小藍蟹：修订间差异
（没有差异）
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2010年6月21日 (一) 00:06的版本
| 小藍蟹 | ||||||||||||||
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| 科學分類 | ||||||||||||||
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| 二名法 | ||||||||||||||
| Callinectes similis A. B. Williams, 1966[1] |
小藍蟹（學名Callinectes similis）是一種美青蟹屬物種。[2]
特徵
小藍蟹最後的步足扁平，適合游泳。公蟹可以闊達12.2厘米，雌蟹則闊9.5厘米。[3]
小藍蟹的最為接近Callinectes danae[4]及Callinectes ornatus。Callinectes danae也在墨西哥灣出沒，更南至南里奧格蘭德州；[5]而Callinectes ornatus則分佈在北卡羅來納州至南里奧格蘭德州。[6]C. similis is most easily separated from C. danae and C. ornatus by the form of the first and second pleopods in males [7]. It can be told apart from the more distantly related C. sapidus by the number of teeth on the front edge of the carapace, there being six in C. similis and only two in C. sapidus [7].
分佈
Callinectes similis is found in the Atlantic Ocean, Caribbean Sea and Gulf of Mexico from the United States to Colombia. It reaches its northern limit near Delaware Bay [3]. There has been considerable confusion between the various species of Callinectes, and it now appears that all individuals reported as C. danae and C. ornatus from the Gulf of Mexico (with the exception of parts of Florida) are actually C. similis [7].
生態
C. similis lives in marshes and estuaries, being the dominant crab in open bays. The species is limited to salinities of at least 15‰, and temperature may also affect reproduction [3].
The diet of C. similis consists of a variety of foodstuffs, including plants, fish, polychaetes, other crustaceans including Farfantepenaeus aztecus and Portunus gibbesii, molluscs such as Mulinia lateralis, and detritus [2].
Spawning takes place in the spring and fall, with females returning to estuaries to release their eggs [3]. Ovigerous (egg–carrying) females carry an average of more than 250,000 eggs [2].
漁業
Although it is not usually targeted because of its relatively small size, C. similis is sometimes caught alongside C. sapidus [3].
參考
- ^ Callinectes similis. ITIS.
- ^ 2.0 2.1 2.2 Sergio Chazaro–Olvera, Arturo Rocha–Ramirez & Ramiro Roman–Contreras. Observations on feeding, maturity and fecundity of Callinectes similis Williams, 1966, on the central continental shelf off Veracruz, Gulf of Mexico. Crustaceana. 2000, 73 (3): 323–32. doi:10.1163/156854000504417.
- ^ 3.0 3.1 3.2 3.3 3.4 Melany P. Puglisi. Callinectes similis. Smithsonian Marine Station at Fort Pierce. 2008-10-01.
- ^ Rafael Robles, Christoph D. Schubart, Jesús E. Conde, Carlos Carmona-Suárez, Fernando Alvarez, José L. Villalobos & Darryl L. Felder. Molecular phylogeny of the American Callinectes Stimpson, 1860 (Brachyura: Portunidae), based on two partial mitochondrial genes. Marine Biology. 2007, 150: 1265–74. doi:10.1007/s00227-006-0437-7.
- ^ M. M. Chacur & M. L. Negreiros-Fransozo. Spatial and seasonal distribution of Callinectes danae (Decapoda, Portunidae) in Ubatuba Bay, São Paulo, Brazil. Journal of Crustacean Biology. 2001, 21: 414–25. doi:10.1651/0278-0372(2001)021[0414:SASDOC]2.0.CO;2.
- ^ Melany P. Puglisi. Callinectes ornatus. Smithsonian Marine Station at Fort Pierce. 2008-08-01.
- ^ 7.0 7.1 7.2 Perry and Larsen. Guide to Shelf Invertebrates, Gulf of Mexico (PDF). Gulf States Marine Fisheries Commission. 2004.