Posts Tagged: zoology

A Simpler Way to Choose the Sex of Offspring by Separating X and Y Sperm

A Simpler Way to Choose the Sex of Offspring by Separating X and Y Sperm

Original text by PLOS Biology Differential gene activity by the two sex chromosomes allows X-bearing sperm to be slowed down Both X sperm and Y sperm swim to oocyte for fertilization. The probability to bind and penetrate to oocyte is same; however, under the specific condition, the ration of X sperm and Y sperm to reach to oocyte is changed. Credit: Gerd Altmann from Pixabay A simple, reversible chemical treatment can segregate X-bearing sperm from Y-bearing sperm, allowing dramatic alteration of the normal 50/50 male/female offspring ratio, according to a new study by Masayuki Shimada and colleagues at Hiroshima University, published on August 13 in the open-access journal PLOS Biology…. Read more

The surprising merit of giant clam feces

The surprising merit of giant clam feces

Young giant clams get necessary symbiotic algae from the feces of their parents, updating the age-old adage: one clam’s trash is another clam’s treasure.   A HU student swims alongside the giant clam Tridacna gigas. Credit: Kazuhiko Koike/ Hiroshima University Researchers may have a solution, published in PLOS One, to a mystery of how giant clams found in healthy coral reefs acquire symbiotic algae from their environment; through the feces of their parents. Coral reefs are a hotspot of biodiversity, hosting numerous species of animals and fish that help one another maintain a harmonious environment. One of these species is the giant clam. They are the biggest shellfish in the world,… Read more