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36 S h a r k s a n d R a y s o f B o r n e o Bluntnose Sixgill Shark Hexanchus griseus (Bonnaterre, 1788) 2 1 3 4 Other names: Sixgill Shark, Bull Shark, Mud Shark, Cow Shark (English), Cucut Meong, Hiu Tahu Putih (Indonesian), Yu Insang Enam (Malaysian) Identifying features: 1 6 gill slits 2 small, greenish eye 3 single dorsal fin 4 dorsal fin usually plain (occasionally with narrow white posterior margin) 5 snout broadly rounded (viewed ventrally) 6 lower jaw with 6 rows of large, comb-like teeth Size: To at least 480 cm; males and females mature at 285–315 and 420 cm respectively; born at 65–70 cm. Distribution: Almost circumglobal in tropical and temperate waters. Habitat and biology: Adults normally found near the bottom in deepwater to at least 2500 m; young sometimes enter shallow coastal bays. Viviparous, with yolk-sac dependency; gives birth to litters of 47–108 pups. Diet includes bony fishes, elasmobranchs, cephalopods and crustaceans, and adults also feed on larger bony fishes (e.g. billfishes), cetaceans and seals. Utilisation: Caught rarely so of minimal commercial value. Conservation status: IUCN Red List: Near Threatened. Local synonyms: None. References: Ebert (2003); White & Dharmadi (2010).
Page 1 and 2: SHARKS and RAYS of BORNEO Peter R.
Page 3 and 4: © CSIRO 2010 All rights reserved.
Page 5 and 6: iv Contents Foreword . . . . . . .
Page 8 and 9: Introduction The region The island
Page 10 and 11: I n t r o d u c t i o n Shark fish
Page 12 and 13: I n t r o d u c t i o n National S
Page 14 and 15: I n t r o d u c t i o n Table 2 Co
Page 16 and 17: How to use this book This book is d
Page 18 and 19: H o w t o u s e t h i s b o o k 11
Page 20 and 21: G l o s s a r y 13 transferring spe
Page 22 and 23: G l o s s a r y 15 histotrophy - fo
Page 24 and 25: G l o s s a r y 17 plain - uniforml
Page 26 and 27: G l o s s a r y 19 teeth - hard out
Page 28 and 29: G l o s s a r y 21 upper origin dor
Page 30 and 31: R u n n i n g h e a d 23 Key to fam
Page 32 and 33: K e y t o f a m i l i e s a n d g e
Page 44 and 45: H e x a n c h i f o r m e s 37 5 Ve
Page 46 and 47: S q u a l i f o r m e s 39 2 Ventra
Page 48 and 49: S q u a l i f o r m e s 41 2 Ventra
Page 50 and 51: S q u a t i n i f o r m e s 43 Util
Page 52 and 53: H e t e r o d o n t i f o r m e s 4
Page 54 and 55: O r e c t o l o b i f o r m e s 47
Page 70 and 71: L a m n i f o r m e s 63 Utilisatio
Page 72 and 73: L a m n i f o r m e s 65 Utilisatio
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P r i s t o i d e i 141 Conservatio
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P r i s t o i d e i 143 seriously d
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P r i s t o i d e i 145 6 Caudal fi
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R h i n o i d e i , R h y n c h o b
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T o r p e d i n o i d e i 161 Diet
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T o r p e d i n o i d e i 163 Like
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T o r p e d i n o i d e i 165 yolk-
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T o r p e d i n o i d e i 167 Utili
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T o r p e d i n o i d e i 169 a mod
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R a j o i d e i 171 bottoms. Ovipar
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R a j o i d e i 173 Similar forms o
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R a j o i d e i 175 shelf. Oviparou
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R a j o i d e i 177 Habitat and bio
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R a j o i d e i 179 Conservation st
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M y l i o b a t o i d e i 181 biolo
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M y l i o b a t o i d e i 183 Austr
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M y l i o b a t o i d e i 185 possi
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M y l i o b a t o i d e i 187 Habit
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M y l i o b a t o i d e i 189 Distr
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M y l i o b a t o i d e i 193 and f
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M y l i o b a t o i d e i 211 25-26
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M y l i o b a t o i d e i 219 an un
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M y l i o b a t o i d e i 227 conti
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M y l i o b a t o i d e i 229 proba
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M y l i o b a t o i d e i 231 100 m
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M y l i o b a t o i d e i 237 Utili
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M y l i o b a t o i d e i 239 Vivip
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M y l i o b a t o i d e i 241 Utili
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M y l i o b a t o i d e i 243 bival
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M y l i o b a t o i d e i 251 tal s
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M y l i o b a t o i d e i 257 seas.
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M y l i o b a t o i d e i 259 crust
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M y l i o b a t o i d e i 261 perio
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M y l i o b a t o i d e i 265 commo
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C h i m a e r i f o r m e s 267 Con
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A c k n o w l e d g e m e n t s 269
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271 References Ahmad, A., Lim, A.P.
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R e f e r e n c e s 273 betreffende
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R e f e r e n c e s 275 the offshor
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277 Checklist of Borneo sharks and
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C h e c k l i s t o f s p e c i e s
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C h e c k l i s t o f s p e c i e s
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283 Scientific names index A acutus
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RS cu ine nitn i g f i c h en adm e
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S c i e n t i f i c n a m e s i n d
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E n g l i s h c o m m o n n a m e s
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E n g l i s h c o m m o n n a m e s
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293 Indonesian common names index C
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I n d o n e s i a n c o m m o n n a
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M a l a y s i a n c o m m o n n a m
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Sharks and Rays of Borneo This full
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