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1.
Nature ; 575(7781): 55-56, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31680127
2.
Biol Bull ; 237(2): 111-118, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31714853

RESUMO

Despite the fact that Hydra has been studied for more than 200 years, we know surprisingly little about its life history. We show that Hydra vulgaris embryos hatch sporadically over a period ranging from a few days to nine months. We also report, for what seems to be the first time, the presence of Hydra in a vernal pool. Phylogenetic analysis and sexual crossing show that this Hydra is a member of the cosmopolitan Vulgaris clade and is not reproductively isolated from other members of the clade. Our findings lead us to hypothesize that Hydra evolved in an unstable freshwater habitat in which survival required that its life cycle include the use of a bet-hedging reproductive strategy and the formation of an embryo that is desiccation resistant and that can remain dormant for long periods of time.


Assuntos
Hydra , Animais , Filogenia , Reprodução , Estações do Ano
3.
Zootaxa ; 4623(3): zootaxa.4623.3.9, 2019 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-31716253

RESUMO

Cricket mating behavior reflects different strategies developed by sexual selection throughout evolutionary time. To our knowledge, only one species of the Neotropical cricket Trigonidiinae had its mating behavior studied so far. Here we expand this knowledge by describing the mating behavior of Cranistus colliurides Stål, 1861, a cricket commonly found in bushes and grasses along open fields or the forest edge. Adult crickets were collected in the municipality of Capão do Leão, State of Rio Grande do Sul, Brazil. Trials were carried out in laboratory to characterize the mating sequence. We quantified elapsed time of each behavioral sequence and discussed its implications in the observed mating behavior. The males of C. colliurides attracted females by means of a continuous trill, and receptive female triggers the beginning of the courtship through antennation. During courtship, copulation and post-copulatory actions, males showed a complex communication system based on information send to female by substrate vibration and an elaborated repertoire composed by calling, courtship and post-copulatory song. The mating behavior here described reveals divergence between related species hitherto studied which give us clues to understand how the sexual selection shaped the complex behaviors exhibited by Trigonidiinae crickets presently.


Assuntos
Gryllidae , Animais , Brasil , Copulação , Corte , Feminino , Masculino , Reprodução , Comportamento Sexual Animal
4.
Zootaxa ; 4560(3): zootaxa.4560.3.11, 2019 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-31716575

RESUMO

Female specimens of Niganda phichai Pellinen 2012 and Saliocleta puyak Pellinen 2017, were detected by author during last years collecting with mixed -and uv-light lamps in Northern-Thailand.


Assuntos
Lepidópteros , Mariposas , Animais , Feminino , Reprodução , Tailândia , Raios Ultravioleta
5.
Zootaxa ; 4576(3): zootaxa.4576.3.2, 2019 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-31715747

RESUMO

Anomaloglossus is a species-rich genus of frogs endemic to the Guiana Shield that still harbors several unnamed species. Within the A. stepheni species group (which includes four valid nominal species), A. baeobatrachus has an uncertain taxonomic status, notably because the holotype was an unvouchered specimen depicted in a popular journal. Another member of this group, A. leopardus, was only superficially described, lacking information on the sex of specimens in the type series and on advertisement call. Therefore, these two taxa need clarifications in order to allow the description of the extant undescribed species. In this paper, we redescribe A. baeobatrachus based on newly collected material from the species type locality and provide information about its reproductive ecology. We also provide an amended definition of A. leopardus using newly collected material from its type locality. These two species form a clade along with a third species from the Eastern Guiana Shield, which is also described herein. The reproductive biology of A. baeobatrachus and A. stepheni is very similar. Both species have endotrophic and nidicolous tadpoles, despite being distantly related, suggesting independent evolution of this breeding mode. The new species and A. leopardus, on the other hand, have exotrophic tadpoles.


Assuntos
Anuros , Reprodução , Animais , Guiana , Larva
6.
Zootaxa ; 4695(4): zootaxa.4695.4.9, 2019 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-31719347

RESUMO

Tenothrips keruing sp. n. is described from Malaysia. This new species was taken from the flowers of Dipterocarpus sublamellatus (local name Keruing kerut) during the recent mass-flowering. The male of this species has a pair of stout setae on abdominal tergite IX, and there are no sternal pore plates. A key to species of Tenothrips from Indomalaysia is provided.


Assuntos
Dipterocarpaceae , Tisanópteros , Animais , Flores , Malásia , Masculino , Reprodução
7.
Zootaxa ; 4658(3): zootaxa.4658.3.4, 2019 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-31716732

RESUMO

A new frog of the genus Pristimantis is described from a montane cloud forest at 9 de Octubre (2°14'52" S, 78°16'37" W; 1778 m) province of Morona Santiago in the upper basin of the Upano River, southeastern Ecuador. The description of the new species is based on the examination of eleven adult males and three adult females. The new taxon can be readily distinguished from other congeneric species that inhabit the eastern Andes of Ecuador by the unique combination of the following characters: small body (adult males SVL 12.0-17.0 mm, adult females SVL 18.5-21.7 mm); skin of dorsum finely shagreen with two subconical scapular tubercles, weak and discontinuous dorsolateral folds in the middle of the back; large tympanum 70-93% of eye diameter; snout subacuminate in dorsal view, rounded in profile; upper eyelid bearing four or five small and flat supraocular tubercles; males lacking vocal slits and nuptial pads; all discs on fingers and toes lanceolate. Additionally, we provide information on the advertisement call and natural history of the new species.


Assuntos
Anuros , Reprodução , Distribuição Animal , Animais , Equador , Feminino , Masculino , Filogenia
8.
Zootaxa ; 4603(1): zootaxa.4603.1.5, 2019 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-31717241

RESUMO

In this study, two new brackish-water species of Macrostomum (M. shenda n. sp. and M. spiriger n. sp.) collected from Shenzhen, China, were described based on morphological, histological, and molecular phylogenetic analyses. Macrostomum shenda n. sp. differs from its congeners in the oblique and non-thickening distal opening of its narrow funnel-shaped stylet. In addition, its sperm have neither bristles nor brush, and are surrounded by an undulating membrane in the mid-body region. In M. spiriger n. sp., the stylet is spirally twisted. Its reproductive apparatus has a seminal bursal pore opening exteriorly. Results of the 18S and 28S rDNA phylogenetic analyses also support the establishments of these two new species. Moreover, the 18S and 28S rDNA sequences of some species within Macrostomum in previous studies have been revised to avoid ambiguity, while Macrostomum dongyuanensis Wang Sun, 2015 was re-identified as a new record of M. quiritium Kolasa, 1973 from China.


Assuntos
Platelmintos , Animais , China , DNA Ribossômico , Filogenia , Reprodução
9.
Vet Clin North Am Equine Pract ; 35(3): 607-642, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31672204

RESUMO

Donkeys are nonseasonal, polyestrous, territorial, and nonharem breeders. Although there are many similarities between horses and donkeys, there are also reproductive features that differ, from the longer cervix in the jenny to spermatogenic efficiency in the jack. Mules display reproductive cyclic activity but are rarely fertile. Frozen donkey semen has high pregnancy rates in mares, but lower rates in jennies. This article reviews key aspects of donkey and mule reproductive physiology, reproductive medicine, and assisted reproductive techniques that are useful for practitioners offering assisted reproductive techniques, and also for practitioners with the occasional client with a basic reproductive question.


Assuntos
Equidae/fisiologia , Reprodução/fisiologia , Técnicas de Reprodução Assistida/veterinária , Animais , Feminino , Cavalos , Masculino , Gravidez
10.
Rev Bras Epidemiol ; 22Suppl 02(Suppl 02): E190012.SUPL.2, 2019.
Artigo em Português, Inglês | MEDLINE | ID: mdl-31596383

RESUMO

OBJECTIVE: To evaluate the prevalence of noncommunicable disease (NCD) indicators, including laboratory tests, in the population of Brazilian women of reproductive age, according to whether or not they receive the Bolsa Família (BF) benefit. METHODS: A total of 3,131 women aged 18 to 49 years old who participated in the National Health Survey (Pesquisa Nacional de Saúde ) laboratory examination sub-sample were considered. We compared indicators among women of reproductive age (18 to 49 years old) who reported receiving BF or not, and calculated prevalence and confidence intervals, using Pearson's χ2. RESULTS: Women of reproductive age who were beneficiaries of BF had worse health outcomes, such as a greater occurrence of being overweight (33.5%) and obese (26.9%) (p < 0.001), having hypertension (13.4% versus 4.4%, p < 0.001), used more tobacco (11.2% versus 8.2%, p = 0.029), and perceived their health as worse (6.2% versus 2.4%, p < 0.001). CONCLUSION: Several NCD indicators were worse among women of childbearing age who were beneficiaries of BF. It should be emphasized that this is not a causal relationship, with BF being a marker of inequalities among women. The benefit has been directed to the population with greater health needs, and seeks to reduce inequities.


Assuntos
Doenças não Transmissíveis/epidemiologia , Assistência Pública/estatística & dados numéricos , Adolescente , Adulto , Fatores Etários , Brasil/epidemiologia , Doença Crônica , Estudos Transversais , Feminino , Inquéritos Epidemiológicos/métodos , Inquéritos Epidemiológicos/estatística & dados numéricos , Humanos , Pessoa de Meia-Idade , Prevalência , Valores de Referência , Reprodução/fisiologia , Fatores de Risco , Fatores Socioeconômicos , Adulto Jovem
11.
Medicine (Baltimore) ; 98(41): e17494, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31593115

RESUMO

BACKGROUND: Infertility has troubled the world's 186 million people, and male infertility accounts for more than half. The literature of physical exercise related to semen quality has shown inconsistent results, and there is currently no systematic review to evaluate the effects of exercise on reproductive outcomes in male infertility patients. This study aims to assessing the effects of exercise interventions based on randomized controlled trials (RCTs) on semen quality and reproductive outcomes in male infertility. METHODS: English and Chinese literature about physical exercise treatment for male infertility published before July 31, 2019 will be systematic searched in PubMed, Embase, Web of Science, Cochrane Library, Open Grey, Clinicaltrials.gov, Chinese Clinical Trial Registry, WANFANG, VIP Chinese Science and Technology Journal Database, CNKI, Chinese biomedical document service system (SinoMed). Only RCTs of patients with male infertility will be included. Literature screening, data extraction, and the assessment of risk of bias will be independently conducted by 2 reviewers, and the 3rd reviewer will be consulted if any different opinions existed. Live-birth rate, pregnancy rate, adverse events (including miscarriage), sperm concentration, progressive motility, sperm morphology, and sperm DNA fragmentation will be evaluated. Systematic review and meta-analysis will be produced by RevMan 5.3 and Stata 14.0. This protocol reported in accordance with the Preferred Reporting Items for Systematic Review and Meta-analysis Protocols (PRISMA-P) statement, and we will report the systematic review by following the PRISMA statement. CONCLUSION AND DISSEMINATION: We will assess the efficacy and safety of physical exercise on semen quality and reproductive outcomes in infertile men. The findings will be published in a peer-reviewed journal to provide evidence-based medical evidence for clinical decision making and the patient's lifestyle guidance. REGISTRATION INFORMATION: PROSPERO CRD42019140294.


Assuntos
Exercício/fisiologia , Infertilidade Masculina/epidemiologia , Reprodução/fisiologia , Espermatozoides/citologia , Adolescente , Adulto , Fragmentação do DNA , Feminino , Humanos , Nascimento Vivo/epidemiologia , Masculino , Pessoa de Meia-Idade , Gravidez , Taxa de Gravidez/tendências , Ensaios Clínicos Controlados Aleatórios como Assunto , Análise do Sêmen/estatística & dados numéricos , Contagem de Espermatozoides/estatística & dados numéricos , Espermatozoides/metabolismo , Adulto Jovem
12.
Oecologia ; 191(3): 709-719, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31598776

RESUMO

Predicting how organisms respond to climate change requires that we understand the temperature dependence of fitness in relevant ecological contexts (e.g., with or without predation risk). Predation risk often induces changes to life history traits that are themselves temperature dependent. We explore how perceived predation risk and temperature interact to determine fitness (indicated by the intrinsic rate of increase, r) through changes to its underlying components (net reproductive rate, generation time, and survival) in Daphnia magna. We exposed Daphnia to predation cues from dragonfly naiads early, late, or throughout their ontogeny. Predation risk increased r differentially across temperatures and depending on the timing of exposure to predation cues. The timing of predation risk likewise altered the temperature-dependent response of T and R0. Daphnia at hotter temperatures responded to predation risk by increasing r through a combination of increased R0 and decreased T that together countered an increase in mortality rate. However, only D. magna that experienced predation cues early in ontogeny showed elevated r at colder temperatures. These results highlight the fact that phenotypically plastic responses of life history traits to predation risk can be strongly temperature dependent.


Assuntos
Odonatos , Animais , Daphnia , Comportamento Predatório , Reprodução , Temperatura Ambiente
13.
Oecologia ; 191(4): 1003-1014, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31624958

RESUMO

Rapid climate warming is driving organisms to advance timing of reproduction with earlier springs, but the rate of advancement shows large variation, even among populations of the same species. In this study, we investigated how the rate of advancement in timing of reproduction with a warming climate varies for barnacle goose (Branta leucopsis) populations breeding at different latitudes in the Arctic. We hypothesized that populations breeding further North are generally more time constrained and, therefore, produce clutches earlier relative to the onset of spring than southern populations. Therefore, with increasing temperatures and a progressive relief of time constraint, we expected latitudinal differences to decrease. For the years 2000-2016, we determined the onset of spring from snow cover data derived from satellite images, and compiled data on egg laying date and reproductive performance in one low-Arctic and two high-Arctic sites. As expected, high-Arctic geese laid their eggs earlier relative to snowmelt than low-Arctic geese. Contrary to expectations, advancement in laying dates was similar in high- and low-Arctic colonies, at a rate of 27% of the advance in date of snowmelt. Although advancement of egg laying did not fully compensate for the advancement of snowmelt, geese laying eggs at intermediate dates in the low Arctic were the most successful breeders. In the high Arctic, however, early nesting geese were the most successful breeders, suggesting that high-Arctic geese have not advanced their laying dates sufficiently to earlier springs. This indicates that high-Arctic geese especially are vulnerable to negative effects of climate warming.


Assuntos
Migração Animal , Gansos , Animais , Regiões Árticas , Clima , Reprodução , Estações do Ano
14.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi ; 31(4): 362-367, 2019 Sep 19.
Artigo em Chinês | MEDLINE | ID: mdl-31612669

RESUMO

OBJECTIVE: To compare the difference of fertility of Biomphalaria glabrata snails between self-fertilization and cross-fertilization and to observe the circadian rhythm of laying eggs, the effect of light on laying eggs and the tolerance of the snail to water and food deficiency, so as to provide the evidence for control and elimination of B. glabrata snails in the field. METHODS: Under laboratory conditions, a single B. glabrata egg for self-fertilization was separated and hatched individually, and young snails were raised in different plastic boxes individually. The eggs for cross-fertilization were hatched and the young snails were fed in the same plastic box. The ability of spawn, the development of the eggs, and the number of snails growing from young to adult snails were compared between the self-fertilization and cross-fertilization. The snails were in the water under four environments, all day illumination, all day without illumination, daytime lighting and night without illumination, and daytime without illumination but night lighting. The eggs were collected and counted daily. The circadian rhythm of spawn and the effect of illumination on spawn were observed. The adult snails were divided into 6 groups and exposed to the environments with relative humidity of 0, 65%, 87% and 100%, respectively. The survival rates of the adult snails exposed to the different environments after different time were observed. The adult snails were placed at 25 °C in the oven to remove water content from the soft body of snails. When the dehydration rates of the soft bodies achieved 10%, 20%, 30%, 40%, 50%, 52%, 55%, 57%, 60%, and 70% respectively, the survival rates of the adult snails exposed to the oven were observed. RESULTS: In the 25 °C water, the average laying egg number for 15 days per snail was (8.77 ± 16.92) eggs/snail in the self-fertilization snail. The average laying egg number for 15 days per snail was (149.71 ± 142.28) eggs/snail in the cross-fertilization snails. There was a significant difference between the self-fertilization snail and cross-fertilization snail (t = 0.999 999, P < 0.01). The hatching rate and reproductive maturation rate of the self-fertilization snails and cross-fertilization snails were 50.1% and 78.9%, and 19.3% and 3.8%, respectively, There was a significant difference (the hatching rate: χ2 = 18.18, P < 0.01, the reproductive maturation rate: χ2 = 11.83, P < 0.01) . In the natural environment of daytime with illumination and nighttime with darkness, the amount of laying 20 eggs of B. glabrata snail was (944.07 ± 392.53) eggs/day during a whole day, among them the amount of laying eggs during daytime account for 10.1% and the amount of laying eggs during nighttime account for 89.9%, and the laying egg was given priority to with the night. The above results suggested that the dark environment was conducive to B. glabrata snails to lay eggs. The above results suggested that light can promote the increase of spawning of B. glabrata. When B. glabrata was exposed to the environments with the relative humidity of 0, 65%, 87% and 100% at 25 °C, respectively, and the longest survival times of snails were 7, 70, 150 d and 100 d, respectively. In the 25 °C water, the snails could survive for 50 days without food. The adult snails were placed at 25 °C in the oven to remove water content from the soft body of snails. When the dehydration rates of the soft bodies achieved 10%, 20%, 30%, 40%, 50%, 52%, 55%, 57%, 60%, and 70% respectively, the survival rates of the adult snails exposed to the oven were 100%, 100%, 100%, 100%, 70%, 30%, 0, 0, 0 and 0, respectively. CONCLUSIONS: B. glabrata can achieve the reproductive process by cross-fertilization or self-fertilization. There is a significant difference in reproductive ability between the cross-fertilization snail and self-fertilization snail, cross-fertilization is stronger than self-fertilization, but the rate of reproduction in the self-fertilization is higher than that in the cross-fertilization. It is indicated that B. glabrata that survive after the dry season plays an important role in the maintenance of local snail populations and transmission of schistosomiasis mansoni.


Assuntos
Biomphalaria , Interações Hospedeiro-Parasita , Schistosoma mansoni , Animais , Biomphalaria/parasitologia , Interações Hospedeiro-Parasita/fisiologia , Estágios do Ciclo de Vida/fisiologia , Reprodução , Schistosoma mansoni/fisiologia , Esquistossomose mansoni/transmissão , Estações do Ano
15.
Dis Aquat Organ ; 136(1): 37-49, 2019 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-31575833

RESUMO

Fluctuating asymmetry (FA), defined as random deviations from perfect bilateral symmetry, is assumed to reflect developmental instability. FA is predicted to increase in response to environmental stress, including parasite infection. In addition, based on theory we predict a higher FA in sexually selected traits, due to their greater sensitivity to stress. We investigated the relationships between FA, parasitism and reproductive fitness in 2 species of gammarid crustacean, incorporating both sexual and non-sexual traits. We tested the hypothesis that gammarids infected by vertically transmitted Microsporidia will display higher levels of FA than those infected by horizontally transmitted trematodes, because vertically transmitted Microsporidia can be present at the earliest stages of host development. We found little evidence for a relationship between FA and fecundity in Gammarus spp.; however, egg diameter for infected female Gammarus duebeni was significantly smaller than uninfected female G. duebeni. FA was not correlated with brood size in females or with sperm number in males. In contrast to our prediction, we report a lower relative FA in response to sexual traits than non-sexual traits. However, FA in sexual traits was found to be higher in males than females, supporting the theory that sexual selection leads to increased FA. Additionally, we report a negative correlation between FA and both trematode (Podocotyle atomon) and PCR-positive microsporidian (Nosema granulosis and Dictyocoela duebenum) infections and interpret these results in the context of the parasites' transmission strategies. FA in G. duebeni and G. zaddachi appears to associate with trematode and microsporidian presence, although reproductive fitness is less altered by infection.


Assuntos
Anfípodes/fisiologia , Anfípodes/parasitologia , Aptidão Genética , Animais , Feminino , Interações Hospedeiro-Parasita , Masculino , Doenças Parasitárias em Animais/fisiopatologia , Doenças Parasitárias em Animais/transmissão , Reprodução
16.
Dis Aquat Organ ; 136(1): 51-62, 2019 Oct 02.
Artigo em Inglês | MEDLINE | ID: mdl-31575834

RESUMO

The Trematoda are a group of phylogenetically diverse metazoan parasites that exhibit complex life cycles that often pass through invertebrate and vertebrate hosts. Some trematodes influence their host's behaviour to benefit transmission. Their parasitic influence may impact host population size by inhibiting an individual's reproductive capacity. We assessed the impact of infection by Podocotyle atomon on the reproductive behaviour and fecundity of its amphipod intermediate host, Gammarus zaddachi, using laboratory and field studies. Parasite prevalence was high in the field, with males more likely to be infected (prevalence in males 64%, in females 39%). Males also suffered a higher parasite burden than females. Infected females were less active, but we found no evidence for a reduction in female reproductive success. Infected females also had comparable pairing success to uninfected females. In males, infection reduced survival and fecundity, with mortality being highest, and sperm numbers lowest, in heavily infected individuals. Trematode parasites are sometimes associated with altered host fecundity, but studies often lack the relevant experimental data to explore the evolution of the trait. We discuss this among information specific to the effect of P. atomon infection in G. zaddachi.


Assuntos
Anfípodes/fisiologia , Anfípodes/parasitologia , Interações Hospedeiro-Parasita , Trematódeos/patogenicidade , Animais , Feminino , Fertilidade , Masculino , Reprodução
18.
Results Probl Cell Differ ; 68: 455-475, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31598867

RESUMO

Nutritional modes operating during embryonic/larval development of viviparous species range from "pure" lecitothrophy in which embryos rely solely on reserve materials (yolk spheres, lipid droplets, and glycogen particles) accumulated in the egg cytoplasm to matrotrophy in which embryos are continuously supplied with nutrients from a parental organism. Interestingly, a wide spectrum of diverse "mixed" modes employed in the embryo nourishment have also been described among viviparous species. Here, we summarize results of histochemical, ultrastructural, and biochemical analyses of reproductive systems as well as developing embryos of two closely related viviparous species of earwigs (Dermaptera), Hemimerus talpoides and Arixenia esau. These analyses clearly indicate that morphological as well as physiological modifications (adaptations) supporting viviparity and matrotrophy in Hemimerus and Arixenia, with the exception of a complex biphasic respiration, are markedly different. Most importantly, Hemimerus embryos complete their development inside terminal (largest) ovarian follicles, whereas Arixenia embryos, after initial developmental stages, are transferred to highly modified lateral oviducts, that is the uterus, where they develop until the release (birth) of larvae. The obtained results strongly suggest that viviparity in hemimerids and arixeniids had evolved independently and might therefore serve as an example of evolutionary parallelism as well as remarkable functional plasticity of insect reproduction and embryonic development.


Assuntos
Evolução Biológica , Desenvolvimento Embrionário , Neópteros/embriologia , Neópteros/fisiologia , Folículo Ovariano/fisiologia , Oviductos/fisiologia , Reprodução/fisiologia , Viviparidade não Mamífera/fisiologia , Animais , Feminino , Larva , Neópteros/anatomia & histologia
19.
Se Pu ; 37(9): 925-931, 2019 Sep 08.
Artigo em Chinês | MEDLINE | ID: mdl-31642295

RESUMO

Reproduction is one of the most basic characteristics of organisms, and the guarantee of the continuation and evolution of a species. As the country with world's largest population, China has been gradually increasing its investment in research on the reproductive system in recent years, particularly in the field of basic research. The rapid development and wide application of the microfluidic technology since its birth are sufficient to explain its application prospect. Currently, infertility and birth defects are major problems in the field of reproduction. Micro-reproductive technologies, including microfluidic and organs-on-chips, are formed through the combination of a wide range of basic science and bioengineering technologies. In reproductive research, microfluidic technology display several advantages:flexible design of the microchannel shape and size to better simulate the physiological environment, the low consumption of microfluidic chip, and highly integrated microfluidic technology. Microfluidic technology has been applied to various processes including sperm vitality evaluation and screening, sperm chemotaxis, cumulus oophorus cell removal, zona pellucida removal, ootid localization and screening, fertilization, early embryo culture and reproductive organ simulation. This paper introduces the recent progress in reproductive research based on microfluidic technology and its application prospects.


Assuntos
Microfluídica/tendências , Reprodução , Técnicas Reprodutivas/tendências , Humanos
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