High levels of site fidelity in movement patterns of Southern Rock Lobster (Jasus edwardsii) in Victoria, Australia

Figures & data

Figure 1. Movement dynamics of Jasus edwardsii between zones and sub-regions within Victoria, Australia Solid black line represents border between Western and Eastern zones.

Figure 2. Distance travelled (km) by Jasus edwardsii based on each capture-recature location in Victoria.Numbers above bars reflect recaptures.

Figure 3. Distance travelled (km) versus Time-at-large (days) by Jasus edwardsii in Victoria.

Figure 4. (A–D) Movement patterns of Jasus edwardsii in Victoria by region (A), depth (B) size (C) and sex and reproductive condition (D). Median values are indicated by the horizontal bar; length of the box is the inter-quartile range; whiskers represent quartiles; circles are data points; and diamonds are the mean.

Figure 5. Movement patterns of Jasus edwardsii in Victoria by depth.

Table 1. Results from the dredge function assessing the effects of variables on Jasus edwardsii over 5 km.

Intercept	Sex/Repro	Depth	Region	Size	df	LL	AICc	ΔAICc	wAICc
2.355		+	+	+	12	−547.83	1120.3	0.0	0.60
2.362		+	+		10	−550.90	1122.3	1.9	0.23
2.293	+	+	+	+	15	−546.19	1123.4	3.1	0.13
2.286	+	+	+		13	−549.31	1125.4	5.1	0.05
2.786		+		+	7	−569.35	1152.9	32.6	0.00
2.783		+			5	−571.65	1153.4	33.1	0.00
2.692	+	+		+	10	−567.53	1155.5	35.2	0.00
2.675	+	+			8	−569.84	1156.0	35.6	0.00
2.751	+		+	+	12	−585.74	1196.2	75.8	0.00
2.737			+	+	9	−589.45	1197.3	77.0	0.00
2.73	+		+		10	−589.25	1199.0	78.6	0.00
2.737			+		7	−592.66	1199.6	79.2	0.00
3.14	+			+	7	−614.86	1244.0	123.6	0.00
3.161				+	4	−618.88	1245.8	125.5	0.00
3.085	+				5	−617.94	1246.0	125.7	0.00
3.134					2	−621.65	1247.3	127.0	0.00

Note: df, degree of freedeom; LL, log likelihood; AIC_c, Akaike’s information criterion corrected for small sample size; ΔAIC_c, difference in AIC_c between the current and the top-ranked model; wAIC_c, model probability.

Table 2. Estimated coefficients (β) and their standard errors (SE) for each variable and factor, t-values of factors included in the top-ranked model (indicated for each variable).

	β	SE	t-value
Intercept	2.293	0.265	8.654
Warrnambool	0.599	0.099	6.056
Apollo Bay	0.428	0.123	3.492
Queenscliff	0.422	0.105	4.022
San Remo	−0.277	0.794	−0.349
Lake Entrance	−0.041	0.230	−0.177
5–20 km	−0.042	0.253	−0.168
20–50 km	0.269	0.247	1.086
>50 km	0.832	0.245	3.400
Medium	−0.003	0.078	−0.033
Large	−1.386	0.564	−2.456
Setosed	0.010	0.115	0.088
Berried	−0.044	0.181	−0.241
Male	0.129	0.102	1.266

Note: Baselines are Portland, <5 m, small, and unsetose for Region, Depth, Size, Sex/Reproductive condition respectively.