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Aphrocallistes vastus Trinity transcriptome
2014-02-11
Sponges (Porifera) are among the earliest evolving metazoans. Their filter-feeding body plan based on choanocyte chambers organized into a complex aquiferous system is so unique among metazoans that it either reflects an early divergence from other animals prior to the evolution of features such...
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Building a Glass Sponge Reef
2019-02-10
Keenan Guillas, Amanda Kahn, Nathan Grant, Stephanie Archer, Anya Dunham, Sally Leys
ABSTRACT Glass sponge reefs are endemic to the continental shelf waters of British Columbia and Alaska where they form complex three-dimensional habitats used by a variety of commercially important fish and invertebrate species. The Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs...
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Cost of filtration DATA for 5 demosponges - Data associated with: Ludeman, Reidenbach and Leys - JEB 2017 The energetic cost of filtration by demosponges and their behavioural response to ambient currents
Download2017-02-14
Abstract: Sponges (Porifera) are abundant in most marine and freshwater ecosystems and as suspension feeders they play a crucial role in filtering the water column. Their active pumping enables them to filter up to 900 times their body volume of water per hour, recycling nutrients and coupling a...
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Data associated with Aragones and Leys - "The sponge pump as a morphological character in the fossil record"
Download2021-08-13
The timing of early animal evolution remains one of the biggest conundrums in biology. Molecular data suggest Porifera diverged from the metazoan lineage some 800 Ma to 650 Ma, which contrasts with the earliest widely accepted fossils of sponges at 535 Ma. However, the lack of criteria by which...
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Data associated with Grant et al (MEPS) "The Effect of Suspended Sediments on the Pumping Rates of Three Species of Glass Sponge In situ "
Data associated with Grant et al (MEPS) "The Effect of Suspended Sediments on the Pumping Rates of Three Species of Glass Sponge In situ "
Download2019-03-25
The largest known glass sponge reefs in Canada are within the Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs Marine Protected Area (HSQCS-MPA). However, human activities outside the core MPA boundaries, such as trawling, can create plumes of suspended sediments capable of travelling...
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Data associated with Grant et al (MER) "Suspended sediment causes feeding current arrests in the glass sponge Aphrocallistes vastus"
Data associated with Grant et al (MER) "Suspended sediment causes feeding current arrests in the glass sponge Aphrocallistes vastus"
Download2018-02-09
Bottom-contact trawling generates large, moving clouds of suspended sediments that can alter the behaviour of organisms adjacent to trawl paths. While increased suspended sediment concentrations (SSCs) are known to cause glass sponges to arrest filtration in lab studies, the response of sponges...
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Data associated with Matveev et al: Sense Induced Flow - Active use of ambient flow by a deep-sea glass sponge
Download2021-08-10
Matveev, E, Leys SP, Yahel G, Kahn AS, Aragones P, Ludeman D, Eerkes-Medrano D
How flow moves through porous structures like sponges is a fluid dynamic problem that has challenged physical and biological scientists. Sponges possess biological pump cells that are known to drive water flow, and yet their porous bodies have often been proposed to take advantage of ambient...
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Data from Kahn et al. (Trophic ecology of glass sponge reefs in the Strait of Georgia, British Columbia)
Data from Kahn et al. (Trophic ecology of glass sponge reefs in the Strait of Georgia, British Columbia)
Download2017
Chu, Jackson WF, Kahn, Amanda S, Leys, Sally P
Sponges link the microbial loop with benthic communities by feeding on bacteria. Glass sponge reefs on the continental shelf of western Canada have extremely high grazing rates, consuming seven times more particulate carbon than can be supplied by vertical flux alone. Unlike many sponges, the...
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Data from: Behaviors of sessile benthic animals in the abyssal northeast Pacific Ocean
2020-01-07
Kahn, Amanda S., Pennelly, Clark W., McGill, Paul R., Leys, Sally P.
Time-lapse photography provides a view of the seafloor at timescales that make it possible to recognize behaviors and activity of often slow-moving abyssal fauna. Most behavioral studies have focused on mobile animals; sessile benthic fauna have largely been overlooked. We combed through 30 years...