Echinolittorina ziczac, previously known as Littorina ziczac, common name the "zebra periwinkle", is a species of small sea snail, a marine gastropod mollusc in the family Littorinidae. This species lives in the tropical Western Atlantic Ocean, from Florida to Barbados, including the Caribbean coast of Central America. It is very common on intertidal rocks.Malacolog database entry at
No narrative description available for this taxon yet.
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Echinolittorina ziczac has left across the world's sequence archives.
At a glance
DNA specimens37
BINs1
Marker genes3
eDNA detections34
Countries2
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P658 bp consensus4 specimens
ACGT
▸ drag or hover over the strip to read any position — letter and how much it varies
Violet ticks below the strip = positions where individuals differ; flat = the species' unchanging signature. 89% of positions are identical in every specimen.
Diversity (π)7.0%
Haplotypes2
BIN1
Most divergent pair0.61%
Where individuals differ — all 70 variable positions, in barcode order
The species whose COI barcode is most similar to this one — a quick “who is this most like”. The percentage is how much the barcode differs; it approximates, but is not, the full evolutionary tree.
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★COI-5P18S-5PCYTB
animal barcoderibosomalmitochondrial
07Deep time~13 Ma lineage
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
DNA clock origin13 Ma TimeTree
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
DNA clock origin
How it livedPBDB
Life habitepifaunal
Dietgrazer
Motilityactively mobile
Visionlimited
Compositionaragonite
08Occurrence & distribution
Record type2 368 records
Wild obs. + sensor885
Museum / vouchered1 479
Cultivated / captive4
Range
Area of Occupancy AOO3 632 km²
Depth
0–200 m sunlit36
200–1000 m twilight1
1–4 km midnight0
>4 km abyssal0
median 0.6 m · max 228.5 m · 37 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy85% within 1 km
≤100 m 233≤1 km 48≤10 km 22>10 km 26
329 georeferenced · 556 without coordinates
Open the mapobservation + sensor885
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy33% within 1 km
≤100 m 5≤1 km 46≤10 km 51>10 km 54
156 georeferenced · 1 323 without coordinates
Open the institutions mapphysical evidence1 479
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Coordinate accuracy
no georeferenced coordinates · 4 records without
Open the mapnot free-living4
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions15 of 37 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Philadelphia, US
236
Museu Nacional/Universidade Federal do Rio de Janeirolocation not on record
68
Santa Barbara Museum of Natural Historylocation not on record
45
Chongqing Museumlocation not on record
44
Delaware Museum of Nature and Sciencelocation not on record
41
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
21
Chicago, US
16
Los Angeles, US
15
Natural History Museum Rotterdamlocation not on record
15
Cambridge, US
11
Brussels, BE
10
Florida Atlantic University, Harbor Branch Oceanographic Museumlocation not on record
9
Universidad El Bosque (El Bosque)location not on record
9
Champaign, US
8
RBINS-Scientific Heritagelocation not on record
8
Paleontological Research Institutionlocation not on record
8
North Carolina Museum of Natural Scienceslocation not on record
7
SNSDlocation not on record
7
Washington, US
7
National Biodiversity Institute, Costa Ricalocation not on record
4
Denver, US
4
Ann Arbor, US
4
Universidad Simón Bolívarlocation not on record
3
Instituto de Investigaciones Marinas y Costeras (INVEMAR)location not on record
3
UM-RSMASlocation not on record
2
Unidad Multidisciplinaria de Docencia e Investigación, Campus Sisal, Facultad de Ciencias, Universidad Nacional Autónoma de Méxicolocation not on record
2
Universidad del Valle de Guatemalalocation not on record
2
Naturalis Biodiversity Centerlocation not on record
2
Sistema de Colecciones Biológicas, Escuela de Biología, Universidad de San Carlos de Guatemala location not on record
2
Masindi, UG
1
Mexico City, MX
1
Auckland, NZ
1
LUZlocation not on record
1
Museu Nacional de História Natural e da Ciêncialocation not on record
1
Salzburg, AT
1
Toronto, CA
1
Tromsø, NO
1
37 institutions · 621 of 1 479 vouchered records shown · 53 without an institution code
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
09Environmental DNA34 detections
Where the DNA of Echinolittorina ziczac was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found34
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 34 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median25.3 °C 25.3–25.3
Seasonal swing summer↔winter3.10 °C
Max temp (day)25.8 °C
Min temp (night)24.5 °C
Precipitation107 mm/mo
Air humidity68.1 %
Moisture balance-39.9 mm/mo
Vapour deficit1,026 Pa
Wind speed1.20 m/s
Cloud cover47.7 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
WikipediaWikimedia Foundation4 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 280 records↗
OBISOcean Biodiversity Information System1 088 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI34 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics37 specimens↗
Open Tree of LifeOpenTreephylogeny backbone↗
Paleobiology DatabasePBDB consortiumfossil record↗
Catalogue of LifeCOLtaxonomy↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗