Is the Megamouth Shark susceptible to mega-distortion…：是巨口鲨易大变形….pdf

RECORDS OF THE WESTERN AUSTRALIAN MUSEUM 007–020 (2012) 27 KEYWORDS: megamouth, long-term preservation, dimensional changes, ethanol preservation, formaldehyde ? xed. (WAM –001) was transported to Perth, then frozen and put on brief display before being preserved. Over six years later on 25 January 1995 it was placed on permanent public display at the Perth site of the Western Australian Museum (WAM), in a below-ground polyester resin glass-topped case, with the upper glass surface of the case level with the ground (Figure 1). Recent renovations at the Perth site necessitated the relocation of the Megamouth Shark specimen. The shark was removed from the below-ground case and relocated to the Western Australian Maritime Museum in Fremantle, approximately 20 km away. There it was placed in a custom made stainless steel tank with viewing portholes, for continued public display. The Megamouth Shark possesses soft and flabby muscle tissue and its skeleton is poorly calcified (Compagno 1988, 1990; Smale et al. 2002; Taylor et al. 1983; BAH personal observation of dissection of Megamouth #17), and similar observations were noted Is the Megamouth Shark susceptible to mega -distortion? Investigating the effects of twenty -two years of ? xation and preservation on a large specimen of Megachasma pelagios (Chondrichthyes: Megachasmidae) Brett A. Human 1,3 , Susan M. Morrison 1 and Ian D. MacLeod 2 1 Department of Aquatic Zoology, Western Australian Museum, Locked Bag 49, Welshpool DC, Western Australia 6986, Australia. 2 Western Australian Maritime Museum, Victoria Quay , Fremantle, Western Australia, 6160, Australia. 3 Deceased 2011. Corresponding author: Sue Mo rrison. Email: sue.******@ ABSTRACT – On 18 August 1988, the third reported Megamouth Shark ( Megachasma pelagios Taylor, Compagno and Struhsaker, 1983) became stranded on a beach in Western Australia. The m TL male shark (WAM –001) was preserved at t