Results 41 to 50 of about 12,578 (176)

Drosophila melanogaster mutant tan [PDF]

open access: yes, 2009
Drosophila melanogaster gene tan was originally discovered in the early 20th century as a mutant strain lacking the dark pi gment pattern of wild-type (wt) f lies and, therefore, showing a light yellowish brown color (McEwen, 1918 ...
Badaracco, Alejandra   +2 more
core  

Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley   +1 more source

A physiological investigation of the adaptive significance of juvenility in Pennantia corymbosa Forst : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Botany at Massey University [PDF]

open access: yes, 1978
The responses of the juvenile and adult growth forms of Pennantia corymbosa Forst. to a range of light intensities, leaf temperatures, shoot water potentials and wind velocities were investigated.
Hollows, David Grant
core  

How vulnerable are amphibians to climate change? A mechanistic perspective

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Amphibians are frequently identified as highly vulnerable to climate change, yet the mechanisms driving this sensitivity remain uncertain. Approaches that explicitly link physiological mechanisms to environmental variation provide powerful tools for forecasting climate ...
Eric A. Riddell   +2 more
wiley   +1 more source

Genetic differentiation and adaptive evolution of buff‐tailed bumblebees in Asia

open access: yesInsect Science, EarlyView.
This study investigates the genetic differentiation and local adaptation of the buff‐tailed bumblebee (Bombus terrestris) across its European and Asian populations. Using whole‐genome resequencing, we identified distinct genetic differences between populations, with Asian B. terrestris representing a unique genetic resource.
Long Su   +14 more
wiley   +1 more source

Morphology and histology of the uropygial gland in Antarctic birds: relationship with their contact with the aquatic environment? [PDF]

open access: yes, 2014
Fil: Chiale, María Cecilia. División Zoología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Fernández, Patricia E.. Cátedra de Patología Genera. Facultad de Ciencias Veterinarias.
Barbeito, Claudio G.   +4 more
core   +3 more sources

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

open access: yesInsect 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   +3 more
wiley   +1 more source

Y-organectomy in the crab, Scylla serrata [PDF]

open access: yes, 1982
Gabe (1953, 1956) first described the Y-organ in 58 species of Malacostraca. The Y-organ is a glandular structure of epidermal origin. It is located in the antennary/maxillary segments. The Y-organ varies in gross morphology and location in different
Paneerselvam, M, Subramoniam, T
core  

Hemipteran vectors of stylet‐borne plant viruses: Aphids lead the charge

open access: yesInsect Science, EarlyView.
Among all sap‐feeding hemipterans, aphids stand out by far as the most important vectors of noncirculative plant viruses. Compared to whiteflies and mealybugs, aphids’ highly specialized stylet anatomy and distinct feeding behaviors contribute, together with other features of their biology, to their remarkable efficiency in transmitting stylet‐borne ...
Yu Fu, Stefano Colella, Marilyne Uzest
wiley   +1 more source

Determination of reproductive activity in sea urchins [PDF]

open access: yes, 1982
The most widely used quantitative method for assessing the reproductive activity is the gonad index (Giese and Pearse, 1974). But, in species such as sea urchins possessing considerable quantities of nutritive tissues in the gonad, both an increase ...
Vivek Raja, P
core  

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