Topic
Alitta succinea
About: Alitta succinea is a research topic. Over the lifetime, 31 publications have been published within this topic receiving 363 citations.
Papers
TL;DR: The most parsimonious trees could not be rooted such that the selected ingroup, ‘Nereididae with paragnaths’, was monophyletic, causing the monophyly of the Nereidinae as currently defined to be rejected.
Abstract: A phylogenetic analysis was conducted of the Nereidinae — those members of the Nereididae (Polychaeta) with pharyngeal paragnaths. We had two objectives: to test the monophyly of currently accepted genera, subgenera and informal subgeneric groupings within the Nereidinae, and, if warranted, to propose a more natural classification of the Nereidinae. Parsimony analyses were undertaken, including 52 terminal taxa from all genera and informal groupings from the large heterogeneous genera Nereis, Ceratonereis, Neanthes and Perinereis. Analyses of a character set of 52 informative characters yielded more than 10 000 equally parsimonious trees with a length of 176 steps (consistency index [CI] = 0.34, retention index [RI] = 0.66). Reweighting three times resulted in 445 most parsimonious trees with length 54.62 (CI = 0.59, RI = 0.79). Many characters widely used in nereidid systematics were found to exhibit high levels of homoplasy. The most parsimonious trees could not be rooted such that the selected ingroup, ‘Nereididae with paragnaths’, was monophyletic, causing us to reject the monophyly of the Nereidinae as currently defined. The following genera were well supported by the parsimony analyses and are newly diagnosed: Alitta, Ceratonereis, Pseudonereis, Simplisetia, Solomononereis and Unanereis. Alitta succinea, Pseudonereis cortezi, Pseudonereis noodti and Pseudonereis pseudonoodti are proposed as new combinations. The parsimony analysis supported the monophyly of neither Composetia, Neanthes, Nereis and Perinereis nor of any new groupings of remaining species presently placed in those genera. It is these poorly supported genera that comprise most species of Nereididae.
117 citations
TL;DR: Type and topotype materials of A. succinea and N. acutifolia were re-examined and newly collected specimens were used to evaluate genetic divergence between both species using the mitochondrial gene COI and the supposed introduction and the alien status of the species along the Mexican and Central American Pacific shores are rejected.
Abstract: The nereidid worm Alitta succinea (Leuckart, 1847), described from Western Germany, has been considered by some authors as a widespread and alien invasive species, or else as a group of morphologically indistinguishable species. Neither idea has yet been supported by critical taxonomic revisions of relevant material. Most characterizations of A. succinea were based upon a mixture of morphological features from specimens from the type locality and from other regions. Moreover, four species described from America are considered junior synonyms of A. succinea, including Nereis acutifolia Ehlers, 1901, described from the eastern tropical Pacific. The type material of the latter species has not been reviewed since its description. We re-examined type and topotype materials of A. succinea and N. acutifolia including atokous and epitokous specimens. In addition, newly collected specimens were used to evaluate genetic divergence between both species using the mitochondrial gene COI. Alitta succinea is redescribed from type material and specimens from Germany. We rejected the recent placement of the species in Neanthes and we transferred it to Alitta. Further, we refuse the synonymy of N. acutifolia with A. succinea due to morphological and molecular differences. Consequently, we regard Alitta acutifolia n. comb. as a valid species, and the supposed introduction and the alien status of A. succinea along the Mexican and Central American Pacific shores are rejected.
42 citations
TL;DR: In this paper, the authors evaluated several hypothetical scenarios to explain variation in macrofaunal communities in permanently open estuaries and open/closed coastal lagoons of the coast of Uruguay, South America.
39 citations
TL;DR: The Ragworm was the most common prey item and the only one actively selected, and contributed 79% to the diet in terms of biomass, followed by King Ragworm Alitta virens and Lugworms Arenicola marina.
Abstract: Capsule Across the European wintering range Bar-tailed Godwits Limosa lapponica lapponica selected polychaete worms and especially Ragworms Hediste diversicolor, with differences between areas due to variations in prey availability.Aims To determine the diet of Bar-tailed Godwits across their wintering range in Europe by the analysis of droppings, collected at five important wintering sites.Methods Diet was estimated by the identification of undigested prey remains in droppings. We provide the rationale for quantifying the contributions of jawed and non-jawed polychaetes.Results We identified 18 different prey species in the diet of wintering Bar-tailed Godwits. The Ragworm was the most common prey item and the only one actively selected. Ragworms, on average, contributed 79% to the diet in terms of biomass, followed by King Ragworm Alitta virens (with 17% biomass) and Lugworms Arenicola marina (with 2%). Polychaetes such as Alitta succinea and Scoloplos armiger were also regularly found in the diet. Biva...
35 citations
TL;DR: The hypothesis that the benthos is distributed according to the recently proposed concept of habitat saprobity for coastal lagoons that unifies the Pearson-Rosenberg and Guélorget-Perthuisot models is tested, which concludes that the biotic and abiotic characteristics of the Cabras lagoon can be represented by a succession of spatial zones along two main gradients determined by salinity and saProbity.
33 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 2 |
| 2018 | 3 |
| 2017 | 3 |
| 2016 | 2 |
| 2015 | 4 |
| 2014 | 4 |