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แวะมาเดินเล่น (at อุทยานแห่งชาติเขาไหญ่)

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griseus:

USING LIVING FISH TO STUDY ANCIENT EVOLUTIONARY CHANGES: How plasticity works in evolution race

Ambitious experimental and morphological studies of a modern fish show how developmental flexibility may have helped early ‘fishapods’ to make the transition from finned aquatic animals to tetrapods that walk on land.

The origin of tetrapods from their fish antecedents, approximately 400 million years ago, was coupled with the origin of terrestrial locomotion and the evolution of supporting limbs. Polypterus is a ray-finned fish (actinopterygians) and is pretty similar to elpistostegid fishes, which are stem tetrapods.

Polypterus therefore serves as an extant analogue of stem tetrapods, allowing us to examine how developmental plasticity affects the ‘terrestrialization’ of fish. How else would you find out what behavioral and physiological changes might have taken place when fish first made the move from sea to land over 400 million years ago? putting a fish walking on land…

(read more)

(via rhamphotheca)

Source: griseus
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astronomy-to-zoology:

"Psychedelic Jones Moth" (Thaumatographa jonesi)

…a strikingly colored species of Tortricid mot which occurs in eastern North America. Like other members of the subfamily Chlidanotinae T. jonesi is a day-flying moth and has been associated with pine forests. Thaumatographa jonesi is quite rare and as such much of its biology and ecology is not well known and host plant records are not well known. 

Classification

Animalia-Arthropoda-Insecta-Lepidoptera-Tortricoidea-Torticidae-Chlidanotinae-Thaumatographa-T. jonesi

Image(s): John R. Maxwell

Source: astronomy-to-zoology
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astronomy-to-zoology:

This little spider was found on a hiking trail in new york state. Im not sure what it is but it resembles some orb-weavers i’ve seen around here.

You are right it is an Orb-weaver! Specifically it’s a female Spined Micrathenia (Micrathenia gracilis). Cool find!

Source: astronomy-to-zoology
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sinobug:

Katydid Nymph (Olcinia or Sathrophyllia sp., Cymatomerini, Pseudophyllinae, Tettigonidae)

by Sinobug (itchydogimages) on Flickr.
Pu’er, Yunnan, China

See more Chinese grasshoppers and crickets on my Flickr site HERE…..

Source: Flickr / itchydogimages
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cool-critters:

Candy crab (Hoplophrys oatesi)

The candy crab is a very colourful crab that grows from 1.5 to 2 cm. It lives on various species of soft coral in the Dendronephthya genus.

It camouflages itself by mimicing the colours of the polyps among which it hides. It adds further camouflage by attaching polyps to its carapace. Colours vary depending on the colour of the coral, and may be white, pink, yellow or red. This crab is widespread in the Indo-Pacific and it feeds on plankton.

photo credits: digimuse, Brian Maye, divemecressi

(via rhamphotheca)

Source: cool-critters
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rhamphotheca:

A large female Praying Mantis (Mantis religiosa) feeds on a Bush Cicada (Tibicen dorsatus) at Guadalupe River State Park, Spring Branch, TX, USA.

(via: Guadalupe River State Park - TPWD)

Source: rhamphotheca
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สบายๆ หลังฝนพรำ (at อุทยานแห่งชาติน้ำตกเขาชะเมา จ.ระยอง)

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ftcreature:

Did you know?

Honduran white bats make their own shelters by manipulating the leaves of large plants to form their very own “tents” to hide in! 

Photo: Konrad Wothe
More info: http://bit.ly/1t9wnJq

Source: ftcreature
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strangebiology:

Paleontologists found this sweet whorl of teeth called a Helicoprion, but really didn’t know how it might have been situated in a fish’s mouth. 

There were many theories postulated about how the teeth fit in the animal’s mouth (fourth image). When another specimen was found, it was determined that the owner of this strange jaw (not a shark, but a ratfish) had no upper teeth at all.

Ladies and gentlemen, the most metal fish.

(via Laelaps/National Geographic) Art by Ray Troll.

(via rhamphotheca)

Source: strangebiology