Territory Stories

Nature Territory



Nature Territory

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Newsletter of the Northern Territory Field Naturalists' Club Inc.


Northern Territory Field Naturalists' Club Inc.


Nature Territory; Nature Territory; E-Journals; PublicationNT




Made available via the Publications (Legal Deposit) Act 2004 (NT).; This publication contains many links to external sites. These external sites may no longer be active.




Natural history; Northern Territory Field Naturalists' Club; Periodicals

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Northern Territory Field Naturalists' Club Inc.

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Newsletter, October 2017

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Northern Territory Field Naturalists' Club Inc.



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Page 8 Nature Territory - October 2017 orangish speckles. Around Darwin, crabs l ive within the Rhizophora mangrove zone, and if you?re lucky enough to see one, they?re usually found waiting in ambush with their backs against the stilt roots of a tree like the one in the accompanying il lustration. Studies have shown that this species eats pretty much any small invertebrate it can catch, but generally crabs feed upon snails and other resident crabs (including crabs its own size). In local forests crabs have a penchant for tree-climbing snails such as the Angulate Ear Snail (Cassidula angulifera) and the Black Nerite (Nertia balteata). Broken shell fragments of the latter are often found in small piles near the lair or favoured hunting spot of crabs, indicating this ambush kil ler is not too far away. References: Cannicci, S., Ruwa, R. K., Giuggioli, M., & Vannini, M. (1998). Predatory activity and spatial strategies of Epixanthus dentatus (Decapoda: Oziidae), an ambush predator among the mangroves. Journal of Crustacean Biology, 18(1), pp. 57?63. Davie, P. J., Guinot, D., & Ng, P. K. (2015). Systematics and classif ication of Brachyura. Treatise on zoology?anatomy, taxonomy, biology. The Crustacea, 9, pp. 1049?1130. Vannini, M., Cannicci, S., & Fratini, S. (2001). Prey selection of Epixanthus dentatus (Crustacea: Brachyura: Eriphiidae) as determined by its prey remains. Journal of the Marine Biological Association of the United Kingdom, 81(3), pp. 455?459. Figure 2: Magnified view of the distinctive, forceps-shaped pincer of the aptly-named Mangrove Forceps Crab (Epixanthus dentatus).

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