Results 51 to 60 of about 28,232 (129)

A High-Density Linkage Map of the Forage Grass Eragrostis curvula and Localization of the Diplospory Locus

open access: yesFrontiers in Plant Science, 2019
Eragrostis curvula (Schrad.) Nees (weeping lovegrass) is an apomictic species native to Southern Africa that is used as forage grass in semiarid regions of Argentina.
Diego Zappacosta   +10 more
doaj   +1 more source

Genetic tests of ancient asexuality in Root Knot Nematodes reveal recent hybrid origins

open access: yesBMC Evolutionary Biology, 2008
Background The existence of "ancient asexuals", taxa that have persisted for long periods of evolutionary history without sexual recombination, is both controversial and important for our understanding of the evolution and maintenance of sexual ...
Lunt David H
doaj   +1 more source

Does Temperature Tolerance Increase in Long-Term Domesticated Frankliniella occidentalis Under Constant Temperature?

open access: yesInsects
The wide distribution of Frankliniella occidentalis is largely due to its extreme temperature adaptability. In current studies, most scholars consider environmental changes to be the main factor affecting insect temperature adaptation.
Lin Shu   +3 more
doaj   +1 more source

Data from: Molecular evidence for the first records of facultative parthenogenesis in elapid snakes.

open access: yes, 2018
Parthenogenesis is a form of asexual reproduction by which embryos develop from unfertilized eggs. Parthenogenesis occurs in reptiles, however is not yet known to occur in the widespread elapid snakes (Elapidae), which include well-known taxa such as ...
Allen, Luke   +2 more
core   +1 more source

The role of parthenogenesis in snakes

open access: yes, 2021
Parthenogenesis, or the production of embryos from unfertilized eggs, is a form of reproduction that occurs predominantly in different taxa of invertebrates where various types of such reproduction are recognized. Some animal species consist exclusively,
D'Ardes, Anna
core  

Mating System and Facultative Parthenogenesis in the Termite Reticulitermes speratus [PDF]

open access: yes, 2005
Both Social Hymenoptera (ants, bees and wasps) and Isoptera (termites) have independently evolved eusociality based on similar colony structures. In social Hymenoptera, queens found their colonies either solitarity or together with other newly mated ...
Matsuura, Kenji
core  

Parthenogenesis in birds: a review

open access: yes, 2018
Parthenogenesis or ‘virgin birth’ is embryonic development in unfertilized eggs. It is a routine means of reproduction in many invertebrates. However, even though parthenogenesis occurs naturally in even more advanced vertebrates, like birds, it is ...
R Ramachandran, C D McDaniel
core   +1 more source

Positive selection and relaxed purifying selection contribute to rapid evolution of sex-biased genes in green seaweed Ulva

open access: yesBMC Ecology and Evolution
Background The evolution of differences in gamete size and number between sexes is a cornerstone of sexual selection theories. The green macroalga Ulva, with incipient anisogamy and parthenogenetic gametes, provides a unique system to investigate ...
Xiaojie Liu   +6 more
doaj   +1 more source

Maternal Provisioning of Offspring With Defence Chemicals in a Facultatively Parthenogenetic Stick Insect

open access: yesEcology and Evolution
Parents can invest in offspring by transferring environmental factors, such as nutrients or diet‐derived defence chemicals, into eggs or embryos. However, in systems where females can reproduce facultatively without a male (facultative parthenogenesis ...
Ana Caroline Oliveira Vasconcelos   +2 more
doaj   +1 more source

The emerging phylogenetic pattern of parthenogenesis in snakes

open access: yes, 2020
Parthenogenesis occurs across a variety of vertebrate taxa. Within squamate reptiles (lizards and snakes), a group for which the largest number of cases has been documented, both obligate and facultative types of parthenogenesis exists, although the ...
Warren Booth, Gordon W Schuett
core  

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