Diversity patterns of free-living marine nematodes in the southwest continental shelf off Bay of Bengal and their link to abiotic variables

Free-living marine nematodes of continental shelf of Portugal were studied through the goals of the Marine Biodiversity Information System Project (M@rbis 2015). Four species unknown to science and belonging to the families Axonolaimidae, Chromadoridae, Desmodoridae and Xyalidae are described. Besides Hypodontolaimus golikovy, Hypodontolaimus portuguese sp. n. is the only species in this genus which lacks precloacal supplements and gubernaculum but differs from the former mainly in cephalic setae length and amphidial fovea features. Metachromadora aliusa sp. n. doesn’t have a unique diagnostic character, differing in many aspects from the other species of the genus instead, mainly teeth number in the buccal cavity, size of the cephalic setae and the amphidial fovea, velum presence in the spicules, number and shape of the precloacal supplements. The main character of Odontophora sinapophysis sp. n. is the absence of apophysis in the gubernaculum. Stylotheristus multipapillatus sp. n. is characterized by the presence of precloacal supplements (papilliform) and the gubernaculum formed by only a piece.

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Re-evaluation of species diversity patterns of free-living marine nematodes

Marine Ecology Progress Series ◽

10.3354/meps238101 ◽

2002 ◽

Vol 238 ◽

pp. 101-108 ◽

Cited By ~ 40

Author(s):

V Mokievsky ◽

A Azovsky

Keyword(s):

Species Diversity ◽

Marine Nematodes ◽

Free Living ◽

Diversity Patterns

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Four new species of free-living marine nematodes of the family Desmodoridae (Nematoda: Desmodorida) and a redescription of Desmodora nini (Inglis, 1963) from the continental shelf off northeastern Brazil

Zootaxa ◽

10.11646/zootaxa.4021.1.3 ◽

2015 ◽

Vol 4021 (1) ◽

pp. 63

Author(s):

ALEXANDRE L. LARRAZÁBAL-FILHO ◽

MARIA CRISTINA DA SILVA ◽

ANDRÉ M. ESTEVES

Keyword(s):

New Species ◽

Continental Shelf ◽

Northeastern Brazil ◽

Marine Nematodes ◽

Free Living ◽

The Family

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Meiobenthic diversity off Pudimadaka, Bay of Bengal with special reference to free-living marine nematodes

Journal of the Marine Biological Association of India ◽

10.6024/jmbai.2017.59.1.1947-01 ◽

2017 ◽

Vol 59 (1) ◽

pp. 05-13

Author(s):

C. Annapurna ◽

◽

M. Srinivasa Rao ◽

CH. Vijaya Bhanu ◽

A. Ambedkar ◽

...

Keyword(s):

Special Reference ◽

Bay Of Bengal ◽

Marine Nematodes ◽

Free Living

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Diversity patterns of free-living nematode assemblages in seagrass beds from the Cuban archipelago (Caribbean Sea)

Biodiversity Data Journal ◽

10.3897/bdj.8.e58848 ◽

2020 ◽

Vol 8 ◽

Author(s):

Maickel Armenteros ◽

Patricia Rodríguez-García ◽

José Andrés Pérez-García ◽

Adolfo Gracia

Keyword(s):

Species Richness ◽

Nematode Species ◽

Seagrass Beds ◽

Marine Nematodes ◽

Free Living ◽

Diversity Patterns ◽

Local Species Richness ◽

Free Living Nematode ◽

Limited Dispersal ◽

Local Species

Diversity patterns of free-living marine nematodes in tropical seagrass beds are understudied. Here, we describe the species richness and assemblage composition of nematodes in 13 seagrass sites covering the whole Cuban archipelago. Nematodes were collected from Thalassia testudinum seagrass beds and identified to species level. We provide a checklist of nematode species from seagrass beds. The species richness of nematode assemblages is high, with 215 species, 138 genus, 35 families, seven orders and two classes. That γ-diversity is higher than other studies and points to seagrass beds as diversity hotspots of free-living marine nematodes. Local species richness in seagrass bed sites is about 57 ± 17 species and broadly similar across the sites, despite the environmental heterogeneity. The geographical distance plays a weak, but significant, role on the decay of similarity likely affected by limited dispersal of nematodes. The pairwise similarity values, related to poor-coloniser nematodes, were twice more affected by the distance than those related to good-colonisers, possibly due to differential success of transport and settlement.

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