Latest Articles from Zoosystematics and Evolution Latest 10 Articles from Zoosystematics and Evolution https://zse.pensoft.net/ Thu, 28 Mar 2024 21:04:50 +0200 Pensoft FeedCreator https://zse.pensoft.net/i/logo.jpg Latest Articles from Zoosystematics and Evolution https://zse.pensoft.net/ Molecular characterization and phylogenetic position of the giant deep-sea oyster Neopycnodonte zibrowii Gofas, Salas & Taviani, 2009 https://zse.pensoft.net/article/115692/ Zoosystematics and Evolution 100(1): 111-118

DOI: 10.3897/zse.100.115692

Authors: Matteo Garzia, Daniele Salvi

Abstract: The giant deep-sea oyster Neopycnodonte zibrowii Gofas, C. Salas & Taviani, 2009 is a keystone deep-sea habitat builder species. Discovered about fifteen years ago in the Azores, it has been described and assigned to the genus Neopycnodonte Fischer von Waldheim, 1835 based on morphological features. In this study, we generated DNA sequence data for both mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) markers based on the holotype specimen of N. zibrowii to establish a molecular phylogenetic framework for the systematic assessment of this species and to provide a reliable (i.e., holotype-based) reference sequence set for multilocus DNA barcoding approaches. Molecular data provide compelling evidence that the giant deep-sea oyster is a distinct species, rather than a deep-water ecophenotype of Neopycnodonte cochlear (Poli, 1795), with extremely high genetic divergence from any other gryphaeid. Multilocus phylogenetic analyses place the giant deep-sea oyster within the clade “Neopycnodonte/Pycnodonte” with closer affinity to N. cochlear rather than to P. taniguchii Hayami & Kase, 1992, thus supporting its assignment to the genus Neopycnodonte. Relationships within this clade are not well supported because mitochondrial variation is inflated by saturation that eroded phylogenetic signal, implying an old split between taxa within this clade. Finally, the set of reference barcode sequences of N. zibrowii generated in this study will be useful for a wide plethora of barcoding applications in deep-sea biodiversity surveys. Molecular validation of recent records of deep-sea oysters from the Atlantic Ocean and the Mediterranean Sea will be crucial to clarify the distribution of N. zibrowii and assess the phenotypic variation and ecology of this enigmatic species.

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Short Communication Fri, 26 Jan 2024 19:00:10 +0200
Multigene phylogeny of the Indo–West Pacific genus Enosteoides (Crustacea, Decapoda, Porcellanidae) with description of a new species from Australia https://zse.pensoft.net/article/90540/ Zoosystematics and Evolution 98(2): 387-397

DOI: 10.3897/zse.98.90540

Authors: Alexandra Hiller, Bernd Werding

Abstract: The porcellanid genus Enosteoides Johnson, 1970, currently containing six species, was raised in the 1970s to contain aberrant Indo–West Pacific forms of the diverse and cosmopolitan genus Porcellana Lamarck, 1801. Here, we describe the most aberrant form as Enosteoides spinosus sp. nov., from the northeast and northwest coasts of Australia and present results on phylogenetic reconstructions of the genus, based on an 1,870 bp alignment of concatenated DNA sequences of three mitochondrial and one nuclear gene. The new species is peculiarly spiny and has a higher morphological affinity to the type species of the genus, E. ornatus (Stimpson, 1858), than to the other congeneric species. Our molecular results indicate that Enosteoides is not monophyletic. The new species and E. ornatus are encompassed in a clade, which does not share immediate common ancestry with the clade containing the other species of Enosteoides. This clade is more closely related to species of Porcellana and Pisidia. Relatively large interspecific genetic distances between and within the two clades, as compared to distances estimated in American pairs of species on each side of the Panama Isthmus, suggest ancient divergence, probably followed by extinction events or low speciation rate. Relatively large intraspecific distances between Australian populations of the new species of Enosteoides from geographically distant locations suggest some level of phylogeographic structure.

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Research Article Tue, 4 Oct 2022 17:53:13 +0300
Corrigenda: Phylogenetic relationship of catshark species of the genus Scyliorhinus (Chondrichthyes, Carcharhiniformes, Scyliorhinidae) based on comparative morphology. Zoosystematics and Evolution 96(2): 345–395. https://doi.org/10.3897/zse.96.52420 https://zse.pensoft.net/article/56272/ Zoosystematics and Evolution 96(2): 637-637

DOI: 10.3897/zse.96.56272

Authors: Karla D. A. Soares, Marcelo R. de Carvalho

Abstract: The genus Scyliorhinus is part of the family Scyliorhinidae, the most diverse family of sharks and of the subfamily Scyliorhininae along with Cephaloscyllium and Poroderma. This study reviews the phylogenetic relationships of species of Scyliorhinus in the subfamily Scyliorhininae. Specimens of all Scyliorhinus species were examined as well as specimens of four of the 18 species of Cephaloscyllium, two species of Poroderma, representatives of almost all other catshark (scyliorhinid) genera and one proscylliid (Proscyllium habereri). A detailed morphological study, including external and internal morphology, morphometry and meristic data, was performed. From this study, a total of 84 morphological characters were compiled into a data matrix. Parsimony analysis was employed to generate hypotheses of phylogenetic relationships using the TNT 1.1. Proscyllium habereri was used to root the cladogram. The phylogenetic analysis, based on implied weighting (k = 3; 300 replications and 100 trees saved per replication), resulted in three equally most parsimonious cladograms with 233 steps, with a CI of 0.37 and an RI of 0.69. The monophyly of the subfamily Scyliorhininae is supported as well as of the genus Scyliorhinus, which is proposed to be the sister group of Cephaloscyllium. The phylogenetic relationships amongst Scyliorhinus species are presented for the frst time. 

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Corrigenda Fri, 4 Sep 2020 08:21:46 +0300
Revision of the deep-water spider crab genus, Scyramathia A. Milne-Edwards, 1880, with the description of a new species from the Mediterranean and notes on Rochinia A. Milne-Edwards, 1875, and Anamathia Smith, 1885 (Crustacea, Decapoda, Brachyura, Epialtidae) https://zse.pensoft.net/article/48041/ Zoosystematics and Evolution 96(2): 537-569

DOI: 10.3897/zse.96.48041

Authors: Bee Yan Lee, Bertrand Richer De Forges, Peter K. L. Ng

Abstract: The taxonomy of the deep-water spider crabs of the genus Scyramathia A. Milne-Edwards, 1880, is revised and four extant species are recognised from the Atlantic and western Indian Ocean: S. carpenteri (Norman, in Thomson 1873) (type species), S. umbonata (Stimpson, 1871), S. hertwigi Doflein, in Chun 1900, and S. tenuipes sp. nov. Scyramathia tenuipes sp. nov. from the Mediterreanean is easily distinguished from its congeners by its slender and elongate ambulatory legs. All species are diagnosed and figured. The taxonomy of two allied genera from the Atlantic and Mediterranean, Rochinia A. Milne-Edwards, 1875, and Anamathia Smith, 1885, are also treated and their type species redescribed and figured.

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Research Article Tue, 1 Sep 2020 08:34:08 +0300
Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London https://zse.pensoft.net/article/32803/ Zoosystematics and Evolution 95(1): 161-308

DOI: 10.3897/zse.95.32803

Authors: Paolo G. Albano, Piet A. J. Bakker, Bruno Sabelli

Abstract: We revise the type specimens of 132 nominal species of worldwide Triphoridae stored in the Natural History Museum of the United Kingdom (NHMUK), London. We provide the species name in its original combination, followed by bibliographic details of the original description, the location of the known type material, the original description (and its translation when in Latin), a diagnosis and curatorial or nomenclatural notes. We illustrated most specimens in the type series in colour and with SEM imaging and we have added the original figure whenever possible. The specimens of Triphoris alveolatus, T. granulatus, T. suturalis and T. verrucosus, all A. Adams & Reeve, 1850, T. pfeifferi Crosse & Fischer, 1865 and T. cucullatus de Folin, 1867, previously considered type material, are not considered here belonging to the type series. Adams & Reeve’s taxa should be considered nomina dubia. The name Triphora insularum is a manuscript name by H.E.J. Biggs who deposited “types” in the NHMUK but refrained from introducing the name due to the lack of apex of the studied material. We selected lectotypes for six species (T. concors Hinds, 1843, T. maxillaris Hinds, 1843, T. fuscomaculata E.A. Smith, 1904, T. shepstonensis E.A. Smith, 1906, T. eupunctata G.B. Sowerby III, 1907, and T. rufula Watson, 1886) to stabilize the nomenclature. Finally, we illustrate original specimens (although not types) of three species described by Turton, whose type material is lost.

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Research Article Mon, 22 Apr 2019 10:36:38 +0300
Redescription and reassignment of Ondina semicingulata to the Pyramidellidae, with review of the occurrence of genus Evalea in the Western Atlantic (Gastropoda) https://zse.pensoft.net/article/28765/ Zoosystematics and Evolution 94(2): 535-544

DOI: 10.3897/zse.94.28765

Authors: Alexandre D. Pimenta, Franklin N. Santos, Carlo M. Cunha

Abstract: Acteon semicingulatus Dall, 1927, previously known only by its original description is reassigned to the Pyramidellidae, in Ondina, based on the collecting of several new specimens along the coast of Brazil, in the same bathymetry as the type locality. Its shell shape variation is discussed and Odostomia (Evalea) ryclea Dall, 1927 is considered a synonymy. Other Western Atlantic species, previously allocated to other genera are transferred to Ondina: Aclis striata Verrill, 1880, Odostomia (Iolaea) hendersoni Bartsch, 1909, Evalea stocki De Jong & Coomans, 1988 and Odostomia (Evalea) emeryi Bartsch, 1955 based on conchlogical comparison to the revison by Høisæter (2014), from Northeastern Atlantic. The genus Evalea is considered to be absent in the Atlantic Ocean.

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Research Article Thu, 22 Nov 2018 09:40:56 +0200
Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum für Naturkunde, Berlin, with lectotype designations https://zse.pensoft.net/article/5936/ Zoosystematics and Evolution 92(1): 33-78

DOI: 10.3897/zse.92.5936

Authors: Paolo G. Albano, Piet A.J. Bakker

Abstract: Triphoridae is a family of marine caenogastropods with worldwide distribution. Its maximum diversity is in the Indo-Pacific province, where it is among the five most species-rich families. Taxonomic knowledge is scant and complicated by the high diversity and intra-specific variability. Knowledge of type specimens of described taxa is the fundamental first step for a taxonomic revision of the family. The Museum für Naturkunde hosts one of the most significant triphorid collections, which includes material described by W. Dunker, L. Pfeiffer, J. Thiele and E. von Martens. Type material of 29 species is described and illustrated; where appropriate, lectotypes have been designated to stabilize nomenclature. The specimens of one species, Triforis delicatula Thiele, do not fully match the original description and we refrain from selecting a lectotype, although we profusely illustrate them. Although not type material, specimens of Triforis tricincta Dunker have been included in this work to contribute to the knowledge on Dunker’s species. For all species, the original descriptions in German or Latin are reported, with a full translation into English, and remarks have been added where appropriate.

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Research Article Fri, 19 Feb 2016 15:39:41 +0200
A redescription of the type species of Oedicerina Stephensen, 1931 (Crustacea, Amphipoda, Oedicerotidae) and the description of two new species https://zse.pensoft.net/article/4207/ Zoosystematics and Evolution 90(2): 225-247

DOI: 10.3897/zse.90.8559

Authors: Charles Oliver Coleman, Michael H. Thurston

Abstract: The poorly known species Oedicerina ingolfi Stephensen, 1931 (Crustacea: Amphipoda: Oedicerotidae) is redescribed, based on new material from the Norwegian Sea. Oedicerina vaderi sp. n. from the northeast Atlantic Ocean and Oedicerina loerzae sp. n. from New Zealand waters are described raising the number of species in the genus to five. The three species treated here together with Oedicerina megalopoda Ledoyer, 1986 and Oedicerina denticulata Hendrycks & Conlan, 2003 are separated by characters of the rostrum, maxilliped, gnathopods, epimera, and by the dorsal armature of pleonites and urosomites. The genus is recorded from the Atlantic, Indian and Pacific Oceans, mainly at bathyal depths.

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Research Article Fri, 31 Oct 2014 00:00:00 +0200
New genus and two new species of driftwood hoppers (Crustacea, Amphipoda, Talitridae) from northeast Atlantic and Mediterranean coastal regions https://zse.pensoft.net/article/4132/ Zoosystematics and Evolution 90(2): 133-146

DOI: 10.3897/zse.90.8410

Authors: David J. Wildish

Abstract: A new specialist driftwood talitrid from the Swale, U.K., is figured and described as Neotenorchestia kenwildishi gen. n., sp. n. A further new driftwood talitrid, Macarorchestia pavesiae sp. n., is figured and described from coastal regions in the Adriatic Sea. Orchestia microphtalma Amanieu & Salvat, 1963 from the Atlantic coast of France is re-designated as Macarorchestia microphtalma (Amanieu & Salvat, 1963). A key is provided for the known species of driftwood talitrids in northeastern Atlantic and Mediterranean coastal regions.

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Research Article Fri, 10 Oct 2014 00:00:00 +0300
“TUBULAR GILLS” Extreme gill modification in the Thyasiroidea with the description of Ochetoctena tomasi gen. et sp. nov. (Bivalvia: Thyasiroidea) https://zse.pensoft.net/article/4129/ Zoosystematics and Evolution 90(2): 121-132

DOI: 10.3897/zse.90.8323

Authors: Graham Oliver

Abstract: Three dimensional tubular structures of the ctenidium of some thyasirid bivalves are described for the first time. The classification of the thyasirid gill is modified accordingly into five types based on the number of demibranchs, reflection of the filaments and shape of the filaments, either rod, laminar or tubular. The tubular structure is seen in its most modified form in a chemosymbiotic abyssal species from the south-east Atlantic, which is described here as Ochetoctena tomasi gen et sp. nov.

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Research Article Wed, 1 Oct 2014 00:00:00 +0300