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خۇشكەپسىز

ۋىكىجانلىق

بۈگۈنكى ھەقسىزلەر، بۇنى ھەركىم تەھرىرلىيەلەيدۇ.

Animalia, Plantae, Fungi, Bacteria, Archaea, Protista ۋە باشقا ھاياتلىق

ھازىرغىچە 760,634 .يازما يوللاندى

ۋىكى تۈرلىرى ھەقسىز، چۈنكى ھاياتلىق ئۈچۈن

تۈرلەر

ۋىكى تۈرلىرىنى ئىزدەش

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A collaboration between Wikispecies and ZooKeys has been announced. PhytoKeys also joined the collaboration in November 2010. Images of species from ZooKeys and PhytoKeys will be uploaded to Wikimedia Commons and used in Wikispecies.



Distinguished Author

Bocage-JV-Barbosa-du-1823-1.jpg

José Vicente Barbosa du Bocage
  (1823-1907).

A Portuguese zoologist and politician. He was the curator of Zoology at the Museum of Natural History in Lisbon. His work at the Museum consisted in acquiring, describing and coordinating collections, many of which arrived from the Portuguese colonies in Africa, such as Angola, Mozambique, etc. He published more than 200 taxonomic papers on mammals, birds, and fishes. In the 1880s he became the Minister of the Navy and later the Minister for Foreign Affairs for Portugal. The zoology collection at the Lisbon Museum is called the Bocage Museum in his honor. He was responsible for identifying many new species, which he named according to the naturalist who found them.

Species of the month

Eastern Emerald Elysia

Elysia chlorotica

Plakobranchidae Elysia chlorotica

Some facts about this green sea slug:

Description:
Elysia chlorotica (common name the eastern emerald elysia) is a small-to-medium-sized species of green sea slug, a marine opisthobranch gastropod mollusc. This sea slug superficially resembles a nudibranch, yet it does not belong to that clade of gastropods. Instead it is a member of the clade Sacoglossa, the sap-sucking sea slugs. Some members of this group use chloroplasts from the algae they eat for photosynthesis, a phenomenon known as kleptoplasty. Elysia chlorotica is one of these "solar-powered sea slugs". It lives in a subcellular endosymbiotic relationship with chloroplasts of the marine heterokont alga Vaucheria litorea.

Elysia chlorotica feeds on the intertidal alga Vaucheria litorea. It punctures the algal cell wall with its radula, then holds the algal strand firmly in its mouth and sucks out the contents as from a straw. Instead of digesting the entire cell contents, or passing the contents through its gut unscathed, it retains only the chloroplasts, by storing them within its extensive digestive system. It then takes up the live chloroplasts into its own gut cells as organelles and maintains them alive and functional for many months. The acquisition of chloroplasts begins immediately following metamorphosis from the veliger stage when the juvenile sea slugs begin to feed on the Vaucheria litorea cells. Juvenile slugs are brown with red pigment spots until they feed upon the algae, at which point they become green. This is caused by the distribution of the chloroplasts throughout the extensively branched gut. At first the slug needs to feed continually on algae to retain the chloroplasts, but over time the chloroplasts become more stably incorporated into the cells of the gut enabling the slug to remain green without further feeding. Some Elysia chlorotica slugs have even been known to be able to use photosynthesis for up to a year after only a few feedings.quently endorsed by the World Health Assembly on 8 May 1980.

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