For the giant Australian cuttlefish, mating is a complicated undertaking complete with fighting, sneaking, and deception. In this week’s issue of the journal Nature, Marine Biological Laboratory (MBL) senior scientist Roger Hanlon and his colleagues demonstrate that for this species, deception while mating pays off.
Hanlon and his team present behavioral and genetic data demonstrating that small male cuttlefish that dramatically alter their appearance to look like females are highly successful in tricking their often larger male competitors and fertilizing the female’s eggs. While the sexual mimicry that the cuttlefish employ has been widely reported in nature, this is the first time fertilization success in an animal using this strategy has been documented.
Hanlon and his colleagues studied the cuttlefish (Sepia apama) in a remote coastal area of the Australian outback. For ten days they painstakingly observed and filmed the intense mating competition between the females and their suitors, including large “guard” males, smaller “sneaker” males, who attempt to mate with females as the guard fights other males, and males who mimic the appearance of a female. In contrast to some other animals, whose ability to mimic is part of their genetic makeup, giant Australian cuttlefish use neural control to instantly change their skin patterning, posture, and tactics. According to Hanlon the cuttlefish can switch between a male and female appearance 10 to 15 times per minute. “In the blink of an eye they can pull out of it and go back to being a male,” he says.
Gina Hebert | EurekAlert!
Climate Impact Research in Hannover: Small Plants against Large Waves
17.08.2018 | Leibniz Universität Hannover
First transcription atlas of all wheat genes expands prospects for research and cultivation
17.08.2018 | Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
17.08.2018 | Physics and Astronomy
17.08.2018 | Information Technology
17.08.2018 | Life Sciences