Homosexual Fish More Attractive to Females
by Elizabeth Norton
Females of many species are attracted to large, conspicuous males. But among animals that mate with many partners, a male that manages to score with one female can increase his chances of attracting others even if he’s nothing much to look at. New research shows that, in some fish at least, smaller, less flashy males can also win female mates by flirting with larger males.
Working with the tropical freshwater fish Poecilia mexicana, researchers showed female fish video footage of small, drab-colored males “nipping” the genital openings of larger, brightly colored males—an action that precedes mating in opposite-sex fish pairs.
After witnessing this behavior, the female fish indicated their awakened interest by spending more time swimming near the images of the formerly unimpressive males, the researchers report online today in Biology Letters. The finding suggests that, far from being an evolutionary dead end, homosexual behavior can enhance a male’s ability to pass on his genes by attracting females that wouldn’t be interested in him otherwise.
(via: Science NOW) (image: David Bierbach/Univ. of Frankfurt )
New tab is completed: THE COUSTEAU CHANNEL Check it out!
“When one man, for whatever reason, has the opportunity to lead an extraordinary life, he has no right to keep it to himself”
Jacques Yves Cousteau
Okay. Elections are over and the school semester is coming to an end, so finally I have some breathing room. I am going to be creating a couple new tabs with goodies as well as theme changes:
jacque cousteau video page
Fellow ocean blogs
Other blogs I have created: Marine Conservationists United, Here to there.
Changing the Intertidal zone/beach page. (lots of new photos/neat species).
Modifying blog topics: “More original blogs less re-blogs”.
How to create change in your local community.
Oceanography textbook concepts/art/figures.
Ideas: Identifying beach types and beach parts.
New way to look at data from the ocean online!
Have you ever wondered what the water temperature off the Kamchatka Peninsula is? What about the wind speed in the Andaman Sea? Or maybe you’re losing sleep over the chlorophyll levels in the South Pacific. Fortunately, all of that information –- and 450 million other data points collected from oceanographic instruments around the world –- is freely and easily accessible thanks to the Marinexplore project.
2012 UCSB Washburn Lab, ARC Program
This is a Wave Pressure Data Logger, which is made in the UCSB Washburn lab.
This instrument detects changes in wave pressures from changing wave heights. It measures four times a second in absolute water pressure. This high sampling rat is needed to capture such intricate pressure changes in surface waves. It is powered by four D-cell Batteries, which and run up to three months. Data is stored on to a 2GB SD card.
The test button verifies the battery voltage, configuration files, recording pressure, and connections. The start and stop botton record the start and stop times of sampling.
The instrument is protected with clear PVC tubing, and rubber o-rings prevent water leakage.