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Table 6 Eggcase dimensions reported in several geographical areas by latitudinal clines

From: Morphological descriptions of the eggcases of skates (Rajidae) from the central-western Mediterranean, with notes on their distribution

Species Eggcase length (mm) Eggcase width (mm) Area References
D. nidarosiensis 182–260 95–120 Atlantic (Norwegian Sea) [56]
182–260 92–113 Atlantic (North Sea) [57]
153–177 (170.2 ± 9.8) 61.8–80.5 (74.8 ± 7.5) Mediterranean (Sardinia) Present study
D. oxyrinchus 133 79.5 Atlantic (British waters) [58]
128–133 74–101 Atlantic (British waters) [59]
120–235 58–120 Atlantic (North Sea) Bor [57]
102–126 (112 ± 10.4) 60–66 (63.8 ± 2.6) Atlantic (British waters) [30]
100–150 Mediterranean/Atlantic [3]
91.6–116.2 (103.8 ± 5.3) 48.9–67.5 (57 ± 4.0) Mediterranean (Sardinia) Present study
35–46 (38.4 ± 0.7) 17–28 (24.2 ± 0.2) Mediterranean (Tunisia) [23]
140 Mediterranean (Naples) [21]
L. melitensis 42.3–45 (44.1 ± 1.0) 22.4–26.0 (23.9 ± 1.4) Mediterranean (Sentinelle Bank) Present study
R. asterias 30–45 Mediterranean [3]
39.7–55.4 (48.3 ± 3.0) 22.4–40.5 (33.7 ± 2.6) Mediterranean (Sardinia) Present study
45 Mediterranean (Naples) [21]
R. brachyura 122 ± 5 68 ± 4 Atlantic (Portuguese waters) [38]
136 76 Atlantic (British waters) [60]
128.4 78.5 Atlantic (British waters) [58]
115–143 72–90 Atlantic (British waters) [59]
82–132.2 (108.6 ± 10.1) 32.7–86.4 (65.4 ± 11.7) Atlantic (British waters) [30]
121 79 Atlantic (North Sea) [61]
115 70 Atlantic (North Sea) [62]
120 Mediterranean/Atlantic [3]
115–143 Mediterranean [15]
113–133 (119.3 ± 4.9) 64.7–72.2 (69.5 ± 2.3) Mediterranean (Sardinia) Present study
105 Mediterranean (Naples) [21]
R. clavata 65 ± 5 48 ± 5 Atlantic (Portuguese waters) [38]
80 50 Atlantic (France) [63]
63–90 (74.9) 49–68.5 (67.1) Atlantic (British waters) [58]
60–90 50–70 Atlantic (British waters) [59]
32.7–83.3 (67.2 ± 10) 32.7–69 (37 ± 8.2) Atlantic (British waters) [30]
70 50 Atlantic (North Sea) [62]
60–90 Mediterranean/Atlantic [3]
61–66 Mediterranean (France) [22]
62.5–67.5 (64.1 ± 1.9) 41.7–47.4 (43.8 ± 2.0) Mediterranean (Sardinia) Present study
70–78 (75) 50–54 (52) Mediterranean (Tunisia) [64]
60 Mediterranean (Naples) [21]
R. miraletus 48–52 Atlantic (Senegal) [65]
46 ± 3 26 ± 2 Atlantic (Portuguese waters) [38]
<50 Atlantic (South Africa) [66]
45–52 Mediterranean/Atlantic [3]
41.8–56.5 (47.4 ± 4.0) 22.8–29.2 (24.7 ± 1.7) Mediterranean (Sardinia) Present study
42–47 Mediterranean (Tunisia) [67]
59 Indian Ocean [45]
R. polystigma 35–46 Mediterranean [3]
56.6–69.2 (62.3 ± 4.3) 33.9–44.3 (37.9 ± 2.9) Mediterranean (Sardinia) Present study