An interim synopsis of the Bradfordian families with a description of Thoxancalanus spinatus (Copepoda: Calanoida), a new diaixid genus and species from the deep Atlantic Ocean

Markhaseva, Elena L.; Laakmann, Silke; Renz, Jasmin

doi:10.1007/s12526-013-0185-0

Cited by 16 publications

(11 citation statements)

References 25 publications

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“…The numbering of the ancestral segments of the antennule fol-lows Huys & Boxshall [1991]. The terminology for oral parts follows Markhaseva & Ferrari [2006] and Ferrari & Ivanenko [2008] and is as compiled in Markhaseva et al [2014].…”

Section: Methodsmentioning

confidence: 99%

New records of the rare benthopelagic genera Comantenna Wilson, 1924 and Crassantenna Cole, Green, Howcroft et Rawlins, 1972 (Copepoda: Calanoida: Aetideidae) from the North Pacific abyss

Markhaseva

Bradford‐Grieve

Renz

2017

Arthsel

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Rare benthopelagic aetideid copepods Crassantenna comosa Bradford, 1969 and Comantenna crassa Bradford, 1969, previously known only from their holotypes off New Zealand, South Pacific, are found for the first time in the abyss in the vicinity of the Kurile Kamchatka Trench, North Pacific. Minor morphological differences were observed between the North and South Pacific specimens of both species. Evidence of intraspecific variability was observed among the 31 specimens of C. crassa: spermathecae were bent at various obtuse angles, there was variability in the degree of fusion of antennule ancestral segments IV-VII; the maxilliped coxal sensory appendage had a range of lengths, and the P5 was present or absent. The genus Crassantenna, as Cr. comosa, is recorded for the first time in the northern part of the Pacific Ocean and minor differences from the holotype are assumed to represent intraspecific variation until more specimens are examined for evidence of variability. РЕЗЮМЕ. Редкие виды веслоногих рачков аетидеид Crassantenna comosa Bradford, 1969 и Comantenna crassa Bradford, 1969, ранее известные только по голотипам из южной Пацифики из района Новой Зеландии, впервые найдены в северной Пацифике в непосредственной близости от дна в абиссали Курило-Камчатского желоба. У обоих видов отмечены небольшие морфологические различия между экземплярами из южной и северной Пацифики. Внутривидовая изменчивость наблюдается и среди курило-камчатских представителей C. crassa (31 экземпляр) и заключается в следующем: сперматеки изогнуты под разными углами; в различной степени слиты анцестральные сегменты антеннул IV-VII; сенсорный придаток на коксе максиллипеды варьирует по длине, а P5 присутствует или отсутствует. Род Crassantenna впервые найден в северной части Тихого океана и представлен видом Cr. comosa, который слегка отличен по строению от голотипа, однако, пока не появятся дополнительные материалы, эти отличия сочтены проявлением внутривидовой изменчивости.

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Section: Methodsmentioning

confidence: 99%

New records of the rare benthopelagic genera Comantenna Wilson, 1924 and Crassantenna Cole, Green, Howcroft et Rawlins, 1972 (Copepoda: Calanoida: Aetideidae) from the North Pacific abyss

Markhaseva

Bradford‐Grieve

Renz

2017

Arthsel

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“…The terminology for oral parts follows Markhaseva and Ferrari (2006) and Ferrari and Ivanenko (2008) and is as compiled in Markhaseva et al (2014).…”

Section: Methodsmentioning

confidence: 99%

Description of Pseudeuchaeta vulgaris n. sp. (Copepoda: Calanoida), a new aetideid species from the deep Pacific Ocean with notes on the biogeography of benthopelagic aetideid calanoids

2016

Self Cite

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A new aetideid species Pseudeuchaeta vulgaris sp. nov. is described from females collected at abyssal depths above the seabed from the Clarion Clipperton Fracture Zone in the equatorial northeastern Pacific. It belongs to the benthopelagic group of Pseudeuchaeta Sars, 1905 species. The new species is distinguished from all congeners by two setae present on the maxillule proximal basal endite. It is closely related to P. magna Bradford, 1969 and P. major (Wolfenden, 1911), as all three species share a mandible endopod segment 2 with 4-5 setae and the P1 exopod segment 1 lacking a lateral spine. The new species is the fourth benthopelagic representative of the genus found in the abyssal near-bottom environment of the Pacific Ocean and the first benthopelagic Pseudeuchaeta species recorded in the tropical Pacific. An illustrated overview on the distribution of the genus Pseudeuchaeta is given together with notes on the biogeography of benthopelagic aetideid calanoids in the world's ocean. While some genera show a nearly worldwide distribution, only few species have been reported in more than one ocean so far. This reflects the undersampling of the benthopelagial in the deep ocean.

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“…indicates that a setal element was broken so that its identity on the antennule could not be determined and only the scar at its former position was counted. Segments of antennule and oral parts are labeled as compiled in Markhaseva et al [2014] after Huys & Bosxhall [1991] for antennule and Ferrari & Ivanenko [2008] for maxilla and syncoxa of the maxilliped.…”

Section: Methodsmentioning

confidence: 99%

“…Recently a single kyphocalanid male has been recently found of the equatorial Atlantic (00°42.7′S 05°31.2′W). Here this male is de-scribed for the first time and illustrated in detail; and the family diagnosis has been emended to include male characters [Markhaseva et al, 2014].…”

Section: Introductionmentioning

confidence: 99%

Kyphocalanus (Copepoda: Calanoida) from deep Atlantic waters, first description of male

Markhaseva

2014

Arthropoda Selecta

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A male of a rare monotypic family Kyphocalanidae is described in detail from specimen collected at abyssal depths above the sea bed in the Atlantic Ocean. Kyphocalanus male shares with female congeners the following apomorphies: maxillule praecoxal arthrite with 3 setae; maxilla endopod with 8 thick worm-like sensory setae distinctly longer than sclerotized setae of maxilla endites, and the praecoxal endites of maxilliped with a 1, 2, 0 setal formula; all are worm-like sensory elements. Proximal part of males right antennule with ancestral segments X-XI fused, P5 biramous, of simple structure; right and left protopods of nearly same length; exopods 3-segmented. РЕЗЮМЕ. Самец рода редкого монотипического семейства Kyphocalanidae детально описан по экземпляру из придонных абиссальных вод Атлантического океана. Самец Kyphocalanus характеризуется следующими апоморфиями, свойственными самке того же рода: прекосальный артрит максиллулы с 3 щетинками; эндоподит максиллы с 8 толстыми червеобразными сенсорными щетинками, которые заметно длиннее склеротизированных щетинок остальных эндитов максиллы и формула вооружения прекоксальных эндитов максиллипеды-1, 2, 0, причем все щетинки червеобразные. В проксимальной части антеннулы самца только анцестральные сегменты X-XI слиты, P5 двуветвистые, простого строения; правый и левый протоподиты примерно одной длины; экзоподиты 3-segmented.

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An interim synopsis of the Bradfordian families with a description of Thoxancalanus spinatus (Copepoda: Calanoida), a new diaixid genus and species from the deep Atlantic Ocean

Cited by 16 publications

References 25 publications

New records of the rare benthopelagic genera Comantenna Wilson, 1924 and Crassantenna Cole, Green, Howcroft et Rawlins, 1972 (Copepoda: Calanoida: Aetideidae) from the North Pacific abyss

New records of the rare benthopelagic genera Comantenna Wilson, 1924 and Crassantenna Cole, Green, Howcroft et Rawlins, 1972 (Copepoda: Calanoida: Aetideidae) from the North Pacific abyss

Description of Pseudeuchaeta vulgaris n. sp. (Copepoda: Calanoida), a new aetideid species from the deep Pacific Ocean with notes on the biogeography of benthopelagic aetideid calanoids

Kyphocalanus (Copepoda: Calanoida) from deep Atlantic waters, first description of male

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