FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2327832260> ?p ?o ?g. }

• W2327832260 endingPage "104" @default.
• W2327832260 startingPage "104" @default.
• W2327832260 abstract "We investigated possible relationships among pseudocoelomates (aschelminths) by using cladistic analysis to uncover all most-parsimonious trees from a data set comprising 45 morphological characters of 11 phyla (3 acoelomate, 7 pseudocoelomate, and 1 coelomate). Analysis of our matrix yielded 2 most-parsimonious trees, differing only in relative placement of 3 taxa (Kinorhyncha, Loricifera, and Priapulida). Tree topology suggests that the pseudocoel either evolved twice, or that it evolved once and was then independently lost in Gastrotricha and in Gnathostomulida. Tree topology also is consistent with derivation of the pseudocoel from a coelom. From our analysis and that of other morphologically-based studies, we conclude that there are 2 main lines of pseudocoelomate evolution: (1) a minor clade (Acanthocephala + Rotifera) defined principally by a syncytial epidermis, intracytoplasmic lamina, and sperms with anterior flagella; (2) a major clade (the 5 remaining phyla), defined primarily by a cuticle that is molted. Within the major clade are 2 subclades (Nematoda + Nematomorpha; Kinorhyncha + Loricifera + Priapulida). Using morphological data, the chief issues remaining to be resolved are placement of Gastrotricha and Gnathostomulida, and evolution of the pseudocoel. No analysis based solely on morphological data has so far produced a tree congruent with those based on molecular data. Nevertheless, there is a general consensus that (1) the pseudocoel is of little phylogenetic significance and (2) the pseudocoelomates are probably polyphyletic. Additional key words: evolution, phylogeny the face of this bewildering array of conflicting opinions about the interrelationships of the aschelminth phyla, it is impossible to form a coherent picture of the evolution of the animals. (Clark 1964) Does Clark's observation made some 30 years ago still offer a realistic view of our understanding of pseudocoelomate (aschelminth) phylogeny? Clearly, these vermiform taxa share interesting similarities. However, they also possess some striking differences, which have led many authors to choose not to include them in a single phylum, the Aschelminthes (e.g., Clark 1964; Anderson 1983; Inglis 1985; Pearse et al. 1987; Brusca & Brusca 1990; Kozloff 1990; Willmer 1990; Ruppert & Barnes 1994). In fact, for Inglis (1985) there is no common history at all, just completely independent solutions to similar evolutionary pressures. Further complicating the matter is Ruppert's (1991) view that calls into question the significance of 2 traditional characters that link the pseudocoelomates: pseudocoel and cuticle (see also Brusca & Brusca 1990). The alternative position, of course, argues for at least a loose relationship among some of these taxa (e.g., Hyman 1951; Boaden 1985; Lorenzen 1985; Sterrer et al. 1985; Bergstrom 1991; Meglitsch & Schram 1991; Malakhov 1994). The problem is to dissect possible relationships from what appears to be an intractable array of characteristics. However, there is no reason to abandon the logical search for phylogenetic relationships among these taxa. In fact, many workers have explored this field, with phylogenetic analyses that include most or all of the appropriate taxa (e.g., Lorenzen 1985; Meglitsch & Schram 1991; Schram 1991; Eernisse et al. 1992; Conway Morris 1994; Nielsen 1994; 1995; Neuhaus 1994; Winnepenninckx et al. 1995). Here we report our findings from a cladistic analysis of 45 morphological characters and 11 taxa (3 acoelomate, 7 pseudocoelomate, and 1 coelomate). We also compared trees yielded from this study to other published works. Thus, the purposes of this study were to assemble a useful set of light microscopical, ultrastructural, and biochemical characters on the pseudocoelomate taxa and to develop parsimonious cladograms (hypotheses) from those data. Such work may provide a useful foundation for the molecular data that are now forthcoming (e.g., Lake 1990; Brandl et al. 1992; This content downloaded from 157.55.39.30 on Wed, 20 Jul 2016 06:18:46 UTC All use subject to http://about.jstor.org/terms Phylogeny of pseudocoelomates Smothers et al. 1994; Garey et al. 1995; Winnepenninckx et al. 1995). A combination of morphological and molecular data may eventually lead to a comprehensive phylogeny of these taxa (cf. Hillis 1987; Patterson et al. 1993)." @default.
• W2327832260 created "2016-06-24" @default.
• W2327832260 creator A5024254162 @default.
• W2327832260 creator A5057886613 @default.
• W2327832260 creator A5077989872 @default.
• W2327832260 date "1996-01-01" @default.
• W2327832260 modified "2023-10-14" @default.
• W2327832260 title "A Cladistic Analysis of Pseudocoelomate (Aschelminth) Morphology" @default.
• W2327832260 cites W1505688286 @default.
• W2327832260 cites W1507689856 @default.
• W2327832260 cites W1522592213 @default.
• W2327832260 cites W1562702058 @default.
• W2327832260 cites W1582476847 @default.
• W2327832260 cites W1601957115 @default.
• W2327832260 cites W1937900804 @default.
• W2327832260 cites W1968046677 @default.
• W2327832260 cites W1977606907 @default.
• W2327832260 cites W1995996902 @default.
• W2327832260 cites W2005444886 @default.
• W2327832260 cites W2008286391 @default.
• W2327832260 cites W2015361468 @default.
• W2327832260 cites W2016973417 @default.
• W2327832260 cites W2031520453 @default.
• W2327832260 cites W2044088995 @default.
• W2327832260 cites W2057351657 @default.
• W2327832260 cites W2065246235 @default.
• W2327832260 cites W2065910548 @default.
• W2327832260 cites W2070665377 @default.
• W2327832260 cites W2077819286 @default.
• W2327832260 cites W2080859220 @default.
• W2327832260 cites W2082162039 @default.
• W2327832260 cites W2092203199 @default.
• W2327832260 cites W2100983857 @default.
• W2327832260 cites W2113093080 @default.
• W2327832260 cites W2124819017 @default.
• W2327832260 cites W2138131045 @default.
• W2327832260 cites W2138993829 @default.
• W2327832260 cites W214585933 @default.
• W2327832260 cites W2170558212 @default.
• W2327832260 cites W2179623624 @default.
• W2327832260 cites W2325084444 @default.
• W2327832260 cites W2702297760 @default.
• W2327832260 cites W46241905 @default.
• W2327832260 cites W589153876 @default.
• W2327832260 cites W590197378 @default.
• W2327832260 cites W596144083 @default.
• W2327832260 cites W659399033 @default.
• W2327832260 cites W3185449028 @default.
• W2327832260 doi "https://doi.org/10.2307/3227041" @default.
• W2327832260 hasPublicationYear "1996" @default.
• W2327832260 type Work @default.
• W2327832260 sameAs 2327832260 @default.
• W2327832260 citedByCount "104" @default.
• W2327832260 countsByYear W23278322602012 @default.
• W2327832260 countsByYear W23278322602014 @default.
• W2327832260 countsByYear W23278322602015 @default.
• W2327832260 countsByYear W23278322602016 @default.
• W2327832260 countsByYear W23278322602018 @default.
• W2327832260 countsByYear W23278322602021 @default.
• W2327832260 countsByYear W23278322602022 @default.
• W2327832260 crossrefType "journal-article" @default.
• W2327832260 hasAuthorship W2327832260A5024254162 @default.
• W2327832260 hasAuthorship W2327832260A5057886613 @default.
• W2327832260 hasAuthorship W2327832260A5077989872 @default.
• W2327832260 hasConcept C104317684 @default.
• W2327832260 hasConcept C20822588 @default.
• W2327832260 hasConcept C499950583 @default.
• W2327832260 hasConcept C54355233 @default.
• W2327832260 hasConcept C78458016 @default.
• W2327832260 hasConcept C86803240 @default.
• W2327832260 hasConcept C90132467 @default.
• W2327832260 hasConcept C90856448 @default.
• W2327832260 hasConceptScore W2327832260C104317684 @default.
• W2327832260 hasConceptScore W2327832260C20822588 @default.
• W2327832260 hasConceptScore W2327832260C499950583 @default.
• W2327832260 hasConceptScore W2327832260C54355233 @default.
• W2327832260 hasConceptScore W2327832260C78458016 @default.
• W2327832260 hasConceptScore W2327832260C86803240 @default.
• W2327832260 hasConceptScore W2327832260C90132467 @default.
• W2327832260 hasConceptScore W2327832260C90856448 @default.
• W2327832260 hasIssue "2" @default.
• W2327832260 hasLocation W23278322601 @default.
• W2327832260 hasOpenAccess W2327832260 @default.
• W2327832260 hasPrimaryLocation W23278322601 @default.
• W2327832260 hasRelatedWork W1208109497 @default.
• W2327832260 hasRelatedWork W2101758059 @default.
• W2327832260 hasRelatedWork W2102821920 @default.
• W2327832260 hasRelatedWork W2106612600 @default.
• W2327832260 hasRelatedWork W2173368612 @default.
• W2327832260 hasRelatedWork W2319008126 @default.
• W2327832260 hasRelatedWork W2431304159 @default.
• W2327832260 hasRelatedWork W2890775708 @default.
• W2327832260 hasRelatedWork W2898139822 @default.
• W2327832260 hasRelatedWork W4237411311 @default.
• W2327832260 hasVolume "115" @default.
• W2327832260 isParatext "false" @default.
• W2327832260 isRetracted "false" @default.
• W2327832260 magId "2327832260" @default.

• next