Hepatopancreas

Photo of 5 mm-long juvenile of Haliotis asinina with the shell removed shows hepatopancreas in yellow color on the left of the image.

Drawing shows that mantle (in grey) covers the majority of the dorsal surface of the animal.^[1] The gills (g), digestive gland (dg), adductor muscle (am), epipodial tentacles (ept), right mantle lobe (rml), eyespot (es), cephalic tentacles (ct) and left mantle lobe (lml) are indicated.

The hepatopancreas, digestive gland or midgut gland is an organ of the digestive tract of arthropods, molluscs and fish. It provides the functions which in mammals are provided separately by the liver and pancreas, including the production of digestive enzymes, and absorption of digested food^[2].

Arthropods

Arthropods, especially detritivores in the Order Isopoda, Suborder Oniscidea (woodlice), have been shown to be able to store heavy metals in their hepatopancreas.^[3] This could lead to bioaccumulation through the food chain and implications for food web destruction, if the accumulation get high enough in these polluted areas; for example, high metal concentrations are seen in spiders of the genus Dysdera which feed on woodlice, including their hepatopancreas, the major metal storage organ of isopods in polluted sites.^[4]

Molluscs

3D reconstruction of the general anatomy of Pseudunela cornuta shows the digestive gland (dg) in green color

3D reconstruction of the digestive system of Pseudunela cornuta shows the digestive gland (dg) more clearly

Histology section of hepatopancreas of slug Deroceras laeve

Hepatopancreas is a centre of lipid metabolism and storage of lipids in gastropods.^[5]

Some species in the genus Phyllodesmium contains active zooxanthellae of the genus Symbiodinium in the hepatopancreas.^[6]

See also

• Digestive system of gastropods

References

1. ^ Daniel J. Jackson, Carmel McDougall, Kathryn Green, Fiona Simpson, Gert Wörheide & Bernard M Degnan (2006). "A rapidly evolving secretome builds and patterns a sea shell". BMC Biology 4: 40. doi:10.1186/1741-7007-4-40. PMC 1676022. PMID 17121673. http://www.biomedcentral.com/1741-7007/4/40. 
2. ^ http://web.vims.edu/adv/ed/crab/guts3.html
3. ^ Claus Svendsen, Graeme Paton & Jason M. Weeks (2002). "Soil biomarkers (invertebrates and microbes) for assessing site toxicity". In G. I. Sunahara, A. Y. Renoux, C. Thellen, C. L. Gaudet & A. Pilon. Environmental Analysis of Contaminated Sites. John Wiley and Sons. pp. 95–134. ISBN 9780471986690. http://books.google.co.uk/books?id=lvCB5H6pkqYC&pg=PA110. 
4. ^ S. P. Hopkin & M. H. Martin (1985). "Assimilation of zinc, cadmium, lead, copper and iron by the spider Dysdera crocata, a predator of woodlice" (PDF). Bulletin of Environmental Contamination and Toxicology 34: 183–187. PMID 3978257. http://www.stevehopkin.co.uk/publications/1985_BECT_34_183-187.pdf. 
5. ^ Böer M., Graeve M. & Kattner G. (2006). "Exceptional long-term starvation ability and sites of lipid storage of the Arctic pteropod Clione limacina". Polar Biology 30(5): 571-580. doi:10.1007/s00300-006-0214-6.
6. ^ Ingo Burghardt & Heike Wägele (2004). "A new solar powered species of the genus Phyllodesmium Ehrenberg, 1831 (Mollusca: Nudibranchia: Aeolidoidea) from Indonesia with analysis of its photosynthetic activity and notes on biology" (PDF). Zootaxa 596: 1–18. http://www.mapress.com/zootaxa/2004f/zt00596.pdf. 

This animal anatomy-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Digestive system Mollusc anatomy Gastropods Arthropod anatomy Fish anatomy Arthropod stubs Gastropod stubs Fish stubs Animal anatomy stubs Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Fipronil Union Harmony Look at other dictionaries: hepatopancreas — HEPATOPANCREÁS, hepatopancrease, s.n. Glandă digestivă la unele nevertebrate care cumulează funcţiile ficatului şi ale pancreasului. [pr.: cre as] – Din fr. hépatopancréas. Trimis de gall, 13.09.2007. Sursa: DEX 98  HEPATOPANCREÁS s. n. glandă… …   Dicționar Român Hepatopancreas — Hépatopancréas L hépatopancréas est un organe de l appareil digestif des mollusques des arthropodes et des poissons. Il assure chez ces animaux les fonctions qui sont assurées séparément chez les mammifères par le foie et le pancréas. Ce document …   Wikipédia en Français hépatopancréas — ● hépatopancréas nom masculin Important organe digestif des mollusques et de divers invertébrés, leur servant à la fois de pancréas et de foie …   Encyclopédie Universelle Hepatopáncreas — El nº 2 corresponde al hepatopáncreas del caracol. El hepatopáncreas es un órgano del aparato digestivo de artrópodos, gasterópodos y peces. Realiza las mismas funciones que en los mamíferos realizan el páncreas y el hígado. Los artrópodos,… …   Wikipedia Español Hépatopancréas — L hépatopancréas est un organe de l appareil digestif des mollusques des arthropodes et des poissons. Il assure chez ces animaux les fonctions qui sont assurées séparément chez les mammifères par le foie et le pancréas. Catégorie : Anatomie… …   Wikipédia en Français hepatopáncreas — ► sustantivo masculino ZOOLOGÍA Glándula que en los invertebrados sustituye al hígado y al páncreas. IRREG. plural hepatopáncreas * * * ► femenino ZOOLOGÍA Órgano de algunos grupos de animales invertebrados (artrópodos y moluscos) formado por un… …   Enciclopedia Universal hepatopancreas — noun Date: 1884 a glandular structure (as of a crustacean) that combines the digestive functions of the vertebrate liver and pancreas …   New Collegiate Dictionary hepatopancreas — areas of exocrine pancreas found in the area around the small veins off the hepatic portal vein …   Dictionary of ichthyology hepatopancreas — n. [Gr. hepar, liver; pan, all; kreas, flesh] A branched digestive gland of the cephalothorax of various invertebrates, functioning as both liver and pancreas …   Dictionary of invertebrate zoology hepatopancreas — Digestive gland of crustaceans with functions approximately analogous to liver and pancreas of vertebrates enzyme secretion, food absorption and storage …   Dictionary of molecular biology 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”