Turtle, fish and birds


Today, in the botanical garden, there was not just the carnivorous plants exhibition.

In the canal near the entrance, a red-eared slider was sitting on a beam in the water.

Coots. A juvenile and two adult herring gulls.

In the big pond carp, goldfish and roach.

In the brook, pondskaters.

In the hothouse both Victoria amazonica and Nymphaea caerulea are flowering.

Nymphaea caerulea

Carnivorous plants exhibition


This video says about itself:

Venus fly trapThe Private Life of Plants – David Attenborough – BBC wildlife.

This week, like a few years ago, there is a carnivorous plants exhibition at the botanical garden. The exhibition, linked to a conference, is co-organized by the Carnivora society.

Many species were exhibited, including Sarracenia rubra, Sarracenia flava, Sarracenia minor, and Sarracenia alata. Sarracenia alabamensis is an endangered species now in the USA.

There was Drosera binata from Australia and New Zealand.

There were also tropical Nepenthes species, including Nepenthes albomarginata and Nepenthes ampullaria.

Heliamphora species included Heliamphora nutans from the tepui table mountains of Venezuela and Guyana.

Also Heliamphora chimantensis and Heliamphora ciliata, Heliamphora pulchella, and the tepui plant Heliamphora sarracenoides, all from Venezuela as well.

There was also a show how Venus flytrap plants eat. They were fed mealworms, which take the plants 24 hours to digest. They cannot eat comparatively big prey like butterflies and crane flies.

Various carnivorous plants were also for sale, including Utricularia longifolia from Brazil. This is a bladderwort relative; though it eats worms, not small freshwater crustaceans like European bladderworts.

Bladderworts are the world’s fastest trapping carnivorous plants – suck in prey in less than a millisecond: here.

Endangered Venus Flytrap Poached for Profit: here.

The Venus flytrap digests and absorbs its prey, but how does it coordinate digestion and absorption to maximise the efficiency of this highly evolved mechanism? A new study that combines direct recordings from cells within the trap along with molecular characterization of nutrient transport reveals a complex and coordinated suite of mechanisms that underlie this elegant process: here.

The Antibacterial Activity of Honey Derived from Australian Flora: here.

Conservation works! A flower, once thought extinct, will come off the U.S.’ endangered species list: here.

Dutch bats’ favourite colour


This video says about itself:

Hunting bats (Myotis daubentonii, Myotis dasycneme)

Bats hunting over a small river around midnight in July, in northern Germany. Video taken from a digital night vision device (Nitemax), using IR-light, audio taken from a heterodyning bat receiver (made from a kit).

In the Kuindervaart canal in Flevoland province in the Netherlands, there is a research project about which colours the local colony of pond bats, like, or dislike, most.

Light usually disturbs bats, as it makes them more vulnerable to predators.

The research aims at finding out which colour is least disturbing to the bats, so that if lights are built that colour may be used.

Provisional results are that bats hate white or green light, and are less disturbed by yellow light.