Results 1 to 10 of about 127 (101)

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

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   +1 more source

Latitudinal trend in the reproductive mode of the pea aphid Acyrthosiphon pisum invading a wide climatic range

Ecology and Evolution, 2020
The maintenance of sexuality is a puzzling phenomenon in evolutionary biology. Many universal hypotheses have been proposed to explain the prevalence of sex despite its costs, but it has been hypothesized that sex could be also retained by lineage ...
Sebastián I. Martel, Carmen G. Ossa, Jean‐Christophe Simon, Christian C. Figueroa, Francisco Bozinovic   +4 more
doaj   +1 more source

Hatching failure in an aerial insectivore, the tree swallow Tachycineta bicolor, is driven by embryonic mortality, not infertility

Journal of Avian Biology, Volume 2026, Issue 4, July 2026.
Egg development is a crucial stage in the life cycle of birds, and across wild species up to 17% of eggs fail to hatch under normal conditions. Hatching failure is due to either infertility or embryonic mortality; however, methods to distinguish between these two causes have been underused, partly due to the assumption that eggs must be refrigerated ...
Hannah Tench, Nicola Hemmings, Russell D. Dawson   +2 more
wiley   +1 more source

Evidence That Sri Lanka Is the Origin of a Rare Nematode Resistance Gene in Rice

Plant Direct, Volume 10, Issue 7, July 2026.
ABSTRACT Meloidogyne graminicola is a destructive and widespread pest in tropical rice‐growing systems, whereas resistance in Oryza sativa remains exceptionally rare. A major quantitative trait locus (QTL) associated with resistance has previously been identified at the distal end of chromosome 11 in the resistant varieties, LD 24 (Sri Lanka) and KPM ...
S. Yashodha S. D. De Silva, Ceilan Handy, Eduard Roumen, M. L. A. M. S. Munasinghe, Adam H. Price   +4 more
wiley   +1 more source

Flowcytometric and Allozymic Studies on the Korean Dandelion (Taraxacum, Asteraceae), With Special Reference to the Hybrid Origin of Taraxacum coreanum Nakai

Plant Species Biology, Volume 41, Issue 4, July 2026.
We found that the Korean tetraploid Taraxacum coreanum (Co) shows fixed heterozygosity at two dimeric enzyme loci, sod‐1 (aaab) and mdh‐1 (bddd). Allele‐specific comparisons indicate that sod‐1 ‘a’ and mdh‐1 ‘d’ are characteristic of the triploid T. mongolicum (Mo) whereas the ‘b’ alleles at both loci match Korean diploids (e.g., T. hallaisanense, Ha).
Tatsuyoshi Morita, Mie Toyama, Fumie Yokoyama, Takako Nishino, Hiroyuki Shibaike, Motomi Ito, Jae‐Hong Pak   +6 more
wiley   +1 more source

The spread of non‐native species

Biological Reviews, Volume 101, Issue 3, Page 1197-1234, June 2026.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

Potential of the Predatory Mites Gamasellodes lavafesii (Mesostigmata: Ascidae) and Cosmolaelaps mediocuspis (Mesostigmata: Laelapidae) on Different Soil Pests/Parasites and Alternative Prey for Large‐Scale Rearing

Journal of Applied Entomology, Volume 150, Issue 5, Page 562-572, June 2026.
ABSTRACT Many species of Mesostigmata soil mites have potential as biological control agents of pests/parasites. This study evaluated the predation potential of two of these species, Gamasellodes lavafesii (Ascidae) and Cosmolaelaps mediocuspis (Laelapidae).
A. R. A. Barros, J. P. I. Martin, G. J. Moraes, M. M. Inomoto, R. C. Castilho   +4 more
wiley   +1 more source

Migration rate, timing of sex, and resident genetic diversity jointly shape effective gene flow during rotifer colonization

Limnology and Oceanography, Volume 71, Issue 5, May 2026.
Abstract Dispersal is a complex process that affects all living organisms, with the settlement phase being particularly critical. This phase depends on the interaction between the environmental conditions of the new habitat and the biological traits of both resident and immigrant populations.
Cristina Arenas‐Sánchez, Raquel Ortells, María José Carmona, Eduardo M. García‐Roger, Javier Montero‐Pau   +4 more
wiley   +1 more source

Apospory appears to accelerate onset of meiosis and sexual embryo sac formation in sorghum ovules

BMC Plant Biology, 2011
Background Genetically unreduced (2n) embryo sacs (ES) form in ovules of gametophytic apomicts, the 2n eggs of which develop into embryos parthenogenetically. In many apomicts, 2n ES form precociously during ovule development.
Elliott Estella, Jamison Michelle, Carman John G, Dwivedi Krishna K, Naumova Tamara N   +4 more
doaj   +1 more source

Geographical Divergence and Environmental Drivers of the Symbiotic Bacterial Community Structure in a Koelreuteria‐Feeding Aphid Species Complex

Ecology and Evolution, Volume 16, Issue 4, April 2026.
This study investigates the symbiotic bacteria in the Periphyllus koelreuteriae aphid species complex, revealing an inverse relationship between the dominant symbionts Buchnera and Serratia. The relative abundance of these symbionts is strongly influenced by latitude and minimum winter temperature, suggesting that heat stress drives their ...
Xin Peng, Qian Liu, Qiang Li, Xiaolei Huang   +3 more
wiley   +1 more source