The Life Cycle of A Blue Crab in Florida | 水產百科網
Eventhisearlyinlife,crabshaveahardoutershell(exoskeleton).Inordertogrowandchangestages,thelarvamustmolt,whichmeansshedorcastoffitsshell.
Overgeous (egg-bearing) female blue crabThe female can retain sperm for a year or more before extruding eggs. This allows crabs mating in fall or winter to wait until warmer weather to hatch their eggs. Eggs are fertilized as they pass out of the crabs body and are deposited under the apron. The apron is actually the curled-under abdomen, and has small appendages[1] to which the eggs attach. Egg masses have an average of two million eggs, and can have up to eight million eggs. At first the egg mass appears orange due to the high amount of yolk in each egg, then turns brown as yolk is consumed and eyes develop. After one to two weeks the eggs hatch into zoea larvae.
Thus the cycle of life is complete. Only one out of every one million (0.0001%) eggs survives to become an adult. Predators, adverse environmental conditions, and disease all take their toll on the millio...
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【環紋蟳Charybdis annulata】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:環紋蟳學名:Charybdisannulata科別名稱:梭子蟹科(Portunidae)命名學者:(Fabricius1798)
【遠海梭子蟹Portuns pelagicus】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:遠海梭子蟹學名:Portunspelagicus科別名稱:梭子蟹科(Portunidae)命名學者:(Linnaeus1766)
【異齒蟳Charybdis anisodon】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:異齒蟳學名:Charybdisanisodon科別名稱:梭子蟹科(Portunidae)命名學者:(DeHaan1850)
【安汶蟳Charybdis amboinensis】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:安汶蟳學名:Charybdisamboinensis科別名稱:梭子蟹科(Portunidae)命名學者:Leene1938
【武士蟳Charybdis miles】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:武士蟳學名:Charybdismiles科別名稱:梭子蟹科(Portunidae)命名學者:(DeHaan1835)
【雙斑蟳Charybdis bimaculata】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:雙斑蟳學名:Charybdisbimaculata科別名稱:梭子蟹科(Portunidae)命名學者:(Miers1886)
【欖綠青蟳Scylla olivacea】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:欖綠青蟳學名:Scyllaolivacea科別名稱:梭子蟹科(Portunidae)命名學者:(Herbst1796)
【晶瑩蟳Charybdis lucifera】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:晶瑩蟳學名:Charybdislucifera科別名稱:梭子蟹科(Portunidae)命名學者:(Fabricius1798)
【銀光梭子蟹Portunus argentatus】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:銀光梭子蟹學名:Portunusargentatus科別名稱:梭子蟹科(Portunidae)命名學者:(White1847)
【繡斑蟳Charybdis feriatus】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:繡斑蟳學名:Charybdisferiatus科別名稱:梭子蟹科(Portunidae)命名學者:(Linnaeus1758)
【圓形狼牙蟹Lupocyclus rotundatus】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:圓形狼牙蟹學名:Lupocyclusrotundatus科別名稱:梭子蟹科(Portunidae)命名學者:AdamsandWhite1849
【達氏短槳蟹Thalamita danae】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:達氏短槳蟹學名:Thalamitadanae科別名稱:梭子蟹科(Portunidae)命名學者:Stimpson1858
【漢氏梭子蟹Portunus haanii】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:漢氏梭子蟹學名:Portunushaanii科別名稱:梭子蟹科(Portunidae)命名學者:Stimpson1858
【雙額短槳蟹Thalamita sima】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:雙額短槳蟹學名:Thalamitasima科別名稱:梭子蟹科(Portunidae)命名學者:H.MilneEdwards1834
【變態蟳Charybdis variegata】梭子蟹科 (Portunidae)
水產分類:澎湖的蟹類中文名稱:變態蟳學名:Charybdisvariegata科別名稱:梭子蟹科(Portunidae)命名學者:(Fabricius1798)