The discovery of the anchialine habitats is ascribing to Riedl (1966) who called them "Randhoelen" or "marginal caves". Later on, Holthuis (1973), describing particular shrimps from some salt water pools from Indo-west Pacific localities, named the above habitats "anchihaline pools". In the following years numerous authors (Iliffe, 1991, Yager, 1994; Stock, 1994; Juberthie & Decu, 1994; Sket, 1996) pointed attention to such characteristic biotopes, giving them other, different names: "inland marine caves", "sea water-flooded caves", "anchialine cave waters", "anchihaline habitats", "metahaline anchihaline pools", "grottes de dissolution".

At present, these habitats, according to the resolution from the International Congress of Marine Cave Biology held in Bermuda during 1984, are definitively defined as flooded inland marine caves and groundwaters that lack any direct surface connection with the open sea, with a wide range of different salinities, and showing the following subterranean features:


  • Horizontal salinity and O2 zonation
  • Relative lack of food
  • Darkness
  • Limited accessibility for marine fauna
  • Presence of stygomorphic organisms


    The anchialine habitats are mainly sea-influenced ground waters. For the most part anchialine conditions developed in subtropical and tropical coasts consisting of carbonates or lavas, on the islands or continental media, probably pending plio-pleistocenic sea regressions. These habitats most probably developed all over the World, where lavas or karstic masses meet the sea waters. Anchialine fauna has drawn particular attention because it mostly embraces endemic organisms, as well as tethyan relicts. Anchihaline species, as a rule, originated directly from sea waters ancestors, but at present their non subterranean marine relatives do not exist or they inhabit some unfavourable, extreme habitats; only a few taxa colonized the anchihaline systems from limnic inland conditions.

    Anchialine habitats are rich of remarkable and unusual fauna, including primitive crustacean relicts such as Remipedia. Anchialine taxa, as a rule, show highly disjunct distributions: they inhabit cave and coastal anchialine habittas from isolated locations in both Atlantic and Pacific oceans, and are onsidered true Thetyan relicts. In last decade noteworthy representatives of this groups, of great phylogenetic value, have been discovered such as subterranean platycopioids, calanoids, speleoithonids, novocriniids, etc.

    It is interesting to note that crustaceans (remipedes, ostracods, copepods, amphipods, isopods, mysids, thermosbaenaceans, decapods) dominate among animals living exclusively in anchialine environments, some of them being much better represented tan others (Kornicher & Ilffe, 2000).

    In recent years approximately more than 300 new species, 50 new genera, at least 10 new families, two new orders and even a new class of crustaceans (the Remipedia) have been described from anchialine caves, particularly on islands.

    The recent discovery od misophrioid copepods in anchialine caves on Bermuda revealed that this habitat has been also exploited by this group of crustaceans previously considered a most deep-sea taxon (Boxshall, 1984).

    As regard the origin of the anchihaline stygobiontes, two main hypotheses are at present known: the "deep sea hypothesis" (Iliffe a. o., 1984) and the "shallow water hypothesis" (Stock, 1986; Danielopol, 1990).According to the former most anchialine immigrants evolved from deep sea water ancestors; on the contrary, the latter support a shallow, coastal waters origin for most anchialine colonizers.

    The most remarkable italian anchialine systems can be found along the Tuscanian tirrenian coast (Punta degli Stretti cave), along the Sardinian and Sicilian coasts, and along the adriatic and ionian coasts (caves between S. Cesarea Terme and Castro Marina: Zinzuluza, Buco dei Diavoli, L'Abisso and phreatic habitats in wells)

    Anchialine waters of Italy are very densely populated, for the most part by crustaceans, water mites and oligochaetes: the mesohaline habitats are almost exclusively characterized by the genera Pseudoniphargus, Microcharon, Monodella, Spelaomysis, Typhlocaris, Halicyclops, Neocyclops, Schizopera ; oligohaline and limnic habitats are dominated by the genera Hadzia, Stygiomysis, Orniphargus, Salentinella and Diacyclops. The numerous ostracod species can live both in mesohaline and oligohaline waters, being for the most part stygophilic (Eucandona fabaeformis, Pseudocandona pratensis, Cypria ophtalmica, Herpetocypris brevicaudata, Notodromas persica, Cypridopsis vidua, Plesiocypridopsis newtoni, Sarscypridopsis aculeata ), only two species, viz. Pseudolimnocythere hypogea and Trapezicandona italica (Karanovic & Pesce, in press) are stygobitic. Similar faunistic conditions are characteristic to the anchialine areas of the adriatic balkanic coasts.



    ANCHIALINE FAUNA OF PUGLIA (South Italy)


  • Anchialine Fauna of the Zinzulusa Cave
  • Anchialine Fauna of the "L'Abisso" Cave
  • Anchialine Fauna of the "Buco dei Diavoli" Cave
  • Anchialine Fauna of phreatic systems


    The anchialine fauna of Apulia as a whole originated through different waves of immigrants. One wave, at present represented by some thetyan relicts (Higginsia ciccaresei, Monodella stygicola, Stygiomysis hydruntina, Typhlocaris salentina), adapted to fresh water systems in the past and successfully inland dispersed; another one (Spelaeomysis bottazzii, Salentinella angelieri, Salentinella gracillima) followed the shift of the coast lines of the Mediterranean pending the Pleistocene; some other taxa ( Microcharon arganoi, Hadzia minuta), whose distribution seem to be limited to coastal habitats, most likely originated following the Miocene "salinity crisis" of the Mediterranean. At last, some harpacticoid copepods, such as Esola spelaea, Schizopera clandestina, Schizopera cicolanii, Psyllocamptus monacus, are to be considered marine immigrants more recently adapted, after preadaptation in litoral karstic systems, according to the "Two-step model" of colonization (Coineau & Boutin).

    Particularly the anchialine fauna of the Salentine Peninsula includes a gret number of palaeomediterranean taxa, which show close affinities with the Gondwana fauna, and could be considered relict elements of a tropical and/or subtropical miocenic fauna.



    LINKS


  • First record of Superornatiremidae (Copepoda: Harpacticoida) from Mediterranean waters
  • Dr. Thomas Iliffe Publications
  • Cave Biology and Hydrology
  • Critically Endangered Anchialine Cave Species
  • Rocha's Home Page
  • "Bringing to light" anchialine cave ecology
  • Anchialine caves and cave fauna of the World



    RELEVANT LITERATURE


    Boxshall, G.A. and T.M. Iliffe (1986). New cave-dwelling misophrioids (Copepoda) from Bermuda. Sarsia, 71:55-64.

    Boxshall, G.A. and T.M. Iliffe (1987). Three new genera and five new species of misophrioid copepods (Crustacea) from anchialine caves on Indo-West Pacific and North Atlantic Islands. Zoological Journal of the Linnean Society, 91:223-252.

    Boxshall, G.A. and T.M. Iliffe (1990). Three new species of misophrioid copepods from oceanic islands. Journal of Natural History, 24:595-613.

    Fiers, F., J.W. Reid, T.M. Iliffe and E. Suárez-Morales (1996). New hypogean cyclopoid copepods (Crustacea) from the Yucatán Peninsula, Mexico. Contributions to Zoology, 66(2): 65-102.

    Fosshagen, A. and T.M. Iliffe (1985). Two new genera of Calanoida and a new order of Copepoda, Platycopioida, from marine caves on Bermuda. Sarsia, 70:345-358.

    Fosshagen, A. and T.M. Iliffe (1988). A new genus of Platycopioida (Copepoda) from a marine cave on Bermuda. Hydrobiologia, 167/168:357-361.

    Fosshagen, A. and T.M. Iliffe (1989). Boholina, a new genus (Copepoda: Calanoida) with two new species from an anchialine cave in the Philippines. Sarsia, 74:201-208.

    Fosshagen, A. and T.M. Iliffe (1991). A new genus of calanoid copepod from an anchialine cave in Belize. Proceedings of the Fourth International Conference on Copepoda; Bulletin of the Plankton Society of Japan, Special Volume, pp. 339-346.

    Fosshagen, A. and T.M. Iliffe (1994). A new species of Erebonectes (Copepoda, Calanoida) from marine caves on Caicos Islands, West Indies. Hydrobiologia, 292/293:17-22.

    Fosshagen, A. and T.M. Iliffe (1998). A new genus of the Ridgewayiidae (Copepoda, Calanoida) from an anchialine cave in the Bahamas. Journal of Marine Systems, 15:373-380.

    Huys, R. and T.M. Iliffe (1998). Novocriniidae, a new family of harpacticoid copepods from anchihaline caves in Belize. Zoologica Scripta, 27(1):1-15.

    Iliffe, T.M. (1987). Observations on the biology and geology of anchialine caves. In: Proceedings of the Third Symposium on the Geology of the Bahamas, CCFL Bahamian Field Station, H.A. Curran, ed., pp. 73-80

    Iliffe, T.M. and.S. Sarbu (1990). Anchialine caves and cave fauna of the South Pacific. NSS News, 48:88-96.

    Iliffe, T.M. (1991). Anchialine cave fauna of the Galapagos Islands. In: Galapagos Marine Invertebrates, M.J. James, ed., Plenum Press, New York, p. 209-231.

    Iliffe, T.M. (1992). Anchialine Cave Biology. In: The Natural History of Biospeleology, A.I. Camacho, ed., Museo Nacional de Ciencias Naturales, Madrid, pp. 613-636.

    Iliffe, T.M. (1992). Troglobitic anchialine and freshwater cave fauna of Quintana Roo, Mexico. Pp. 197-215 in: Diversidad Biologica en la Reserva de la Biosfera de Sian Ka'an, Quintana Roo, Mexico, Vol. II, D. Navarro and E. Suarez-Morales, eds., Centro de Investigaciones de Quintana Roo, Chetumal, Q.R., Mexico, 382 pp.

    Iliffe, T.M. (1986). The zonation model for the evolution of aquatic faunas in anchialine waters. Stygologia, 2:2-9.

    Jaume, D., G.A. Boxshall, and T.M. Iliffe (1998). Two new genera of misophrioid copepods (Crustacea) from an anchialine cave in the Bahamas. Journal of Natural History, 32:661-681.

    Karanovic I. & G. L. Pesce. (in press) Ostracods from ground waters of Puglia (south Italy). an update and redescription of Pseudolimnocythere hypogaea Klie, 1938. Thalassia Salentina. Lecce.

    Kornicher L.S. & T. M. Iliffe. 2000. Myodocopid Ostracoda from Exuma Sound, Bahams, and from Marine Caves and Blue Holes in the Bahamas, Bermuda, and Mexico. Smithsonian ontr. to Zool., 606: 1-98.

    Ohtsuka, S., A. Fosshagen and T.M. Iliffe (1993). Two new species of Paramisophria (Copepod, Calanoida, Arietellidae) from anchialine caves on the Canary and Galápagos Islands. Sarsia, 78(1):57-68.

    Pansini A. & G. L. Pesce. 1998. Higginsia ciccaresei sp. nov. (Porifera: Demospongiae) from a marine cave on the Apulian coast (Mediterranean Sea). J. Mar. Biol. Ass. U.K., 78: 1083-1091.

    Pesce G.L. (in press) The Zinzulusa cave: a most endangered biodiversity "hot spot" of South Italy. Natura Croatica.

    Pesce G.L. & T. Pagliani. 1999. Gli ambienti anchialini della Puglia e la loro fauna. Thalassia Salentina., Lecce, suppl. al n. 23: 89-102.

    Rocha, C.E.F. & Iliffe, T.M. (1991). Speleoithonidae, a new family of Copepoda (Cyclopoida) from anchialine caves on the Bahama Islands. Sarsia, 76: 167-175.

    Rocha, C.E.F. da and T.M. Iliffe (1994). Troglocyclops janstocki , new genus, new species, a very primitive cyclopoid (Copepoda, Cyclopoida) from an anchialine cave in the Bahamas. Hydrobiologia, 292/293:105-112.

    Rocha, C.E.F. da and T.M. Iliffe (1993). New cyclopoids (Copepoda) from anchialine caves in Bermuda. Sarsia, 78(1):43-56.

    Stock, J.H., T.M. Iliffe and D. Williams (1986). The concept "anchialine" reconsidered. Stygologia, 2:90-92.

    Sket, B. and T.M. Iliffe (1980). Cave fauna of Bermuda. Internationale Revue der gesamten Hydrobiologie, 65:871-882.

    Suárez Morales, E., J.W. Reid, T.M. Iliffe and F. Fiers (1996). Catálogo de los Copépodos (Crustacea) Continentales de la Península de Yucatán, México. El Colegio de la Frontera Sur (ECOSUR), Chetumal, Quintana Roo, Mexico, 296 pp.

    Suárez-Morales, E. and T.M. Iliffe (1996). New Superfamily of Calanoida (Copepoda) from an anchialine cave in the Bahamas. Journal of Crustacean Biology, 16(4):754-762.

    Wilkens, H., J. Parzefall and T.M. Iliffe (1986). Origin and age of the marine stygofauna of Lanzarote, Canary Islands. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 83:223-230



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