By Ruth H. Carmichael, Mark L. Botton, Paul K.S. Shin, Siu Gin Cheung

This publication stories major growth of clinical study on horseshoe crabs, together with features of evolution, genetics, ecology, inhabitants dynamics, basic biology and body structure, in the contemporary 10 years. It additionally highlights the rising matters on the topic of world-wide conservation threats, prestige and wishes. The contributions during this publication signify a part of an ongoing international attempt to extend info and proposal sharing to aid simple study and strengthen conservation for horseshoe crabs.

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Additional info for Changing Global Perspectives on Horseshoe Crab Biology, Conservation and Management

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In: Tanacredi JT, Botton ML, Smith DR (eds) Biology and conservation of horseshoe crabs. Springer, New York, pp 115–129, 2009) on local habitat requirements, this paper considers why the Delaware Bay is the epicenter of Limulus polyphemus abundance. The emphasis is on how its geologic and geographic characteristics are advantageous to Limulus. 5°N), only at Delaware Bay (38°40′ N to 39°20′ N) has it produced a population of millions of adult horseshoe crabs, unmatched anywhere. Why? It appears most likely that it was the interaction between the ecological generalist, Limulus polyphemus, and the exceptionally favorable environment that developed in the Delaware Bay area after the past great ice age.

Sea level rose rapidly during the initial melting of the ice shield and the ocean moved closer to Delaware. By 7,000– 5,000 years ago a long and narrow embayment, the proto-Delaware Bay, was approaching a recognizable shape (Custer 1984). , Chrzastowski 1986; Knebel et al. 1988; Fletcher et al. 1992). If other estuaries were developing at about the same rate along the Atlantic coast, as was the Georgia coast some 5,000 years ago (Henry 2009), then at least most of the coastal area to the south was also nearing environmental conditions in which Limulus could exist.

Carmichael 17 Bacteria and Fungi Identified on Horseshoe Crabs, Tachypleus gigas and Carcinoscorpius rotundicauda in the Laboratory .................................................................................... M. T. Eng, A. M. Abdel-Hadi 18 Marine Bacteria Associated with Horseshoe Crabs, Tachypleus gigas and Carcinoscorpius rotundicauda............................ 313 Noraznawati Ismail, Mohamad Faridah, Amirrudin Ahmad, Amirul Asyraf Alia’m, Oh Sheng Khai, Muhd Fawwaz Afham Mohd Sofa, and Azwarfarid Manca 19 Mating Tactics of the American Horseshoe Crab (Limulus polyphemus) .............................................................................

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