Sipuncula from southern Brazil

Cutler, Edward B.; Cutler, Norma J.

doi:10.1590/s0373-55241980000100001

Cited by 3 publications

(5 citation statements)

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“…misakianum was found in shallow waters (1-77 m) of the Indian Ocean (Cutler and Cutler, 1996;Saiz Salinas, 1993); from intertidal to 160 m depths in Japan (Cutler et al, 1984) and at 166 m from the outer Continental Shelf of Southern Brazil (Cutler and Cutler, 1980). In the present study, this species was found at depths ranging from 41 to 195 m.…”

Section: Discussionsupporting

confidence: 54%

“…However, the maximum trunk length (7.8 mm) of Apionsoma (A.) misakianum from the Aegean Sea is much smaller than those reported from the Indian (49 mm) (Cutler, 1994) and Pacific Oceans (25 mm) (Stephen and Edmonds, 1972), but somewhat similar to those from southern Brazil (5 mm) (Cutler and Cutler, 1980). In addition, the number of intestinal coils (6-10 coils) given by Stephen and Edmonds (1972) for this species was lower than that of the present specimens (11-23 coils).…”

Section: Discussionmentioning

confidence: 72%

“…15d-e;Cutler, 1973: 143-144. Golfingia (Apionsoma) misakiana: Cutler and Cutler, 1980: 1. Apionsoma misakiana; Cutler et al, 1984: 300-301, Fig.…”

Section: Resultsmentioning

confidence: 99%

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Observations on the population characteristics of<i> Apionsoma (Apionsoma) misakianum </i>(Sipuncula: Phascolosomatidae), a new species for the Mediterranean fauna

Açık

2007

Sci. Mar.

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SUMMARY: The present paper deals with the ecology and population characteristics of the sipunculid Apionsoma (A.) misakianum from the Aegean Sea, which is a new record for the Mediterranean Sea. A total of 571 specimens of this species were collected at 25 stations between 41 and 195 m depth. The majority of specimens were found between the depth intervals 101-150 m (46%) and 151-200 m (45.2%). The biometrical parameters such as the trunk length and individual wet weight of the specimens were evaluated using regression and correlation analyses. In addition, the morphological, ecological and distributional features of the species are given and discussed.Keywords: Apionsoma (Apionsoma) misakianum, Sipuncula, distribution, ecology, biometry, Aegean Sea, Mediterranean Sea. RESUMEN: OBSERVACIONES SOBRE LAS CARACTERÍSTICAS POBLACIONALES DE APIONSOMA (APIONSOMA) MISAKIANUM(SIPUNCULA: PHASCOLOSOMATIDAE), UNA NUEVA ESPECIE PARA LA FAUNA MEDITERRÁNEA. -El presente trabajo trata sobre la ecología y características poblacionales del sipuncúlido Apionsoma (A.) misakianum en el Mar Egeo, lo que constituye la primera cita de esta especie en el Mar Mediterráneo. Un total de 571 especímenes de esta especie fueron recolectados en 25 estaciones a profundidades comprendidas entre 41 y 195 m. La mayor parte de ejemplares se encontró en los intervalos de profundidad 101-150 m (46%) y 151-200 m (45.2%). Los parámetros biométricos, como la longitud del tronco y el peso húmedo individual, fueron evaluados usando análisis de regresión y correlación. Adicionalmente, se presentan y discuten las características morfológicas, ecológicas y de distribución de la especie.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 72%

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Observations on the population characteristics of<i> Apionsoma (Apionsoma) misakianum </i>(Sipuncula: Phascolosomatidae), a new species for the Mediterranean fauna

Açık

2007

Sci. Mar.

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“…Horizontal advection is an important process in the redistribution of temperature in areas where the surface currents and horizontal gradients in SST are relatively strong. South of the STI, both the historic ship drift vectors [ Cutler and Swallow , 1984; Mariano et al , 1995] and direct current measurements from moored stations and shipboard profiling [ Schott et al , 1994] show strong seasonal cycle with westward (eastward) flowing Northeast Monsoon Current (SMC). A moored current meter array deployed south of Sri Lanka showed the exchanges between the BoB and the AS resulting from the monsoon forcing [ Reppin et al , 1999].…”

Section: Resultsmentioning

confidence: 99%

Observed mini‐cold pool off the southern tip of India and its intrusion into the south central Bay of Bengal during summer monsoon season

Rao¹,

Girishkumar²,

Ravichandran³

et al. 2006

Geophysical Research Letters

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[1] The observed mini-cold pool (MCP) off the southern tip of India (STI) and its intrusion into the south central Bay of Bengal (BoB) during the summer monsoon season is examined utilizing the available satellite and in situ measurements. The mechanisms that govern the occurrence of this MCP through surface wind field and its curl, net surface heat flux and divergence in the near-surface circulation (Ekman + geostrophic) are examined. The observed MCP primarily appears to be driven by the upwelling caused by the divergence in the near-surface circulation. The upwelling results in both shoaling of thermocline and enhanced blooming of chlorophyll-a. With the progress of the season the sea surface temperature (SST) cooling associated with MCP intrudes into the south central BoB by the Summer Monsoon Current (SMC).

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“…Sipunculans in Southwest Atlantic are still poorly known. In Brazil, the collection of this organism along the coast was mainly made by oceanographic expeditions at the continental shelf [103][104][105][106]. Besides that, the benthos from the intertidal zone and beyond the continental shelf of the Brazilian coast are still poorly or completely unexplored [107].…”

Section: Geographic Coveragementioning

confidence: 99%

How Many Sipunculan Species Are Hiding in Our Oceans?

Schulze

Kawauchi

2021

Diversity

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Sipuncula, long considered a separate phylum, are now commonly included in the Annelida based on phylogenomic analyses. The sipunculan body consists of an unsegmented trunk and a retractable introvert, usually with a set of tentacles at its anterior end. Unlike other annelids, they have no chaetae, but the introvert is often adorned with proteinaceous hooks that can be important taxonomic characters. Other external taxonomic characters include the tentacles (number, shape and arrangement), body papillae and, in some cases, hardened shields, as well as length ratios. Many species require dissection for correct identification to reveal internal characteristics, such as introvert retractor muscles, nephridia and contractile vessels. Here we summarize the state of the current knowledge of species diversity in sipunculans. We emphasize molecular studies, conducted over the past two decades, that have revealed multiple complexes of cryptic or pseudocryptic species. It has become obvious that diversity is significantly higher than the current taxonomic scheme accounts for, but formal species descriptions are lagging behind. Although the major branches in the sipunculan phylogeny have become increasingly consolidated, the internal relationships within most branches are still in flux.

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Sipuncula from southern Brazil

Cited by 3 publications

References 2 publications

Observations on the population characteristics of<i> Apionsoma (Apionsoma) misakianum </i>(Sipuncula: Phascolosomatidae), a new species for the Mediterranean fauna

Observations on the population characteristics of<i> Apionsoma (Apionsoma) misakianum </i>(Sipuncula: Phascolosomatidae), a new species for the Mediterranean fauna

Observed mini‐cold pool off the southern tip of India and its intrusion into the south central Bay of Bengal during summer monsoon season

How Many Sipunculan Species Are Hiding in Our Oceans?

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