-
-
PRESERVED_SPECIMEN; Preparations:Dry; Apatopygus recens (Milne Edwards, 1836); Individual count:3; Type status: (no data); Identified by:Chesher, R. H.; Event date:19650219T00:00:00Z; Additional description:Dorsal view, dry specimen, spineless
-
PRESERVED_SPECIMEN; Preparations:Alcohol (Ethanol); Plexechinus nordenskioldi Mortensen, 1905; Individual count:7; Type status: (no data); Identified by:David, B.; Event date:19890118T00:00:00Z; Additional description:Wet specimen.
-
PRESERVED_SPECIMEN; Preparations:Dry; Echinometra picta A.Agassiz & H.L.Clark, 1907; Individual count:1; Type status:SYNTYPE; Identified by:Agassiz, Alexander E.; Clark, Hubert L.; Event date:19020712T00:00:00Z; Additional description:dorsal
-
PRESERVED_SPECIMEN; Preparations:Dry; Abatus elongatus (Koehler, 1908); Individual count:2; Type status: (no data); Identified by:Chesher, R. H.; Event date:19660209T00:00:00Z; Additional description:Dorsal view, dry specimen
-
Echinus spec.
-
-
Spatangus carinatus
-
PRESERVED_SPECIMEN; Preparations:Dry; Urechinus mortenseni David & Mooi, 1990; Individual count:25; Type status:PARATYPE; Identified by:David; Mooi; Event date:19621231T00:00:00Z; Additional description:Urechinus mortenseni David & Mooi, 1990 (USNM E11016 #103) paratype, aboral view Scale : 2 cm
-
-
Oceanário de Lisboa
-
-
PRESERVED_SPECIMEN; Preparations:Dry; Lytechinus anamesus H.L.Clark, 1912; Individual count:2; Type status:SYNTYPE; Identified by:Clark, Hubert Lyman; Event date:18890228T00:00:00Z; Additional description:Dorsal
-
PRESERVED_SPECIMEN; Preparations:Dry; Acanthocidaris hastigera A.Agassiz & H.L.Clark, 1907; Individual count:1; Type status:SYNTYPE; Identified by:Agassiz, Alexander E.; Clark, Hubert L.; Event date:19020501T00:00:00Z; Additional description:Dorsal
-
PRESERVED_SPECIMEN; Preparations:Dry; Apatopygus recens (Milne Edwards, 1836); Individual count:3; Type status: (no data); Identified by:Chesher, R. H.; Event date:19650219T00:00:00Z; Additional description:Lateral view, dry specimen
-
PRESERVED_SPECIMEN; Preparations:Alcohol (Ethanol); Plexechinus nordenskioldi Mortensen, 1905; Individual count:7; Type status: (no data); Identified by:David, B.; Event date:19890118T00:00:00Z; Additional description:Wet specimen.
-
Summary[
edit] Description: English: Pencil urchin (Heterocentrotus mamillatus). Northwest Hawaiian Islands. Date: September 2004. Source:
NOAA Photo Library:
reef0764. Author: Dr. Dwayne Meadows, NOAA/NMFS/OPR.
-
Echinus spec.
-
-
Spatangus prunella
-
PRESERVED_SPECIMEN; Preparations:Dry; Urechinus mortenseni David & Mooi, 1990; Individual count:1; Type status:ALLOTYPE; Identified by:David; Mooi; Event date:19621231T00:00:00Z; Additional description:Urechinus mortenseni David & Mooi , 1990 (USNM E40040) allotype, aboral view Scale : 2 cm
-
Espinal J, Aldana M, Guerrero A, Wood C, Darszon A, Martinez-Mekler G
Wikimedia Commons
Delay time for the onset of the first Ca fluctuation of S. purpuratus spermatozoa is increased by the presence of Verapamil. Swimming Fluo4 loaded S. purpuratus sperms were expose to speract through the photorelease of caged speract (10 nM) with a 200 ms UV flash alone (left panel) or in the presence of Verapamil (10 M, right panel). An optic fiber of 4000 m internal diameter was used as light path between the UV lamp and the microscope. 20 times slower: 120 frames s, Scale bar = 25 m, 40× objective. Yellow circles indicate spermatozoa at the beginning and progression of the first Ca fluctuation until reach the averaged delay time of the whole population is reached.
-
PRESERVED_SPECIMEN; Preparations:Dry; Lytechinus anamesus H.L.Clark, 1912; Individual count:1; Type status:SYNTYPE; Identified by:Clark, Hubert Lyman; Event date:18890126T00:00:00Z; Additional description:Ventral
-
PRESERVED_SPECIMEN; Preparations:Dry; Acanthocidaris hastigera A.Agassiz & H.L.Clark, 1907; Individual count:1; Type status:SYNTYPE; Identified by:Agassiz, Alexander E.; Clark, Hubert L.; Event date:19020501T00:00:00Z; Additional description:Lateral