Aeglidae
Aeglidae is a family of freshwater crustaceans currently restricted to South America. They are the only anomurans to be found in fresh water except for a single hermit crab species, Clibanarius fonticola, on Espiritu Santo island, Vanuatu.[1] They live between 20° S and 50° S,[2] at altitudes between 320 metres (1,050 ft) and 3,500 metres (11,500 ft).[3]
Description
Aeglids resemble squat lobsters, in that the abdomen is partly tucked under the thorax. There is a notable sexual dimorphism in the abdomen, related to the behaviour of carrying fertilised eggs on the pleopods.[4] Aeglids are omnivorous, preferring plant matter, but also eating adult insects, molluscs, fish and fly larvae.[5]
Life cycle
Mating is preceded by a period of courtship, and does not coincide with moulting, as it does in many other decapods.[6] The eggs of aeglids hatch as juveniles which closely resemble the adults. They are cared for by their parents and live at the bottom of the body of water.[7]
Extant taxa
Aegla is the only extant genus in the family, and contains around 68 described extant species, with a further four as yet undescribed.[8] Of the 63 species and subspecies described by 2008, two are found in lakes, four in caves, and the remaining 57 are found mainly in rivers.[3] Ten species are found in Brazil, all restricted to the country's southern and southeastern regions.[9]
Species
- Aegla abtao Schmitt, 1942
- Aegla affinis Schmitt, 1942
- Aegla alacalufi Jara & López, 1981
- Aegla araucaniensis Jara, 1980
- Aegla bahamondei Jara, 1982
- Aegla camargoi Buckup & Rossi, 1977
- Aegla castro Schmitt, 1942
- Aegla cavernicola Türkay, 1972
- Aegla cholchol Jara & Palacios, 1999
- Aegla concepcionensis Schmitt, 1942
- Aegla denticulata Nicolet, 1849
- Aegla expansa Jara, 1992
- Aegla franca Schmitt, 1942
- Aegla franciscana Buckup & Rossi, 1977
- Aegla grisella Bond-Buckup & Buckup, 1994
- Aegla hueicollensis Jara & Palacios, 1999
- Aegla humahuaca Schmitt, 1942
- Aegla inconspicua Bond-Buckup & Buckup, 1994
- Aegla inermis Bond-Buckup & Buckup, 1994
- Aegla intercalata Bond-Buckup & Buckup, 1994
- Aegla intermedia Girard, 1855
- Aegla itacolomiensis Bond-Buckup & Buckup, 1994
- Aegla jarai Bond-Buckup & Buckup, 1994
- Aegla jujuyana Schmitt, 1942
- Aegla laevis (Latreille, 1818)
- Aegla lata Bond-Buckup & Buckup, 1994
- Aegla leptochela Bond-Buckup & Buckup, 1994
- Aegla leptodactyla Buckup & Rossi, 1977
- Aegla ligulata Bond-Buckup & Buckup, 1994
- Aegla longirostri Bond-Buckup & Buckup, 1994
- Aegla manni Jara, 1980
- Aegla marginata Bond-Buckup & Buckup, 1994
- Aegla manuniflata Bond-Buckup & Santos in Santos et al., 2009
- Aegla microphthalma Bond-Buckup & Buckup, 1994
- Aegla muelleri Bond-Buckup & Buckup in Bond-Buckup et al., 2010
- Aegla neuquensis Schmitt, 1942
- Aegla obstipa Bond-Buckup & Buckup, 1994
- Aegla occidentalis Jara, Pérez-Losada & Crandall, 2003
- Aegla odebrechtii Müller, 1876
- Aegla papudo Schmitt, 1942
- Aegla parana Schmitt, 1942
- Aegla parva Bond-Buckup & Buckup, 1994
- Aegla paulensis Schmitt, 1942
- Aegla perobae Hebling & Rodrigues, 1977
- Aegla pewenchae Jara, 1994
- Aegla plana Buckup & Rossi, 1977
- Aegla platensis Schmitt, 1942
- Aegla pomerana Bond-Buckup & Buckup in Bond-Buckup et al., 2010
- Aegla prado Schmitt, 1942
- Aegla renana Bond-Buckup & Santos in Santos et al., 2010
- Aegla ringueleti Bond-Buckup & Buckup, 1994
- Aegla riolimayana Schmitt, 1942
- Aegla rossiana Bond-Buckup & Buckup, 1994
- Aegla rostrata Jara, 1977
- Aegla saltensis Bond-Buckup & Jara in Bond-Buckup et al., 2010
- Aegla sanlorenzo Schmitt, 1942
- Aegla scamosa Ringuelet, 1948
- Aegla schmitti Hobbs III, 1979
- Aegla septentrionalis Bond-Buckup & Buckup, 1994
- Aegla serrana Buckup & Rossi, 1977
- Aegla singularis Ringuelet, 1948
- Aegla spectabilis Jara, 1986
- Aegla spinipalma Bond-Buckup & Buckup, 1994
- Aegla spinosa Bond-Buckup & Buckup, 1994
- Aegla strinatii Türkay, 1972
- Aegla talcahuano Schmitt, 1942
- Aegla uruguayana Schmitt, 1942
- Aegla violacea Bond-Buckup & Buckup, 1994
Fossil taxa
Haumuriaegla
Haumuriaegla glaessneri is a species known only from fossils of Haumurian age (Late Cretaceous) found near Cheviot, New Zealand.[10] At the time of its discovery, Haumuriaegla was the only known fossil from the family and the only marine member.
Protaegla
Protaegla miniscula was discovered in rocks of Albian age from the Tlayúa Formation, near Tepexi de Rodríguez, Mexico.[11]
Evolution
The family as a whole is thought to have originated around 75 million years ago in a marine environment,[3] and then entered South America from the Pacific side during the Oligocene.
External links
References
- ^ Patsy A. McLaughlin & Talbot Murray (1990). "Clibanarius fonticola, new species (Anomura: Paguridea: Diogenidae), from a fresh-water pool on Espiritu Santo, Vanuatu". Journal of Crustacean Biology 10 (4): 695–702. doi:10.2307/1548413. JSTOR 1548413.
- ^ Christopher C. Tudge (2003). "Endemic and enigmatic: the reproductive biology of Aegla (Crustacea: Anomura: Aeglidae) with observations on sperm structure". Memoirs of Museum Victoria 60 (1): 63–70. http://museumvictoria.com.au/pages/4033/60_1_tudge.pdf.
- ^ a b c Georgina Bond-Buckup, Carlos G. Jara, Marcos Pérez-Losada, Ludwig Buckup & Keith A. Crandall (2008). "Global diversity of crabs (Aeglidae: Anomura: Decapoda) in freshwater". Hydrobiologia 595 (1): 267–273. doi:10.1007/s10750-007-9022-4.
- ^ Karine Delevati Colpo, Ludmilla Oliveira Ribeiro & Sandro Santos (2005). "Population biology of the freshwater anomuran Aegla longirostri (Aeglidae) from South Brazilian streams". Journal of Crustacean Biology 25 (3): 495–499. doi:10.1651/C-2543.
- ^ Sandro Santos, Luciane Ayres-Peres, Rosana C. F. Cardoso & Carolina C. Sokolowicz (2008). "Natural diet of the freshwater anomuran Aegla longirostri (Crustacea, Anomura, Aeglidae)". Journal of Natural History 42 (13 & 14): 1027–1037. doi:10.1080/00222930701882466.
- ^ M. Almerão, G. Bond-Buckup & M. de S. Mendonça, Jr. (2010). "Mating behavior of Aegla platensis (Crustacea, Anomura, Aeglidae) under laboratory conditions". Journal of Ethology 28: 87–94. doi:10.1007/s10164-009-0159-7.
- ^ Pablo Collins, Veronica Williner & Federico Giri (2007). "Littoral Communities. Macrocrustaceans". In Martín H. Iriondo, Juan César Paggi & María Julieta Parma. The Middle Paraná River: Limnology of a Subtropical Wetland. Heidelberg: Springer. pp. 277–301. doi:10.1007/978-3-540-70624-3_11. ISBN 978-3-70623-6.
- ^ Patsy A. McLaughlin, Rafael Lemaitre & Keith A. Crandall (2010). "Annotated checklist of anomuran decapod crustaceans of the world (exclusive of the Kiwaoidea and families Chirostylidae and Galatheidae of the Galatheoidea). Part III – Aegloidea" (PDF). Zootaxa Suppl. 23: 131–137. http://rmbr.nus.edu.sg/rbz/biblio/s23/s23rbz131-137.pdf.
- ^ Sérgio L. de S. Bueno, Roberto M. Shimizu & Sérgio S. da Rocha (2007). "Estimating the population size of Aegla franca (Decapoda: Anomura: Aeglidae) by mark–recapture technique from an isolated section of Barro Preto stream, county of Claraval, state of Minas Gerais, southeastern Brazil". Journal of Crustacean Biology 27 (4): 553–559. doi:10.1651/S-2762.1.
- ^ R. M. Feldmann (1984). "Haumuriaegla glaessneri n. gen. and sp. (Decapoda; Anomura; Aeglidae) from Haumurian (Late Cretaceous) rocks near Cheviot, New Zealand". New Zealand Journal of Geology and Geophysics 27: 379–385.
- ^ Rodney M. Feldmann, Francisco J. Vega, Shelton P. Applegate & Gale A. Bishop. "Early Cretaceous arthropods from the Tlayúa Formation at Tepexi de Rodríguez, Puebla, Mexico". Journal of Paleontology 72 (1): 79–90. doi:10.1666/0022-3360(1998)072<0079:ECAFTT>2.3.CO;2.