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Sperm Whale Current Events | Sperm Whale News
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Unique study shows oil, gas seismic work not affecting Gulf sperm whales
Noise can be irritating and possibly harmful for everything from mice to humans - and maybe even 60-foot whales in the Gulf of Mexico. view more (2008-08-22)
How is that whale listening?
Researchers from San Diego State University and the University of California have been using computer models to mimic the effects of underwater noise on an unusual whale species and have discovered a new pathway for sound entering the head and ears. view more (2008-02-04)
Research tracks whales by listening to sounds
Researchers have developed a new tool to help them study endangered whales - autonomous hydrophones that can be deployed in the ocean to record the unique clicks, pulses and calls of different whale species. view more (2006-01-03)
Thieving whale caught on video gives rare clues about hunting strategy, sound production
For decades scientists have been intrigued by the variety of sounds emitted by sperm whales, partly due to a popular theory that suggests that the sounds might contain information about the animals' size. view more (2009-05-22)
Sporty Sperm: A Stiff One Gets the Job Done More Quickly
A scientist who studies the phsyics of sperm "as a hobby" is challenging the current understanding of how sperm swim towards an egg. At the Society for Experimental Biology conference today Dr Christopher Lowe will present the results of his modelling of a sperm`s tail, suggesting we may need to re-think our assumptions of how sperm move through... view more... (2002-04-10)
Stiff competition: size matters
Are longer sperm more successful than shorter sperm in the race for life? This is one of the questions Dr. Matthew Gage (University of East Anglia) will be addressing on Wednesday 31st March 2004 at the annual SEB meeting in Edinburgh (29th March - 2nd April 2004). Dr. Gage will present evidence that sperm speed, size and shape all matter when it... view more... (2004-03-26)
Underwater listening devices yield discoveries about endangered large whales
Why whales emit their characteristic calls remains largely a biological mystery, but listening for the distinctive underwater sounds provides a valuable way to track the movements of endangered large whales. view more (2006-01-03)
Scientists solve mystery of the 'unicorn' whale
Once the subject of mythical accounts of magical power, the helix-shaped tusk of the narwhal, or "unicorn" whale has proved to be an extraordinary sensory organ. view more (2005-12-23)
UIC biologists use DNA to study migration of threatened whale sharks
Whale sharks -- giants of the fish world that strike terror only among tiny creatures like the plankton and krill they eat -- are imperiled by over-fishing of the species in parts of its ocean range. view more (2009-04-08)
Sophisticated sexual behavior in roosters
In the animal world, it's common for females to mate with several males during one and the same reproductive period. This leads to sperm competition, that is, sperm from several different males compete to fertilize the egg at the same time. The most common response to increased sperm competition is for males to increase the number of sperm cells... view more... (2003-11-10)
Genomic imprinting in disruptive spermatogenesis (p 1700)
Low sperm counts could be associated with genomic imprinting disease and could carry a raised risk of transmitting imprinting defects following assisted reproductive technologies, claim researchers in this week's issue of THE LANCET. Genomic imprinting is a gene regulatory mechanism based on differential methylation, whereby only one of two... view more... (2004-05-19)
Dolphins get a lift from delta wing technology
We can only marvel at the way that dolphins, whales and porpoises scythe through water. Their finlike flippers seem perfectly adapted for maximum aquatic agility. view more (2009-06-26)
Protein translation in sperm
A new paper in the February 15th issue of Genes & Development lends novel insight into the cellular changes that occur in sperm while they reside in the female reproductive tract. view more (2006-02-15)
Researchers set standard for male fertility
Researchers in Leeds and the USA have developed a ‘gold standard’ for fertile sperm, in a major step towards understanding male infertility. In an article published in The Lancet, (pp772 06/09/2002) the researchers explain how they analysed genetic fingerprints from a range of sperm samples. Sperm cells have a complex genetic... view more... (2002-09-06)
Whale shark protected in new marine conservation project
Dr Callum Roberts of the Environment Department at the University of York has been awarded £130,000 by the UK Darwin Initiative fund to work with the Belize Department of Fisheries, conservation organisations and local communities on conservation strategies for migratory species such as the threatened whale shark. Many marine migratory... view more... (2000-03-09)
Mother's genes determine sperm design
A new study at the University of Sheffield, published today in Nature, has found that the size and shape of a zebra finch's sperm are genetically passed down from the mother, a fact that may also be true in humans. The paper Genetic effects on sperm design in the zebra finch, also suggests that when sperm operate in a non-competitive environment... view more... (2005-03-15)
Photo-monitoring whale sharks
Up to 20 meters long and weighing as much as 20 tons, its enormous size gives the whale shark (Rhincodon typus) its name. Known as the 'gentle giant' for its non-predatory behavior, this fish, with its broad, flattened head and minute teeth, eats tiny zooplankton, sieving them through a fine mesh of gill-rakers. view more (2007-12-26)
Quality control mechanism tags defective sperm cells inside the body
Defective sperm cells do not pass through the body unnoticed. A new University of Missouri study provides evidence that the body recognizes and tags defective sperm cells while they undergo maturation in the epididymis, a sperm storage gland attached to the testis. view more (2008-01-24)
Sperm may play leading role in spreading HIV
Sperm, and not just the fluid it bathes in, can transmit HIV to macrophages, T cells, and dendritic cells (DCs), report a team led by Ana Ceballos at the University of Buenos Aires in Argentina. view more (2009-10-26)
'The snip' may have irreversible effects on sperm
Scientists call for more research into the long-term effects of vasectomy, as results revealed today(1) suggest that the effects of 'the snip' might not be as "reversible" as previously thought. Work led by Dr Sheena Lewis at Queen's University Belfast on testicular biopsies shows that men who had a vasectomy more than 10 years ago have... view more... (2004-03-30)
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