Results 21 to 30 of about 28,232 (129)

Aneuploidy during development in facultative parthenogenetic Drosophila. [PDF]

Heredity (Edinb), 2023
From concatenated chromosomes to polyploidization, large-scale genome changes are known to occur in parthenogenetic animals. Here, we report mosaic aneuploidy in larval brains of facultatively parthenogenetic Drosophila.
Sperling AL, Glover DM.
europepmc   +7 more sources

Mechanism of facultative parthenogenesis in the ant Platythyrea punctata

Evolutionary Ecology, 2010
Thelytokous parthenogenesis, the production of diploid female offspring from unfertilized eggs, can be caused by several cytological mechanisms, which have a different impact on the genetic variation on the offspring. The ponerine ant Platythyrea punctata is widely distributed throughout the Caribbean Islands and Central America and exhibits ...
Katrin Kellner, Jürgen Heinze
openaire   +2 more sources

Is facultative sex the best of both worlds in the parasitoid wasp Lysiphlebus fabarum? [PDF]

Royal Society Open Science
The prevalence of sexual reproduction has long puzzled evolutionary biologists. This is because asexual parthenogenesis is a more efficient mode of reproduction, and all-else-being-equal, should predominate over sex.
Rebecca A Boulton
doaj   +2 more sources

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

Scientific 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, Arianna Meletiadis, Simona Sciuto, Marino Prearo, Flavio Gagliardi, Ilaria Corrias, Angela Pira, Alessandro Dondo, Paolo Briguglio, Claudio Ghittino, Daniele Dedola, Elena Bozzetta, Pier Luigi Acutis, Paolo Pastorino, Silvia Colussi   +14 more
doaj   +2 more sources

Parthenogenesis in dipterans: a genetic perspective [PDF]

, 2023
Parthenogenesis has been documented in almost every phylum of animals, and yet this phenomenon is largely understudied. It has particular importance in dipterans since some parthenogenetic species are also disease vectors and agricultural pests. Here, we

core   +18 more sources

Does ecology shape geographical parthenogenesis? Evidence from the facultatively parthenogenetic stick insect Megacrania batesii [PDF]

Ecology and Evolution
Closely related sexual and parthenogenetic species often show distinct distribution patterns, known as geographical parthenogenesis. Similar patterns, characterized by the existence of separate sexual and parthenogenetic populations across their natural ...
Soleille Miller, Daniela Wilner, Jigmidmaa Boldbaatar, Russell Bonduriansky   +3 more
doaj   +2 more sources

Reproductive Transitions and Sperm Utilisation in a Facultatively Parthenogenetic Stick Insect [PDF]

Ecology and Evolution
Facultative parthenogenesis enables females to switch from asexual (parthenogenetic) to sexual reproduction after mating, but the process of fertilisation is poorly understood in such animals. In particular, it is not known whether switching reproductive
Jigmidmaa Boldbaatar, Pietro Pollo, Daniela Wilner, Nathan W. Burke, Russell Bonduriansky   +4 more
doaj   +2 more sources

Flower traits and breeding system of Rhododendron platypodum diels, an endangered plant species in China. [PDF]

PLoS ONE
Rhododendron platypodum Diels is an endangered ornamental plant distributed in the high-elevation subtropical regions of China. Known as one of the "queen flower", its population is restricted to three sites in China, with only few individuals.
Chaoying Wang, Yingzan Xie, Lihui Ma
doaj   +2 more sources

Costs of parthenogenesis on growth and longevity in ex situ zebra sharks Stegostoma tigrinum

Endangered Species Research, 2023
The zebra shark Stegostoma tigrinum, a popular aquarium fish, is an endangered species that is known to readily reproduce both sexually and through facultative parthenogenesis while in human care.
L Adams, K Lyons, J Monday, E Larkin, J Wyffels   +4 more
doaj   +1 more source

Notes on court and copula, fertility, nest, eggs and hatchlings of the Caatinga’s black snake Boiruna sertaneja Zaher, 1996 (Serpentes: Dipsadidae) from northeastern Brazil [PDF]

Anais da Academia Brasileira de Ciências, 2020
The Caatinga’s black snake Boiruna sertaneja is a Pseudoboini species, endemic of the Caatinga biome. It is rare and fits in five traits that suggest it deserve more attention in reproduction research and conservation policies.
THAÍS GUEDES, ABIMAEL GUEDES
doaj   +1 more source