&lt;p class="HeadingRunIn"&gt;&lt;strong&gt;Two new species of Cirratulidae (Annelida: Polychaeta) from Mar del Plata, Argentina (SW Atlantic)&lt;/strong&gt;&lt;/p&gt;

Elías, Rodolfo; Rivero, María S.

doi:10.11646/zoosymposia.2.1.12

Cited by 16 publications

(6 citation statements)

References 15 publications

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“…It has been postulated that certain species belonging to the Cirratulidae family could regulate the metabolism of metals (Pocklington and Wells 1992;Reish and Gerlinger 1997). Cirratulids are also considered to be indicators of moderate or intermediate organic pollution (Elías and Rivero 2009). Finally, L. verax was the dominant species in the middle and final section of the sewage channel (sites 3 and 5), where there is lower metal concentration and turbidity.…”

Section: Discussionmentioning

confidence: 99%

Efecto de los efluentes cloacales sobre el ensamble macrobentónico submareal en un estuario urbano de la Argentina

et al. 2020

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We examined spatial variations in the biological descriptors of macrobenthic assemblage in relation to environmental parameters and metal distribution in the sediments along a channel of Bahía Blanca estuary affected by non-treatment sewage effluents. Along the channel, metal concentration values were higher than those in the internal estuary area, a sector considered as a reference site. The highest values of water turbidity and metal content in sediments were observed in the effluent discharge zone and at the site where sediments from dredging activities were deposited two years ago. The density of macrobenthic assemblages decreased towards the effluent discharge zone, but the richness and diversity reached to minimum values in both disturbed areas. Only two species of polychaetes were associated with these areas: Laeonereis acuta and Aphelochaeta sp.; the former being found in the effluent discharge zone, where Cd and Pb were most abundant, and the latter being the dominant species in the site characterized by dredging material and high concentrations of Cr and Ni. This study is the first approach to explore the impact of anthropogenic activities over the macrobenthic assemblage of the Bahía Blanca estuary, providing background data to use future management decisions.

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Section: Discussionmentioning

confidence: 99%

Efecto de los efluentes cloacales sobre el ensamble macrobentónico submareal en un estuario urbano de la Argentina

et al. 2020

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“…Rouse (2001) suggests that during development the peristomium may split into additional achaetous segmental rings, determining a change of position of the first branchial pair, with the subsequent appearance of palps. The fact that cirratulids have the first achaetous segment is questionable (Blake, 1996), and in (re-)described species of Atlantic and Pacific Aphelochaeta , Caulleriella and Chaetozone , the true first segment is chaetigerous, although preceded by some achaetigerous annulations (Chambers, 2000; Doner & Blake, 2006, 2009; Dean & Blake, 2007; Elías & Rivero, 2009).…”

Section: Discussionmentioning

confidence: 99%

Small-scale distribution patterns of two cirratulid species with a description of a peculiar early juvenile stage

Cosentino

2013

J. Mar. Biol. Ass.

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An assemblage of cirratulids in a confined marine basin (Mediterranean Sea) was investigated at small spatio-temporal scales in an experiment in which artificial granules of expanded fire-clay were used as a bare substratum for colonization. Analysis of core samples of 3.5 l undisturbed natural sediments (source area) and equal volumes of artificial substratum (new settlement area), plunged into the sea bottom were carried out from May to July 2008 after 0, 15, 30 and 60 days. Caulleriella bioculata showed the highest total mean density of 10.1 ± 5.8 N l−1 in the natural sediment, and the lowest at 0.13 ± 0.08 N l−1in the artificial substratum, with a marked temporal decrease. Individuals were not strongly aggregated and were found in a deeper sediment layer. The density of large Cirriformia tentaculata was 0.5 ± 0.3 N l−1, with individuals more aggregated and confined to shallower sediments, versus 0.10 ± 0.06 N l−1 but found deeper in the artificial substratum; temporal trends were not straightforward for this species. The adult stage of sedentary cirratulids appeared to actively move into the new available substratum from the neighbouring sediments. An early cirratulid juvenile stage was observed in both microhabitats at a comparable density of 1.8 ± 2.8 N l−1 with highly aggregated individuals (cohorts). The peculiar morphology of branchiae, the threadlike body shape and the multivariate morphological differences between two sub-populations settled in the different substrata are reported for these problematic specimens.

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“…In the Cirratulidae family, the extent of diversity remains elusive, primarily attributed to the misclassification of a considerable number of cosmopolitan and yet-to-be-documented species [1][2][3][4][5]. Nevertheless, recent advancements in the field of Cirratulidae study have undertaken a comprehensive examination and documentation of various species, significantly augmenting our understanding of this family.…”

Section: Introductionmentioning

confidence: 99%

Protocirrineris stormae: A New Species of Polychaete from The Netherlands (Annelida: Polychaeta: Cirratulidae)

Lezzi,

Van Haaren

2024

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Specimens belonging to a new species in the genus Protocirrineris have been found during surveys along the southwestern coasts of the Netherlands. Protocirrineris stormae sp. nov, as described herein, were collected from the muddy bottom sediments in enclosed marine waterbodies and estuaries. This species is characterized by branchiae commencing from the first chaetiger and tentacular filaments arranged in two groups arising from chaetigers 2–3 that present one/two pairs of lobes, each bearing a single dorsal tentacle. From the current records of this species, it seems that P. stormae has an affinity for enclosed marine environments or parts of estuaries with minimal variability in salinity, higher transparency, and normal temperature regime. The discovery and study of this species contributes to a comprehensive characterization of benthic fauna in locations subjected to particular environmental stresses. Considering the extensive dataset available from the Southwestern Netherlands due to many years of sampling, it is plausible that P. stormae is a pseudo-indigenous species as there seem to be no records of similar or unknown Protocirrineris before 2013.

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<p class="HeadingRunIn"><strong>Two new species of Cirratulidae (Annelida: Polychaeta) from Mar del Plata, Argentina (SW Atlantic)</strong></p>

Cited by 16 publications

References 15 publications

Efecto de los efluentes cloacales sobre el ensamble macrobentónico submareal en un estuario urbano de la Argentina

Efecto de los efluentes cloacales sobre el ensamble macrobentónico submareal en un estuario urbano de la Argentina

Small-scale distribution patterns of two cirratulid species with a description of a peculiar early juvenile stage

Protocirrineris stormae: A New Species of Polychaete from The Netherlands (Annelida: Polychaeta: Cirratulidae)

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