タンスイコシオリエビ科

タンスイコシオリエビ科
	生息年代: Albian–現世 PreЄ Є O S D C P T J K Pg N
分類
学名
	Aeglidae; Dana, 1852

タンスイコシオリエビ科 (Aeglidae) は淡水性甲殻類の科の一つである。異尾下目の中では、淡水域に生息するほぼ唯一の分類群である。現生種は全て南アメリカ大陸の南緯20-50°[1]、標高320-3500mの範囲に分布する[2]。

形態

海生のコシオリエビに似て、腹部は部分的に頭胸部の下に畳み込まれる。雌は腹肢に卵を抱えるため、腹部には性的二型がある[3] 。

生態

雑食性で、植物質のほか昆虫、貝類、小魚、ハエの幼虫などを食べる[4]。交尾は求愛の後に行われる。他の十脚類とは異なり、脱皮前の雌を雄が守る行動（交尾前行動）は行わない[5]。子は成体とほぼ同じ姿で孵化する。親は子の世話を行う[6]。

分類

タンスイコシオリエビ属 (Aegla) が唯一の現生属であり、約70種を含む[7]。2008年までに記載された63種・亜種のうち、2種が湖、4種が洞窟、残りは主に河川から発見されている[2][8]。

大きく5つのクレードに分けられ、概ね分布域と対応することが分かっている[9][10][7]。

基底グループ
- Aegla papudo Schmitt, 1942
- Aegla ringueleti Bond-Buckup & Buckup, 1994
- Aegla scamosa Ringuelet, 1948
クレードA - チリ
- Aegla affinis Schmitt, 1942
- Aegla bahamondei Jara, 1982
- Aegla occidentalis Jara, Pérez-Losada & Crandall, 2003
- Aegla neuquensis Schmitt, 1942
- Aegla alacalufi Jara & López, 1981
- Aegla manni Jara, 1980
- Aegla hueicollensis Jara & Palacios, 1999
- Aegla denticulata Nicolet, 1849
クレードB - チリ
- Aegla spectabilis Jara, 1986
- Aegla riolimayana Schmitt, 1942
- Aegla abtao Schmitt, 1942
- Aegla araucaniensis Jara, 1980
- Aegla laevis (Latreille, 1818)
- Aegla talcahuano Schmitt, 1942
- Aegla pewenchae Jara, 1994
- Aegla rostrata Jara, 1977
- Aegla cholchol Jara & Palacios, 1999
クレードC - パラナ川流域
- Aegla camargoi Buckup & Rossi, 1977
- Aegla jarai Bond-Buckup & Buckup, 1994
- Aegla spinosa Bond-Buckup & Buckup, 1994
- Aegla paulensis Schmitt, 1942
- Aegla perobae Hebling & Rodrigues, 1977
- Aegla odebrechtii Müller, 1876
- Aegla leptodactyla Buckup & Rossi, 1977
- Aegla parana Schmitt, 1942
- Aegla parva Bond-Buckup & Buckup, 1994
- Aegla castro Schmitt, 1942
- Aegla schmitti Hobbs III, 1979
- Aegla cavernicola Türkay, 1972
- Aegla strinatii Türkay, 1972
- Aegla saltensis Bond-Buckup & Jara in Bond-Buckup et al., 2010
クレードD - ウルグアイ川流域からラプラタ川流域西部
- Aegla marginata Bond-Buckup & Buckup, 1994
- Aegla odebrechtii (Müller, 1876)
- Aegla singularis Ringuelet, 1948
- Aegla platensis Schmitt, 1942
- Aegla rossiana Bond-Buckup & Buckup, 1994
- Aegla uruguayana Schmitt, 1942
- Aegla intercalata Bond-Buckup & Buckup, 1994
- Aegla prado Schmitt, 1942
- Aegla violacea Bond-Buckup & Buckup, 1994
- Aegla humahuaca Schmitt, 1942
- Aegla sanlorenzo Schmitt, 1942
- Aegla septentrionalis Bond-Buckup & Buckup, 1994
- Aegla jujuyana Schmitt, 1942
- Aegla pomerana Bond-Buckup & Buckup in Bond-Buckup et al., 2010
- Aegla brevipalma Bond-Buckup & Santos in Santos et al., 2012
- Aegla oblata Bond-Buckup & Santos in Santos et al., 2012
クレードE - ウルグアイ川流域
- Aegla renana Bond-Buckup & Santos in Santos et al., 2010
- Aegla spinipalma Bond-Buckup & Buckup, 1994
- Aegla leptochela Bond-Buckup & Buckup, 1994
- Aegla muelleri Bond-Buckup & Buckup in Bond-Buckup et al., 2010
- Aegla inconspicua Bond-Buckup & Buckup, 1994
- Aegla franciscana Buckup & Rossi, 1977
- Aegla serrana Buckup & Rossi, 1977
- Aegla ligulata Bond-Buckup & Buckup, 1994
- Aegla longirostri Bond-Buckup & Buckup, 1994
- Aegla grisella Bond-Buckup & Buckup, 1994
- Aegla obstipa Bond-Buckup & Buckup, 1994
- Aegla inermis Bond-Buckup & Buckup, 1994
- Aegla itacolomiensis Bond-Buckup & Buckup, 1994
- Aegla plana Buckup & Rossi, 1977
- Aegla leachi Bond-Buckup & Buckup in Santos et al., 2012

他に次の種がある。

Aegla manuinflata Bond-Buckup & Santos in Santos et al., 2009
Aegla franca Schmitt, 1942
Aegla lata Bond-Buckup & Buckup, 1994
Aegla microphthalma Bond-Buckup & Buckup, 1994
Aegla intermedia Girard, 1855

次の2種は野生絶滅状態にあると考えられる。

Aegla concepcionensis Schmitt, 1942
Aegla expansa Jara, 1992

化石種

Haumuriaegla glaessneri
- シェビオット (ニュージーランド)の近郊、Haumurian（白亜紀後期）の層から発見されている[11]。最初に発見された化石種であり、発見当時は唯一の海生種だった。
Protaegla miniscula
- メキシコのテペクシ・デ・ロドリゲス近郊、Tlayúa Formation（アルビアン、白亜紀前期）から発見されている[12]。

進化

本科は約7500万年前に海で進化したとされ[2]、漸新世に南米の太平洋側から淡水環境に進出したと考えられている。

脚注

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.
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. Springer. pp. 277–301. doi:10.1007/978-3-540-70624-3_11. ISBN 978-3-540-70624-3
Sandro Santos, Georgina Bond-Buckup, Ludwig Buckup, Marcos Pérez-Losada, Maegan Finley & Keith A. Crandall (2012). “Three new species of Aegla (Anomura) freshwater crabs from the upper Uruguay River hydrographic basin in Brazil”. Journal of Crustacean Biology 32 (4): 529–540. doi:10.1163/193724012X635935.
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.
Pérez-Losada, Marcos and Bond-Buckup, Georgina and Jara, Carlos G and Crandall, Keith A (2004). “Molecular systematics and biogeography of the southern South American freshwater “crabs” Aegla (Decapoda: Anomura: Aeglidae) using multiple heuristic tree search approaches”. Systematic Biology 53 (5): 767-780.
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”. Zootaxa Suppl. 23: 131–137.
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. doi:10.1080/00288306.1984.10422305.
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.

外部リンク

Aegla rostrata / Río San Pedro / Región de los Ríos / Chile - YouTube

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[1] 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.

[GBB08-2] 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.

[3] 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.

[4] 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.

[5] 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.

[6] 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. Springer. pp. 277–301. doi:10.1007/978-3-540-70624-3_11. ISBN 978-3-540-70624-3

[Santos-7] Sandro Santos, Georgina Bond-Buckup, Ludwig Buckup, Marcos Pérez-Losada, Maegan Finley & Keith A. Crandall (2012). “Three new species of Aegla (Anomura) freshwater crabs from the upper Uruguay River hydrographic basin in Brazil”. Journal of Crustacean Biology 32 (4): 529–540. doi:10.1163/193724012X635935.

[Bueno-8] 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.

[9] Pérez-Losada, Marcos and Bond-Buckup, Georgina and Jara, Carlos G and Crandall, Keith A (2004). “Molecular systematics and biogeography of the southern South American freshwater “crabs” Aegla (Decapoda: Anomura: Aeglidae) using multiple heuristic tree search approaches”. Systematic Biology 53 (5): 767-780.

[10] 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”. Zootaxa Suppl. 23: 131–137.

[11] 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. doi:10.1080/00288306.1984.10422305.

[12] 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.