Results 101 to 110 of about 19,813 (203)

Transcription Factor TCF12‐Mediated Maternal Gene Expressions in Mouse Oocyte Are Prerequisites of Successful Fertilisation and Zygotic Genome Activation

open access: yesCell Proliferation, Volume 59, Issue 3, March 2026.
Maternal TCF12 ensures the competence of fertilisation by controlling the expression of Astl and the proper location of cortical granules. Furthermore, maternal TCF12 maintains the phosphatase activity of PP2A by regulating the expression of Arpp19. Oocyte‐specific deletion of Tcf12 leads to fertilisation defects as well as ZGA failure at the 2‐cell ...
Lan‐Rui Cao   +7 more
wiley   +1 more source

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

open access: yesEcology 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   +3 more
doaj   +1 more source

Molecular identification of Fasciola spp. (Digenea: Platyhelminthes) in cattle from Vietnam

open access: yesParasite, 2012
Fasciola spp. were collected from naturally infected cattle at a local abattoir of Khanh Hoa province, Vietnam, for morphological and genetic investigations.
Nguyen S.   +5 more
doaj   +1 more source

Population Structure and Reproductive Biology of the Bait Worm Sipunculus cf. nudus in Northeastern Brazil

open access: yesMarine Ecology, Volume 47, Issue 2, March/April 2026.
ABSTRACT Sipunculans are unsegmented marine annelids distributed from intertidal to deep sediments, playing important roles in nutrient cycling and ecosystem health. The Sipunculus nudus species complex is exploited as food and bait in several regions, yet reproductive data at the population level remain scarce, especially for Atlantic populations ...
Erika Catugy   +4 more
wiley   +1 more source

Ips acuminatus (Gyllenhal) in the Czech Republic: Flight dynamics and adult population structure

open access: yesPhysiological Entomology, Volume 51, Issue 1, Page 136-146, March 2026.
Ips acuminatus exhibits a univoltine life cycle in Central Europe and no full second generation in midsummer. The sex ratio shifts from male‐biased in spring to slightly female‐biased with the season, with over 90% of females mated. Among the pheromone lures tested, the ACP was most attractive, and combining ACP and PH lures could be used for effective
Daniela Hlávková   +3 more
wiley   +1 more source

Early Progress in Aphid Genomics and Consequences for Plant–Aphid Interactions Studies

open access: yesMolecular Plant-Microbe Interactions, 2008
Aphids occupy a niche comprising two conceptual realms: a micron-scale feeding site beneath the plant surface, in which a syringe-like appendage mediates chemical exchange with a specific plant cell type; and the larger realm of a metazoan with sensory ...
Denis Tagu   +3 more
doaj   +1 more source

A draft genome for a species of Halicephalobus (Panagrolaimidae)

open access: yesJournal of Nematology, 2019
Halicephalobus is a clade of small, exclusively parthenogenic nematodes that have sometimes colonized remarkable habitats. Given their phylogenetic closeness to other parthenogenic panagrolaimid species with which they likely share a sexually reproducing
Ragsdale Erik J.   +2 more
doaj   +1 more source

parthenogenesis

open access: yes
Citation: 'parthenogenesis' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.11074 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

A glimpse of the tropics : spiders (Araneae) in the greenhouses of the Botanic Garden Berlin-Dahlem [PDF]

open access: yes, 2010
In a survey of the spider fauna in greenhouses of the Botanic Garden Berlin-Dahlem, 30 spider species were recorded. Two species are new to Europe: Theotima minutissima (Petrunkevitch, 1929) and Heteroonops spinimanus (Simon, 1891). T. minutissima is the
Kielhorn, Karl-Hinrich
core  

Geographic parthenogenesis in the Australian arid zone: II. Climatic analysis of orthopteroid insects of the genera Warramaba and Sipyloidea [PDF]

open access: yes, 2003
The Australian and zone harbours a surprising number of parthenogenetic organisms. including the well known case of the grasshopper Warramaba virgo. Less well known is the case of the stick insects of the Sipyloidea complex, which.
Kearney, Michael, Moussalli, Adnan
core  

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