A New Telson Teratology in the Scorpion<i>Opisthacanthus</i>Peters, 1861 (Scorpiones: Hormuridae)

Galvis, William; FLÓREZ-D., EDUARDO

doi:10.13156/arac.2006.17.3.157

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Empirical examples of type I teratologies span defects of the pedipalp, including a lack of keels and trichobothria, or a malformed finger; various hypogenetic walking legs and pectines, with deformed, fused, shortened, or missing podomeres and/or pectine teeth [ 14 – 18 ]. More common is the duplication of various body parts (type II), such as two telsons, duplication of the metasoma, and complete distal duplication of the mesosoma, whereas two aculea and duplication of the anterior part of the body is less common [ 14 , 15 , 19 ]. Type III is comparatively rare, examples including both embryos and hemispermatophores, or in the pectines in both sexes [ 14 , 15 , 20 ].…”

Section: Discussionmentioning

confidence: 99%

Homeosis in a scorpion supports a telopodal origin of pectines and components of the book lungs

Edgecombe

Sharma

2018

BMC Evol Biol

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BackgroundThe morphological and functional evolution of appendages has played a key role in the diversification of arthropods. While the ancestral arthropod appendage is held to be polyramous, terrestriality is associated with the reduction or loss of appendage rami, which may obscure the homology of different appendage derivatives. Proxies for appendage homology have included surveys of cross-reactive antibodies for wing markers like Nubbin/PDM, which have suggested that the abdominal appendages of arachnids (e.g., book lungs, tracheal tubules) are derived from ancestral gills (epipods).ResultsHere, we discovered a rare case of inferred homeosis in a scorpion in which the bilobed genital opercula and the pectines are transformed to walking legs, and an abnormal sternite shows a book lung close to an everted structure comparable to the morphology of some Palaeozoic scorpion fossils.ConclusionsThe observed morphology is consistent with abnormal expression of homeotic genes during embryonic development. The phenotype of this abnormal specimen suggests that the genital opercula, the pectines, and parts of the book lung may be derived from the telopodite of abdominal appendages rather than from epipods. This interpretation contradicts the “ancestral gill” hypothesis but reconciles features of the Palaeozoic scorpion fossil record with the embryology of modern scorpions.

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Section: Discussionmentioning

confidence: 99%

Homeosis in a scorpion supports a telopodal origin of pectines and components of the book lungs

Edgecombe

Sharma

2018

BMC Evol Biol

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“…Duplications cases were reported by Berland (1913), Karataş &Kürtüllü (2006), andTeruel &Baldazo-Monsivaiz (2015) on prosoma, pedipalp, and pectinal organs, respectively. Metasoma, vesicle, and aculeus duplications are most common duplication types reported by many scholars (Alqahtani & Badry, 2021;Berland, 1913;Briseño, 1963;Campos, 1918;Galvis & Flórez-D., 2016;Lourenço & Hypolite, 2010;Sadine, 2021;Salabi et al, 2021;Seiter & Teruel, 2014;Sergent, 1946;Shulov & Amitai, 1955;Sissom & Shelley, 1995;Vachon, 1952Vachon, , 1953Vachon, , 1972Williams, 1971). Pedipalp fusion was reported by Cao & Solórzano (1991) and pedipalp malformation cases were reported by Mattoni (2005), Graham (2006), andJahanifard et al (2008).…”

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confidence: 98%

Mesobuthus turcicus Kovařík et al., 2022'ta bir pektin anomalisi (Scorpiones: Buthidae)

Yağmur

SİPAHİOĞLU²,

YILMAZ³

et al. 2022

Comm. J. Biol.

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An anomaly was recorded in the pecten shape of the scorpion species Mesobuthus turcicus Kovařík et al., 2022 that was recently described from Turkey. In this case, it is observed that marginal and median lamellae and fulcrae are fused in the right pecten. For this reason, the pecten is bent counter clockwise. Different from other pectinal anomalies, the size of teeth is developed normally but teeth number is fewer. This teratological anomaly on pecten is described and illustrated. This is the first report of pecten anomaly based on marginal and median lamellae.

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A double monstrosity in the tick Rhipicephalus sanguineus: description of a first teratological case identified in Benin in West Africa

Adehan¹,

Kounonzo

Badarou³

et al. 2022

International Journal of Acarology

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A New Telson Teratology in the ScorpionOpisthacanthusPeters, 1861 (Scorpiones: Hormuridae)

Cited by 3 publications

References 10 publications

Homeosis in a scorpion supports a telopodal origin of pectines and components of the book lungs

Homeosis in a scorpion supports a telopodal origin of pectines and components of the book lungs

Mesobuthus turcicus Kovařík et al., 2022'ta bir pektin anomalisi (Scorpiones: Buthidae)

A double monstrosity in the tick Rhipicephalus sanguineus: description of a first teratological case identified in Benin in West Africa

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