Galapagos pink iguana on film


Galapagos pink land iguana

From the Bangkok Post in Thailand:

Galapagos pink iguana captured on film

Published: 1/01/2013 at 11:46 AM

Veteran British nature broadcaster David Attenborough is to show the first filmed sighting of the rare pink iguana, in a television series on the Galapagos Islands which begins Tuesday.

The 86-year-old filmed the rare Conolophus marthae iguana in June last year for his new series “Galapagos 3D”, which goes out on Britain’s Sky television.

It was only identified as a separate species in recent years and it will be the first time the creature has been seen on screen.

It was filmed on the island of Isabela in the volcanic Ecuadoran archipelago in the Pacific Ocean.

“It was a privilege to see it,” said Attenborough.

“It’s a remarkable thing in this day and age when you think about the number of scientists per square metre in the Galapagos, and yet suddenly we have discovered a new species.

“A little periwinkle or something which nobody has identified before is one thing, but this is more than that: it’s a large, pink iguana.”

Series executive producer Geffen added: “When he finally came face-to-face with the iguana it was just one of the most extraordinary moments that I’ve ever experienced: here was the world’s greatest naturalist coming face-to-face with a new species.

“In the footsteps of Charles Darwin but almost 200 years later, David Attenborough was capturing the rare species on film for the first time.”

Attenborough celebrated 60 years with the BBC last year in a career that has seen him win many awards and the respect of the scientific community.

See also here.

Sir David Attenborough believes his type of wildlife shows may cease to be made the day he retires: here.

Galapagos islands exhibition in Switzerland


This video is called Galapagos: the finches (4/7).

From the Universität Zürich in Switzerland:

Tour the Galapagos Islands in Zurich

10.12.2012

Galapagos, the completely isolated volcanic islands in the Pacific, can be explored right here on your doorstep from December 11. The University of Zurich Zoological Museum has dedicated its new special exhibition to this small archipelago so important for evolutionary theory. Armed with a guide, visitors travel around the Galapagos Islands, where they learn about its unique flora and fauna.

Once a refuge for pirates and a supply station for whalers, today the Galapagos Islands are an eldorado for nature lovers and biologists. Probably the most famous biologist of them all, Charles Darwin, made observations in the Galapagos that would later convince him that species can develop through natural selection; a revolutionary insight.

Visitors to the special exhibition Galápagos travel from one island to the next via the exhibits, learning about Darwin’s little world within itself. They can explore the extraordinary animal and plant world and find out how biologists from the University of Zurich conduct research on the Galapagos Archipelago while pursuing nature conservation.

Endemites: witnesses to evolution

The Galapagos Islands are teeming with species that do not exist anywhere else, so-called endemites. The ancestors of these plants and animals came from the South-American mainland 1,000 kilometers across the sea. Only a few animals made it: some invertebrates, birds and reptiles, very few mammals and no amphibians. In their new home, they adapted to a different diet, climate and habitat. For instance, visitors to the exhibition learn about iguanas that feed on algae on the seabed, finches that peck at seabirds until they bleed or huge giant tortoises.

Tame but still stressed

All visitors are impressed by the how tame the animals on the Galapagos Islands are. Because there were no people, dogs, cats or other predatory mammals there for millions of years, the animals in the archipelago lost their flight instinct in the course of evolution, which had dire consequences for some species. Even though the animals do not run away from humans and land predators, they are still stressed, as is demonstrated to exhibition-goers with a frigate bird, whose heart beats faster and faster the closer they get to him.

Nature conservation and research

The plants and animals introduced and a population boom threaten the unique environment of the Galapagos Islands. Nature conservation and research are tackling this threat, such as by introducing conservation programs for the giant tortoises, rat control measures to protect the Galapagos albatross or resettling the endangered mockingbirds.

The latter is a project conducted by biologists from the University of Zurich. To protect the first UNESCO World Heritage natural site successfully, public interest, research and nature conservation are essential. Thats why and because the Galapagos Islands are so important in the history of the natural sciences we are devoting an exhibition to them, explains Head of the Zoological Museum Marianne Haffner.

Only through a broad understanding of the singularity of the Galapagos Islands will the archipelago survive for generations to come, adds Curator Lukas Keller. The idea is thus to show special exhibition at other museums and stimulate enthusiasm for the extraordinary world of the Galapagos.

Special exhibition Galápagos

Opening times:
December 11, 2012 until September 8, 2013, Tuesday to Friday: 9 am 5 pm, Saturday and Sunday: 10 am 5 pm, closed Monday.

Opening times over the Christmas period:
Dec. 24 and 25: closed
Dec. 26: 10 am 5 pm
Dec 27 and 28: 9 am 5 pm
Dec. 29 and 30: 10 am 5 pm
Dec. 31 and Jan. 1: closed

Family workshop (free) every Sunday from 2 4 pm: Galápagos einfach Reise zu den verwunschenen Inseln with an exciting tour of the special exhibition and twelve research tasks for the whole family.

Group tours on request: zminfo@zm.uzh.ch

Guide to the special exhibition: CHF 15 in the museum shop

Entrance is free.

Zoologisches Museum der Universität Zürich
Karl Schmid-Strasse 4
8006 Zürich
Switzerland
Tel. +41 44 634 38 38
zminfo@zm.uzh.ch
facebook.com/uzh.zm

Galapagos conservationists use poison to fight invading rats: here.

Galapagos tortoises migration


This BBC video is called The Galápagos Tortoise.

From the Max-Planck-Gesellschaft in Germany:

27 November 2012

Galapagos tortoises are a migrating species

This press release is available in German.

The Galapagos giant tortoise, one of the most fascinating species of the Galapagos archipelago, treks slowly and untiringly across the volcanic slopes. Scientists of the Max Planck Institute for Ornithology in Radolfzell, together with the Charles Darwin Foundation, have used GPS technology and modern 3D acceleration measurements to find out that especially the dominant male tortoise wanders up to 10 kilometres into the highlands of the island. Only the fully grown animals migrate, the young tortoises stay year round in the lowlands. The reason for this and the question of why the animals don’t rest during the dry season are not known yet.

Even Charles Darwin anticipated that the giant tortoises wandered large distances. In the cool dry season, the highlands of Santa Cruz are engulfed in fog which allows the vegetation to grow despite the lack of rain. In the lowlands, however, there is no thick layer of clouds and the tortoises’ vegetation is not available year round. Adults, which can weigh up to 250 kilogram, spend the dry season in the higher regions at an elevation of 400 meters above sea level. However, since the food is not as nutritious there, they trek back to the lower zones where there is succulent vegetation in abundance as soon as the rainy season begins.

In order to study the migratory pattern more closely, Stephen Blake from the Max Planck Institute for Ornithology and his colleague Washington Tapia from the Galapagos National Park secured GPS loggers with 3D acceleration monitors onto 17 adult tortoises. This allowed the scientists to determine the animals’ exact position and behaviour over a period of two years. In order to gather information on the entire population, the researchers noted the size, sex and location of each tortoise they met on their monthly hikes along the volcanic hillsides. They combined the GPS data with the temperature data and information about availability of vegetation.

The results show that the tortoises have a partial migration system, where not every individual migrates. Only the adult animals wander and only the larger specimens are more likely to move. In June they start their slow, tedious march which can be up to ten kilometres long into the highlands. Adult females remain in the lowlands until they lay their eggs and then they also make their way to the highlands. In contrast, the smaller tortoises stay in the lower elevated areas all year round.

Although giant tortoises are able to survive for up to one year without nourishment, which made them a popular staple for seamen, they nevertheless wander for large distances searching for food as this study shows for the first time. Why don’t they just look for a shelter? The question of why the younger animals don’t migrate hasn’t been answered by the scientists yet. “Either the energy expenditure of this strenuous hike is too high, or there is still enough food available for the smaller animals.” Stephen Blake suspects, “perhaps the younger animals can’t tolerate the wet cold climate of the higher regions.”

In other species, the largest and the most dominant individual does not migrate because it can best defend itself against its competitors. It doesn’t have to leave to survive. However, among the Galapagos tortoises, it’s usually the largest and most dominant individual which takes on this arduous journey.

Future studies on giant tortoise species of the other Galapagos Islands with varying ecological conditions will show how environment influences the migration scheme of these closely related reptiles. The scientists also want to include factors such as age, size, sex and morphology in their studies to see why the behaviour changes in different lifetime stages and what the trigger of migration is.

Despite the threat of hunting, invasive species such as goats and rats, and the loss of habitat due to man, the Galapagos Tortoise still shows its original migrating behaviour. This and future studies will help to maintain this behaviour with the help of effective measures such as establishing corridors, preserving key habitats, keeping tortoise-friendly roads and maintaining less urban development. Based on its importance to the Galapagos Archipelago ecosystem as an herbivore and seed disperser, the annual migration of the tortoise must be preserved.

See also here.

New snake species discovery in Ecuador


This is a live Imantodes chocoensis. Its head is about the size of an American penny. (Credit: Omar Torres-Carvajal et al. CC-BY 3.0)

From ScienceDaily:

A Rather Thin and Long New Snake Crawls out of One of Earth’s Biodiversity Hotspots

(Nov. 27, 2012) — Field and laboratory work by a group of zoologists led by Omar Torres-Carvajal from Museo de Zoología QCAZ, Pontificia Universidad Católica del Ecuador, has resulted in the discovery of a new species of blunt-headed vine snake from the Chocoan forests in northwestern Ecuador. This region is part of the 274,597 km2 Tumbes-Chocó-Magdalena hotspot that lies west of the Andes.

The study was published in the open access journal ZooKeys.

Blunt-headed vine snakes live in an area comprising Mexico and Argentina, and are different from all other New World snakes in having a very thin body, disproportionately slender neck, big eyes, and a blunt head. They live in trees and hunt frogs and lizards at night. The new species described by Torres-Carvajal and his collaborators was named Imantodes chocoensis and increases the number of species in this group of snakes to seven.

Snakes collected as far back as 1994 and deposited in several Ecuadorian and American natural history museums were also examined. The authors were soon surprised with an interesting discovery. Some individuals from the Ecuadorian Chocó lacked a big scale on their face that is present in all other blunt-headed vine snakes from the New World. Other features, as well as DNA evidence, indicate that these Chocoan snakes actually belong to a new species. DNA data also suggest that its closest relative is a species that inhabits the Amazon on the other side of the Andes.

‘One possible explanation for the disjunct distribution between the new species and its closest relative is that the uplift of the Andes fragmented an ancestral population into two, each of which evolved into a different species, one in the Chocó region and the other in the Amazon’ said Dr Torres-Carvajal.

New Californian millipede discovery


This video from Ecuador is called Millipede in the Yasuni.

Jennifer Viegas in the USA writes:

Leggiest Animal Thrives Near Silicon Valley

Females of this newly found millipede get around on some 750 legs, while the males crawl about on 562 limbs.

Wed Nov 14, 2012

The world’s leggiest animal features up to 750 legs and may make its own silk “clothing.”

The translucent species, Illacme plenipes, meaning “in highest fulfillment of feet,” lives in the foggy, oak-forested outskirts of Silicon Valley, just south of San Francisco. Females of this millipede have a leg up over males, which possess a mere 562 limbs. That’s still impressive, as most common garden millipedes have about 100 legs.

Paul Marek, a University of Arizona entomologist, told Discovery News that “all the legs evolved for burrowing in its deep subterranean habitat, and for clinging to the sandstone boulders.”

Marek and colleagues also found that the ultra-leggy millipede possesses body hairs that produce silk.

“We suggest that the silk may have evolved as a defense secretion or a means to keep their exoskeleton clean from parasites and little bits of junk that might accumulate on them in their subterranean habitat,” Marek said.

This exoskeleton is jagged, scaly and translucent. He explained that many subterranean creatures, particularly those that live in caves, are de-pigmented and are translucent and/or white. It is energetically costly to produce pigment, and these animals do not need to maintain body coloration.

The millipede sports comparatively massive antennae that are used to feel its way through the dark because it lacks eyes. Its mouth, unlike other millipedes that chew with developed grinding mouthparts, is rudimentary. The scientists believe that its lower jaw swings down, allowing the sharp and pointy mandibles to pierce plant or fungal material.

“Once the plant/fungal material is pierced and exuding juices, the millipede sucks up the fluid through its tooth-lined labral opening,” Marek said.

He continued, “Nearly all millipedes are decomposers and feed on decaying organic matter. They’re an essential part of the ecosystem; they breakdown organic matter and release nutrients (like carbon, nitrogen and sugars) for future generations of life to use.”

The closest presumed relative of the millipede is Nematozonium filum, which lives in South Africa. The common ancestor of N. filum and I. plenipes was able to spread to present-day California prior to the supercontinent of Pangaea breaking apart around 200 million years ago.

“Over millions of years, and through evolutionary time, the millipede became specially adapted to this unique area in California,” Marek said. “It’s known as a relict species because it is isolated both in space and evolutionary time. Because of this, and significant development (climate change, transit, housing and other human industry), the species is certainly in danger of further habitat loss and potentially extinction.”

The leggy animal’s habitat is also home to other unique animals and plants, which include local flowers, trees, ferns, mosses, salamanders, scorpions, beetles and trapdoor spiders. Many of them are found no place else on Earth.

Casey Richart, a San Diego State University evolutionary biologist, agrees the leggy millipede “appears to be micro-endemic and should be of conservation concern. The importance of this species is potentially very high. Since it has diverged so anciently from its nearest relative, it likely has unique chemical compounds, some of which may have utility to human society.”

Richart also wondered if the millipede could be the leggiest animal ever- past or present. As of now, no other known extinct or living animal has had more than 750 legs.

The millipede is described by Marek and colleagues, Jason Bond of Auburn University and William Shear of Hampden-Sydney College, in the latest issue of the journal ZooKeys.

See also here.

Why Ecuadorean asylum for WikiLeaks’ Assange?


This video, recorded in London, England says about itself:

“Why is it that an Australian, facing prosecution from a European country, decides to appeal for asylum to a South American republic?” Tariq Ali posed and eloquently answered this important question when he spoke outside the Embassy of Ecuador in London on August 19, 2012, before Wikileaks founder Julian Assange spoke from the balcony of the embassy where he has been granted political asylum by the progressive Rafael Correa government of Ecuador.

The British media has played a venal role throughout the ongoing efforts to witch-hunt and silence WikiLeaks and Julian Assange. But it has plumbed new depths following the decision by Ecuador to grant his request for political asylum: here.

The Pursuit of Julian Assange Is an Assault on Freedom and a Mockery of Journalism: here.

Ecuador President Rafael Correa said yesterday that Britain has “given up its threat” to enter his country’s London embassy to arrest Wikileaks founder Julian Assange: here.

Ecuador court rejects extradition request from Belarus: here.

Julian Assange to receive Aboriginal Passport: here.