<p>Proposed Journal: Polar Biology – Original paper</p><p>Temporal variation in the diet of Gentoo penguins at the Falkland Islands</p><p>Jonathan M Handley1*, Alastair M M Baylis2,3, Paul Brickle4,5, Pierre Pistorius1</p><p>1 DST/NRF Centre of Excellence, Percy FitzPatrick Institute of African Ornithology, Department of Zoology, Nelson Mandela Metropolitan University, South Campus, Port Elizabeth 6031, South Africa *[email protected] Tel: +27 (0)83 291 4690 Fax: +27 (0)41 504 2317</p><p>2 Falklands Conservation, P.O. Box 26, Stanley FIQQ 1ZZ, Falkland Islands</p><p>3 Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Warrnambool, 3280, Australia</p><p>4South Atlantic Environmental Research Institute, Box 609, Stanley FIQQ 1ZZ, Falkland Islands</p><p>5Falkland Islands Government Fisheries Department, P.O. Box 598, Stanley FIQQ 1ZZ, Falkland Islands Online Resource 1 Regression equations for relationships between hard part remain (LRL = lower rostral length; LHL = lower hood length; oto = otolith length) and squid or fish, (1) length (DML = dorsal mantle length; TL = total length) and (2) mass (M) for prey taxa found in gentoo penguin stomach contents at Cow Bay, Falkland Islands. </p><p>Authors: A) Clarke (1986). B) Xavier & Cherel (2009). C) Clausen & Huin (2002). D) This study. E) Huin (2005)</p><p>Table 1 Length</p><p>Name Hard part Reconstituted i Rang e Species Common Code (FIFD) (mm) N (measured) Length ii r2 Authors Squid Gonatus antarcticus NA GON NA NA DML (mm): DML = 12.82 + 19.02(LRL) NA A Loligo gahi Loligo/Patagonian squid LOL NA 446 DML (mm): ln(DML) = 4.23 + 1.01ln(LRL) NA B 0.4 - Moroteuthis ingens Greater hooked squid DML (cm): DML = (LRL x 3.1161) + 7.9934 ING 7 367 0.87 C Semirossia patagonica Mickey mouse/Bobtail squid SRP 1.5 1 DML (mm): LHL x 13.45 NA D Fish 1.3 - Champsocephalus esox Icefish CHE 2.5 6 TL (cm): 7.7785 + (oto x 4.9837) 0.97 D 3.1 - Cottoperca gobio Frogmouth TL (cm): 0.2092 x (oto2.6871) CGO 6.3 52 0.9 C 11 - Dissostichus eleginoides Patagonian toothfish TOO 17.6 20 TL (cm): 3.5358 x (oto1.2189) 0.74 D 11 - Macruronus magellanicus Whiptail hake/Hoki WHI 25.2 12 PLiii (cm): 0.4117 x (oto1.4208) 0.96 D Micromesistius australis Southern blue whiting BLU NA NA TL (cm): (oto x 2.5405) – 2.1599 NA D 0.8 - Rock cod Patagonotothen ramsayii PAR 8.8 1131 TL (cm): (oto x 4.2731) – 4.9164 0.88 C Patagonotothen tessellata Rock cod PTE NA NA TL (cm): oto x 2.9174 NA E 1.4 - Salilota australis Red cod TL (cm): 0.5928 x (oto1.5095) BAC 4.9 12 0.87 C 0.7 - Sprattus fugensis Falkland herring TL (cm): (oto x 5.7029) + 4.8981 SAR 4.9 649 0.79 C Table 2 Mass</p><p>Name Hard part Reconstituted A N Species Common Code (FIFD) Range (mm) (measured) Mass (g) r2 Authors Squid ln(M) = 0.086 + Gonatus antarcticus NA GON NA NA 2.13ln(LRL) NA A ln(M) = 2.25 + Loligo gahi Loligo/Patagonian squid LOL NA 446 2.39ln(LRL) NA B M = (LRL x 2.7799) x Moroteuthis ingens Greater hooked squid ING 0.4 - 7 367 4.1559 NA E Semirossia patagonica Mickey mouse/Bobtail squid SRP 1.5 1 M = LHL x 1.45 NA D Fish D Champsocephalus esox Icefish CHE 1.3 - 2.5 6 M = 8.8399 x (oto1.604) 0.97 C M = 3.77 x (10-5 x Cottoperca gobio Frogmouth CGO 3.1 - 6.3 52 oto8.6794) 0.9 D Dissostichus eleginoides Patagonian toothfish TOO 11 - 17.6 20 M = 0.6791 x (oto3.5098) 0.86 D Macruronus magellanicus Whiptail hake/Hoki WHI 11 - 25.2 12 M = 0.0035 x (oto4.1798) 0.97 D 3.9605 Micromesistius australis Southern blue whiting BLU NA NA M = 0.0109 x (oto ) 0.88 C 4.3 Patagonotothen ramsayii PAR 0.8 - 8.8 1131 M = 0.0306 x (oto ) 0.82 E 3.2893 Patagonotothen tessellata PTE NA NA M = 0.1585 x (oto ) NA C 4.4758 Salilota australis Red cod BAC 1.4 - 4.9 12 M = 0.0025 x (oto ) 0.93 C 2.7245 Sprattus fugensis Falkland herring SAR 0.7 - 4.9 649 M = 4.7038 x (oto ) 0.78 C i = All input values are in mm. ii = Note, units for output values of reconstituted length vary; either in millimetres or centimetres as in parentheses. iii = Length here refers to the preanal length (PL) measure. </p>