Table 1. Holoplanktonic mollusks (Pteropoda and Pterotracheoidea) and their density values (ind 100 m−3) in the Campeche Canyon (southern Gulf of Mexico) in a “Nortes” season (February 2011), at each sampling depth.
Bold values represent the three dominant species.
| Order Pteropoda | Density (ind 100 m−3) | ||||
|---|---|---|---|---|---|
| 10 m | 50 m | 100 m | 200 m | Total | |
| Cavolinia uncinata (A. d’Orbigny, 1835) | 7.0 | 20.5 | 12.2 | 5.2 | 44.8 |
| Cavolinia inflexa (Lesueur, 1813) | 246.2 | 162.6 | 89.0 | 50.6 | 548.5 |
| Diacavolinia limbata (A. d’Orbigny, 1835) | 8.4 | 0.9 | 0.0 | 0.0 | 9.3 |
| Diacavolinia stangulata (Deshayes, 1823) | 12.0 | 4.1 | 1.4 | 0.0 | 17.5 |
| Diacavolinia constricta van der Spoel, Bleeker & Kobayasi, 1993 | 8.5 | 0.0 | 0.4 | 0.4 | 9.4 |
| Diacavolinia longirostris (Blainville, 1821) | 1.2 | 0.6 | 0.0 | 0.0 | 1.8 |
| Diacria major (Boas, 1886) | 0.0 | 0.3 | 1.2 | 0.0 | 1.5 |
| Telodiacria danae (van Leyen & van der Spoel, 1982) | 98.0 | 58.1 | 18.2 | 8.3 | 182.6 |
| Clio pyramidata Linnaeus, 1767 | 0.0 | 0.0 | 1.8 | 0.0 | 1.8 |
| Clio cuspidata (Bosc, 1801) | 0.0 | 0.0 | 0.3 | 0.0 | 0.3 |
| Creseis acicula (Rang, 1828) | 237.7 | 109.6 | 13.1 | 69.7 | 430.1 |
| Creseis conica Eschscholtz, 1829 | 830.2 | 403.1 | 214.1 | 94.3 | 1541.7 |
| Creseis virgula (Rang, 1828) | 2.7 | 1.8 | 0.0 | 0.0 | 4.5 |
| Boasia chierchia e (Boas, 1886) | 0.7 | 0.0 | 0.0 | 0.0 | 0.7 |
| Styliola subula (Quoy & Gaimard, 1827) | 22.5 | 15.0 | 7.4 | 0.9 | 45.9 |
| Hyalocylis striata (Rang, 1828) | 74.2 | 58.0 | 104.1 | 34.6 | 270.9 |
| Heliconoides inflatus (A. d’Orbigny, 1835) | 683.5 | 991.3 | 367.3 | 186.5 | 2228.5 |
| Limacina bulimoides (A. d’Orbigny, 1835) | 4.1 | 8.0 | 7.6 | 0.9 | 20.6 |
| Limacina lesueurii (A. d’Orbigny, 1836) | 50.6 | 159.3 | 27.1 | 3.9 | 240.9 |
| Limacina trochiformis (A. d’Orbigny, 1835) | 679.0 | 383.1 | 247.0 | 107.7 | 1416.7 |
| Peracle diversa (Monterosato, 1875) | 0.0 | 0.0 | 0.7 | 0.3 | 1.0 |
| Peracle reticulata (A. d’Orbigny, 1835) | 4.4 | 9.9 | 15.1 | 2.1 | 31.5 |
| Peracle bispinosa Pelseneer, 1888 | 0.0 | 0.0 | 0.0 | 1.9 | 1.9 |
| Desmopterus papilio Chun, 1889 | 17.8 | 36.4 | 122.0 | 46.9 | 223.2 |
| Cymbulia peronii Blainville, 1818 | 0.0 | 0.0 | 0.3 | 0.0 | 0.3 |
| Clione limacina (Phipps, 1774) | 0.0 | 0.1 | 0.0 | 0.0 | 0.1 |
| Paraclione longicaudata (Souleyet, 1852) | 8.4 | 0.9 | 2.0 | 0.0 | 11.4 |
| Thliptodon diaphanus (Meisenheimer, 1902) | 0.0 | 4.1 | 9.0 | 2.1 | 15.2 |
| Cliopsis krohnii Troschel, 1854 | 0.0 | 1.4 | 0.3 | 0.3 | 2.0 |
| Pneumoderma violaceum A. d’Orbigny, 1835 | 7.2 | 7.7 | 6.3 | 7.8 | 29.0 |
| Pneumodermopsis macrochira Meisenheimer, 1905 | 0.0 | 0.0 | 0.0 | 0.6 | 0.6 |
| Schizobrachium polycotylum Meisenheimer, 1903 | 0.7 | 0.3 | 0.2 | 0.0 | 1.2 |
| Spongiobranchaea intermedia Pruvot-Fol, 1926 | 2.2 | 2.5 | 0.0 | 0.0 | 4.7 |
| Superfamily Pterotracheoidea (Carinaiidae, Pterotracheidae) | |||||
| Carinaria pseudorugosa Vayssière, 1904 | 2.9 | 0.0 | 3.5 | 0.0 | 6.4 |
| Firoloida desmarestia Lesueur, 1817 | 18.2 | 80.6 | 42.8 | 11.4 | 153.1 |
| Pterotrachea hippocampus R. A. Philippi, 1836 | 0.0 | 0.0 | 0.2 | 0.0 | 0.2 |