The team found that freshly collected semen was effective in fertilizing eggs in 27.6% of cases; semen that had been cold-stored for 24 or 48 hours had 28.1% and 7.1% success rates, respectively.
SharkoFiles: Bamboo Shark
The bamboo sharks are an extremely rare type of shark characterized by the long distinctive snout. The total length of the bamboo shark fish does not exceed four feet. They are sometimes called longtail carpet sharks due to their long cylindrical bodies with tails longer than their bodies. Most of the sharks in this family […]
Genome sequencing could unlock secrets of shark evolution
Because of their slow rate of evolution, researchers are able to look at a shark’s DNA as a sort of “living fossil,” according to a new study by the RIKEN Center for Biosystems Dynamics Research in Japan. Scientists, led by Riken’s Shigehiro Kuraku, analyzed shark genomes using cutting-edge DNA sequencing technologies and comparative bioinformatics on three species […]