2018
DOI: 10.1371/journal.pone.0201702
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Morphological description, character conceptualization and the reconstruction of ancestral states exemplified by the evolution of arthropod hearts

Abstract: Arthropods are the most species-rich taxon within Metazoa and have gone through major evolutionary changes with regard to body organization. Arthropod hearts and their associated vascular systems are thus morphologically highly disparate: while some arthropods exhibit very powerful hearts and complex vascular systems, other arthropods do not possess any kind of vascular system or heart at all. A comprehensive study investigating the structure of arthropods hearts has never been undertaken. In this study, we th… Show more

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Cited by 16 publications
(22 citation statements)
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“…A handful of orthologues ( Nkx2.5/Tinman, GATA 4/5/6/Pannier, Hand1/2, Tbx5, Mef2c ) in mesodermal precardiac tissues are referred to as “heart regulatory kernel” or “core cardiac transcription factors,“ followed by various sets of “terminal selectors” or “patterning genes,” with very different outcomes in ascidians and vertebrates, which can be extended to other taxa such as insects and mollusks . In arthropods, the various types of circulation have recently been described . The Drosophila open circulatory system contains a heart consisting of 52 cell pairs surrounding a cardiac cavity and lined by nonmuscle pericardial cells with shared ontogenetic origin.…”
Section: Cardiac Precursorsmentioning
confidence: 99%
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“…A handful of orthologues ( Nkx2.5/Tinman, GATA 4/5/6/Pannier, Hand1/2, Tbx5, Mef2c ) in mesodermal precardiac tissues are referred to as “heart regulatory kernel” or “core cardiac transcription factors,“ followed by various sets of “terminal selectors” or “patterning genes,” with very different outcomes in ascidians and vertebrates, which can be extended to other taxa such as insects and mollusks . In arthropods, the various types of circulation have recently been described . The Drosophila open circulatory system contains a heart consisting of 52 cell pairs surrounding a cardiac cavity and lined by nonmuscle pericardial cells with shared ontogenetic origin.…”
Section: Cardiac Precursorsmentioning
confidence: 99%
“…27 In arthropods, the various types of circulation have recently been described. 28 The Drosophila open circulatory system 29 contains a heart consisting of 52 cell pairs surrounding a cardiac cavity and lined by nonmuscle pericardial cells with shared ontogenetic origin. Notwithstanding different morphogenetics, vertebrate and fly heart development show many commonalities.…”
Section: Cardiac Precursorsmentioning
confidence: 99%
“…The single difference in the vasculature is the absence of an anterior aorta. While other decapod groups such as anomurans (Keiler et al, ), crayfish (Scholz et al, ), and caridean shrimps (Pillai, ), and actually most arthropods in general (Göpel & Wirkner, ; Wirkner et al, ), exhibit an anterior aorta, P. vannamei is lacking such an artery. Young () described a fine unpaired anterior artery for Penaeus setiferus which he concluded might be a vestige of the anterior aorta (an idea taken up and generalized for Dendrobranchiata by McLaughlin, ), but Mayrat () explicitly noted the lack of an anterior aorta for Penaeus kerathurus .…”
Section: Discussionmentioning
confidence: 80%
“…If the vascular system in P. vannamei were to consist only of a heart and one short anterior aorta (e.g., as in copepods), there would most likely be no significant hemolymph flow in the pleon or the appendages and homeostasis could not be upheld. Such simple vascular systems are thus only found in minute arthropods, independent of their phylogenetic position (Göpel & Wirkner, ; Wirkner et al, ). Larger arthropods have evolved a remarkable disparity of vascular systems, with those in horseshoe crabs, pulmonate arachnids, and decapod crustaceans—the three taxa boasting the largest arthropod organisms—doubtlessly exhibiting the highest complexity (Göpel & Wirkner, ; Klußmann‐Fricke et al, ; McGaw & Reiber, ).…”
Section: Discussionmentioning
confidence: 99%
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