Description of Neodiaptomus Siamensis, a New Diaptomid Copepod (Copepoda, Calanoida) from Temporary Pools in Northern Thailand

Proongkiat, Khunapat; Sanoamuang, La‐orsri

doi:10.1163/156854008783476198

Cited by 6 publications

(1 citation statement)

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“…More than 440 diaptomid species are reported worldwide, and 92 and 94 species have been recorded from the Oriental and Western Palearctic regions, respectively [1,2]. The biodiversity of diaptomid copepods in the lower Mekong River Basin is rather well studied, particularly in Thailand [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], where at least 42 species have been recorded. A total of 33 species have been reported in Vietnam [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Distribution and Diversity of Diaptomid Copepods in Freshwater Habitats of Cambodia (Crustacea: Copepoda: Calanoida: Diaptomidae)

Chaicharoen

Sanoamuang

2022

Diversity

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Freshwater diaptomid copepods in Cambodia are poorly studied, and only seven taxa were known previously. From February to October 2007, 255 samples were collected from 237 freshwater sites in nine provinces representing four regions (northwest, Cardamom and Elephant Mountains, Mekong Lowlands, and east) of Cambodia. Diversity, seasonal occurrence, geographical distribution of each species, and a checklist of diaptomid copepods are documented. In this case, 24 species were recorded, including two undescribed species belonging to the genera Phyllodiaptomus and Tropodiaptomus. In this case, 14 species are recorded for the first time in Cambodia, and Mongolodiaptomus formosanus has been recorded for the first time in Southeast Asia. One species appears to be endemic to Cambodia and nine to the lower Mekong River Basin. Mongolodiaptomus malaindosinensis was the most common, frequently recorded throughout the four regions (40.5% of the sampled sites), followed by Vietodiaptomus blachei (39.2%), Eodiaptomus phuvongi (38.8%), Mongolodiaptomus formosanus (31.2%), and Eodiaptomus draconisignivomi (27.4%). Very rare species such as Eodiaptomus sanoamuangae, Tropodiaptomus vicinus, Mongolodiaptomus calcarus, and Tropodiaptomus sp. were only recorded at 0.4% to 0.8% of the sampled sites. The species diversity of Cambodia is most similar to that of Thailand, where 22 species (91.6%) occur both in Cambodia and Thailand, and 12 (50%) of the species have been recorded in both Cambodia and Vietnam.

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Section: Introductionmentioning

confidence: 99%

Distribution and Diversity of Diaptomid Copepods in Freshwater Habitats of Cambodia (Crustacea: Copepoda: Calanoida: Diaptomidae)

Chaicharoen

Sanoamuang

2022

Diversity

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Neodiaptomus prateek n. sp., a new freshwater copepod from Assam, India, with critical review of generic assignment of Neodiaptomus spp. and a note on diaptomid species richness (Calanoida: Diaptomidae)

Reddy

2013

Journal of Crustacean Biology

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A B S T R A C TNeodiaptomus prateek n. sp. is described based on a plankton sample collected from Deepor Beel, a floodplain lake in the north-eastern, Indian state of Assam, which falls within the key biodiversity area of the Indo-Burma Hotspot. The new species fulfils all the principal criteria of the genus Neodiaptomus Kiefer, 1932, as revised by Kiefer (1939). It has, however, a spectacular autapomorphic feature, which is perhaps unparalleled in Diaptomidae as a whole -a massive coxal plate ending in a thumb-like spinulose structure on the caudal surface of the male left P5. The new taxon also has two homoplastic characters that are hitherto unknown within the genus: the female fourth pediger has a prominent mid-dorsal process, and the third endopodal segment of P2-P4 has six instead of seven setae, the proximal outer seta being absent. The affinities of the new species with its congeners are discussed. Furthermore, the generic assignment of all the 13 species of Neodiaptomus listed in the latest World Copepoda database (Walter, 2012) is critically reviewed. Of these, five species are recognised as valid, six are relegated to species inquirendae, and one each is a nomen dubium and a synonym. Two lineage groups are recognised within the genus, one belonging to Southeast Asia and the other mostly confined to India. Surprisingly, the new species was accompanied by a record number of seven other diaptomid species in the same sample; the probable biogeographic and ecological implications of this high species richness are briefly discussed.

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Diversity of Zooplankton in the Rice Fields in Suphan Buri Province, Thailand, with a New Record of Cyclopoid Copepod

Maiphae,

Saetang,

Jantawong

et al. 2023

Diversity

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Rice fields are dynamic ecosystems with complex niche structures for organisms, and they have been hypothesised to have high biodiversity. Accordingly, in this study, the diversity of zooplankton in rice fields in Suphan Buri Province, a large area of rice plantations in the central region of Thailand, was examined. A total of 100 species, including 52 rotifers, 18 cladocerans, and 30 copepods, were recorded, including Mesocyclops kayi, which was a new record in Thailand. A high Simpson’s diversity index (0.63) and a low Pielou’s species evenness index (0.02) confirmed various potential niches for zooplankton in this ecosystem, leading to a low Jaccard similarity index both among the current rice fields and those in other regions. Moreover, the species richness estimators suggested that more species are expected to be discovered in the rice fields. Rotifer and copepod communities are influenced by local environmental variables, including dissolved oxygen, salinity, conductivity, and chlorophyll a. The results of this study fill a gap in the knowledge regarding the diversity and ecology of zooplankton in rice fields. However, further research is needed to fully comprehend the function of this ecosystem and the actual diversity in Thailand.

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Description of Neodiaptomus Siamensis, a New Diaptomid Copepod (Copepoda, Calanoida) from Temporary Pools in Northern Thailand

Cited by 6 publications

References 5 publications

Distribution and Diversity of Diaptomid Copepods in Freshwater Habitats of Cambodia (Crustacea: Copepoda: Calanoida: Diaptomidae)

Distribution and Diversity of Diaptomid Copepods in Freshwater Habitats of Cambodia (Crustacea: Copepoda: Calanoida: Diaptomidae)

Neodiaptomus prateek n. sp., a new freshwater copepod from Assam, India, with critical review of generic assignment of Neodiaptomus spp. and a note on diaptomid species richness (Calanoida: Diaptomidae)

Diversity of Zooplankton in the Rice Fields in Suphan Buri Province, Thailand, with a New Record of Cyclopoid Copepod

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