While the upper bathyal SWIOR species are unique and represent a regionally endemic cladorhizid fauna, similarities in morphology and spicule characters as well as molecular evidence suggests biogeographical affinities to species from the SW Pacific and SW Atlantic, but no similarities to previously reported Antarctic fauna were found. Large sigmas are common in filaments, while small sigmas are confined to the swellings and were not found in specimen USNM 1424083.1. Sci., 10 July 2019 However, carnivorous harp sponges snare their prey—tiny crustaceans—with barbed hooks that cover the sponge’s branching limbs. The harp sponge (Chondrocladia lyra) is the first species of carnivorous sponge identified by marine researchers, about 20 years ago. Subtylostyles, straight, fusiform, filaments, 740–1156 (858) μm long, and 12.6–22.0 (17.2) μm wide (3. Palmate chelae/cleistochelae, palmate forms more common, with frontal tooth and lateral alae of equal length, around 40% of total length, and strongly curved shaft 67.9–91.7 (81.8) μm (12.

The stem is bare, with little to no soft tissue. Cladorhizids are typically considered deep-sea sponges, are frequently found at oceanic ridges and seamount systems, and new species are continuously discovered as new areas are explored.In this study we describe nine new cladorhizid sponges collected on three seamounts of the Southwest Indian Ocean Ridge (SWIOR) during the RRS “James Cook” cruise JC066: Our results show that the cladorhizid fauna of the Southwestern Indian Ocean is diverse and seems to be bathymetrically structured with no observed overlap between the newly reported upper bathyal species (~1000 m) and previously described lower bathyal and abyssal species from the area. Associated with terminal swellings.USNM 1424083: COI, MK922988; 28S rRNA, MK935693; ALG11, MK922994. Megascleres are fusiform tylostyles with the broadest part close to the tip, 865–1443 μm, two size categories of straight non-fusiform tylostyles 549–1356 and 154–457 μm long. Microscleres are cleistochelae, 38.2–87.5 μm, and sigmancistras, 7.6–10.0 μm.The skeleton is composed of a solid core of tightly packed, large longitudinal subtylostyles. Megascleres are mycalostyles and commonly shorter (tylo)styles. Maldonado M(1), López-Acosta M, Sitjà C, Aguilar R, García S, Vacelet J. In the meantime, to ensure continued support, we are displaying the site without styles Palmate chelae/cleistochelae, palmate forms more common, with slightly curved shaft and alae size slightly less than one-third of total chela size, 26.4–42.4 (36.1) μm (COI, MK922985; 28S rRNA, MK935689; ALG11, MK922990.This species is only known from its type locality on a trench wall off the Mariana Islands at the (5813 m) on mixed sandy and rocky substrate situated on a small rock.This species is named after its collection locality on a vertical wall of the Mariana Trench off the Mariana Islands.The long stem and umbrella-shaped morphology of this species is unusual for the genus: The only other Morphologically, it is more reminiscent of a group of deep-sea Stalked sponge with a disc-shaped body and filaments radiating in a single plane from the disc margin. A further similarity with the feeding strat egy of carnivorous sponges is that both in t he case ... J. Upper stem widens in a conical fashion close to the body. & Duport, É. The results recovered carnivorous sponges as a clade closely related to the families Mycalidae and Guitarridae, showing family Cladorhizidae to be monophyletic and also including carnivorous species currently placed in other families. By continuing you agree to the Copyright © 2020 Elsevier B.V. or its licensors or contributors. The umbrella is made up of radiating bundles of mycalostyles creating the skeleton of the filaments with soft tissue in between. The filaments are composed of mycalostyles perpendicularly inserted into the main stem, radiating at their base. Parts of the system include the Mariana Trench, the Mariana Arc, and the Mariana Trough, a complex and geologically active area including seafloor at various depths and substrates, vent systems, and the volcanic islands of the Mariana Islands themselves (Here, we describe carnivorous sponges collected during the first and third legs of the 2016 Deepwater Exploration of the Marianas (EX1605), a sampling effort in the area around the U.S. territories of Guam and the Commonwealth of the Northern Mariana Islands with the National Oceanic and Atmospheric Administration (NOAA) ship While the sampling effort of the EX1605 cruise was conducted throughout the deep-sea areas on both sides of the Mariana Islands, most of the cladorhizid samples were recovered from the Mariana Trench part of the system on the eastern side of the islands during the third leg of the cruise (Most specimens were preserved in 96% ethanol only, or as several subsamples with different fixation media. The color of the sponge is translucent white to slightly gray in both live specimen and in ethanol.The main structural skeleton consists of a core axis made up of longitudinal, tightly arranged mycalostyles. Palmate isochelae, with frontal tooth and lateral alae of equal length, around 40% of total length, 20.4–39.7 (31.1) μm (While there were several possible observations of the species on the video feed, this species was only collected from the type locality off the Mariana Islands on the Stegosaurus Ridge (3090 m) from hard/rocky substrate situated on a small rock.This sponge is named after the collection locality on the Stegosaurus Ridge off the Northern Mariana Islands.This species shares similarities with other disc-shaped Stalked, hispid sponge with a cup-shaped body and horizontal, radial, slightly apically oriented filament crown close to the top margin.

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