The predominant predators of green crabs include fishes, birds, and larger decapods. Commercial fisheries for green crab have reduced its populations in parts of its native habitat.The Green Crab habitat areas are also inhabited by the following plants: Brown algae
E. D. Grosholz & G. M. Ruiz (1996). "Predicting the impact of introduced marine species: Lessons from the multiple invasions of the European green crab Carcinus maenas". Biological Conservation 78 (1-2): 59–66. doi: 10.1016/0006-3207(94)00018 Greg Klassen and Andrea Locke (2007).
The European Green Crab
"A biological synopsis of the European green crab, Carcinus maenas". Canadian Manuscript Report of Fisheries and Aquatic Sciences No. 2818. Fisheries and Oceans Canada.
A. McKnight, L. M. Mathres, R. Avery & K. T. Lee (2000). "Distribution is correlated with color phase in green crabs, Carcinus maenas (Linnaeus, 1758) in southern New England". Crustaceana 73 (6): 763–768. doi:10.1163/156854000504787
Gastropod is a snail with a large shell where the soft parts can withdraw completely:
From Europe, the green crab has spread its populations to Australia, South Africa and the Atlantic coast of the US. In 1989 it was first introduced to the Pacific coast in San Francisco, US, from where it has spread to northern California. The European Green Crab originally is from Europe. It is a small shore crab, measured about 3 inches across as adult. The top of its shell colors dark brown to dark green with small yellow patches, the bottom colors may be green, yellow, red, or orange. its colors depend on the amount of time the crab spends between molting stages. The distinguishing feature of the green crab is the array of five evenly spaced triangular spines on either side of the eyes, on the front end of the shell and the three rounded lobes between its eyes. FOOD CHAIN
Decapods are sea creatures with ten legs in the form of five pairs :
References: "A biological synopsis of the European green crab, Carcinus maenas". Canadian Manuscript Report of Fisheries and Aquatic Sciences No. 2818. Fisheries and Oceans Canada.
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