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The Collothecidae (Rotifera, Collothecacea) of Thailand, with the description of a new species and an illustrated key to the Southeast Asian fauna.

Meksuwan P, Pholpunthin P, Segers H - Zookeys (2013)

Bottom Line: A total of 13 species, including two additional infraspecific variants, of Collothecidae are recorded, one of which is described as a new species of Collotheca.We further add taxonomic remarks on some of the taxa on record and illustrate the uncinate trophi of several representatives by scanning electron microscopic images.Finally, we provide illustrated identification keys to the Collothecidae recorded to date from Southeast Asia.

View Article: PubMed Central - PubMed

Affiliation: Plankton Research Unit, Department of Biology, Faculty of Science, Prince of Songkla University, Hat Yai 90112, Songkhla, Thailand.

ABSTRACT
Following previous reports indicating a remarkable high diversity of sessile rotifers in Southeast Asian freshwaters, we report on an extensive study of the diversity of Collothecidae rotifers from fifteen freshwater habitats in Thailand. A total of 13 species, including two additional infraspecific variants, of Collothecidae are recorded, one of which is described as a new species of Collotheca. We further add taxonomic remarks on some of the taxa on record and illustrate the uncinate trophi of several representatives by scanning electron microscopic images. Finally, we provide illustrated identification keys to the Collothecidae recorded to date from Southeast Asia.

No MeSH data available.


Related in: MedlinePlus

ACollotheca heptabrachiata, lateral BCollotheca ornata, ventral CStephanoceros fimbriatus, lateral DCollotheca stephanochaeta, lateral ECollotheca ambigua, ventral FCollotheca algicola, ventral G, HCollotheca ornata f. cornuta (G dorsal H lateral) ICollotheca campanulata f. longicaudata, attachment stalk JCollotheca ferox, ventral corona margin. Scale bars: A, B, D–H, J = 50 µm, C, I = 100 µm.
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Figure 4: ACollotheca heptabrachiata, lateral BCollotheca ornata, ventral CStephanoceros fimbriatus, lateral DCollotheca stephanochaeta, lateral ECollotheca ambigua, ventral FCollotheca algicola, ventral G, HCollotheca ornata f. cornuta (G dorsal H lateral) ICollotheca campanulata f. longicaudata, attachment stalk JCollotheca ferox, ventral corona margin. Scale bars: A, B, D–H, J = 50 µm, C, I = 100 µm.

Mentions: The morphological characters of our specimens agree closely with the description of the species by Penard (1914): the corona of the specimens is more than twice as broad as its trunk and bears five broad lobes (Fig. 2A, B, 4J). The dorsal lobe tip is relatively large and rounded anteriorly; the lateral lobes are intermediate in size whereas the triangular ventral lobes are relatively small and are set close together. The features of the ventral lobe are unique to this species and prevent confusion with other five-lobed species of the genus. Our photographs of living specimens and trophi of Collotheca ferox confirm, in particular, the unique features of the ventral corona lobes illustrated by Penard (1914).


The Collothecidae (Rotifera, Collothecacea) of Thailand, with the description of a new species and an illustrated key to the Southeast Asian fauna.

Meksuwan P, Pholpunthin P, Segers H - Zookeys (2013)

ACollotheca heptabrachiata, lateral BCollotheca ornata, ventral CStephanoceros fimbriatus, lateral DCollotheca stephanochaeta, lateral ECollotheca ambigua, ventral FCollotheca algicola, ventral G, HCollotheca ornata f. cornuta (G dorsal H lateral) ICollotheca campanulata f. longicaudata, attachment stalk JCollotheca ferox, ventral corona margin. Scale bars: A, B, D–H, J = 50 µm, C, I = 100 µm.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3713350&req=5

Figure 4: ACollotheca heptabrachiata, lateral BCollotheca ornata, ventral CStephanoceros fimbriatus, lateral DCollotheca stephanochaeta, lateral ECollotheca ambigua, ventral FCollotheca algicola, ventral G, HCollotheca ornata f. cornuta (G dorsal H lateral) ICollotheca campanulata f. longicaudata, attachment stalk JCollotheca ferox, ventral corona margin. Scale bars: A, B, D–H, J = 50 µm, C, I = 100 µm.
Mentions: The morphological characters of our specimens agree closely with the description of the species by Penard (1914): the corona of the specimens is more than twice as broad as its trunk and bears five broad lobes (Fig. 2A, B, 4J). The dorsal lobe tip is relatively large and rounded anteriorly; the lateral lobes are intermediate in size whereas the triangular ventral lobes are relatively small and are set close together. The features of the ventral lobe are unique to this species and prevent confusion with other five-lobed species of the genus. Our photographs of living specimens and trophi of Collotheca ferox confirm, in particular, the unique features of the ventral corona lobes illustrated by Penard (1914).

Bottom Line: A total of 13 species, including two additional infraspecific variants, of Collothecidae are recorded, one of which is described as a new species of Collotheca.We further add taxonomic remarks on some of the taxa on record and illustrate the uncinate trophi of several representatives by scanning electron microscopic images.Finally, we provide illustrated identification keys to the Collothecidae recorded to date from Southeast Asia.

View Article: PubMed Central - PubMed

Affiliation: Plankton Research Unit, Department of Biology, Faculty of Science, Prince of Songkla University, Hat Yai 90112, Songkhla, Thailand.

ABSTRACT
Following previous reports indicating a remarkable high diversity of sessile rotifers in Southeast Asian freshwaters, we report on an extensive study of the diversity of Collothecidae rotifers from fifteen freshwater habitats in Thailand. A total of 13 species, including two additional infraspecific variants, of Collothecidae are recorded, one of which is described as a new species of Collotheca. We further add taxonomic remarks on some of the taxa on record and illustrate the uncinate trophi of several representatives by scanning electron microscopic images. Finally, we provide illustrated identification keys to the Collothecidae recorded to date from Southeast Asia.

No MeSH data available.


Related in: MedlinePlus