offspring

Tag archives for offspring

Answer: pregnancy. Unlike most animals, it is the male seahorses that give birth to live young. A new study conducted at the University of Sydney and published in Molecular Biology and Evolution, found that the male seahorses not only carry out the pregnancy, they also supply nutrients to the developing embryos, including fats and calcium. The researchers suspect…

Studies of guppies show that bigger brains may mean “smarter” fish, but less offspring. Credit: Marrabbio2/Creative Commons   …at least for guppies. Dr. Alexander Kotrschal and colleagues at Uppsala University (Sweden) either shrank or grew the brains of guppies over multiple generations to create animals with up to 8-10% variations in brain size. To test for “smartness” they had…