OR=2.941),and poor pre-operative functional status(OR=2.540)exhibited the strongest statistically significant associations.For hospital readmission within 30 days,loss in body weight greater than 10%in 6 months prior to surgery(OR=2.227)and bleeding disorders(OR=2.081)exhibited strongest statistically significant associations.Conclusion:Multiple pre-and peri-operative risk factors are independently associated with prolonged LOS and hospital readmission within 30 days of surgery using the American College of Surgeons National Surgical Quality Improvement program data.Recognizing the risks factors that can potentially be improved prior to minimally-invasive partial nephrectomy is crucial to informing patient selection,optimization strategies,and patient education.

关键词： Minimally-invasive partial nephrectomy The American College of Surgeons National Surgical Quality Improvement program Lengthof stay Hospital readmission

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Artemisia vulgaris Induces Tumor-Selective Ferroptosis and Necroptosis via Lysosomal Ca^(2+) Signaling

引用

Chinese Journal of Integrative Medicine 2024年第6期30卷 525-533页

作者： Lucas dos Santos Zamarioli Michele Rosana Maia Santos Adolfo Garcia Erustes vanessa Marques Meccatti Thais Cristine pereira Soraya S Smaili Maria Cristina Marcucci Carlos Rocha Oliveira Gustavo JS pereira Claudia Bincoletto Department of pharmacology Paulista School of MedicineFederal University of São PauloSão PauloSP04044-020Brazil Research Group on phytocomplexes and Cell Signaling School of Health SciencesAnhembi Morumbi UniversitySão PauloSP03164-000Brazil Department of Biosciences and Oral Diagnosis Institute of Science and TechnologySão Paulo State University(ICT-UNESP)São PauloSP12231-280Brazil

Objective To evaluate the chemical composition and effects of Artemisia vulgaris(AV)hydroalcoholic extract(HEAV)on breast cancer cells(MCF-7 and SKBR-3),chronic myeloid leukemia(K562)and NIH/3T3 fibroblasts.Methods phytochemical analysis of HEAV was done by high-performance liquid chromatography-mass(HpLC)spectrometry.Viability and cell death studies were performed using trypan blue and Annexin/FITC-7AAD,respectively.Ferrostatin-1(Fer-1)and necrostatin-1(Nec-1)were used to assess the mode of HEAV-induced cell death and acetoxymethylester(BApTA-AM)was used to verify the involvement of cytosolic calcium in this event.Cytosolic calcium measurements were made using Fura-2-AM.Results HEAV decreased the viability of MCF-7,SKBR-3 and K562 cells(ppared to HEAV-exposed fibroblasts(pprimarily by late apoptosis and necrosis in assays using annexin V-FITC/7-AAD(pposed to HEAV alone(pppTA-AM,an intracellular Ca^(2+)chelator,decreased the number of non-viable cells treated with HEAV(ppartially dependent on lysosomal release of Ca^(2+).These effects may be related to artemisinin and caffeoylquinic acids,the main compounds identified in HEAV.

关键词： Artemisia vulgaris necroptosis ferroptosis late apoptosis Ca^(2+)signaling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Epidemiological, Clinical and Evolutionary Aspects of Human African Trypanosomiasis in Children in Nola

引用

Open Journal of pediatrics 2024年第2期14卷 344-358页

作者： Brice Olivier Bogning Mejiozem Gaspard Tékpa Synthia Ningatoloum Nazita Jocelyn Tony Nengom Danebera Lydie Verlaine Carine Judith Kiteze Nguinzanémou Rostand Juste Koyangboi Kombaya Iris vanessa Gaspiet Sonny Jean Chrysostome Gody Complexe Hospitalier pédiatrique de Bangui Bangui République Centrafricaine Service des Maladies Infectieuses H&#244pital de l’Amitié Bangui République Centrafricaine Faculté des Sciences de la Santé de l’Université de Bangui Bangui République Centrafricaine Centre Hospitalo Universitaire Communautaire de Bangui Bangui République Centrafricaine Faculté de Médecineet des Sciences Biomédicales Université de Yaoundé 1 Yaoundé Cameroun

Background: Human African trypanosomiasis (HAT) occurs in three historical foci in the Central African Republic. Objective: To describe the morbi-mortality of childhood HAT in rural Central African Republic with the aim of early management. Methods: Descriptive and analytic cross-sectional study conducted from January 1, 2017 to March 30, 2018 at Nola prefectural hospital. This study was included all children seen as outpatients and/or hospitalized in the pediatric wards, in whom the diagnosis of HAT was confirmed. Statistical analysis was performed using Epi-info software. Results: Forty children were included from Bilolo (60%), Nola (30%) and Salo (10%). The sex ratio was 0.66 with a median age of 8.65 ± 12.48 years. Fever (82.5%), nocturnal insomnia (75%), daytime somnolence (67.5%), headache (65%), polyarthralgia (62.5%), convulsions 52.5% (n = 21), tremor (27.5%), trypanidism (7.5%) and delirium (2.5%) were the main functional signs. Examination signs were adenopathy (52.5%), paresthesia (30%), decreased cutaneous-abdominal reflexes (25%) and osteoarticular reflexes (17.5%), hyperesthesia (20%), extrapyramidal hypertonia (15%) and depression (2.5%). The children were in the lymphatic-blood phase in 65% of cases, and meningoencephalitis in 35%. pentamidine was administered in 65% of cases. Four children died and 6 had neurological sequelae. There was an association between age under 5, Bilolo’s focus, the children’s history and the severity of the disease. Age under 5, gender, household, children’s activity, history and occurrence of sequelae were also associated. Conclusion: HAT remains a permanent threat to Central African children. Any clinical presentation combining long-term infectious signs and unexplained neurological or neuropsychological disorders must be treated with caution.

关键词： Morbidity-Mortality Child HAT Nola CAR

来源：

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Fungal diversity notes 1512–1610: taxonomic and phylogenetic contributions on genera and species of fungal taxa

引用

Fungal Diversity 2022年第6期117卷 1-272页

作者： Ruvishika S.Jayawardena Kevin D.Hyde Song Wang Ya‑Ru Sun Nakarin Suwannarach phongeun Sysouphanthong Mohamed A.Abdel‑Wahab Faten A.Abdel‑Aziz pranami D.Abeywickrama vanessa p.abreu Alireza Armand AndréAptroot Dan‑Feng Bao Dominik Begerow Jean‑Michel Bellanger Jadson D.p.Bezerra Digvijayini Bundhun Mark S.Calabon Ting Cao Taimy Cantillo João LVRCarvalho Napalai Chaiwan Che‑Chih Chen Régis Courtecuisse Bao‑Kai Cui Ulrike Damm Cvetomir M.Denchev Teodor T.Denchev Chun Y.Deng Bandarupalli Devadatha Nimali Ide Silva Lidiane Ados Santos Nawal K.Dubey Sylvain Dumez Himashi SFerdinandez André L.Firmino Yusufon Gaforov Achala J.Gajanayake Deecksha Gomdola Sugantha Gunaseelan Shucheng‑He Zin H.Htet Malarvizhi Kaliyaperumal Martin Kemler Kezhocuyi Kezo Nuwan DKularathnage Marco Leonardi Ji‑peng Li Chunfang Liao Shun Liu Michael Loizides Thatsanee Luangharn Jian Ma Hugo Madrid S.Mahadevakumar Sajeewa S.N.Maharachchikumbura Dimuthu S.Manamgoda María p.Martín Niranjan Mekala pierre‑Arthur Moreau Yan‑Hong Mu pasouvang pahoua Dhandevi pem Olinto L.pereira Wiphawanee phonrob Chayanard phukhamsakda Mubashar Raza Guang‑Cong Ren Andrea C.Rinaldi Walter Rossi Binu C.Samarakoon Milan CSamarakoon Vemuri V.Sarma Indunil C.Senanayake Archana Singh Maria F.Souza Cristina M.Souza‑Motta Adriano A.Spielmann Wenxin Su Xia Tang XingGuo Tian Kasun M.Thambugala Naritsada Thongklang Danushka S.Tennakoon Nopparat Wannathes Dingpeng Wei Stéphane Welti Subodini N.Wijesinghe Hongde Yang Yunhui Yang Hai‑Sheng Yuan Huang Zhang Jingyi Zhang Abhaya Balasuriya Chitrabhanu SBhunjun Timur S.Bulgakov Lei Cai Erio Camporesi putarak Chomnunti Y.S.Deepika Mingkwan Doilom Wei‑Jun Duan Shi‑Ling Han Naruemon Huanraluek EBGareth Jones NLakshmidevi Yu Li Saisamorn Lumyong Zong‑Long Luo Surapong Khuna Jaturong Kumla Ishara S.Manawasinghe Ausana Mapook Wilawan punyaboon Saowaluck Tibpromma Yong‑Zhong Lu JiYe Yan Yong Wang Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Innovative Institute for plant Health Zhongkai University of Agriculture and EngineeringGuangzhou 510225P.R.China Department of plant pathology College of AgricultureGuizhou UniversityGuiyang 550025GuizhouChina Research Center of Microbial Diversity and Sustainable Utilization Chiang Mai UniversityChiang Mai 50200Thailand Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Biotechnology and Ecology Institute Ministry of Agriculture and ForestryP.O.Box:811Vientiane CapitalLao PDR Department of Botany and Microbiology Faculty of ScienceSohag UniversitySohag 82524Egypt Beijing Key Laboratory of Environment-Friendly Management on Fruit Diseases and pests in North China Institute of Plant ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Departamento de Fitopatologia Universidade Federal de ViçosaViçosaMinas GeraisBrazil Laboratório de Botânica/Liquenologia Instituto de BiociênciasUniversidade Federal de Mato Grosso do SulAvenida Costa e Silva S/NBairro UniversitárioCampo GrandeMato Grosso do Sul CEP 79070-900Brazil College of Agriculture and Biological Sciences Dali UniversityDali 671003YunnanChina Department of Entomology and plant pathology Faculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Institute of plant Science and Microbiology Universität HamburgOrganismic Botany and MycologyOhnhorststr.1822609 HamburgGermany CEFE CNRSUniv.MontpellierEPHEIRDINSERM1919Route de Mende34293 Montpellier Cedex 5France Setor de Micologia Departamento de Biociências e TecnologiaInstituto de Patologia Tropical e Saúde PúblicaUniversidade Federal de GoiásRua 235S/NSetor UniversitárioGoiâniaGO CEP:74605-050Brazil Division of Biological Sciences College of Arts and SciencesUniversity of the Philippines Visayas5023 MiagaoIloiloPhilippines CA

This article is the 14th in the Fungal Diversity Notes series,wherein we report 98 taxa distributed in two phyla,seven classes,26 orders and 50 families which are described and illustrated.Taxa in this study were collected from Australia,Brazil,Burkina Faso,Chile,China,Cyprus,Egypt,France,French Guiana,India,Indonesia,Italy,Laos,Mexico,Russia,Sri Lanka,Thailand,and Vietnam.There are 59 new taxa,39 new hosts and new geographical distributions with one new combination.The 59 new species comprise Angustimassarina kunmingense,Asterina lopi,Asterina brigadeirensis,Bartalinia bidenticola,Bartalinia caryotae,Buellia pruinocalcarea,Coltricia insularis,Colletotrichum fexuosum,Colletotrichum thasutense,Coniochaeta caraganae,Coniothyrium yuccicola,Dematipyriforma aquatic,Dematipyriforma globispora,Dematipyriforma nilotica,Distoseptispora bambusicola,Fulvifomes jawadhuvensis,Fulvifomes malaiyanurensis,Fulvifomes thiruvannamalaiensis,Fusarium purpurea,Gerronema atrovirens,Gerronema favum,Gerronema keralense,Gerronema kuruvense,Grammothele taiwanensis,Hongkongmyces changchunensis,Hypoxylon inaequale,Kirschsteiniothelia acutisporum,Kirschsteiniothelia crustaceum,Kirschsteiniothelia extensum,Kirschsteiniothelia septemseptatum,Kirschsteiniothelia spatiosum,Lecanora immersocalcarea,Lepiota subthailandica,Lindgomyces guizhouensis,Marthe asmius pallidoaurantiacus,Marasmius tangerinus,Neovaginatispora mangiferae,pararamichloridium aquisubtropicum,pestalotiopsis piraubensis,phacidium chinaum,phaeoisaria goiasensis,phaeoseptum thailandicum,pleurothecium aquisubtropicum,pseudocercospora vernoniae,pyrenophora verruculosa,Rhachomyces cruralis,Rhachomyces hyperommae,Rhachomyces magrinii,Rhachomyces platyprosophi,Rhizomarasmius cunninghamietorum,Skeletocutis cangshanensis,Skeletocutis subchrysella,Sporisorium anadelphiae-leptocomae,Tetraploa dashaoensis,Tomentella exiguelata,Tomentella fuscoaraneosa,Tricholomopsis lechatii,Vaginatispora favispora and Wetmoreana blastidiocalcarea.The new combination is Torula sundara.The 39 new records on ho

关键词： 59 New taxa 39 New records Ascomycota Basidiomycota Dothideomycetes Lecanoromycetes Leotiomycetes Sordariomycetes Ustilaginomycotina

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactivity of mackerel peptides on obesity and insulin resistance,an in-vivo study

引用

Food Bioscience 2022年第3期47卷 394-402页

作者： Soheila Abachi Hokmabadinazhad Jean-philippe Songpadith vanessa p.Houde Geneviève pilon Ismail Fliss André Marette Laurent Bazinet Lucie Beaulieu Institute of Nutrition and Functional Foods (INAF) Université LavalQuebecQuebecCanada Department of Food Science Faculty of Agricultural and Food SciencesUniversité LavalQuebecQuebecCanada Department of Medicine Faculty of MedicineCardiology Axis of the Quebec Heart and Lung InstituteQuebecQuebecCanada

Of many metabolic irregularity risk factors,glucose intolerance,insulin resistance,and abdominal obesity are the main ones.The risk of vascular diseases and cancers is rather high in such individuals therefore its treatment and prevention are equally important for the health of population.Marine including fish biopeptides have frequently shown to prevent and or ameliorate these risk factors.In our earlier studies,Atlantic mackerel hydrolysate and its fractions showed promising effects on immunity and hypertension.We,therefore,in the current study,aimed to examine the effects of mackerel hydrolysate along its cationic peptides,isolated at pH3 using electrodialysis with ultrafiltration membrane,on metabolic disorder factors in diet-induced insulin resistant obese mice.Mice were fed the chow and or the hypercaloric diet (high fat high sucrose) for the duration of 8-weeks.Subsequently the hypercaloric fed insulin resistant obese mice were gavaged daily either the vehicle and or the test material at the dosage of 208 mg of sample protein per kg mice body weight.According to our observations,mackerel peptides could not effectively modulate food intake,weight gain,adiposity,plasma glucose and insulin concentrations,hepatic cholesterol,and triglyceride levels.Thus,obesity and metabolic impairments could not be averted by the treatments in insulin resistant obese mice.In conclusion,anti-hypertensive,and immunomodulatory attributes of mackerel peptides at the tested concentrations do not seem to be correlated with its metabolic syndrome benefiting effects.To presume a general statement about the metabolic syndrome benefiting potency of Atlantic mackerel's biopeptides further research is warranted.

关键词： Atlantic mackerel Bioactivity Cationic peptides Diabetes Obesity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Antipsychotics preserve telomere length in peripheral blood mononuclear cells after acute oxidative stress injury

引用

Neural Regeneration Research 2022年第5期17卷 1156-1160页

作者： Gabriel B.polho Giancarlo M.Cardillo Daniel S.Kerr Thais Chile Wagner F.Gattaz Orestes V.Forlenza Helena p.Brentani vanessa J.De-paula Laboratório de Neurociências(LIM-27) Departamento e Instituto de PsiquiatriaHospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSPBrasil Laboratório de psicobiologia(LIM-23) Departamento e Instituto de PsiquiatriaHospital das Clinicas HCFMUSPFaculdade de MedicinaUniversidade de São PauloSPBrasil

Antipsychotics may prolong or retain telomere length,affect mitochondrial function,and then affect the metabolism of nerve cells.To validate the hypothesis that antipsychotics can prolong telomere length after oxidative stress injury,leukocytes from healthy volunteers were extracted using Ficoll-Histopaque density gradient.The mononuclear cells layer was resuspended in cell culture medium.Oxidative stress was induced with hydrogen peroxide in cultured leukocytes.Four days later,leukocytes were treated with aripiprazole,haloperidol or clozapine for 7 days.Real-time pCR revealed that treatments with aripiprazole and haloperidol increased the telomere length by 23%and 20%in peripheral blood mononuclear cells after acute oxidative stress injury.These results suggest that haloperidol and aripiprazole can reduce the damage to telomeres induced by oxidative stress.The experiment procedure was approved by the Ethics Committee of Faculty of Medicine of the University of Sao paulo(FMUSp/CAAE approval No.52622616.8.0000.0065).

关键词： antipsychotic aripiprazole cell culture clozapine haloperidol oxidative stress peripheral blood mononuclear cell telomere length

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Feeding ecology of a highly aerial bird during its long breeding season

引用

Avian Research 2023年第1期14卷 62-69页

作者： Sandra Fernandes vanessa A.Mata Luis p.da Silva CIBIO Centro de Investigacão em Biodiversidade e Recursos GenéticosInBIO Laboratório AssociadoCampus de VairãoUniversidade do Porto4485-661Vairão Portugal Departamento de Biologia Faculdade de CiênciasUniversidade do Porto4099-002PortoPortugal BIOpOLIS program in Genomics Biodiversity and Land PlanningCIBIOCampus de Vairão4485-661VairãaoPortugal

pallid Swifts(Apus pallidus),as other swifts,are birds extremely adapted to an aerial lifestyle,showing unique adaptations that allow them to fly almost continuously.The diet of these non-stopping high-altitudinal aerial birds has been mostly studied through techniques that fail to produce highly resolved prey identifications,and for that have been replaced by molecular techniques,such as DNA metabarcoding.Faecal samples of pallid Swifts were monthly collected from a colony in the north of portugal during the breeding season.DNA from the faecal samples was used to sex the birds and to identify the arthropods present in the diet through DNA metabarcoding.From the detected prey items,74 families were identified belonging to 16 orders,with Hymenoptera and Hemiptera being the most frequently consumed.There were seasonal variations in diet richness,composition and prey size.Regarding the diet of males and females,although no differences were found between the diet of males and females in terms of composition and richness,there were differences in the size of arthropods preyed by the different sexes,with males feeding on larger arthropods.The large seasonal variation in pallid Swifts’diet during the breeding season is probably a result of spatiotemporal variation in aerial prey,of which swifts likely predate opportunistically.Although no significant differences were detected in diet richness and composition between sexes,the fact that males consumed larger prey may suggest the existence of sexual dietary segregation in this group of birds.At last,several pest species were found in these swifts’diet,which,if studied through DNA metabarcoding,can be used to monitor small arthropods,including airborne pests.

关键词： AMerial foraging Apus plius Dietary s-ssonal variation FReeding omlogy Metahercoding Opimel foraging theoary

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Forage offering and seasonal intake comparisons to evaluate European rabbit threat in Nothofagus forests of southern patagonia

引用

Ecological processes 2022年第1期11卷 604-617页

作者： Alejandro Huertas Herrera Mónica Toro‑Manríquez Laura Borrelli María vanessa Lencinas Guillermo Martínez pastur Centro de Investigación en Ecosistemas de la patagonia(CIEp) Camino Baguales s/n Km 4CoyhaiqueChile Ulterarius Consultores Ambientales y Científicos Ltda. Ignacio Serrano 420CoyhaiqueChile Instituto Nacional de Tecnología Agropecuaria(INTA) EEA BarilocheModesta Victoria 44508400 San Carlos de BarilocheRío NegroArgentina Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas(CADIC)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina.

Background:The European rabbit(Oryctolagus cuniculus L.1758)was introduced into different regions of the world,generating significant trade‑offs that critically impacted native vegetation.Here,we evaluate the rabbit’s forage intakes in three vegetation types(forests,shrublands,and grasslands)along the four seasons in a temperate forest landscape in Southern patagonia and discuss the potential threats over native vegetation.We formulated the following questions:(i)what is the forage offer at each vegetation type?(ii)what is the rabbit’s forage intake and how it varied across the seasons along the year?and(iii)which vegetation types and plant life forms were more used according to the rabbit’s forage intakes?Methods:We censused understory vegetation to characterize the forage offer at each vegetation type and determined seasonal dietary intakes using microhistological analysis of pellets.The plant species identified in the field were grouped according to life form classes(tree regeneration,shrubs,forbs,graminoids,orchids,ferns,bryophytes,and hemiparasites).Data were analysed through uni‑and multi‑variate analyses,determining relationships between forage offer and the rabbit’s forage intakes.Results:Forage intakes revealed changes in plant life form consumption across vegetation types,where intake pressure was considerably different for tree regeneration(p=0.001),graminoids(p=0.001),and hemiparasites(p=0.001).Besides,significant changes in consumption among seasons were detected for shrubs(p=0.001),ferns(p=0.030),and hemiparasites(p=0.002).Although many species play an important role in the rabbit’s forage intake networks(e.g.,Chiliotrichum diffusum,Holcus lanatus),the strongest intake linkages were found in exotic grasses(e.g.,poa pratensis and Festuca sp.),native hemiparasites(e.g.,Misodendrum sp.),native shrubs(e.g.,Empetrum rubrum),and native trees(e.g.,Nothofagus sp.).The summer and autumn seasons presented higher intake compared to the winter and spring seasons.Furthermore,hemiparasites intake(e.g.,Misodendrum

关键词： Forest ecology Oryctolagus cuniculus plant-animal interaction Vegetation type Herbivory Habitat use

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：