Revision of the genus Harmothoe Kinberg, 1856 (Polychaeta: Polynoidae) in the Northeast Atlantic

Barnich, Ruth; Fiege, Dieter

doi:10.11646/zootaxa.2104.1.1

Cited by 29 publications

(20 citation statements)

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“…Barnich & Fiege, 2009). Harmothoe evei, however, clearly differs by the following characters: (1) neurochaetae with rather straight tip and secondary tooth in bidentate neurochaetae slender, fragile while neurochaetae in H. dannyi sp.…”

Section: Description ( Based On Holotype )mentioning

confidence: 99%

“…nov. eyes are small, but pigmented. Harmothoe vagabunda differs also by the absence of a neuropodial supra-acicular and in H. anoculata the microtubercles are smaller and more conical (see Hartmann-Schröder, 1975;Pettibone, 1985;Barnich & Fiege, 2009 , 4, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 26, 29, 32 (15 pairs) diagnosis Elytra with scattered flask-shaped papillae and some large, triangular papillae with terminal constriction present in a row near posterior margin. Long notochaetae with distinctly bidentate tip, similar to tip in neurochaetae.…”

Section: Etymologymentioning

confidence: 99%

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Scale worms (Polychaeta: Aphroditiformia) associated with cold-water corals in the eastern Gulf of Mexico

2013

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During a recent cruise to investigate the cold-water coral habitats in the eastern Gulf of Mexico seven scale worm species (Polychaeta: Aphroditiformia) were found, with four of them new to science:Laetmonice tunicatasp. nov. (Aphroditidae);Eunoe purpureaTreadwell, 1936,Gorgoniapolynoe caeciliae(Fauvel, 1913),Harmothoe dannyisp. nov.,Harmothoe cedricisp. nov. andSubadyte campechensissp. nov. (Polynoidae); andLeanira robustaVerrill, 1885 (Sigalionidae). An extended taxonomic account is given for all species, with detailed descriptions and figures for the new species. Three of the five polynoid species were found associated with a coral host:E. purpureawithBathypathescf.alternataBrook, 1898 (Antipatharia);G. caeciliaewithAcanthogorgia armataVerrill, 1878 andCandidella imbricata(Johnson, 1862) (Octocorallia) andH. dannyisp. nov. withStylaster erubescensPourtalès, 1868 (Hydrozoa). These associations are characterized in detail and documented byin situROV pictures and microscopic images and videos of the live animals, together with their respective host.

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Section: Description ( Based On Holotype )mentioning

confidence: 99%

Section: Etymologymentioning

confidence: 99%

Scale worms (Polychaeta: Aphroditiformia) associated with cold-water corals in the eastern Gulf of Mexico

2013

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“…Aphroditiformia, commonly known as scale worms, is a large group of annelids having dorsal scale‐like structures called elytra (Rouse & Pleijel, ; WoRMS Editorial Board ). Scale worms have successfully adapted to all marine environments, including caves, and are obligate predators armed with a muscular proboscis and raptorial‐like jaws (Barnich & Fiege, ; Rouse & Pleijel, ). To date, several scale worms have been recorded in cave habitats, ranging from being present in the interstitial environment of sandy sediments to living in larger crevices, and even within the water column of large cave systems (Gerovasileiou et al., ).…”

Section: Introductionmentioning

confidence: 99%

Anophthalmia and elongation of body appendages in cave scale worms (Annelida: Aphroditiformia)

et al. 2017

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This study addresses whether cave dwelling annelids exhibited similar reductive and constructive traits equally as strong as those of arthropods and vertebrates inhabiting caves. Known as troglomorphism, these adaptations bring about striking morphologies across invertebrates and vertebrates from both aquatic and terrestrial cave habitats, and include varying degrees of eye and pigmentation loss, as well as hypertrophy of body appendages and sensorial structures. Employing phylogenetic comparative methods and ancestral character reconstructions on a worldwide data set of a group of annelids, the scale worms (Aphroditiformia), we investigate the behavioural and morphological traits of species living in marine caves in comparison with those species living outside caves. Our work demonstrated that cave scale worms respond similar to arthropods in cave environments, showing a significant elongation of sensory parapodial cirri, while lacking eyes and pigmentation. However, whereas elongation of sensory appendages likely occurred in correlation to cave colonization, eyes were plausibly lost in correlation with specialization and colonization of deepsea habitats. K E Y W O R D Sadaptation, hypogean, phylogenetic comparative methods, phylogenetic signal, troglomorphism

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“…All Pisione have been coded as having rugose palps. Aphroditidae and Polynoidae taxa of outgroups exhibit papillose palps (e.g., Barnich & Fiege, 2009;Pettibone, 1986), and Palmyra aurifera has ciliated palps (Watson Russell, 1989).…”

Section: Discussionmentioning

confidence: 99%

Phylogeny and biogeography of the scaleless scale worm Pisione (Sigalionidae, Annelida)

Gonzalez

Petersen

Domênico

et al. 2017

Ecology and Evolution

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Pisione is a scaleless group of small scale worms inhabiting sandy bottoms in shallow marine waters. This group was once considered rare, but now 45 described species can be characterized, among others, by their paired, segmental copulatory organs (one to multiple external pairs), which display a complexity of various accessory structures. The evolutionary significance of these unique organs was suggested in the late 1960s, but has been heavily debated since the late 1990s and remains controversial. In the present paper, we study the internal relationships within Pisione, employing combined phylogenetic analyses of both molecular and morphological data from 16 terminals of Pisione, as well as two terminals of Pisionidens, and eight additional scale worms as outgroups. Our taxon sampling covers all geographical areas where the genus has been reported, as well as most of their morphological and copulatory variability, including representatives of the “africana,” “remota,” “crassa,” and “papuensis” groups, established previously by Yamanishi. We hereby provide a first insight into the relationships of the genus, testing previously proposed hypotheses on the evolutionary significance of male copulatory structures within Pisione, while attempting to understand patterns of distribution. The phylogenetic analyses using maximum likelihood and Bayesian methods consistently recovered two large clades spanning the East Atlantic (including the Mediterranean) and the Indo‐Pacific–West Atlantic, respectively. Character optimization on our trees revealed a high degree of homoplasy in both non‐reproductive and sexual characters of Pisione, with buccal acicula found to be the sole apomorphy among the morphological features assessed herein, with none defining the biogeographical subclades within. Overall, our comparative analyses highlight the high degree of morphological variation in this widely distributed genus, rejecting previous assertions of an increasing number and complexity of copulatory structures across the genus.

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Revision of the genus Harmothoe Kinberg, 1856 (Polychaeta: Polynoidae) in the Northeast Atlantic

Cited by 29 publications

References 2 publications

Scale worms (Polychaeta: Aphroditiformia) associated with cold-water corals in the eastern Gulf of Mexico

Scale worms (Polychaeta: Aphroditiformia) associated with cold-water corals in the eastern Gulf of Mexico

Anophthalmia and elongation of body appendages in cave scale worms (Annelida: Aphroditiformia)

Phylogeny and biogeography of the scaleless scale worm Pisione (Sigalionidae, Annelida)

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