Results 41 to 50 of about 9,549 (214)

“Jack‐of‐all‐trades” is parthenogenetic

open access: yesEcology and Evolution, 2022
Sex is evolutionarily more costly than parthenogenesis, evolutionary ecologists therefore wonder why sex is much more frequent than parthenogenesis in the majority of animal lineages. Intriguingly, parthenogenetic individuals and species are as common as
Mark Maraun   +8 more
doaj   +1 more source

Cytology of Asexual Animals

open access: yes, 2009
We review the cytological mechanisms underlying asexual reproduction, i.e. reproduction without fertilization, in animals. Asexuality or parthenogenesis has evolved many times and the cytological mechanisms to restore the parental chromosome number can ...
Stenberg, Per,   +3 more
core   +1 more source

Parthenogenesis. [PDF]

open access: yesFolklore, 1918
n ...
openaire   +1 more source

Loss, persistence and reversal of phenotypic traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni   +4 more
wiley   +1 more source

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

Opportunities and Challenges in Doubled Haploids and Haploid Inducer-Mediated Genome-Editing Systems in Cucurbits

open access: yesAgronomy, 2020
Doubled haploids have played a major role in cucurbit breeding for the past four decades. In situ parthenogenesis via irradiated pollen is the preferred technique to obtain haploid plantlets whose chromosomes are then doubled in Cucurbitaceae, such as ...
Isidre Hooghvorst, Salvador Nogués
doaj   +1 more source

Aphid alarm pheromone (E)‐β‐farnesene: mechanisms, applications, and challenges in pest management

open access: yesNew Plant Protection, EarlyView.
This review highlights the advances in the application of the aphid alarm pheromone (E)‐β‐farnesene (EβF) for pest management. It focuses on smart delivery systems, molecular optimization, synthetic biology, and integration with digital agriculture. Additionally, it discusses key challenges and future directions for enhancing stability, field efficacy,
Yi Yan   +3 more
wiley   +1 more source

Plant and insect functional traits influence herbivore performance under climate change

open access: yesOikos, EarlyView.
Climate change is expected to disrupt many trophic interactions, including those between insect herbivores and their host plants, which could have detrimental effects at the ecosystem level. However, the response of insect herbivory to climate change can vary widely across species, and an understanding of the mechanisms underlying this variation is ...
Jessica M. Guezen, Madhur Anand
wiley   +1 more source

Reproduction of Earthworms: Sexual Selection and Parthenogenesis

open access: yes, 2011
Earthworms are generally cross-fertilization hermaphrodites, but up to 40% of the species can be parthenogenetic. In simultaneous hermaphrodites, a trade-off between male and female sexual functions is expected because the two sexes share limited ...
Rosa Fernández   +2 more
core   +1 more source

First report of recurrent parthenogenesis as an adaptive reproductive strategy in the endangered common smooth-hound shark Mustelus mustelus

open access: yesScientific Reports
Parthenogenesis, or virgin birth, describes a mode of reproduction where an egg develops into an offspring without fertilization, and is observed across various vertebrate taxa, excluding mammals.
Giuseppe Esposito   +14 more
doaj   +1 more source

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