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Latest Species Stories

Ravens Remember Relationships They Had With Others
2012-04-19 11:49:38

In daily life we remember faces and voices of several known individuals. Similarly, mammals have been shown to remember calls and faces of known individuals after a number of years. Markus Boeckle and Thomas Bugnyar from the Department of Cognitive Biology of the University of Vienna show in their recent article, published in Current Biology, that ravens differentiate individuals based on familiarity. Additionally, they discovered that ravens memorize relationship valence and affiliation....

2012-04-19 11:23:56

Study of simple organisms reveals preference for those who resemble themselves In a dog-eat-dog world of ruthless competition and 'survival of the fittest,' new research from the University of Leicester reveals that individuals are genetically programmed to work together and cooperate with those who most resemble themselves. A tendency for similar individuals to cooperate selectively with one another, even if they are not close relatives, can evolve spontaneously in simple organisms....

2012-04-09 13:24:01

Courtship rituals can be all-consuming, demanding time and effort — but now scientists have discovered why it might be worth it Courtship rituals can be all-consuming, demanding time and effort — but now scientists have discovered why it might be worth it. Attracting a mate — which can take significant effort, such as in a peacock's show of feathers or the exhaustive rutting of stags — can produce benefits for a species in the long term, a study suggests....

2012-04-05 21:23:44

A single gene mutation can sweep through a population, opening the door for the concept of 'species' in bacteria Bacteria are the most populous organisms on the planet. They thrive in almost every known environment, adapting to different habitats by means of genetic variations that provide the capabilities essential for survival. These genetic innovations arise from what scientists believe is a random mutation and exchange of genes and other bits of DNA among bacteria that sometimes...

2012-04-04 20:45:04

A new hypothesis counters popular evolutionary thinking that living organisms evolve by adding genes rather than discarding them A new hypothesis posed by a University of Tennessee, Knoxville, associate professor and colleagues could be a game changer in the evolution arena. The hypothesis suggests some species are surviving by discarding genes and depending on other species to play their hand. The groundbreaking "Black Queen Hypothesis" got its name from the game of Hearts. In...

2012-04-03 11:42:41

Scientists say worldwide collections, existing experts and technology make charting 10 million species in less than 50 years achievable; a necessary step to sustain planet's biodiversity An ambitious goal to describe 10 million species in less than 50 years is achievable and necessary to sustain Earth's biodiversity, according to an international group of 39 scientists, scholars and engineers who provided a detailed plan, including measures to build public support, in the March 30 issue of...

2012-04-02 15:49:26

Picky females play a critical role in the survival and diversity of species, according to a Nature study by researchers from the University of British Columbia and the International Institute for Applied Systems Analysis (IIASA) in Austria. To date, biodiversity theories have focused on the role played by adaptations to the environment: the species best equipped to cope with a habitat would win out, while others would gradually go extinct. The new study presents the first theoretical model...

2012-03-24 03:32:53

The important changes to the way scientists name new plants that took effect on 1 January 2012 included the fall of the so-called Latin requirement - a stipulation that descriptions or diagnoses of new species had to be in Latin. The new rules make it possible to take full advantage of an ongoing revolution in how botanists and mycologists verify that a particular species is indeed new to science: Many studies now routinely include the sequencing of short DNA regions that will amplify...

2012-03-19 19:19:07

A new study by University of Notre Dame biologist Michael Pfrender and a team of researchers from the University of Nevada-Reno, Utah State University and the University of Virginia suggests that snakes from different regions of the world have evolved a similar, remarkable resistance to a deadly neurotoxin. The finding, which appeared in the Proceedings of the National Academy of Sciences, greatly increases scientists' understanding of the genetic basis of adaptation and is a model for...

2012-03-09 10:48:13

Speeding up evolution may increase genetic variation, but surprisingly it can reduce species diversity, according to a study led by Carlos J. Melian The role of sex in driving genetic variation and generating higher biodiversity has been debated for over a century. Speeding up evolution may increase genetic variation, but surprisingly it can reduce species diversity, according to a study led by Carlos J. Melian from Eawag — Swiss Federal Institute of Aquatic Science and Technology,...


Latest Species Reference Libraries

Paleozoology
2013-09-30 13:34:57

Paleozoology, also spelled Palaeozoology, is a branch of many other sciences including zoology and paleontology that focuses on recovering cellular matter from animal remains that are large enough to be seen without the help of a microscope, known as macrofossils. This study is primarily used in the context of archeology and geology and aids in recreating ancient ecosystems and prehistoric environments. Paleozoologists study the tissues of many types of animals including sharks, echinoderms,...

39_b28590aeccf7d5e65ad920a431957a2b
2007-06-24 20:15:53

The Three-Spined Stickleback, Gasterosteus aculeatus, is a fish native to much of northern Europe, northern Asia and North America. It has been introduced into parts of southern and central Europe. Three subspecies that are currently recognized by the IUCN are Gasterosteus aculeatus aculeatus, which is found in most of the species range, and is the subspecies most strictly termed the Three-Spined Stickleback; its common name in England is the Tiddler, although "tittlebat" is also sometimes...

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