questionsmedicales.fr
Phénomènes biologiques
Évolution biologique
Isolement reproductif
Isolement reproductif : Questions médicales fréquentes
Termes MeSH sélectionnés :
Diagnostic
5
Isolement reproductif
Comportement animal
Comportement animal
Isolement reproductif
Isolement reproductif
Rituels de cour
Modélisation mathématique
Isolement reproductif
Symptômes
5
Isolement reproductif
Comportement animal
Hybrides
Isolement reproductif
Comportement animal
Isolement reproductif
Stress
Comportement animal
Changements environnementaux
Isolement reproductif
Prévention
5
Préservation des habitats
Isolement reproductif
Corridors écologiques
Isolement reproductif
Protection des espèces
Isolement reproductif
Traitements
5
Isolement reproductif
Interventions
Reproduction assistée
Isolement reproductif
Croisement
Isolement reproductif
Traitements hormonaux
Isolement reproductif
Complications
5
Diversité génétique
Isolement reproductif
Survie des espèces
Isolement reproductif
Écosystème
Isolement reproductif
Espèces envahissantes
Isolement reproductif
Évolution
Isolement reproductif
Facteurs de risque
5
Fragmentation des habitats
Isolement reproductif
Changements climatiques
Isolement reproductif
Urbanisation
Isolement reproductif
Pratiques agricoles
Isolement reproductif
Maladies
Isolement reproductif
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"text": "L'isolement reproductif se diagnostique par l'observation de comportements de reproduction et de compatibilité génétique."
}
},
{
"@type": "Question",
"name": "Quels tests génétiques sont utilisés ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des tests de compatibilité génétique, comme les analyses d'ADN, peuvent être effectués."
}
},
{
"@type": "Question",
"name": "L'observation comportementale est-elle suffisante ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'observation des comportements de cour et de reproduction peut suffire pour le diagnostic."
}
},
{
"@type": "Question",
"name": "Quels signes indiquent un isolement ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des différences dans les rituels de cour ou l'incapacité à produire une descendance viable sont des signes."
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{
"@type": "Question",
"name": "Peut-on utiliser des modèles mathématiques ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des modèles mathématiques peuvent aider à prédire les résultats de l'isolement reproductif."
}
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{
"@type": "Question",
"name": "Quels symptômes indiquent un isolement reproductif ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes incluent l'absence de reproduction entre populations et des comportements de cour inappropriés."
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{
"@type": "Question",
"name": "Les hybrides sont-ils un symptôme ?",
"position": 7,
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{
"@type": "Question",
"name": "Comment les comportements de cour changent-ils ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les comportements de cour peuvent devenir moins attractifs ou inappropriés entre espèces isolées."
}
},
{
"@type": "Question",
"name": "Y a-t-il des signes de stress chez les espèces ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le stress peut se manifester par des comportements anormaux lors des interactions reproductives."
}
},
{
"@type": "Question",
"name": "Les changements environnementaux affectent-ils les symptômes ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les changements environnementaux peuvent exacerber les symptômes d'isolement reproductif."
}
},
{
"@type": "Question",
"name": "Comment prévenir l'isolement reproductif ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "La préservation des habitats et la gestion des populations sont essentielles pour prévenir l'isolement."
}
},
{
"@type": "Question",
"name": "Les corridors écologiques aident-ils ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les corridors écologiques facilitent les échanges entre populations et réduisent l'isolement."
}
},
{
"@type": "Question",
"name": "L'éducation des communautés est-elle importante ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, sensibiliser les communautés à la biodiversité aide à prévenir l'isolement reproductif."
}
},
{
"@type": "Question",
"name": "Les lois de protection des espèces sont-elles efficaces ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des lois strictes peuvent protéger les espèces et réduire les risques d'isolement."
}
},
{
"@type": "Question",
"name": "Comment la recherche contribue-t-elle à la prévention ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "La recherche aide à comprendre les mécanismes d'isolement et à développer des stratégies de conservation."
}
},
{
"@type": "Question",
"name": "Peut-on traiter l'isolement reproductif ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Il n'existe pas de traitement direct, mais des interventions peuvent favoriser la reproduction."
}
},
{
"@type": "Question",
"name": "Comment favoriser la reproduction entre espèces ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des programmes de conservation et de gestion des habitats peuvent aider à favoriser la reproduction."
}
},
{
"@type": "Question",
"name": "Les techniques de reproduction assistée sont-elles utiles ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, la reproduction assistée peut aider à surmonter certains obstacles à la reproduction."
}
},
{
"@type": "Question",
"name": "Les croisements contrôlés sont-ils efficaces ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les croisements contrôlés peuvent être utilisés pour étudier et potentiellement réduire l'isolement."
}
},
{
"@type": "Question",
"name": "Y a-t-il des traitements hormonaux possibles ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des traitements hormonaux peuvent être envisagés pour stimuler la reproduction chez certaines espèces."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent résulter de l'isolement ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'isolement peut entraîner une perte de diversité génétique et une vulnérabilité accrue aux maladies."
}
},
{
"@type": "Question",
"name": "L'isolement reproductif affecte-t-il la survie des espèces ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'isolement peut réduire la capacité d'adaptation des espèces, menaçant leur survie."
}
},
{
"@type": "Question",
"name": "Y a-t-il des impacts sur l'écosystème ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'isolement reproductif peut perturber les interactions écologiques et l'équilibre des écosystèmes."
}
},
{
"@type": "Question",
"name": "Les espèces envahissantes aggravent-elles l'isolement ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les espèces envahissantes peuvent exacerber l'isolement en compétition pour les ressources."
}
},
{
"@type": "Question",
"name": "Comment l'isolement influence-t-il l'évolution ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'isolement reproductif peut conduire à la spéciation, influençant ainsi le cours de l'évolution."
}
},
{
"@type": "Question",
"name": "Quels facteurs augmentent le risque d'isolement ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "La fragmentation des habitats et la perte de biodiversité augmentent le risque d'isolement."
}
},
{
"@type": "Question",
"name": "Les changements climatiques sont-ils un facteur ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les changements climatiques peuvent modifier les habitats et accroître l'isolement reproductif."
}
},
{
"@type": "Question",
"name": "L'urbanisation influence-t-elle l'isolement ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, l'urbanisation peut fragmenter les habitats et limiter les interactions entre populations."
}
},
{
"@type": "Question",
"name": "Les pratiques agricoles affectent-elles l'isolement ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les pratiques agricoles intensives peuvent réduire les habitats et favoriser l'isolement."
}
},
{
"@type": "Question",
"name": "Les maladies peuvent-elles être un facteur de risque ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les épidémies peuvent réduire les populations et augmenter l'isolement reproductif."
}
}
]
}
]
}
Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale
Validation scientifique effectuée le 25/03/2025
Contenu vérifié selon les dernières recommandations médicales
4 publications dans cette catégorie
Affiliations :
Department of Biology, University of North Carolina, Chapel Hill, North Carolina, 27599.
Publications dans "Isolement reproductif" :
3 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publications dans "Isolement reproductif" :
3 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
3 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
3 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China; State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Electronic address: wanjianmin@caas.cn.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
IST Austria, Klosterneuburg, Austria.
Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
IST Austria, Klosterneuburg, Austria.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
Centre de Recherche sur la Biodiversité et l'Environnement (CRBE), Université de Toulouse, CNRS, IRD, Toulouse INP, Université Toulouse 3 - Paul Sabatier (UT3), Toulouse, France thomas.aubier@normalesup.org.
Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
Department of Marine Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden.
Linnaeus Centre for Marine Evolutionary Biology, University of Gothenburg, 453 96 Strömstad, Sweden.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
Department of Biology University of Winnipeg Winnipeg MB Canada.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China; State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650200, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Publications dans "Isolement reproductif" :
2 publications dans cette catégorie
Affiliations :
State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
Publications dans "Isolement reproductif" :
Perfusion weighted imaging (PWI) is critical for determining whether stroke patients presenting in an extended time window are candidates for mechanical thrombectomy. However, PWI is not always availa...
The National Institutes of Health (NIH) FHV score was developed to quantify the burden of FHV and applied to magnetic resonance imaging scans of stroke patients with fluid-attenuated inversion recover...
There were 101 patients included in the analysis, of whom 78% had a perfusion deficit detected on PWI with a mean lesion volume of 47 (±59) mL. The NIH-FHV score was strongly associated with the PWI l...
The NIH-FHV score provides an estimate of the PWI lesion volume and, when combined with diffusion weighted imaging, may be helpful when trying to determine whether there is a clinically relevant diffu...
Although hypothermic machine perfusion (HMP) is associated with improved kidney graft viability and function, the underlying biological mechanisms are unknown. Untargeted metabolomic profiling may ide...
This letter responds to the article "Neither Ethical nor Prudent: Why Not to Choose Normothermic Regional Perfusion," by Adam Omelianchuk et al., in the July-August 2024 issue of the Hastings Center R...
Type 2 diabetes mellitus (T2DM) is associated with altered cerebral vasoreactivity, cognitive impairment, and functional decline. Magnetic Resonance (MR) perfusion can be used to assess cerebral blood...
The study included 52 patients diagnosed with T2DM and 39 healthy individuals. The diabetic patients were classified into three groups (PRP: proliferative retinopathy, NPRP: non-proliferative retinopa...
The comparison between the T2DM group and the control group revealed that rCBF values of bilateral frontal lobes, cingulate gyrus, medial temporal lobe, thalami and right occipital lobe were measured ...
Regional hypoperfusion was encountered in most of the lobes in the T2DM group when compared with the healthy group. However, in terms of rCBF values, there was no significant difference among the thre...
Pulmonary blood flow can be assessed on ventilation-perfusion (VQ) scan with relative lung perfusion, with a 55% to 45% (or 10%) right-to-left differential considered normal. We hypothesized that wide...
We conducted a retrospective cohort study on all patients who underwent double-lung transplant in our program between 2005 and 2016, identifying patients with a wide perfusion differential of >10% on ...
Of 340 patients who met inclusion criteria, 169 (49%) had a relative perfusion differential of ≥ 10% on a 3-mo VQ scan. Patients with increased perfusion differential had increased risk of death or re...
Wide lung perfusion differential was common after lung transplant in our cohort and associated with increased risk of death, poor lung function, and CLAD onset. The nature of this abnormality and its ...
Although COVID-19 infection is associated with the increased risk of pulmonary thromboembolism (PTE), COVID-19 pulmonary lesions cause ventilation-perfusion (V/Q) patterns other than PTE. Although ext...
This article describes fabrication of a customizable bioreactor, which comprises a perfusion system and coverslip-based tissue culture chamber that allow centimeter-scale vascularized or otherwise can...
We aimed at examining both the incidence and extent of different lung perfusion abnormalities as well as the relationship between them on Tc-99m macroaggregated albumin (MAA) perfusion-only SPECT/CT s...
Ninety-one patients (71.4 ± 13.9 years; range: 29-98 years, median age: 74 years; 45 female and 46 male) with confirmed SARS-CoV-2 virus infection were included in this retrospective study. After perf...
Moderately severe parenchymal lesions were detected in 87 (95.6%) patients. Although, 50 (54.95%) patients were depicted to have MM lesions, the whole patient cohort was mildly affected by this abnorm...
Heterogeneous perfusion abnormalities were found in most of COVID-19 patients: parenchymal lesions with normal, decreased or increased perfusion and perfusion defects in healthy lung areas. These phen...
Liver transplantation is the only chance of cure for people with end-stage liver disease and some people with advanced liver cancers or acute liver failure. The increasing prevalence of these conditio...
To evaluate the effects of different methods of machine perfusion (including hypothermic oxygenated machine perfusion (HOPE), normothermic machine perfusion (NMP), controlled oxygenated rewarming, and...
We used standard, extensive Cochrane search methods. The latest search date was 10 January 2023....
We included randomised clinical trials which compared different methods of machine perfusion, either with each other or with SCS. Studies comparing HOPE via both hepatic artery and portal vein, or via...
We used standard Cochrane methods. Our primary outcomes were 1. overall participant survival, 2. quality of life, and 3. serious adverse events. Secondary outcomes were 4. graft survival, 5. ischaemic...
We included seven randomised trials (1024 transplant recipients from 1301 randomised/included livers). All trials were parallel two-group trials; four compared HOPE versus SCS, and three compared NMP ...
In situations where the decision has been made to transplant a liver donated after circulatory death or donated following brain death, end-ischaemic HOPE will provide superior clinically relevant outc...
The field of organ transplantation has been facing the problem of organ shortage for several years. It is even more crucial since the number of patients on the waiting list is growing steadily. There ...