Fish become pessimistic and lovesick if they're torn apart from their true lover

Humans aren't the only species whose mental state is affected when they lose their lover, according to Daily Mail.

Female cichlids, a type of monogamous fish that primarily dwells in South America, become depressed and lovesick when their mate is removed and they're placed with a non-preferred male partner, a new study has found.

Researchers came to this conclusion after the female fish took longer to investigate boxes that either contained food or were empty, demonstrating symptoms of apathy.

Plant extinction 'bad news for all species'

The lost plants include the Chile sandalwood, which was exploited for essential oils, the banded trinity plant, which spent much of its life underground, and the pink-flowered St Helena olive tree.

The biggest losses are on islands and in the tropics, which are home to highly valued timber trees and tend to be particularly rich in plant diversity, according to BBC.

Scientists at the Royal Botanic Gardens, Kew, and Stockholm University found that 571 plant species had disappeared in the last two and a half centuries, a number that is more than twice the number of birds, mammals and amphibians recorded as extinct (a combined total of 217 species).

Temperature maps from space would 'boost crop production'

Scientists are developing a satellite system to record the temperatures of individual fields of crops.

The aim is to survey land temperatures to estimate water-use by plants and to show how they transfer that water back to the atmosphere.

The data will also help monitor how much water is available to grow crops and how they are responding to drought.

The new system is being considered for inclusion in the EU's Earth observation programme, Copernicus.

Mites and ticks are close relatives, new research shows

Scientists from the University of Bristol and the Natural History Museum in London have reconstructed the evolutionary history of the chelicerates, the mega-diverse group of 110,000 arthropods that includes spiders, scorpions, mites and ticks, according to Science Daily.

They found, for the first time, genomic evidence that mites and ticks do not constitute two distantly related lineages, rather they are part of the same evolutionary line. This now makes them the most diverse group of chelicerates, changing our perspective on their biodiversity.

Study predicts shift to smaller animals over next century

Researchers at the University of Southampton have forecast a worldwide move towards smaller birds and mammals over the next 100 years.

In the future, small, fast-lived, highly-fertile, insect-eating animals, which can thrive in a wide-variety of habitats, will predominate. These 'winners' include rodents, such as dwarf gerbil -- and songbirds, such as the white-browed sparrow-weaver. Less adaptable, slow-lived species, requiring specialist environmental conditions, will likely fall victim of extinction. These 'losers' include the tawny eagle and black rhinoceros, according to Science Daily.