Invasive SpeciesAsian shore crab

Hemigrapsus sanguineus
FOUND by p7
2018-06-04
Dover
ID Confirmed
Quality checked by Yes.
Peer reviewed by
Field Notes
At Hilton Park it was sunny, warm, and windy. The tide was going out - low tide. But, there were small tide pools and the seaweed/rocks were still damp.
Supporting Evidence
Photo of my evidence.
We found the Asian Shore Crab by identifying the darker rings on its legs and square shell. Also, we looked for the Asian Shore crabs three spines on the outside of each eye.
Photo of my evidence.
This Asian Shore Crab was a male because of the Capitol Shaped marking on his stomach, also, this was not a sponge crab.
Photo of my evidence.
We found this baby Asian Shore Crab, which is proof that they are currently reproducing.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Hemigrapsus sanguineus
Common name:
Asian shore crab
Is it alive?: 
All alive
Count of individuals: 
1-10
Coverage: 
Between 1/4 and 1/2
Reproduction: 
Eggs (animals)
How big is it?: 
5 - 10 cm
Is it male or female?: 
Male
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.119227 °
Longitude: 
W -70.828871 °
Observation Site Information
A photo of our study site.
Habitat: 
Coastal - Rocky intertidal
Trip Information
Name:
Hilton Park 2018
Trip date: 
Mon, 2018-06-04 09:33
Town or city: 
Dover
Type of investigation: 
Species and Habitat Survey
Ecosystem: 
Coastal
Watershed: 
Little Bay
Time of low tide: 
Mon, 2018-06-04 09:50
Habitat Observations
Species diversity: 
9 different species
Evidence of vectors: 
Boat ramp
Boats
Paved road
People
Recent disturbance
bridge
Water temperature: 
21.0°C
pH: 
6.4
Dissolved oxygen: 
14.6mg/L
Salinity: 
28.0ppt

Comments

Once again, well done on the id. You had clear pictures and state the evidence for your determination (carapace shape, spines, banded legs.) Great work!