FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2324492769> ?p ?o ?g. }

• W2324492769 endingPage "221" @default.
• W2324492769 startingPage "221" @default.
• W2324492769 abstract "The pericalymma larva of the protobranch bivalve Acila castrensis is described from sections and whole mounts using light and electron microscopy. This is one of few published descriptions of a protobranch larva and the first ultrastructural study of a member of the order Nuculoida. Comparisons with other protobranch pericalymmae are made with respect to size, morphology, ciliation, development mode, and larval period. Early embryogenesis follows a typical bivalve pattern and by day 5 results in a fully formed, barrel-shaped pericalymma with prominent apical tuft. The larva is planktic and lecithotrophic. It propels itself with three transverse bands of cilia and a patch of accessory locomotory cilia. Late-stage larvae become laterally compressed as the shell develops. Metamorphosis occurs at day 8 with shedding of the larval test. The pericalymma of A. castrensis most closely resembles that of Nucula proxima and N. turgida. They share features that are possibly unique to the Nuculidae including an ovoid form, 2 ab-apical openings in the test, a post-anal structure, no statocyst, and reduced musculature. The post-anal organ of A. castrensis is a unique larval organ possessing two types of cilia and a small cavity near the tip. The organ begins to form during mid-embryogenesis and most likely serves as a sensory device in site selection or as a locomotory director, but may perform other functions. The protobranch pericalymma may represent a modification of the veliger larva form, a precursor to the veliger form, or the veliger and pericalymma may have diverged from a common ancestral developmental form. The pericalymma also shares morphological similarities with the developmental forms of aplacophorans, archaeogastropods, polyplacophorans, and scaphopods; all possess a test or velum with ciliary bands, and some possess a posterior protrusion. Further work is needed among these developmental forms to ascertain structural homologies and phylogenetic affinities. Additional key words: bivalve evolution, developmental form, larval organ, test, velum The pericalymma larva of protobranch bivalves differs from the typical veliger larvae of most marine lamellibranchs in being barrel-shaped and cloaked with an outer, cellular, locomotory test or calyrnma. The test entirely covers the developing larva, including the shell, and is cast off at metamorphosis at which time the new juvenile commences a benthic existence. The term pericalymma was originally applied to a larval form considered primitive among the annelids, molluscs, and sipunculans (Salvini-Plawen 1972, 1973, 1980). We have adopted the term in a narrower sense, as others have, to refer to the larval form of protobranch bivalves and aplacophorans (Jablonski & a Author for correspondence. E-mail: jzardus @ lynx.neu.edu Currently on leave at the National Science Foundation, Arlington, Virginia 22230, USA Lutz 1983; Gustafson & Reid 1986, 1988a, 1988b; Gustafson 1987; Gustafson & Lutz 1992; Morse & Zardus 1997). Though distinct from other bivalve developmental forms, pericalymma morphology and embryogenesis are not uniform within the subclass Protobranchia, which includes the orders Nuculoida and Solemyoida and 11 or 12 families (Allen & Hannah 1986; Maxwell 1988). The full range of form and development in this subclass remains largely unknown, as few species have been examined. Previous descriptions consist of early accounts of 3 nuculoids (Drew 1897, 1899a, 1899b, 1901) and recent ultrastructural investigations of 2 solemyoids (Gustafson & Reid 1986, 1988a, 1988b; Gustafson 1987; Gustafson & Lutz 1992). Only 3 of these studies follow development from the single-cell stage (Drew 1901; Gustafson & Reid 1986; Gustafson & Lutz 1992)." @default.
• W2324492769 created "2016-06-24" @default.
• W2324492769 creator A5041663172 @default.
• W2324492769 creator A5044693397 @default.
• W2324492769 date "1998-01-01" @default.
• W2324492769 modified "2023-09-23" @default.
• W2324492769 title "Embryogenesis, Morphology and Ultrastructure of the Pericalymma Larva of Acila castrensis (Bivalvia: Protobranchia: Nuculoida)" @default.
• W2324492769 cites W1494712239 @default.
• W2324492769 cites W1970340013 @default.
• W2324492769 cites W1980699185 @default.
• W2324492769 cites W1995349078 @default.
• W2324492769 cites W1996150933 @default.
• W2324492769 cites W2003827097 @default.
• W2324492769 cites W2019126938 @default.
• W2324492769 cites W2022133404 @default.
• W2324492769 cites W2046848334 @default.
• W2324492769 cites W2047242573 @default.
• W2324492769 cites W2051433703 @default.
• W2324492769 cites W2056733232 @default.
• W2324492769 cites W2060347297 @default.
• W2324492769 cites W2060940665 @default.
• W2324492769 cites W2066923432 @default.
• W2324492769 cites W2073953111 @default.
• W2324492769 cites W207832348 @default.
• W2324492769 cites W2079790635 @default.
• W2324492769 cites W2084474298 @default.
• W2324492769 cites W2123577815 @default.
• W2324492769 cites W2170840442 @default.
• W2324492769 cites W2231479169 @default.
• W2324492769 cites W2477715807 @default.
• W2324492769 cites W2480244865 @default.
• W2324492769 cites W2480362218 @default.
• W2324492769 cites W2526409349 @default.
• W2324492769 cites W2738400058 @default.
• W2324492769 cites W413181637 @default.
• W2324492769 cites W659399033 @default.
• W2324492769 cites W3183583069 @default.
• W2324492769 doi "https://doi.org/10.2307/3226988" @default.
• W2324492769 hasPublicationYear "1998" @default.
• W2324492769 type Work @default.
• W2324492769 sameAs 2324492769 @default.
• W2324492769 citedByCount "40" @default.
• W2324492769 countsByYear W23244927692012 @default.
• W2324492769 countsByYear W23244927692013 @default.
• W2324492769 countsByYear W23244927692014 @default.
• W2324492769 countsByYear W23244927692015 @default.
• W2324492769 countsByYear W23244927692016 @default.
• W2324492769 countsByYear W23244927692017 @default.
• W2324492769 countsByYear W23244927692018 @default.
• W2324492769 countsByYear W23244927692022 @default.
• W2324492769 crossrefType "journal-article" @default.
• W2324492769 hasAuthorship W2324492769A5041663172 @default.
• W2324492769 hasAuthorship W2324492769A5044693397 @default.
• W2324492769 hasConcept C105702510 @default.
• W2324492769 hasConcept C173758957 @default.
• W2324492769 hasConcept C18903297 @default.
• W2324492769 hasConcept C196843134 @default.
• W2324492769 hasConcept C2776249982 @default.
• W2324492769 hasConcept C2779586492 @default.
• W2324492769 hasConcept C499950583 @default.
• W2324492769 hasConcept C86803240 @default.
• W2324492769 hasConcept C87073359 @default.
• W2324492769 hasConcept C87555872 @default.
• W2324492769 hasConcept C90856448 @default.
• W2324492769 hasConcept C95444343 @default.
• W2324492769 hasConceptScore W2324492769C105702510 @default.
• W2324492769 hasConceptScore W2324492769C173758957 @default.
• W2324492769 hasConceptScore W2324492769C18903297 @default.
• W2324492769 hasConceptScore W2324492769C196843134 @default.
• W2324492769 hasConceptScore W2324492769C2776249982 @default.
• W2324492769 hasConceptScore W2324492769C2779586492 @default.
• W2324492769 hasConceptScore W2324492769C499950583 @default.
• W2324492769 hasConceptScore W2324492769C86803240 @default.
• W2324492769 hasConceptScore W2324492769C87073359 @default.
• W2324492769 hasConceptScore W2324492769C87555872 @default.
• W2324492769 hasConceptScore W2324492769C90856448 @default.
• W2324492769 hasConceptScore W2324492769C95444343 @default.
• W2324492769 hasIssue "3" @default.
• W2324492769 hasLocation W23244927691 @default.
• W2324492769 hasOpenAccess W2324492769 @default.
• W2324492769 hasPrimaryLocation W23244927691 @default.
• W2324492769 hasRelatedWork W1985631153 @default.
• W2324492769 hasRelatedWork W2058747951 @default.
• W2324492769 hasRelatedWork W2066525979 @default.
• W2324492769 hasRelatedWork W2171819436 @default.
• W2324492769 hasRelatedWork W2172485017 @default.
• W2324492769 hasRelatedWork W2598984856 @default.
• W2324492769 hasRelatedWork W2787313752 @default.
• W2324492769 hasRelatedWork W2937117390 @default.
• W2324492769 hasRelatedWork W3081817983 @default.
• W2324492769 hasRelatedWork W570431877 @default.
• W2324492769 hasVolume "117" @default.
• W2324492769 isParatext "false" @default.
• W2324492769 isRetracted "false" @default.
• W2324492769 magId "2324492769" @default.
• W2324492769 workType "article" @default.