Results 71 to 80 of about 7,646 (204)

Prolactin: The Hypophyseal Factor That Terminates Embryonic Diapause in Mink [PDF]

Biology of Reproduction, 1981
The purpose of this experiment was to determine whether prolactin (PRL) is the factor that activates the quiescent corpus luteum (CL) and terminates the delay that precedes implantation in mink. Animals were hypophysectomized or sham-hypophysectomized 6 days after the second of two matings.
B D, Murphy, P W, Concannon, H F, Travis, W, Hansel   +3 more
openaire   +2 more sources

Silencing of juvenile hormone‐related genes through RNA interference leads to molt failure and high mortality in the spongy moth

Insect Science, EarlyView.
The feasibility of using RNA interference to control the globally important quarantine pest, the spongy moth. Targeting genes related to JHs play an important role in the growth and development of insects. First, the open reading frames (ORFs) of Ldjhamt and Ldjheh were identified and characterized, and the target genes were cloned and double‐stranded ...
Wenzhuai Ji, Qing Xie, Xiaoxiao Chang, Juan Shi   +3 more
wiley   +1 more source

Development of a dynamic population model as a decision support system for Codling Moth (Cydia pomonella L) management [PDF]

, 2008
In 2004 RIMpro-Cydia was developed as a dynamic population model that simulates the within-year biology of a local codling moth population. The model is meant to be used by growers and advisors to optimize the control of codling moth populations in ...
Helsen, H., Polfliet, M., Trapman, M.
core   +1 more source

DsiRNA‐mediated silencing of Ceratitis capitata transformer or transformer‐2 leads to masculinization of XX embryos and systemic gene silencing in ovaries

Insect Science, EarlyView.
We carried out functional studies using Dicer‐substrate small interfering RNAs (DsiRNAs), targeting the sex determination genes Cctransformer (Cctra) and Cctransformer‐2 (Cctra‐2) in the Mediterranean fruit fly (Ceratitis capitata). Microinjection of DsiRNAs into XX embryos (0‐1 h old) rapidly triggered the expression of male‐specific Cctra isoforms ...
Gennaro Volpe, Sarah Maria Mazzucchiello, Domenico De Falco, David Torrente, Stefania Liguori, Noemi Rosati, Dora Baccaro, Michela Mazzeo, Fulvio Bertolotto, Harshini Sangle, Ennio Giordano, Angela Carfora, Francesca Lucibelli, Marianna Varone, Paola Di Lillo, Hugo Diego Perdomo, Mariangela Bonizzoni, Serena Aceto, Marco Salvemini, Molly Duman‐Scheel, Giuseppe Saccone   +20 more
wiley   +1 more source

Cell cycle dynamics during diapause entry and exit in an annual killifish revealed by FUCCI technology

EvoDevo, 2019
Background Annual killifishes are adapted to surviving and reproducing over alternating dry and wet seasons. During the dry season, all adults die and desiccation-resistant embryos remain encased in dry mud for months or years in a state of diapause ...
Luca Dolfi, Roberto Ripa, Adam Antebi, Dario Riccardo Valenzano, Alessandro Cellerino   +4 more
doaj   +1 more source

Can Fecal T3 Metabolite Level Fluctuations in European Roe Deer (Capreolus capreolus) Give Insights on Body Condition and Thermal Stress?

Integrative Zoology, EarlyView.
European roe deer fecal samples were assayed to investigate the potential fluctuations of fecal thyroid hormone metabolites (FTMs) in response to environmental (e.g., the temperature, local densities) and individual (e.g., sex, age, body, and nutritional conditions) variables.
Valeria Pasciu, Roberta Chirichella, Francesca D. Sotgiu, Maria Nieddu, Elena Baralla, Marco Apollonio, Fiammetta Berlinguer   +6 more
wiley   +1 more source

Genetic Deletion of Hesx1 Promotes Exit from the Pluripotent State and Impairs Developmental Diapause

Stem Cell Reports, 2019
Summary: The role of the homeobox transcriptional repressor HESX1 in embryonic stem cells (ESCs) remains mostly unknown. Here, we show that Hesx1 is expressed in the preimplantation mouse embryo, where it is required during developmental diapause ...
Sara Pozzi, Sarah Bowling, John Apps, Joshua M. Brickman, Tristan A. Rodriguez, Juan Pedro Martinez-Barbera   +5 more
doaj   +1 more source

Embryonic developmental arrest in the annual killifish Austrolebias charrua: A proteomic approach to diapause III.

PLoS ONE, 2021
Diapause is a reversible developmental arrest faced by many organisms in harsh environments. Annual killifish present this mechanism in three possible stages of development. Killifish are freshwater teleosts from Africa and America that live in ephemeral
Cora Chalar, Graciela Clivio, Jimena Montagne, Alicia Costábile, Analía Lima, Nicolás G Papa, Nibia Berois, María José Arezo   +7 more
doaj   +1 more source

Gypsy moths and American dog ticks: Space partners [PDF]

, 1984
An experiment intended for the space shuttle and designed to investigate the effects of weightlessness and total darkness on gypsy moth eggs and engorged American dog ticks is described.
Goans, M. D., Hayes, D. K., Morgan, N. O., Webb, R. E.   +3 more
core   +1 more source

Genome wide gene-expression analysis of facultative reproductive diapause in the two-spotted spider mite Tetranychus urticae [PDF]

, 2013
Background: Diapause or developmental arrest, is one of the major adaptations that allows mites and insects to survive unfavorable conditions. Diapause evokes a number of physiological, morphological and molecular modifications.
Bryon, Astrid, Dermauw, Wannes, Tirry, Luc, Van Leeuwen, Thomas, Wybouw, Nicky   +4 more
core   +2 more sources