Like all other living organisms, animals face the challenge of fending off enemies. Using chemical weaponry can be an effective strategy to stay alive. Instead of taking over this task themselves, many marine and terrestrial animals associate with microbial symbionts that can provide such protection. An international team of researchers led by scientists of Johannes...
Novel approach studies whale shark ages the best way — while they are swimming
Already the world's largest shark species, male whale sharks can swim around the ocean for up to 130 years, according to a recently published study by scientists at Nova Southeastern University's (NSU) Guy Harvey Research Institute (GHRI) and collaborators from the Maldives Whale Shark Research Programme.
The research on whale shark aging growth dynamics, published in...
Effort to preserve lory population shows success
A long-term plan to preserve the Rimatara lorikeet by restoring an extirpated population of the species on a neighboring island that is free of predatory ship rats is demonstrating the importance of this kind of protective program for the sustainability of endangered bird species. A case study published in the International Union for Conservation of...
5,000 percent increase in native trees on rat-free palmyra atoll
New research published in PLOS ONE this week demonstrates dramatic positive benefits for native trees following rat removal at Palmyra Atoll, a magnificent National Wildlife Refuge and natural research laboratory located about 1000 miles south of Hawaii.
In one of only a few studies of its kind, scientists measured the effects of rat removal on the...
Social isolation: Animals that break away from the pack can influence evolution
For some animals -- such as beetles, ants, toads, and primates -- short-term social isolation can be just as vital as social interaction to development and long-term evolution. In a review published July 17 in the journal Trends in Ecology & Evolution, two evolutionary biologists describe approaches for testing how an animal's isolation might impact...
The freediving champions of the dolphin world
For the first time, researchers have explored the physiological adaptations that enable different populations of the same species of dolphin to vary in diving ability by almost 1000m. The research, published in two complementary studies in Frontiers in Physiology, compared the lung mechanics and metabolic rates of bottlenose dolphin populations known for their different hunting...