Tag: ecology

According to a latest research, pollution and other odors causes hindrance for insects in search of flowers to feed on. In a joint study, researchers from the University of Arizona and University of Washington studied tobacco hornworm moths (Manduca sexta) while they searched and interacted with flowers. The moth likes to feed on nectar from the plants like the Sacred Datura, which usually are seen growing hundreds of meters apart. Therefore, the moth uses its sense of smell to locate flowers. Researchers observed that the moth could locate the scent…

It is a well known fact that spiders are insectivorous and part of their diet also includes plant material like pollen. But not everyone knows that spiders like to go for fishing too. According to a study conducted by Martin Nyffeler who is a spider expert and Zoologist at the University of Basel, Switzerland and Bradley Pusey, a fish expert coming from the University of Western Australia discovered that a few large sized spider varieties include small fish in their diet too. They have recorded incidents of spiders hunting fish from all the continents except Antartica. Majority…

Katydids (better known as bushcricket) are nocturnal insects and are predominantly known for their loud mating or love calls. These calls are produced when the males looking for females, rub their forewings together (stridulation). 

A new study suggests that like humans, chimpanzees are also very particular about their bed. Chimpanzees unlike humans are known to create their bed every day starting from scratch just before their bedtime. The exclusive chimpanzees beds are called nests and it require bending, breaking stems of tree, and piling leaves in an interwoven pattern, on this structure. But researchers noticed that chimpanzees do not make their nest on any random tree, rather choose branches of Ugandan ironwood trees for the purpose. These trees provided them with sturdy and stable…

Cannibalism in the animal kingdom is very well known fact among the inhabitants. Animals whether big or small in their race for survival, resort to kill their competition by eating them. Animals like jungle king, lions are known to kill the offspring of the revival king to pave way for better future of its own offspring. But researchers say, the behavior of cannibalism can be also seen tiny wood frog tadpoles. These innocent looking tadpoles when hungry can eat other tadpoles present in the pool. Such behavior has also been…

While studying the Brazilian cave insects, researchers to their surprise discovered a penis like genitals in females and organ similar to a vagina in males. For the first time they have noticed, such an extreme switch of sex organs and have dubbed the newly revealed penis of the female insects as “gynosome” and “phallosome” for the vagina like organ in male insects. 

Studying the 305 million years old harvestmen fossil images, researchers and archaeologists have discovered that the forefathers of existing arachnids had 2 pair of eyes and not just one. 

When it comes to visualizing environment, eyes play an important role. But there are other ways of navigation such as echolocation used by bats and dolphins. Recently, researchers studying Mexican blind cavefish (Astyanax fasciatus), have found a unique and new method of navigation. These fishes spend their entire life in the deep sea or dark caves, which are devoid of any source of light and so as the name suggests, their eyes are rendered useless and over the time the fish losses their eyeballs. 

Researchers from the University of Hamburg, Germany and Macquarie University in Australia, studying St. Andrew’s Cross spiders, have found that male spiders looking for suitable mates, smell the webs woven by females and determine the females are ready for mating. The researchers observed several specimens of the species and conducted numerous experiment in their laboratory and finally concluded that smelling the pheromones present on the female web, male spider make a decision whether to move closer to the female for mating or not. 

When we encounter a danger, the first thing that strikes in our mind is to run away and hide (though many of us might choose to give a fight). But the article is in the context of animals and plants. Animals when encounter any danger of being attacked, the first instinct is to escape from the danger is to run. Unfortunately, the plants cannot do that. Rather, plants in order to defend themselves from their predators have evolved various defense techniques such as chemical weapons and insect armies.