Nemertinos do litoral brasileiro

Corrêa, Diva Diniz

doi:10.11606/issn.2526-3382.bffclzoologia.1954.120084

Cited by 33 publications

(39 citation statements)

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“…differs from the three other species of Tubulanus known from the Atlantic coast of southern Florida: T. floridanus Coe, 1951; T. pellucidus (Coe 1895); and T. rhabdotus Corrêa, 1954. Tubulanus floridanus was minimally described by Coe (1951) from a single specimen but its base color was described as brown, thereby differing significantly from T. riceae n. sp.…”

Section: Discussionmentioning

confidence: 91%

“…obs.). Tubulanus species described from southern Florida include T. floridanus Coe, 1951, T. pellucidus (Coe 1895 and T. rhabdotus Corrêa, 1954. The present paper describes Tubulanus riceae new species, regularly found in Florida at Walton Rocks, St. Lucie County since 1983, where it occurs in crags and ''fouling'' communities of fossil coquina reef overgrown by ''worm reef'' produced by the polychaete Phragmatopoma lapidosa Kinberg, 1867.…”

Section: Introductionmentioning

confidence: 90%

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Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama

Ritger

Norenburg

2006

Journal of Natural History

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Specimens of Tubulanus riceae new species (Nemertea: Palaeonemertea) were collected from a Phragmatopoma worm reef in the surf zone at Fort Pierce (Florida, USA) and from sublittoral rubble at Carrie Bow Cay (Belize) and Bocas del Toro (Panama). They have well-developed lateral sensory organs, form a cellophane-like tube and appear to have ocelli-like structures. The latter, if confirmed as ocelli, would be the first reported for a tubulanid. The new species is characterized by a unique color pattern, resembling that of Tubulanus rhabdotus, but it is distinctive in its milky-tan ground color with annular bands of brown pigment bounded by white margins and in having up to six to eight dorsal, longitudinal, but broken, reflective white stripes.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 90%

Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama

Ritger

Norenburg

2006

Journal of Natural History

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“…Populational genetics or phylogeographic studies from meiofauna species are still underrepresented when considering the large diversity in the Brazilian coast (Winston and Migotto 2005;Albuquerque et al 2007;Di Domenico et al 2009;Venekey et al 2010). In this study, we analyzed patterns of genetic diversity based on mtDNA sequences in four widespread Ototyphlonemertes species collected along the Brazilian coast: O. erneba Corrêa (1950) Corrêa (1954) (representative of the Lactea morph), all of them easily distinguishable morphologically. In this study, our main goals were: (1) to evaluate whether there is a shared demographic history for these four species that are found along 3,000 km of the Brazilian coastline; (2) to asses the degree of genetic structuring, with a special focus on the potential dispersal capability of these species.…”

Section: Introductionmentioning

confidence: 99%

Worms without borders: genetic diversity patterns in four Brazilian Ototyphlonemertes species (Nemertea, Hoplonemertea)

2011

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Understanding the evolutionary processes from recent demographic history is especially difficult for interstitial organisms due to their poorly known natural history. In this study, the genetic variation and population history of the four Ototyphlonemertes (Diesing in Sitz ber Math Nat Kl Akad Wiss Wien 46:413-416, 1863) species were evaluated from samples collected along the Brazilian coast (between 27°31 0 S and 13°00 0 W) in 2006. The mitochondrial region cytochrome c oxidase subunit 3 (COX3) is analyzed to assess the genetic variation of these dioecious species. Although these species have a sympatric distribution along the coast, our data suggest that their levels of differentiation and their demographic histories differ sharply. There is strong evidence of gene flow among demes in O. erneba and O. evelinae, and their level of structuring is much lower than for the other two species. Indeed, the COX3 fragment reveals cryptic lineages in O. lactea and O. parmula. The results seem to contradict the high genetic structuring and low intrapopulational variability expected with the ecological constriction and habitat discontinuity faced by these organisms, meaning that there might be gene flow among populations or their dispersal capability has been underestimated.

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“…nov. differs from its 34 congeners in body coloration and markings (Table S2). Only T. rhabdotus Corrêa, 1954 and T. frenatus (Coe, 1904) are similar to T. tamias in having a pale basement body color with both longitudinal and transverse dark markings. Tubulanus tamias has seven stripes (three dorsal, a single lateral on each side, and two ventral), whereas T. frenatus has three (mid-dorsal and lateral) stripes and T. rhabdotus has only two (lateral).…”

Section: Taxonomymentioning

confidence: 98%

Tubulanus tamias sp. nov. (Nemertea: Palaeonemertea) with Two Different Types of Epidermal Eyes

et al. 2015

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Based on specimens collected subtidally (~10 m in depth) in Tomioka Bay, Japan, we describe the palaeonemertean Tubulanus tamias sp. nov., which differs from all its congeners in body coloration. In molecular phylogenetic analyses based on partial sequences of the nuclear 18S and 28S rRNA genes and histone H3, as well as the mitochondrial 16S rRNA and cytochrome c oxidase subunit I genes, among selected palaeonemerteans, T. tamias nested with part of the congeners in Tubulanus, while the genus as currently diagnosed appears to be non-monophyletic. Molecular cloning detected polymorphism in 28S rDNA sequences in a single individual of T. tamias, indicating incomplete concerted evolution of multiple copies. Tubulanus tamias is peculiar among tubulanids in having 9-10 pigment-cup eyes in the epidermis on either side of the head anterior to the cerebral sensory organs, and remarkably there are two types of eyes. The anterior 8-9 pairs of eyes, becoming larger from anterior to posterior, are completely embedded in the epidermis and proximally abutting the basement membrane; each pigment cup contains bundle of up to seven, rodshaped structure that resemble a rhabdomeric photoreceptor cell. In contrast, the posterior-most pair of eyes, larger than most of the anterior ones, have an optical cavity filled with long cilia and opening to the exterior, thus appearing to have ciliary-type photoreceptor cells. The size and arrangement of the eyes indicate that the posterior-most pair of eyes are the remnant of the larval (or juvenile) eyes.

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Nemertinos do litoral brasileiro

Abstract: Este artigo não contém resumo.

Cited by 33 publications

References 0 publications

Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama

Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama

Worms without borders: genetic diversity patterns in four Brazilian Ototyphlonemertes species (Nemertea, Hoplonemertea)

Tubulanus tamias sp. nov. (Nemertea: Palaeonemertea) with Two Different Types of Epidermal Eyes

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