Results 21 to 30 of about 217,206 (337)

Oviposition and development in the glass frog Hyalinobatrachium orientale (Anura: Centrolenidae) [PDF]

open access: yes, 2015
Oviposition and development in the glass frog Hyalinobatrachium orientale (Anura: Centrolenidae). Oviposition and external embryonic developmental features are described in the Tobago glass frog, Hyalinobatrachium orientale.
Downie, J. Roger   +2 more
core   +3 more sources

Dispersal of Phraortes illepidus (Phasmida: Phasmatidae) Eggs by Workers of the Queenless Ant, Pristomyrmex punctatus (Hymenoptera: Formicidae)

open access: yesSociobiology, 2021
Eggs of some stick insects bear external appendages called capitula. Foraging worker ants attracted by capitula disperse eggs in a response similar to the responses of workers to elaiosome-bearing seeds of many plants.
Yoshiyuki Toyama   +2 more
doaj   +1 more source

Cryopreservation of common carp sperm [PDF]

open access: yes, 2003
Experiments were carried out to investigate the effect of five extenders (sucrose, glucose, fructose, KCl and a saline carp sperm extender) and two cryoprotectants (dimethyl-sulfoxide (DMSO) and methanol) on the cryopreservation of common carp sperm ...
Horváth, Ákos   +2 more
core   +1 more source

Ionic Stress Prompts Premature Hatching of Zebrafish (Danio rerio) Embryos

open access: yesFishes, 2019
Ionic homeostasis is an essential component of functioning cells, and ionic stress imposed by excessive salinity can disrupt cellular and physiological processes.
James Ord
doaj   +1 more source

Hatching Strategies in Monogenean (Platyhelminth) Parasites that Facilitate Host Infection [PDF]

open access: yes, 2011
In parasites, environmental cues may influence hatching of eggs and enhance the success of infections. The two major endoparasitic groups of parasitic platyhelminths, cestodes (tapeworms) and digeneans (flukes), typically have high fecundity, infect more
Armstrong   +13 more
core   +1 more source

Timing of Sandeel Spawning and Hatching Off the East Coast of Scotland

open access: yesFrontiers in Marine Science, 2019
The lesser sandeel, Ammodytes marinus, is a key forage fish species in the North Sea. Mean lengths and abundances of sandeels have declined steeply since the 1990's and these are associated with declining breeding success of various seabird species on ...
Alan MacDonald   +3 more
doaj   +1 more source

Hatching Induction of Cyst Nematodes in Bare Soils Drenched With Root Exudates Under Controlled Conditions

open access: yesFrontiers in Plant Science, 2021
Cyst nematodes account for substantial annual yield losses in crop production worldwide. Concerns over environmental and health issues due to the use of chemical nematicides mean alternative sustainable and integrated solutions are urgently required ...
Bruno Ngala   +15 more
doaj   +1 more source

Effects of fluazuron on the biological parameters of engorged females of Rhipicephalus microplus

open access: yesBrazilian Journal of Veterinary Medicine, 2018
The objective of this study was to evaluate the biological parameters of Rhipicephalus microplus engorged females exposed to the arthropod growth regulator fluazuron.
Fabrício Nascimento Gaudêncio   +7 more
doaj   +1 more source

The Development of Arthropod Segmentation Across the Embryonic/Post-embryonic Divide – An Evolutionary Perspective

open access: yesFrontiers in Ecology and Evolution, 2021
In many arthropods, the appearance of new segments and their differentiation are not completed by the end of embryogenesis but continue, in different form and degree, well after hatching, in some cases up to the last post-embryonic molt.
Giuseppe Fusco, Alessandro Minelli
doaj   +1 more source

The effects of assisted hatching on the hatching process and implantation [PDF]

open access: yesHuman Reproduction, 1996
The rationale for assisted hatching Among the numerous reasons that could explain the low implantation rate of embryos used for in-vitro fertilization (IVF), an impairment of in-vivo hatching has been proposed as a possible cause of implantation failure by Cohen et aI. (1990a).
openaire   +3 more sources

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