Results 41 to 50 of about 1,068 (158)
Reproductive Transitions and Sperm Utilisation in a Facultatively Parthenogenetic Stick Insect. [PDF]
Ecol EvolFacultative parthenogenesis enables females to switch from asexual (parthenogenetic) to sexual reproduction after mating, but the process of fertilisation is poorly understood in such animals. It is unknown whether switching reproductive modes requires changes in the eggs themselves, delaying the transition from laying unfertilised to fertilised eggs ...
Boldbaatar J +4 more
europepmc +2 more sources
Detection of Gene Flow from Sexual to Asexual Lineages in Thrips tabaci (Thysanoptera: Thripidae). [PDF]
PLoS ONE, 2015 Populations of Thrips tabaci are known to have two sympatric but genetically isolated reproductive modes, arrhenotoky (sexual reproduction) and thelytoky (asexual reproduction).
Xiao-Wei Li +3 more
doaj +1 more source
EFSA Journal, Volume 20, Issue 2, February 2022., 2022 Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver a scientific opinion on the risk posed by bonsai plants from China consisting of Pinus parviflora grafted on Pinus thunbergii taking into account the available scientific information, including the technical information provided by China.
EFSA Panel on Plant Health (PLH) +28 more
wiley +1 more source
Peer Community Journal, 2022 Hymenopterans are haplodiploids and unlike most other Arthropods they do not possess sexual chromosomes. Sex determination typically happens via the ploidy of individuals: haploids become males and diploids become females.
Capdevielle Dulac, Claire +6 more
doaj +1 more source
Annals of Applied Biology, Volume 180, Issue 1, Page 26-43, January 2022., 2022 Symptoms of blackcurrant reversion disease: (a) malformed flowers and reverted leaves of blackcurrant; (b) brightly coloured and malformed flowers of blackcurrant; (c) bright yellow ringspots on leaf of redcurrant ‘Belka’. Abstract The production of Ribes (Rosaceae) in temperate regions in Europe, Asia and New Zealand is severely constrained by damages
Inga Moročko‐Bičevska +6 more
wiley +1 more source
Pest categorisation of Oligonychus mangiferus
EFSA Journal, Volume 19, Issue 11, November 2021., 2021 Abstract The EFSA Panel on Plant Health performed a pest categorisation of the mango red spider mite, Oligonychus mangiferus (Rahman and Sapra, 1940) (Acari: Prostigmata: Tetranychidae), for the territory of the EU. This species is not included in the EU Commission Implementing Regulation 2019/2072.
EFSA Panel on Plant Health (PLH) +22 more
wiley +1 more source
A comparative study on the functional response of Wolbachia-infected and uninfected forms of the parasitoid wasp Trichogramma brassicae [PDF]
, 2010 Trichogramma species (Hymenoptera: Trichogrammatidae) are haplo-diploid egg parasitoids that are frequently used as biological control agents against lepidopteran pests.
Allahyari, H. +4 more
core +3 more sources
Population Ecology, Volume 63, Issue 3, Page 230-237, July 2021., 2021 The proportion of females increased as temperature increased and decreased as temperature decreased. Preoviposition period, oviposition period, fecundity and adult longevity, and egg hatchability rate were reduced significantly with increasing temperature. Abstract Temperature strongly affects insect biological response.
Wondimagegn Atilaw Woldemelak +2 more
wiley +1 more source
The role of endosymbionts in the evolution of haploid-male genetic systems in scale insects (Coccoidea) [PDF]
, 2012 There is an extraordinary diversity in genetic systems across species, but this variation remains poorly understood. In part, this is because the mechanisms responsible for transitions between systems are often unknown.
Normark, Benjamin B. +3 more
core +1 more source
Commodity risk assessment of Momordica charantia fruits from Honduras
EFSA Journal, Volume 19, Issue 2, February 2021., 2021 Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. Momordica fruits originating from countries where Thrips palmi is known to occur qualify as high risk ...
EFSA Panel on Plant Health (PLH) +23 more
wiley +1 more source