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Two new record species of free-living marine nematodes from Bohai Sea, China
Zhao, L.-P.; Qiao, C.-Y.; Lu, Y.; Sun, J. (2020). Two new record species of free-living marine nematodes from Bohai Sea, China. Oceanol. Limnol. Sin. = Haiyang Yu Huzhao 51(1): 212-217. https://dx.doi.org/10.11693/hyhz20190900173
In: Oceanologia et Limnologia Sinica = Haiyang Yu Huzhao. Kēxué chūbǎnshè: Beijing. ISSN 0029-814X
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| Auteurs | | Top |
- Zhao, L.-P.
- Qiao, C.-Y.
- Lu, Y.
- Sun, J.
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| Abstract |
Two new records of free-living marine nematode species discovered from marine sediments in Bohai Sea, North China were described. Bathylaimus australis Cobb, 1894 is characterized by smooth cuticle with short somatic setae. Cephalic setae thick and strong, comprised of four segments. Buccal cavity large, bipartite without tooth. Amphideal fovea circular, 20µm from anterior end, positioned over posterior half of the anterior portion of buccal cavity. Spicules 32—37µm long, gubernaculum 36—40µm long. Female with two opposed, reflexed ovaries. Vulva situated at mid-body. Nudora gourbaultae Vincx, 1989 is characterized by cuticle coarsely annulated. The first and second annuli are broader and form a kind of a cephalic capsule. Twelve longitudinal rows of V-markings (costae) are present. The six internal labial papillae, the six outer labial sensilla setiform (2µm long) are situated in the middle part of the lips. The four cephalic setae 11—15µm long and situated at the basis of the lip region. Somatic setae are scarce. The amphideal fovea circular situated on the second annulus. The buccal cavity cylindrical and heavily sclerotized with a big dorsal tooth. Pharynx with a prominent anterior bulb and an elongated terminal bulb that is divided into two parts. Male diorchic with both testes. Spicules slender with a typical proximal bent. Gubernaculum falciform, well-developed and longer than the spicules. Female monodelphic, vulva close to anus. |
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