The Life Cycle of A Blue Crab in Florida | 水產百科網
Thefemalecanretainspermforayearormorebeforeextrudingeggs.Thisallowscrabsmatinginfallorwintertowaituntilwarmerweathertohatchtheireggs.
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...
5 Things You Didn't Know About Blue Crab | 水產百科網
Blue Crab Identification | 水產百科網
BLUE CRAB INFORMATION SHEET | 水產百科網
Blue Crab Life Cycle | 水產百科網
Blue Crab Spawning | 水產百科網
Pregnant Blue Crabs | 水產百科網
State moves to allow increased imports of egg | 水產百科網
Study shows pregnant blue crabs at risk | 水產百科網
The Life Cycle of A Blue Crab in Florida | 水產百科網
【真綿蟹Dromidiopsis dormia】綿蟹科 (Dromiidae)
水產分類:澎湖的蟹類中文名稱:真綿蟹學名:Dromidiopsisdormia科別名稱:綿蟹科(Dromiidae)命名學者:(Linnaeus1763)
【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
【毛掌梯形蟹Trapezia cymodoce】梯形蟹科 (Trapeziidae)
水產分類:澎湖的蟹類中文名稱:毛掌梯形蟹學名:Trapeziacymodoce科別名稱:梯形蟹科(Trapeziidae)命名學者:(Herbst1799)