A review of the Leptostraca of the British Isles with discussion of the genus Sarsinebalia Dahl

McCORMACK, Edward; Ashelby, Christopher W.; McGrath, David

doi:10.1590/2358-2936e2016006

Cited by 7 publications

(15 citation statements)

References 20 publications

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“…Although the central complex in Nebalia is as prominent as it is in decapods , miniaturization of the mushroom body may not be surprising if the simple morphology (reflecting behavior) of Nebalia is compared with Cascolus ravitis, the oldest known fossil stem representative of this group (approximately 430 mya: Siveter et al, 2017). Since the mid-Silurian, leptostracans have undergone morphological simplification (Dahl, 1985) and extant species (e.g., Martin et al, 1996) are mostly epibenthic scavengers or suspension feeders limited to burrowing habits in simple ecologies (McCormack et al, 2016).…”

Section: Evolved Reductions and Lossesmentioning

confidence: 99%

Mushroom Body Homology and Divergence across Pancrustacea

Strausfeld¹,

Wolff

Sayre

2019

Preprint

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Descriptions of crustacean brains have mainly focused on three highly derived lineages: the reptantian infraorders represented by spiny lobsters, lobsters, and crayfish. Those descriptions advocate the view that dome-or cap-like neuropils, referred to as "hemiellipsoid bodies," are the ground pattern organization of centers that are comparable to insect mushroom bodies in processing olfactory information. Here we challenge the doctrine that hemiellipsoid bodies are a derived trait of crustaceans, whereas mushroom bodies are a derived trait of hexapods. We demonstrate that mushroom bodies typify lineages that arose before Reptantia and exist in Reptantia. We show that evolved variations of the mushroom body ground pattern are, in some lineages, defined by extreme diminution or loss and, in others, by the incorporation of mushroom body circuits into lobeless centers. Such transformations are ascribed to modifications of the columnar organization of mushroom body lobes that, as shown in Drosophila and other hexapods, contain networks essential for learning and memory. We propose that lobed mushroom bodies distinguish crustaceans that negotiate the multidimensionality of complex ecologies, where continuous updating of multistimulus valence and memory is paramount.

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Section: Evolved Reductions and Lossesmentioning

confidence: 99%

Mushroom Body Homology and Divergence across Pancrustacea

Strausfeld¹,

Wolff

Sayre

2019

Preprint

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“…The number of known species of extant leptostracans (Crustacea: Phyllocarida) has been substantially expanded in the last decades, with descriptions of new taxa from many areas around the globe, including North and Central America (Modlin 1991;Escobar-Briones & Villalobos-Hiriart 1995;Martin et al 1996;Vetter 1996b;Haney & Martin 2000, 2005Haney et al 2001;Ortiz et al 2011), eastern and southeast Asia (Lee & Bamber 2011;Song et al 2012bSong et al , 2013, southwest Africa (Bochert & Zettler 2012), western Pacific Ocean (Ledoyer 2000) and Australia (Walker-Smith 1998. In the northeast Atlantic, following the review of European leptostracans by Dahl (1985), new taxa have been described and new records reported from across the Atlantic coasts (Ledoyer 1998;Moreira et al 2003aMoreira et al , 2003bMoreira et al , 2009aMcCormack et al 2016) and the Mediterranean Sea (Ledoyer 1997;Koçak & Katagan 2006;Koçak & Moreira 2015;Moreira et al 2007Moreira et al , 2012Moreira & Junoy 2017). Most of the extant leptostracan species belong to the genus Nebalia Leach, 1814, for a total of 11 species in European latitudes and the Mediterranean Sea (Dahl 1985;Ledoyer 1997;Moreira et al 2009a;Koçak et al 2011;McCormack et al 2016;Latry & Droual 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In the northeast Atlantic, following the review of European leptostracans by Dahl (1985), new taxa have been described and new records reported from across the Atlantic coasts (Ledoyer 1998;Moreira et al 2003aMoreira et al , 2003bMoreira et al , 2009aMcCormack et al 2016) and the Mediterranean Sea (Ledoyer 1997;Koçak & Katagan 2006;Koçak & Moreira 2015;Moreira et al 2007Moreira et al , 2012Moreira & Junoy 2017). Most of the extant leptostracan species belong to the genus Nebalia Leach, 1814, for a total of 11 species in European latitudes and the Mediterranean Sea (Dahl 1985;Ledoyer 1997;Moreira et al 2009a;Koçak et al 2011;McCormack et al 2016;Latry & Droual 2020). The genera Nebaliella Thiele, 1904, Sarsinebalia Dahl, 1985and the pelagic Nebaliopsis Sars, 1887and Pseudonebaliopsis Petryashov, 1996 have also been recorded from the NE Atlantic (Mauchline & Gage 1983;Dahl 1985) while Paranebalia Claus, 1880 has been recently reported from the Mediterranean Sea (Moreira & Junoy 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Regarding the genus Sarsinebalia, four species have been described from NE Atlantic (Sars 1870;Ledoyer 1998;Moreira et al 2003b) for a total of six worldwide (Dahl 1985;Ledoyer 2000;Petryashov 2016). The validity of the genus was challenged by the phylogenetic analyses of Walker-Smith & Poore (2001) and later discussed by Moreira et al (2003b) and McCormack et al (2016). The type species of the genus, S. typhlops (G.O.…”

Section: Introductionmentioning

confidence: 99%

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Leptostracans (Crustacea: Phyllocarida) from mud volcanoes at the Gulf of Cadiz (NE Atlantic) with description of a new species of Sarsinebalia Dahl, 1985

Moreira¹,

Esquete²,

Cunha³

2021

EJT

743

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Three leptostracan species (Crustacea: Phyllocarida) are reported from mud volcanoes at the Moroccan margin of the Gulf of Cadiz (NE Atlantic). Nebalia strausi Risso, 1826 and N. abyssicola Fage, 1929 were found in experimentally deployed organic substrates in Mercator, Meknès and Darwin mud volcanoes; N. abyssicola was also found among bathymodiolin bivalves and is recorded for the first time in the Atlantic Ocean. The third species was collected from the Gemini mud volcanoes and is described herein as Sarsinebalia ledoyeri sp. nov. The new species is characterised by having the eyes provided with ommatidia and lacking pigment, the ventral margin of the eye is concave along distal half, the antennular scale is more than twice as long as wide, the second article of the mandibular palp bears one seta on lateral surface about 0.5 times as long as the article and one subterminal seta longer than the third article, the distal article of the maxilla II endopod is about 1.8 times as long as the proximal article, the maxilla II exopod is clearly longer than the endopod proximal article, the lateral margin of the pleopod I exopod lacks setae and the posterodorsal border of pleonites VI–VII is provided with rounded to pointed denticles.

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“…Indeed, many new species of Nebalia have been described in the last 20 years and several species may coexist in the same geographic area even at small spatial scales (i.e. metres to a few kilometres) (see for instance Dahl, 1985;Martin et al, 1996;Vetter, 1996;Moreira et al, 2009;McCormack et al, 2016). In fact, the alfa-diversity of the extant Leptostraca still remains underestimated (Haney & Martin, 2016).…”

Section: Introductionmentioning

confidence: 99%

First record of the genus Paranebalia Claus, 1880 (Crustacea: Leptostraca) from the Mediterranean Sea

Moreira

Junoy

2017

Medit. Mar. Sci.

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Benthic monitoring of the marine shallow bottoms off Menorca (Balearic Islands, western Mediterranean) has yielded several specimens of the leptostracan genus Paranebalia Claus, 1880. This finding constitutes the first report of the genus from European latitudes and the Mediterranean Sea and therefore the third leptostracan genus known from the Mediterranean. Specimens are described, illustrated and compared to other known species; they might represent a new species but their state of maturity and the lack of an appropriate diagnosis for the type species of the genus, Paranebalia longipes (Willemöes-Suhm, 1875), did not allow to confirm its taxonomic status.

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A review of the Leptostraca of the British Isles with discussion of the genus Sarsinebalia Dahl

Cited by 7 publications

References 20 publications

Mushroom Body Homology and Divergence across Pancrustacea

Mushroom Body Homology and Divergence across Pancrustacea

Leptostracans (Crustacea: Phyllocarida) from mud volcanoes at the Gulf of Cadiz (NE Atlantic) with description of a new species of Sarsinebalia Dahl, 1985

First record of the genus Paranebalia Claus, 1880 (Crustacea: Leptostraca) from the Mediterranean Sea

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