Postlarval development of Nicolea uspiana (Polychaeta: Terebellidae)

Garraffoni, André Rinaldo Senna; Amaral, A. Cecília Z.

doi:10.1590/s1984-46702009000100010

Cited by 5 publications

(12 citation statements)

References 9 publications

(10 reference statements)

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“…However, this uncini arrangement is only evident in juveniles or adults, as there is only one row of chaetae in the first larval stages (Wilson 1928; Eckelbarger 1974; Bhaud and Grémare 1988; Bhaud 1988 a ; Blake 1991; Garraffoni and Amaral 2009; present data). Bhaud and Grémare (1988) pointed out that specimens of Eupolymina nebulosa have only one row of uncini until the larva is about 45 days old.…”

Section: Definitions and Characterization Of The Uncinimentioning

confidence: 56%

“… —Anterior region of a juvenile of Nicolea uspiana , in lateral view (modified from Garraffoni and Amaral 2009). br, branchiae; bt, buccal tentacles; p, prostomium; ul, upper lip; 1s, segment 1; 2s, segment 2; 3s, segment 3; 4s, segment 4; 5s, segment 5.…”

Section: Current Contradictions In the Delineation Of The Prostomiummentioning

confidence: 99%

“…Thus, it is possible to observe three distinct patterns of loss of the notochaetae and neurochaetae during development: 1 – Loimia medusa , Loimia sp., Nicolea zostericola , N . uspiana , Lanice conchilega , Eupolymnia crescentis : loss of the notochaetae and neurochaetae on two anterior segments: the first notochaetae are present on the second segment in the larva and on the fourth segment in the adult, and the first neurochaetae are present on the third segment in the larva and the fifth segment in the adult (Wilson 1928; Eckelbarger 1974; McHugh 1993; Garraffoni and Amaral 2009; present data); 2 – Ramex californiensis : loss of the notochaetae on two anterior segments and loss of the neurochaetae on one anterior segment: the first notopodium is present on the second segment in the larva and the fourth segment in the adult, and the first neuropodium is present on the fourth segment in the larva and the fifth segment in the adult (Blake 1991); 3 – Eupolymnia nebulosa : loss of the notochaetae on one anterior segment and loss of the neurochaetae on one anterior segment: the first notopodium is present on the third segment in the larva and the fourth segment in the adult, and the first neuropodium is present on the fourth segment in the larva and the fifth segment in the adult (Bhaud and Grémare 1988).…”

Section: Current Contradictions In the Delineation Of The Prostomiummentioning

confidence: 99%

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A critical review of ontogenetic development in Terebellidae (Polychaeta)

Garraffoni

Lana

2010

Acta Zoologica

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Garraffoni, A.R.S. and Lana, P.C. 2010. A critical review of ontogenetic development in Terebellidae (Polychaeta). -Acta Zoologica (Stockholm) 91: 390-401.This study reviews the ontogenetic variability of the head, the first segments and the uncini in Terebellidae, based on primary literature and development series of four terebellid species. We test hypotheses on character homologies and indicate informative characters for future phylogenetic analyses. The prostomium, identified as the region above the prototroch band of the larva, in addition to being the region of origin of the buccal tentacles, contains a series of nerves originating from the cerebrum. The peristomium, which contains the mouth, is innervated by the stomogastric nerve and consists of upper and lower lips and an internal pharynx. The loss of the first notochaetae and neurochaetae in the course of development is a recurrent pattern in terebellids. The claviform chaetae disappear with age and growth, and can be used to define the larval stage. Chaetogenesis shows that the long shaft-shaped manubrium and posterior process develop from different regions. The uncini terminology 'double rows' was reinterpreted and renamed 'inverted rows', which better reflects the inversion of chaetal positions during ontogenetic development.

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Section: Definitions and Characterization Of The Uncinimentioning

confidence: 56%

Section: Current Contradictions In the Delineation Of The Prostomiummentioning

confidence: 99%

Section: Current Contradictions In the Delineation Of The Prostomiummentioning

confidence: 99%

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A critical review of ontogenetic development in Terebellidae (Polychaeta)

Garraffoni

Lana

2010

Acta Zoologica

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“…Buccal tentacles. It is generally accepted that the tentacles of Terebellidae and Trichobranchidae are prostomial based on the morphology of the adult [26,63,77] and the larvae [78][79][80][81][82][83]. Homology of the terebellid and trichobranchid prostomial tentacles with the tentacles of Ampharetidae, Melinnidae and Pectinariidae is debated.…”

Section: Terminology and Homology Of Head And Body Structures Of Terementioning

confidence: 99%

Spaghetti to a Tree: A Robust Phylogeny for Terebelliformia (Annelida) Based on Transcriptomes, Molecular and Morphological Data

Stiller

Ekin

Rousset

et al. 2020

Biology

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Terebelliformia-"spaghetti worms" and their allies-are speciose and ubiquitous marine annelids but our understanding of how their morphological and ecological diversity evolved is hampered by an uncertain delineation of lineages and their phylogenetic relationships. Here, we analyzed transcriptomes of 20 terebelliforms and an outgroup to build a robust phylogeny of the main lineages grounded on 12,674 orthologous genes. We then supplemented this backbone phylogeny with a denser sampling of 121 species using five genes and 90 morphological characters to elucidate fine-scale relationships. The monophyly of six major taxa was supported: Pectinariidae, Ampharetinae, Alvinellidae, Trichobranchidae, Terebellidae and Melinninae. The latter, traditionally a subfamily of Ampharetidae, was unexpectedly the sister to Terebellidae, and hence becomes Melinnidae, and Ampharetinae becomes Ampharetidae. We found no support for the recently proposed separation of Telothelepodidae, Polycirridae and Thelepodidae from Terebellidae. Telothelepodidae was nested within Thelepodinae and is accordingly made its junior synonym. Terebellidae contained the subfamily-ranked taxa Terebellinae and Thelepodinae. The placement of the simplified Polycirridae within Terebellinae differed from previous hypotheses, warranting the division of Terebellinae into Lanicini, Procleini, Terebellini and Polycirrini. Ampharetidae (excluding Melinnidae) were well-supported as the sister group to Alvinellidae and we recognize three clades: Ampharetinae, Amaginae and Amphicteinae. Our analysis found several paraphyletic genera and undescribed species. Morphological transformations on the phylogeny supported the hypothesis of an ancestor that possessed both branchiae and chaetae, which is at odds with proposals of a "naked" ancestor. Our study demonstrates how a robust backbone phylogeny can be combined with dense taxon coverage and morphological traits to give insights into the evolutionary history and transformation of traits.

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“…Nicolea uspiana is one of the most abundant and widespread terebellid species on the south-eastern coast of Brazil with well-established populations occurring over a wide geographical range from the States of São Paulo to Paraná (Blankensteyn & Moreno, 1999;Nogueira, 2003;Garraffoni & Amaral, 2009;Santos et al, 2010). Garraffoni & Amaral (2009) argued that N. uspiana has indirect development with a brief planktonic stage, characteristic of lecithotrophic larvae.…”

Section: Discussionmentioning

confidence: 99%

The gametogenic cycle and life history ofNicolea uspiana(Polychaeta: Terebellidae) on the south-east coast of Brazil

2014

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The gametogenic cycle and life history of Nicolea uspiana (Nogueira, 2003) (Polychaeta: Terebellidae) was studied by taking monthly samples over a 13 month period. Each month, 10 females were sorted; 50 oocytes were removed from the coelom of each specimen, and the maximum diameter was determined. Additionally, 10 males were sorted and 100 gametes were randomly selected from each specimen to evaluate their shape and maturation stage. This species is gonochoric and exhibits slight external sexual dimorphism (in the shape of the nephridial papillae). The sex-ratio of N. uspiana was 2.4 male for each female. The initial gametic stages of both sexes are produced in special structures called nephromixia. Oogenesis is extra-ovarian, and the germ cells are clumped and surrounded by follicle cells. These cells are ovulated into the coelomic fluid, and yolk synthesis occurs in this cavity. The maximum diameter of oocytes measured, 225 mm, showed that these eggs fall into the size-range for lecithotrophy. Furthermore, N. uspiana is an iteroparous species, as the mature individuals can breed several times during their lifetime. Male gonads release germ cells early in development, and sperm maturation also occurs in the coelomic fluid. The male gametes consist of flattened plaques of germ cells attached on their anterior part by a cytophore assuming a rosette-like appearance. Following maturation of the male cells, the spermatids produce arrays of stiffly vibratile tails, assuming a morula shape. The reproductive patterns and life history of the terebellids are also discussed.

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Postlarval development of Nicolea uspiana (Polychaeta: Terebellidae)

Cited by 5 publications

References 9 publications

A critical review of ontogenetic development in Terebellidae (Polychaeta)

A critical review of ontogenetic development in Terebellidae (Polychaeta)

Spaghetti to a Tree: A Robust Phylogeny for Terebelliformia (Annelida) Based on Transcriptomes, Molecular and Morphological Data

The gametogenic cycle and life history ofNicolea uspiana(Polychaeta: Terebellidae) on the south-east coast of Brazil

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