K and N reactor capabilities

Lang, L.W.; Dowis, W.J.

doi:10.2172/10146304

Cited by 15 publications

(24 citation statements)

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“…He also presented a key to species of the genus in which he recognized 11 members as valid ( Nitocra pusilla Sars, 1911, Nitocra inuber (Schmankevitch, 1875), Nitocra affinis , Nitocra typica , Nitocra dubia Sars, 1927, Nitocra lacustris , Nitocra fragilis Sars, 1905, Nitocra wolterecki Brehm, 1909, Nitocra spinipes , Nitocra sewelli and Nitocra platypus Daday, 1906. Lang (1948) recognized 16 valid species and 7 subspecies, and relegated Nitocra inuber (= Dactylopus inuber Schmankevitsch, 1875), Nitocra gracilimana Giesbrecht, 1902, Nitocra wolterecki , Nitocra phlegraea Brehm 1909, and Nitocra chelifer Wilson, 1932, as incertae sedis within the genus. Kunz (1976) described a new subspecies of Nitocra sewelli , Nitocra sewelli husmanni Kunz, 1976 from Bremen (Germany).…”

Section: Discussionmentioning

confidence: 99%

“…Of these, eight species ( Nitocra affinis , Nitocra divaricata Chappuis, 1923, Nitocra fallaciosa Klie, 1937, Nitocra hibernica (Brady, 1880), Nitocra lacustris , Nitocra mediterranea Brian, 1928, Nitocra minor Willey, 1930, Nitocra platypus ) contain 22 subspecies (Wells 2007). Also, the same species as in Lang (1948) (except for Nitocra phlegraea which does not appear in Wells’ (2007) list of species) plus Nitocra hyperidis Jakobi, 1956, are regarded as incertae sedis within the genus (Lang 1965, Wells 2007). …”

Section: Discussionmentioning

confidence: 99%

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A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

Gómez

Carrasco

Morales-Serna

2012

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A new species of the genus Nitocra Boeck, 1865, Nitocra taylori sp. n. is described from the St Lucia Estuary, Africa’s largest estuarine lake. It is also suggested that Nitocra sewelli husmanni Kunz, 1976 and Nitocra reducta fluviatilisGalhano, 1968 are granted full species rank as Nitocra husmanni stat. n. Kunz, 1976 and Nitocra fluviatilis stat. n. Galhano, 1968. Nitocra taylori sp. n. appears to be closely related to Nitocra husmanni. Unfortunately, the original description of the micro-characters of the species lacks the detail needed to make reliable comparisons between species of the genus Nitocra. The main differences observed are the number of spinules along the posterior margin of the anal operculum, length ratio of the exopod and endopod of the first swimming leg, shape of the outer spine on the male third endopodal segment of the third swimming leg, number of segments of the male antennule, relative length of the setae on the male baseoendopod of the fifth leg, shape of the male exopod of the fifth leg, relative length of the two setae of the male sixth leg, and shape of the female baseoendopod of the fifth leg. The current distribution of Nitocra taylori sp. n. is limited to the lake part of the estuary, an area which is most severely affected by the current freshwater deprivation crisis. During closed mouth conditions, these regions (South/North Lake and False Bay) are characterized by low water levels, high salinities and high turbidity levels. This suggests that Nitocra taylori sp. n. may favor these environmental conditions and the significant correlations found between the abundance of Nitocra taylori sp. n. and salinity and turbidity confirm this to a degree. Nitocra taylori sp. n. individuals are also able to withstand a wide range of fluctuations. They were recorded at turbidities ranging from 2 to 102 NTU, temperatures from 20.9 to 34.8 ºC and salinity levels ranging from 9.81 to 53.7 psu. However, in the current state of the system, salinity and temperature levels in the northern regions frequently exceed this value. Continued freshwater deprivation may, therefore, further limit the distribution range of this species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

Gómez

Carrasco

Morales-Serna

2012

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“…In the case of Mesocletodes , as well, the sampling localities known up to now suggest an extremely wide distribution of this genus: the North Atlantic (Scandinavian coast [Lang 1948; Pesta 1927; Por 1964a; Por 1965; Sars 1909; Sars 1921], Irish, English and Scottish coasts [T. Scott, 1900; T. Scott, 1906; Thompson 1893; Wells 1965], Porcupine Abyssal Plain [Gheerardyn 2007; Gheerardyn et al 2010], Spitzbergen coast [Lang 1936], Arctic Ocean [T. and A. Scott 1901; Smirnov 1946], Icelandic coast and Iceland Faroe Ridge [Schriever 1983; Schriever 1985], Greenlandic coast [Jespersen 1939], off North Carolina [Coull 1973] Nova Scotia Rise [Thistle and Eckman 1990], French Atlantic coast [Bodin 1968], Iberian Basin [Becker et al 1979], Great Meteor Bank [George and Schminke 2002]), the Mediterranean Sea (Guidi-Guilvard et al 2009; Por 1964b; Soyer 1964; Soyer 1975), the Red Sea (Por 1967), the Pacific Ocean (Peru Trench [Becker et al 1979], off Hawaii [Mahatma 2009], off the Californian coast [Thistle et al 2007], off the Japanese coast [Shimanaga et al 2004]), the Indian Ocean (Por 1986a), the South Atlantic Ocean (Southwest Atlantic [George 2005], the Southeast Atlantic [Menzel and George 2009]). However, the distribution of Mesocletodes at the species level has been addressed briefly (Menzel and George 2009), and is subject to ongoing studies.…”

Section: Discussionmentioning

confidence: 99%

First descriptions of copepodid stages, sexual dimorphism and intraspecific variability of Mesocletodes Sars, 1909 (Copepoda, Harpacticoida, Argestidae), including the description of a new species with broad abyssal distribution

Menzel¹

2011

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Mesocletodes Sars, 1909a encompasses 37 species to date. Initial evidence on intraspecific variability and sexual dimorphism has been verified for 77 specimens of Mesocletodes elmari sp. n. from various deep-sea regions, and ontogenetic development has been traced for the first time. Apomorphies are a strong spinule-like pinna on the mx seta that is fused to the basis, P2–P4 exp3 proximal outer seta lost, P1–P4 enp2 extremely elongated, furcal rami elongated, female body of prickly appearance, female P2–P4 enp2 proximal inner seta lost. Intraspecific variability involves spinulation, ornamentation and size of the body and setation and spinulation of pereiopods. Sexually dimorphic modifications of adult females include prickly appearance of the body, P1 enp exceeds exp in length, P1 coxa externally broadened, seta of basis arising from prominent protrusion, hyaline frills of body somites ornate. Sexual dimorphism in adult males is expressed in smaller body size, haplocer A1, 2 inner setae on P2–P4 enp2 and on P5 exp, P5 basendopodal lobe with 2 setae. Some modifications allow sexing of copepodid stages. The female A1 is fully developed in CV, the male A1 undergoes extensive modifications at the last molt. P1–P4 are fully developed in CV. Mesocletodes faroerensis and Mesocletodes thielei lack apomorphies of Mesocletodes and are excluded.

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“…Nicholls (1941) placed L. chathamensis , together with L. mohammed and L. bengalensis Sewell, 1934, in the mohammed -group of the genus Laophonte . This group of fresh and brackish water forms is effectively equivalent to the mohammed -group delimited by Lang (1948) within the genus Onychocamptus Daday, 1903. Lang (1944, 1948) resurrected the latter genus after it had previously been synonymised with Laophonte by Zykoff (1904).…”

Section: Systematicsmentioning

confidence: 99%

“…This group of fresh and brackish water forms is effectively equivalent to the mohammed -group delimited by Lang (1948) within the genus Onychocamptus Daday, 1903. Lang (1944, 1948) resurrected the latter genus after it had previously been synonymised with Laophonte by Zykoff (1904). Lang did not expound on the new placement of L. chathamensis but it is conceivable that the short antennule in the female, the presence of only three setae on the female P5 endopodal lobe and the shape of the P1 have influenced his generic assignment.…”

Section: Systematicsmentioning

confidence: 99%

Philippiphonte aspidosoma gen. et sp. n., a radically divergent member of the Laophontidae from shell gravel in the East Sea, South Korea, including a review of Folioquinpes Fiers & Rutledge, 1990 (Copepoda, Harpacticoida)

Huys

Lee²

2018

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The primarily marine subtidal family Laophontidae not only contains more valid genera than any other family in the Harpacticoida, it is also one of the most speciose ones in the order, currently accommodating 327 species and subspecies. Based on published records, 25 laophontid species in 12 genera have so far been reported from Korean waters. Here both sexes of a new genus and species of Laophontidae are described, collected from shell gravel off Dokdo Island in the East Sea. Philippiphonte aspidosoma gen. et sp. n. displays a radically divergent morphology, including an extreme dorsoventrally depressed body shape which is reminiscent of members of the family Porcellidiidae. The convergent evolution of dorsoventrally flattened body plans in the Harpacticoida is briefly discussed.The distribution and habitat preference of laophontid species recorded from the Korean peninsula are summarised. The authenticity of the Korean record of Folioquinpes mangalis Fiers & Rutledge, 1990 from washings of invertebrates and intertidal stones from Jeju Island is reassessed in the light of a discussion of the genus. Folioquinpes pseudomangalis sp. n. and F. indicus sp. n. are proposed as new species for Folioquinpes mangalis Fiers & Rutledge, 1990 sensu Kim (2013) and Laophonte chathamensis Sars, 1905 sensu Sewell (1924), respectively. A key to species of Folioquinpes Fiers & Rutledge, 1990 is provided.

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K and N reactor capabilities

Cited by 15 publications

References 0 publications

A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

First descriptions of copepodid stages, sexual dimorphism and intraspecific variability of Mesocletodes Sars, 1909 (Copepoda, Harpacticoida, Argestidae), including the description of a new species with broad abyssal distribution

Philippiphonte aspidosoma gen. et sp. n., a radically divergent member of the Laophontidae from shell gravel in the East Sea, South Korea, including a review of Folioquinpes Fiers & Rutledge, 1990 (Copepoda, Harpacticoida)

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K and N reactor capabilities

Cited by 15 publications

References 0 publications

A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

A new species of Nitocra Boeck 1865 (Harpacticoida, Ameiridae, Ameirinae) from South Africa, with notes on its ecology and remarks on the status of Nitocra sewelli husmanni Kunz 1976

First descriptions of copepodid stages, sexual dimorphism and intraspecific variability of Mesocletodes Sars, 1909 (Copepoda, Harpacticoida, Argestidae), including the description of a new species with broad abyssal distribution

Philippiphonte aspidosoma gen. et sp. n., a radically divergent member of the Laophontidae from shell gravel in the East Sea, South Korea, including a review of Folioquinpes Fiers &amp; Rutledge, 1990 (Copepoda, Harpacticoida)

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Philippiphonte aspidosoma gen. et sp. n., a radically divergent member of the Laophontidae from shell gravel in the East Sea, South Korea, including a review of Folioquinpes Fiers & Rutledge, 1990 (Copepoda, Harpacticoida)