Diel movement and home range estimation of Walleye (Sander vitreus) within a no-take urban fishery

Figures & data

Table 1. Long-term gill net data for Walleye collected in Onondaga Lake (May–October; 2005–2012).

Year	2005	2006	2007	2008	2009	2010	2011	2012
Total hours fished	26.2	18.9	12	82	66	85	58	52.5
No. of Walleye captured	109	81	17	163	204	215	197	113
CPUE^1 (fish per hour)	4.2	4.3	1.5	2.0	3.1	2.5	3.4	2.2
Mean length	578	616	624	564	565	548	550	557
Standard deviation	62	59	46	48	48	48	47	45
Min length (mm)	419	365	518	413	457	437	435	322
Max length (mm)	707	726	685	684	696	733	775	688

¹ CPEU, catch per unit effort.

Figure 1. Map of Onondaga Lake, Syracuse, New York. * indicates passive receiver locations.

Table 2. Tag information for Walleye collected in Onondaga Lake.

			Location surveys			24-h surveys		Passive receiver data
Fish ID	Length	Date of last location	2010	2011	May 2012	2010	2011	2010 Outlet	2011 Outlet	2011 Inner Harbor	2011 Nine Mile Crk.
62	580	3 Aug. 2010 (dead)	2	–	–	1	–	–	–	–	–
63*^+	465	31 May 2012	11	8	1	7	1	12	8	–	–
64*	527	10 Nov. 2010	10	–	–	2	–	10	–	–	–
66*^+	546	17 Oct. 2011	11	10	–	3	–	3	1	1	–
70*^+	534	15 May 2012	10	10	1	1	1	6	–	–	–
78*	540	5 Aug. 2011	6	2	–	–	–	19	14	–	–
65*	501	20 July 2011	10	5	–	1	–	1	1	–	–
68^+	507	26 Sept. 2011	5	6	–	1	1	–	–	–	–
69	644	27 May 2010	1	–	–	1	–	–	–	–	–
71*^+	622	31 May 2012	9	7	1	1	1	–	–	–	–
77	523	1 Oct. 2010 (dead)	6	–	–	–	–	–	–	–	–
79	573	10 June 2010 (dead)	2	–	–	–	–	–	–	–	–
81*	556	26 Sept. 2011	7	7	–	1	–	11	1	–	–
97	520	3 Aug. 2011	2	–	–	–	–	1	–	1	–
103	579	1 Sept. 2010	3	–	–	2	–	5	–	–	–
105	548	3 Aug. 2010 (dead)	1	–	–	–	–	1	–	–	–
119^+	510	31 May 2012	2	7	1	1	2	8	–	–	–
124	525	17 Oct. 2011	–	5	1	–	–	–	3	–	–
125^+	575	31 May 2012	–	11	1	–	2	–	1	–	4
126^+	552	26 Sept. 2011	–	8	–	–	2	–	5	–	–
131^+	515	26 Sept. 2011	–	6	–	–	–	–	12	6	–
142	548	31 May 2012	–	5	1	–	1	–	2	–	–
102	703	26 Sept. 2011	–	7	–	–	–	–	–	–	–
114^+	528	31 May 2012	–	7	1	–	1	–	22	7	–
115^+	531	31 May 2012	–	8	1	–	1	–	4	45	–
129^+	516	6 Oct. 2011	–	9	–	–	–	–	–	–	–
109	556	17 Oct. 2011	–	8	–	–	–	–	–	–	–
111^+	522	15 May 2012	–	7	1	–	–	–	7	–	–
112^+	534	15 May 2012	–	6	1	–	1	–	3	–	–

Notes: Fish denoted with ‘*’ had home ranges calculated in 2010 and those denoted with a ‘⁺’ had home ranges calculated in 2011.

The number of detection days observed for each fish according to survey type and sampling year are displayed.

Figure 2. Passive receiver detections of tagged Walleye observed in the Onondaga Lake outlet (2010–2011). 95% confidence intervals are displayed.

Table 3. Total and straight-line distance measurements for Walleye tracked in Onondaga Lake in 2010.

		Fish #1			Fish #2
Date	Search time (h)	ID	Total distance (m)	Straight-line distance (m)	ID	Total distance (m)	Straight-line distance (m)	Average distance travelled per hour
3 June 2010	24	63	4879	486	62	6652	1214	240
16 June 2010	12	78	5718	3652	81	3598	1535	388
1 July 2010	24	68	6323	3891	70	5007	324	236
13 July 2010	24	64	5426	1366	66	5413	933	226
28 July 2010	24	63	7819	589	103	1880	70	202
10 Aug. 2010	24	63	10790	1041	65	2183	55	270
24 Aug. 2010	24	63	6566	2614	103	3655	182	213
10 Sept. 2010	24	66	9172	617	71	7858	1918	355
22 Sept. 2010	24	63	4786	489				100
4 Oct. 2010	24	64	5364	3182	66	7714	1792	272
18 Oct. 2010	24	63	8532	2137	119	4795	640	278
2 Nov. 2010	12	63	2340	679				195

Note: Surveys under 24 h were shortened because of hazardous weather conditions.

Table 4. Total and straight-line distance measurements for Walleye tracked in Onondaga Lake in 2011.

		Fish #1			Fish #2
Date	Search time (h)	ID	Total distance (m)	Straight-line distance (m)	ID	Total distance (m)	Straight-line distance (m)	Average distance travelled per hour
20 May 2011	8	112	1799	138	126	1920	943	232
6 June 2011	24	112	5605	1081	129	7703	1252	277
20 June 2011	12	119	4682	1381				195
11 July 2011	24	115	1063	504				44
25 July 2011	9	119	2165	333				90
8 Aug. 2011	24	70	1607	175	142	6866	729	177
28 Aug. 2011	24	68	3373	435	114	6314	244
28 Aug. 2011	24	126	3098	35				178
21 Sept. 2011	24	63	5929	914	125	3233	522	191
10 Oct. 2011	24	71	3069	1384	129	3089	125	128
24 Oct. 2011	6	125	1127	520	129	3184	1283	359

Note: Surveys under 24 h were shortened because of hazardous weather conditions.

Figure 3. Mean distance travelled (m∙h⁻¹) by tagged Walleye in Onondaga Lake (May–November, 2010–2011) during daily time periods. 95% confidence intervals are displayed.

Figure 4. Mean depth (m) utilized by tagged Walleye in Onondaga Lake (May–November, 2010–2011) during daily time periods. 95% confidence intervals are displayed.

Figure 5. Home range maps for four Walleye, showing range overlap in Onondaga Lake between in 2010 and 2011.