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ParthenogenesisTaraxacumBoidaeWolbachiaDaphniaApomixisAntsReproductionRanunculaceaeDiploidyReproduction, AsexualRotiferaWaspsMicrosatellite RepeatsAphidsMeiosisRanunculusOvumInsectsSex Determination AnalysisRickettsiaceaeSymbiosisOocytesFertilizationNuclear Transfer TechniquesSex Determination ProcessesSex RatioBiological EvolutionPolyploidyPhylogenyPloidiesHeterozygoteChromosomesHomozygoteSexual Behavior, AnimalBlastocystGenetic VariationSpermatozoa
Facultative parthenogenesisAsexual reproductionAutomictic parthenogenesisArrhenotokyInduce parthenogenesisSperm2023ApomicticOccursMeiosisZygoteAphidsGeneticsOrganismPaternityReproductiveMother'sEggsMalesSharksGallsParthenogeneticAquariumSpecies reproduceReproductionCrayfishAbstractWolbachiaMaleSharkEmbryoSexuallyNaturallyPlantsComparisonsExamplesReptilesAdultCommonAquaticPopulationCaseTypeIndividualsPaperVarious formsStory
Facultative parthenogenesis6
  • This is called facultative parthenogenesis (other terms are cyclical parthenogenesis, heterogamy or heterogony). (wikipedia.org)
  • In California Condors facultative parthenogenesis can occur even when a male is present and available for a female to breed with. (wikipedia.org)
  • Facultative parthenogenesis (FP) is widespread in the animal kingdom. (vu.nl)
  • They found DNA sequences showing it was a result of facultative parthenogenesis (FP), or reproduction without the genetic contribution of males. (ctvnews.ca)
  • We provide experimental evidence that females of one cambarid species particularly widespread in Europe, the spiny-cheek crayfish Orconectes limosus, are capable of facultative parthenogenesis. (cyberleninka.org)
  • Citation: Buric M, Hulak M, Kouba A, Petrusek A, Kozak P (2011) A Successful Crayfish Invader Is Capable of Facultative Parthenogenesis: A Novel Reproductive Mode in Decapod Crustaceans. (cyberleninka.org)
Asexual reproduction6
Automictic parthenogenesis2
Arrhenotoky1
Induce parthenogenesis2
  • This puzzling observation led us to hypothesize that the molecular sex-determination mechanism of the haplodiploid host may be a constraining factor in the ability of endosymbionts to induce parthenogenesis. (wur.nl)
  • These range from classical mutualism to reproductive parasitism as characterized by the ability of Wolbachia to override chromosomal sex determination, induce parthenogenesis, selectively kill males, influence sperm competition and generate cytoplasmic incompatibility in early embryos. (gnxp.com)
Sperm4
  • In algae, parthenogenesis can mean the development of an embryo from either an individual sperm or an individual egg. (wikipedia.org)
  • Rather than combining an egg with sperm, this form of reproduction uses a polar body - a byproduct of germ cells that undergo meiosis to produce eggs. (kclu.org)
  • When a shark undergoes parthenogenesis, "one of the polar bodies that should have been absorbed under normal circumstances of sexual reproduction didn't get reabsorbed and actually acted like a sperm and fused with the cell that was actually going to become an egg," as shark expert Mahmood Shivji told NPR about those earlier cases, back in 2007 . (kclu.org)
  • Sperm are male gametes formed by the testes. (leverageedu.com)
20231
  • Verhulst, EC , Pannebakker, BA & Geuverink, E 2023, ' Variation in sex determination mechanisms may constrain parthenogenesis-induction by endosymbionts in haplodiploid systems ', Current Opinion in Insect Science , vol. 56, 101023. (wur.nl)
Apomictic3
Occurs4
Meiosis7
Zygote3
  • Throughout the great range of sizes, many animal species reproduce through a sexual interaction between male and female partners in which one set of chromosomes from each parent fuse to form a zygote that develops into a new individual. (newworldencyclopedia.org)
  • These gonads contain gametes, which combine together to form the zygote, a single cell. (leverageedu.com)
  • As a result, a zygote is formed. (leverageedu.com)
Aphids1
  • We also identified a gene family with a very high expression level (copies totaling nearly 10 % of the reads) in the grapevine phylloxera (both in root and leaf galling forms), but usually expressed at very low levels in true aphids (except in sexual oviparous females). (biomedcentral.com)
Genetics1
Organism1
  • No other organism is known to form galls on sweet chestnut trees, so the presence of galls on them is an obvious and reliable symptom of OCGW infestation. (forestresearch.gov.uk)
Paternity2
  • The DNA-fingerprinting techniques used to prove both cases of virgin birth (scientifically known as 'parthenogenesis' ) are identical to those used in human paternity testing. (science20.com)
  • Multiple paternity, coupled with a lack of parthenogenesis, which was also demonstrated herein, may help to account for the high degree of genetic diversity evidenced in this species. (who.int)
Reproductive2
  • God the Son enfleshed Himself--the Holy Spirit bringing about conception, parthenogenesis, the virgin beginning--without the intervention of the normal reproductive cycle of man. (cbn.com)
  • Other developmental and reproductive variations include haplodiploidy, polymorphism, paedomorphosis or peramorphosis, sexual dimorphism, parthenogenesis and more rarely hermaphroditism. (parrot.org)
Mother's2
  • In some types of parthenogenesis the offspring having all of the mother's genetic material are called full clones and those having only half are called half clones. (wikipedia.org)
  • The newborn shark derived from this phenomenon would have only half the genetic diversity of the sexually reproduced form because it is based entirely on the mother's genome," said Dr. Grogan. (sciencedaily.com)
Eggs4
  • Parthenogenesis is a process in which eggs become embryos without male fertilization. (uncommondescent.com)
  • A common form of sex-determination in Hymenoptera and some other invertebrates, in which progeny are produced by mated or unmated females, but fertilized eggs produce diploid female offspring whereas unfertilized eggs produce haploid male offspring by parthenogenesis (only the females are biparental). (ufl.edu)
  • This specialized form of reproduction produces resting eggs that allow certain species to survive harsh conditions (periods of overcrowding, adverse temperatures, or scarce food) and disperse into distant habitats. (encyclopediaofarkansas.net)
  • This form of reproduction, where females do not require fertilization by males to produce fertile eggs is called parthenogenesis. (osu.edu)
Males1
  • The switch between sexuality and parthenogenesis in such species may be triggered by the season (aphid, some gall wasps), or by a lack of males or by conditions that favour rapid population growth (rotifers and cladocerans like Daphnia). (wikipedia.org)
Sharks5
  • A shark evolution expert discusses recent parthenogenesis findings in female sharks in captivity. (sciencedaily.com)
  • A recent report from a team of American and Irish researchers has concluded that the mysterious appearance in 2001 of an infant female bonnethead shark at Omaha's Henry Doorly Zoo in a tank that held only two adult female sharks was the result of parthenogenesis (Gr. virgin birth. (sciencedaily.com)
  • Parthenogenesis appears to be a rare phenomenon in sharks, and it is unlikely to have an impact on the evolution of a particular lineage," said Saint Joseph's University Professor of Biology Eileen Grogan, Ph.D., a noted expert in shark evolution and research associate at both the Academy of Natural Sciences and the Carnegie Museum of Natural History. (sciencedaily.com)
  • The finding of parthenogenesis in blacktip sharks, which are close relatives of some of the larger predatory sharks in the ocean including the tiger, bull and dusky sharks, raises intriguing questions about how frequently parthenogenesis may occur in the wild in this group of heavily fished sharks," said Shivji. (science20.com)
  • It is possible that parthenogenesis could become more common in these sharks if population densities become so low that females have trouble finding mates. (science20.com)
Galls3
  • Horned oak galls are formed under the direction of the gall-wasp, Callirhytis cornigera (Family Cynipidae). (osu.edu)
  • Transcriptomic data could help understand the bases of its original life-traits, including a striking case of polyphenism, with forms feeding on roots and forms feeding in leaf-galls. (biomedcentral.com)
  • OCGW is a pest of sweet chestnut trees because activity by its larvae (the 'grubs', or immature life stage) causes abnormal growths, called galls, to form on the buds, leaves and petioles (leaf stalks). (forestresearch.gov.uk)
Parthenogenetic2
  • We draw attention to the remarkable similarities between the evolution of parthenogenesis in Warramaba and Sipyloidea and analyse the geographic distributions of parthenogenetic and sexual forms with respect to six climatic variables. (evolutionary-ecology.com)
  • To understand the molecular mechanisms underlying the failure of parthenogenesis at early stages of development, we performed global gene expression profiling and functional analysis of parthenogenetic blastocysts in comparison with those of blastocysts from normally fertilized embryos. (prinsesmaximacentrum.nl)
Aquarium1
Species reproduce2
Reproduction5
Crayfish2
  • In another part of the study, a scientist in Madagascar additionally examined how well the crayfish is able to spread in the wild via parthenogenesis. (dkfz.de)
  • Further research is needed to clarify what environmental conditions are necessary for a switch to parthenogenesis in O. limosus, and what role it plays in natural crayfish populations. (cyberleninka.org)
Abstract1
Wolbachia2
  • have suggested that R. felis is responsible for inducing parthenogenesis in book lice, similar to the manner of Wolbachia organisms in various invertebrate hosts ( 9 ). (cdc.gov)
  • Wolbachia are gram-negative bacteria that form intracellular inherited infections in many invertebrates. (gnxp.com)
Male2
  • While parthenogenesis can ensure the short-term survival of the species, for the long term it is advantageous to keep male DNA in the mix. (sciencedaily.com)
  • The different forms of the male (top) and female (bottom) tussock moth Orgyia recens is an example of sexual dimorphism in insects. (parrot.org)
Shark2
  • An epaulette shark pup that hatched from an apparent parthenogenesis is now on display at Brookfield Zoo, in a Chicago suburb. (kclu.org)
  • The new paper is entitled 'Parthenogenesis in a large-bodied requiem shark, the blacktip Carcharhinus limbatus. (science20.com)
Embryo1
Sexually1
  • Some species can produce both sexually and through parthenogenesis, and offspring in the same clutch of a species of tropical lizard can be a mix of sexually produced offspring and parthenogenically produced offspring. (wikipedia.org)
Naturally1
  • If you are writing about a person, it helps if the name of the person you are writing about is naturally in the form of a double dactyl. (everything2.com)
Plants3
  • In plants, parthenogenesis is a component process of apomixis. (wikipedia.org)
  • The botanical term "Angiosperm" was coined in the form Angiospermae by Paul Hermann in 1690 , as the name of that one of his primary divisions of the plant kingdom, which included flowering plants possessing seeds enclosed in capsules, in contradistinction to his Gymnospermae, or flowering plants with achenial or schizo-carpic fruits?the whole fruit or each of its pieces being here regarded as a seed and naked. (academickids.com)
  • Fossil plants with some identifiable angiosperm characteristics appear in the Jurassic and early Cretaceous (135-65 million years ago), but in relatively few and primitive forms. (academickids.com)
Comparisons1
Examples1
  • The rules for double dactyls can be overwhelming if you aren't already familiar with the form, so let's take a look at three examples before listing the rules outright. (everything2.com)
Reptiles1
  • Parthenogenesis is well documented in insects and reptiles, and it's been seen in birds and fish. (kclu.org)
Adult1
Common1
  • We propose that the hybridization events leading to parthenogenesis in these diverse taxa were driven by a common biogeographic process - that is, by range shifts associated with changes in aridity during the late Pleistocene. (evolutionary-ecology.com)
Aquatic1
  • such aquatic Angiosperms are not, however, primitive forms, but are derived from immediate land-ancestors. (academickids.com)
Population1
  • A form of inoculative biological control in which specialist natural enemies are imported from the supposed homeland of an adventive pest, and released in small numbers in attempt to establish a permanent population. (ufl.edu)
Case1
  • Here, we addressed these questions through the application of next-generation sequencing to investigate a suspected case of parthenogenesis in a king cobra (Ophiophagus hannah). (vu.nl)
Type1
  • Parthenogenesis-induction (PI) is the most effective type of manipulation for transmission, but has solely been detected in haplodiploid species, whereas cytoplasmic incompatibility (CI) is detected frequently across the arthropod phylum, including haplodiploids. (wur.nl)
Individuals1
  • Different rotifer species display a striking variety of body forms and the morphology of individuals may be further altered (e.g, by growth of spines) in response to ecological cues indicating the presence in the environment of particular types of prey or predators (Wallace and Snell 2001 and references therein). (eol.org)
Paper1
Various forms1
Story1