?Ecuadorian hermit crab
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Order: Decapoda Family: Coenobitidae Genus: Coenobita Species: C. compressus
Binomial name
Coenobita compressus Herbst, 1791

The Ecuadorian hermit crab (Coenobita compressus) also known as the Pacific hermit crab is a species of land hermit crab commonly sold in the United States as a pet, along with the Caribbean hermit crab (Coenobita clypeatus). Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Subregnum Parazoa Porifera (sponges) Subregnum Agnotozoa Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Myxozoa (slime animals) Superphylum Deuterostomia (blastopore becomes anus) Chordata (vertebrates, etc. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders,scorpions, etc. ... Classes & Subclasses Branchiopoda Phyllopoda Sarsostraca Remipedia Cephalocarida Maxillopoda Thecostraca Tantulocarida Branchiura Pentastomida Mystacocarida Copepoda Ostracoda Myodocopa Podocopa Malacostraca Phyllocarida Hoplocarida Eumalacostraca The crustaceans (Crustacea) are a large group of arthropods (55,000 species), usually treated as a subphylum [1]. They include organisms such as lobsters, crabs, shrimp and barnacles. ... Subclasses Eumalacostraca Hoplocarida Phyllocarida See text for orders. ... Suborders and Infraorders Dendrobranchiata Pleocyemata Caridea Stenopodidea Reptantia, comprising: Eryonoidea Achelata Astacidea Glypheidea Thalassinidea Anomala Brachyura The decapods or Decapoda are a group of crustaceans within the class Malacostraca, including many familiar groups of crustaceans, such as crabs, lobsters and shrimp, but also some families that are less well known. ... Genera Birgus Coenobita Coenobitidae are a family of hermit crabs with only two genera: Birgus (Leach, 1816), the coconut crab, and Coenobita (Latreille, 1825), a genus of terrestrial hermit crabs centred in the Indian and Pacific Oceans, but also extending to the Atlantic Ocean and the Red Sea. ... Species C. clypeatus C. compressus C. perlatus C. variabilis The genus Coenobita contains the thirteen species of terrestrial hermit crabs. ... In biology, binomial nomenclature is the formal method of naming species. ... Johann Friedrich Wilhelm Herbst (1743 - 1807) was a German naturalist and entomologist. ... Hermit crabs are decapod crustaceans of the infra-order Paguroidea, distinct from the true crabs in the infra-order Brachyura. ... Binomial name Coenobita clypeatus Fabricius, 1787 The Caribbean hermit crab (Coenobita clypeatus), also known as the tree-climbing crab, the soldier crab, and the purple pincher, is a species of hermit crab commonly sold in the United States. ...

Features and Identification

Coenobita compressus is a member of the phylum Arthropoda and the class Malacostraca. They can be up to 12mm in length and are thought to be one the smallest species of land hermit crabs. They have four walking legs, a small pincer, a large pincer, and antennae. Many people who keep these crabs as pets notice that Ecuadorians can be relatively fast walkers, more so than the Caribbean hermit crab. The eyes of Ecuadorians are more oval-shaped when compared to the round eyes of Caribbean hermit crabs and are thicker. Their big claw has 4 or 5 small ridges on the upper part. The tips of the second pair of walking legs are darker than the rest of the leg. The abdomen of the Ecuadorian hermit crab is short and fat. Image File history File links Download high resolution version (1120x840, 183 KB) Summary Author: Mike Quigley Description: Coenobita Compressus (Ecuadorian Land Hermit Crab) Licensing I, the creator of this work, hereby release it into the public domain. ... Image File history File links Download high resolution version (1120x840, 183 KB) Summary Author: Mike Quigley Description: Coenobita Compressus (Ecuadorian Land Hermit Crab) Licensing I, the creator of this work, hereby release it into the public domain. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - Trilobites (extinct) Subphylum Chelicerata Arachnida - Spiders, Scorpions, etc. ... Subclasses Eumalacostraca Hoplocarida Phyllocarida See text for orders. ... Antennae (singular antenna), are the paired appendages connecting to the first (and in crustaceans also to the second) segment of the head of the members of all subphyla of the arthropods except Chelicerata. ... Binomial name Coenobita clypeatus Fabricius, 1787 The Caribbean hermit crab (Coenobita clypeatus), also known as the tree-climbing crab, the soldier crab, and the purple pincher, is a species of hermit crab commonly sold in the United States. ...

Ecuadorian hermit crabs vary greatly in color, some are bright (yellow, dark grey, or orange), but more often they are a tan color. Sometimes they may have a blue or green tint to their bodies or the insides of their legs. Yellow is any color of light that stimulates both the red and green cone cells of the retina, but not the blue cone cells. ... Grey or gray (see spelling differences) is a colour seen commonly in nature. ... See also Orange (disambiguation) for other meanings of the word. ... Tan is a brownish, tawny coluor. ...

When choosing a shell they tend to give preference to nerite, deshayes, babylonia, valencienne and other shells with a wider mouth.

Habitats

Native to Ecuador and Chile, these hermit crabs live on the Pacific seashore around the tidal pools and high-tide zone. Their bodies have adapted to this seashore existence and are able to metabolize the salt in seawater. In fact, they have adapted so well to their environment that they actually need seawater to live. View of the Pacific Ocean from Oregon. ... Santorio Santorio (1561-1636) in his steelyard balance, from Ars de statica medecina, first published 1614 Metabolism (from μεταβολισμος(metavallo), the Greek word for change), in the most general sense, is the ingestion and breakdown of complex compounds, coupled... A magnified crystal of a salt (halite/sodium chloride) In chemistry, a salt is any ionic compound composed of positively charged cations and negatively charged anions so that the product is neutral and without a net charge. ...

Like most hermit crabs they are scavengers and will consume seaweed, dead fish and other detritus that washes up on the shore. Harvestman eating the tail of a five-lined skink The word scavenger, in zoology, refers to animals that consume already dead organic life-forms. ... Seaweed-covered rocks in the UK Biologists, specifically marine biologists, consider seaweed to be any of a large number of marine benthic algae that are multicellular, macrothallic, and thus differentiated from most algae that tend to be microscopic in size [1]. Many phycologists prefer the term marine macroalgae over seaweeds... The Guppy (Poecilia reticulata) is one of the most popular freshwater aquarium fish species in the world. ... Detritus may refer to: In geology, detritus is the name for loose fragments of rock that have been worn away by erosion. ...

Studies

A study [1] with Coenobita compressus conducted by the department of biology at the University of Michigan showed that land hermit crabs prefer the odours of foods that they have not recently eaten. The crabs that were exposed to one food for at least 9 hours preferred foods having other odours for the next 6 hours. It is this short-term avoidance of food (like human beings who get "bored" of the same meals over and over again) that compels the crabs to seek out a wider range of food might be advantageous to the crab, possibly through the consumption of a more nutritionally balanced diet. UM also has campuses in Dearborn and Flint. ...