Open Access
Table 3
Measurements of Derogenes abba n. sp. from Hippoglossoides platessoides off Svalbard and Derogenes spp. first described from the Atlantic. *Diameter. 1Note that D. lacustris is a freshwater species.
| Species | Derogenes abba n. sp. | D. varicus sensu stricto | D. bohaiensis Qiu & Liang in Shen & Qiu, 1995 | D. crassus Manter, 1934 | D. infirmus (Linton, 1940) | D. lacustris 1 Tsuchida, Flores, Viozzi, Rauque & Urabe, 2021 |
|---|---|---|---|---|---|---|
| Host | Hippoglossoides platessoides | Salmo salar | Sebastes fuscescens, Pennahia argentata | Foetorepus agassizii | Cyclopterus lumpus | Galaxias maculatus 1 |
| Locality | Svalbard, Arctic Ocean | Bremanger, Norway, NEA | Yellow Sea and the Bo Hai Sea, China, NWA | Florida, USA, NWA | Massachusetts, USA, NWA | Lake Gutiérrez, Argentina |
| Source | Present study | Present study | [61] | [42] | [36] | [67] |
| Number | 14 | 16 | – | 1 | 3 | 13 |
| Body length | 1100–1450 (1150) | 1812–2661 (2276) | 782–1003 | 2268 | 2340–2520 | 495–859 |
| Body width | 370–450 (450) | 392–669 (528) | 255–323 | 882 | 700–660 | 131–273 |
| Forebody | 396–485 (483) | 739–937 (838) × 334–418 (385) | – | – | 940–1170 | – |
| Hindbody | 350–400 (390) | 698–930 (803) × 343–472 (382) | 187–327 | – | – | – |
| Preoral lobe length | 20–38 (25) | 57 (44–68) | – | – | – | – |
| Ventral sucker | 226–425 (350) × 210–430 (355) | 231–399 (353) × 268–434 (374) | 238–372* | 697* | 490–420 × 490 – 350 | 113–200 × 103–203 |
| Oral sucker | 95–180 (150) × 110–225 (160) | 223–335 (255) × 219–321 (247) | 153* | 285* | 290–240 × 290–310 | 55–95 × 60–108 |
| Pharynx | 61–97 (75) × 64–93 (75) | 79–112 (90) × 85–135 (101) | 51* | – | 70 × 110–100 | 28–50 × 35–60 |
| Sinus sac | 93–102 (95) × 84–99 (80) | 93–135 (120) × 106–120 (113) | 51–68 × 17–34 | – | – | – |
| Seminal vesicle | 56–80 (75) × 38–65 (54) | 46–80 (70) × 30–75 (45) | 68 × 51 | – | – | – |
| Left testis | 150–119 (154) × 84–110 (92) | 152–208 (180) × 128–165 (145) | 51 × 68 | – | – | 58–115 × 30–113 |
| Right testis | 136–148 (150) × 113–154 (78) | 124–208 (164) × 120–180 (147) | – | – | – | |
| Ovary | 120–182 (143) × 110–168 (132) | 128–180 (151) × 112–188 (155) | 51* | – | – | 45–88 × 43–80 |
| Left vitelline mass | 201–256 (228) × 136–207 (176) | 201–256 (228) × 136–207 (176) | 85 – 102 × 68 | – | – | 53–105 × 43–80 |
| Right vitelline mass | 181–280 (216) × 133–185 (162) | 181–280 (216) × 133–185 (162) | – | – | – | |
| Eggs | 40–52 (48) × 28–34 (30) | 40–53 (50) × 28–35 (31) | 51–57 × 27–23 | 64 × 36 | 48–54 × 33 | 45–50 × 23–28 |
Abbreviations: NEA, Northeast Atlantic. NWA, Northwest Atlantic.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.