BlogArena

General blog about anything and everything of everyday's life.

24. May 2019

July 17, 2013
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Pistil leads pollen in life-and-death dance

Pollination, essential to much of life on earth, requires the explosive death of the male pollen tube in the female ovule. In new research, Brown University scientists describe the genetic and regulatory factors that compel the male’s role in the … Continue reading

May 25, 2013
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Easy come, easy grow

Sperm cell release can be triggered by tightening the grip around the delivery organ, according to a team of nano and microsystems engineers and plant biologists at the University of Montreal and Concordia University. Concordia’s nanobiotech team devised a microchip … Continue reading

April 30, 2013
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UCLA researchers discover sperm move along a ‘twisting ribbon’

Opening the door to more sophisticated investigation of sperm locomotion and biophysics, researchers from UCLA’s Henry Samueli School of Engineering and Applied Science have identified previously unobserved swimming patterns in human and horse sperm cells. This research, published in Scientific … Continue reading

November 3, 2012
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NASA Maps How Nutrients Affect Plant Productivity

PASADENA, Calif. – A new analysis led by NASA’s Jet Propulsion Laboratory, Pasadena, Calif., has estimated how much the growth of plants worldwide is limited by the amount of nutrients available in their soil. The maps produced from the research … Continue reading

May 23, 2012
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Pollination with Precision: How Flowers Do It

Pollination could be a chaotic disaster. With hundreds of pollen grains growing long tubes to ovules to deliver their sperm to female gametes, how can a flower ensure that exactly two fertile sperm reach every ovule? In a new study, … Continue reading

May 17, 2012
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Counting Horseshoe Crabs

Marine science majors conduct field research with horseshoe crab census Wearing sneakers and rain boots, University of Delaware freshmen got their feet wet as marine biologists recently while counting horseshoe crabs along the Delaware Bay. The students participated in a … Continue reading

May 12, 2012
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Insect Glands May Illuminate Human Fertilization Process

Baltimore, MD — Insect glands are responsible for producing a host of secretions that allow bees to sting and ants to lay down trails to and from their nests. New research from Carnegie scientists focuses on secretions from glands in … Continue reading

February 6, 2012
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A Bug’s (Sex) Life: Diving Beetles Offer Clues About Sexual Selection

*Studies of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs, challenging the paradigm of post-mating sexual selection being driven mostly by competition among sperm.* Studying female reproductive tracts and sperm in diving beetles (Dytiscidae), … Continue reading