Genomes of 20 eastern Finnish species provide unique insights into species' adaptations to local conditions - Phys.org

Appendix$$ E_{1} = \left( {\lambda k_{1}^{2} - \lambda \gamma^{2} } \right)K_{n} (k_{1} r) + \left( {2\mu k_{1}^{2} + \frac{{2\mu n^{2} }}{{r^{2} }} - \frac{2\mu n}{{r^{2} }}} \right)K_{n} (k_{1} r) + \frac{{2\mu k_{1} }}{r}K_{n + 1} (k_{1} r) $$$$ E_{2} = \left( {\frac{ - 2\mu n}{{r^{2} }} + \frac{{2\mu n^{2} }}{{r^{2} }}} \right)K_{n} (k_{2} r) - \frac{{2\mu nk_{2} }}{r}K_{n + 1} (k_{2} r) $$$$ E_{3} = \left( {2\mu \lambda k_{2}^{2} + \frac{{2\mu n^{2} \lambda }}{{r^{2} }} - \frac{2\mu n\lambda }{{r^{2} }}} \right)K_{n} (k_{2} r) + \frac{{2\mu \lambda k_{2} }}{r}K_{n + 1} (k_{2} r) $$$$ E_{4} = \left( { - \lambda k_{1}^{2} + \lambda \gamma^{2} } \right)K_{n} (k_{1} r) - \left( {2\mu k_{1}^{2} + \frac{{2\mu n^{2} }}{{r^{2} }} - \frac{2\mu n}{{r^{2} }}} \right)K_{n} (k_{1} r) - \frac{{2\mu k_{1} }}{r}K_{n + 1} (k_{1} r) $$$$ E_{5} = \left( {\frac{2\mu n}{{r^{2} }} - \frac{{2\mu n^{2} }}{{r^{2} }}} \right)K_{n} (k_{2} r) + \frac{{2\mu nk_{2} }}{r}K_{n + 1} (k_{2} r) $$$$ E_{6} = \left( { - 2\mu \lambda k_{2}^{2} - \frac{{2\mu n^{2} \lambda }}{{r^{2} }} + \frac{2\mu n\lambda }{{r^{2} }}} \right)K_{n} (k_{2} r) - \frac{{2\mu \lambda k_{2} }}{r}K_{n + 1} (k_{2} r) $$$$ E_{7} = \left(

Credit: Jeffry Madrigal. Baby manta rays escape predators by avoiding them until they grow large enough for a face-off, a new study has found. Tracking data shows that young giant manta rays in Central America strictly stick to comparatively safe coastal areas for the first few years of their life. When they’re large enough that natural enemies are a lesser concern, they leave these sanctuaries and embark on journeys spanning hundreds of kilometers. This shift in space use allows mantas to grow in safety before facing another type of danger in the open oceans: industrial fisheries and vessel strikes in unprotected waters. The authors say underwater corridors are needed to protect adult mantas on their treks. Giant manta rays can grow up to nine meters long with a disc size of seven meters across and weigh up to 2,000kg. This size leaves them with very few natural enemies once they reach adulthood at around eight to ten years old. But giant manta ray babies, called pups, cannot rely on their size to protect them from predators that live in the open ocean, including several species of shark and orcas.

One of the manta rays tracked in the study. Credit: Jeffry Madrigal Giant manta rays can grow up to nine meters (30 feet) long with a disk size of seven meters (23 feet) across and weigh up to 2,000 kg (4,400 pounds). This size leaves them with very few natural enemies once they reach adulthood at around eight to 10 years old. But giant manta ray babies, called pups, cannot rely on their size to protect them from predators that live in the open ocean, including several species of shark and orcas.

Virgo Cluster galaxies captured by the Next Generation Virgo Cluster Survey. Images: NGVS Team, CFHT, Jean-Charles Cuillandre and Giovanni Anselmi (Coelum). Astronomers using the Canada-France-Hawaiʻi Telescope have identified more than 2,100 previously unknown galaxies in the Virgo Cluster, more than doubling its known galaxy population.