Pseudocyclops schminkei (Copepoda, Calanoida, Pseudocyclopidae): a new species from Okinawa

Chullasorn, Supawadee; Ferrari, Frank D.; Dahms‬, Hans-Uwe

doi:10.1007/s10152-009-0164-9

Cited by 6 publications

(4 citation statements)

References 22 publications

(29 reference statements)

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“…Although the results might be caused by a mesh selection, a second probable hypothesis is that Pseudocyclops lerneri is a weak swimmer, remaining close to the substrate during the night. It has been suggested that the general morphology of Pseudocyclops with plump body and short first antennae may limit their ability to remain in the water column (Chullasorn et al ., 2010). This would also explain the contrast in abundance in this study to previous Pseudocyclops studies which used subsurface net tows.…”

Section: Resultsmentioning

confidence: 99%

“…The genus Pseudocyclops Brady, 1872 resembles a Cyclopoida copepod, characterized by its small plump body rarely exceeding 1 mm in length, short first antennules and the presence of strong spines on the outer margin of the exopodes of the swimming legs. This general body morphology is usually common in benthopelagic calanoids, which spend a good part of the diel cycle on or near the substrate (Chullasorn et al ., 2010). Pseudocyclops was first described as one of the few Calanoida that displayed bottom-living behaviour (Fosshagen, 1968).…”

Section: Introductionmentioning

confidence: 99%

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The first record of the calanoid family Pseudocyclopidae Giesbrecht, 1893 in the South Atlantic Ocean

Farias,

Figueirêdo

et al. 2024

J. Mar. Biol. Ass.

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Nine hundred and ninety-two (992) specimens of Pseudocyclops lerneri Fosshagen, 1968 (Copepoda: Pseudocyclopidae) were collected from the largest South Atlantic coral reef, Abrolhos bank (17°20′–18°10′S; 38°35′–39°20′W). Specimens were distinguished from other Pseudocyclops spp. by a close examination of the female and male fifth leg. This is the first record of the family Pseudocyclopidae in the South Atlantic. We further indicate that the low number of studies on this species, and as a consequence, the poorly understood ecology of Pseudocyclopidae may be caused by the use of inadequate sampling methods, indicating the use of demersal-focused samplers, such as emergence traps as an alternative to the sampling of these bottom-dwelling copepods.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The first record of the calanoid family Pseudocyclopidae Giesbrecht, 1893 in the South Atlantic Ocean

Farias,

Figueirêdo

et al. 2024

J. Mar. Biol. Ass.

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“…Six naupliar stages were recovered from this Pseudocyclops population as described by (Chullasorn et al 2010) that inhabits aquaria at the John G. Shedd Aquarium (Chicago, IL, USA). Six naupliar stages are also known for Pseudocyclops umbraticus (Costanzo et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Naupliar development of Pseudocyclops sp. (Copepoda: Calanoida: Pseudocyclopidae): description of an unusual set of character states

Ferrari¹,

Dahms‬

Kangtia

et al. 2013

Zool. Stud.

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Background: Naupliar development is known for only one other species of the calanoid taxon Pseudocyclopidae as yet. Results: Six naupliar stages are described from an as yet unnamed population of Pseudocyclops cultured at the John G. Shedd Aquarium in Chicago, IL. The naupliar body is divided into a deep anterior section and a shallow posterior section, although the posterior section is poorly defined at NI. The posterior section bears a long, thin mediodorsal seta; short thick setae are added during molts to NIII~NV. The posterior section does not bear limb buds except for the caudal ramus and is presumed to represent the anal segment of the copepod. Throughout naupliar development, the antennule is five-segmented, a uniquely high number for a calanoid copepod. The distal segment is broadened, and three proximal segments are foreshortened during the molt to NIII, and remain so thereafter. Setae are added dorsally and ventrally to the distal segment during each molt. The naupliar arthrite is a simple, seta-like structure on the coxa of the antenna of all naupliar stages. On the exopod of the antenna, setae are added to the segment adjacent to the proximal one during molts to NIV~NVI in a manner consistent with the model of ramal patterning. The gnathobase is added to the coxa of the mandible during the molt to NIV, but its ventral attenuations are lost during the molt to NVI. The endopod of the mandible significantly changes between stages NIII and NIV; setae originate dorsally rather than ventrally on the proximal endopodal segment. These unique changes are reversed during the molt to NVI. Conclusions: Many of these changes have not been reported for any other calanoid. The morphological restoration at NVI is particularly noteworthy.

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“…Specimens of the new species were selected for analysis as well as the pseudocyclopid taxa ( Pseudocyclops juanibali Figueroa, and Pseudocyclops schminkei Chullasorn, Ferrari & Dahms, ). These taxa were used to add to the description of the new taxon and, along with additional species from GenBank, to improve the resolution of the current gene‐based phylogeny (Blanco‐Bercial, Bradford‐Grieve & Bucklin, ) (http://onlinelibrary.wiley.com/doi/10.1111/zoj.12141/suppinfo).…”

Section: Methodsmentioning

confidence: 99%

Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae

2014

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A newly discovered plesiomorphic genus and species of calanoid copepod (Pinkertonius ambiguus gen. et sp. nov.) taken with an epibenthic sledge from the flanks of the Chatham Rise, east of New Zealand, at a depth of about 900 m, could not be assigned to any known genus or family based on available diagnoses. A morphology‐based cladistic analysis of all genera previously placed in the Epacteriscidae, Pseudocyclopidae, Ridgewayiidae, Boholinidae, and the new taxon is presented. The Pseudocyclopidae and Epacteriscidae are confirmed as monophyletic families, and the family names Ridgewayiidae and Boholinidae become synonyms of Pseudocyclopidae. There are no grounds upon which more than a single basal superfamily, the Pseudocyclopoidea, can be recognized. The superfamily Pseudocyclopoidea, and families Pseudocyclopidae, Epacteriscidae, and the new genus are diagnosed. Pinkertonius ambiguus gen. et sp. nov. is placed within the Pseudocyclopidae. Genetic data adds to the definition of the new taxon and confirms the basal position of the Pseudocyclopoidea in a revised Calanoida phylogeny. This phylogeny contributes to an improved resolution of the relationships among the Centropagoidea, Megacalanoidea, Bathypontioidea, Eucalanoidea, and Clausocalanoidea, as well as providing testable hypotheses for future work. © 2014 The Linnean Society of London

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Pseudocyclops schminkei (Copepoda, Calanoida, Pseudocyclopidae): a new species from Okinawa

Cited by 6 publications

References 22 publications

The first record of the calanoid family Pseudocyclopidae Giesbrecht, 1893 in the South Atlantic Ocean

The first record of the calanoid family Pseudocyclopidae Giesbrecht, 1893 in the South Atlantic Ocean

Naupliar development of Pseudocyclops sp. (Copepoda: Calanoida: Pseudocyclopidae): description of an unusual set of character states

Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae

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