In: Biology
Tagged: , , , , , , , , , , , , ,

Gonpores are the openings of reproductive system to exterior. In male, pore on basal segment (coxa) of last (eighth) thoracopods; in female, pore on coxa of sixth thoracopods (third pereopods) [1] Coenobita rugosus has been found to be intersexual   We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy of a land hermit crab (Coenobita) References: 1 Stachowitsch, 1992Read More →

In: Biology
Tagged: , , , , , , , ,

The Cephalic shield [1] or carapace is part of the exoskeleton that covers the cephalothorax. It functions as a protective cover, hence the common name ‘shield‘. We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy of a land hermit crab (Coenobita) Photo credits: HUSO Chen Yu-Jung Stacy Griffith References: Dardanus megistos by Storm Martin 2012Read More →

In: Biology
Tagged: , , , , , , , , ,

Chela (organ) A chela /kˈiːlə/, also named claw, nipper or pincer, is a pincer-like organ terminating certain limbs of some arthropods.[1] The name comes from Greek (χηλή) through New Latin (chela). The plural form is chelae.[2] Legs bearing a chela are called chelipeds.[3] Another name is claw because most chelae are curved and have a sharp point like a claw. Also called pincer or pincher. We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy ofRead More →

In: Biology
Tagged: , , , , , , ,

Coenobita possess compound eyes comprised of faceted lenses which are especially adept at picking up fine movements. The eyes are located on movable stalks and this is one of the primary ways we determine the species of hermit crab we are looking at.     We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy of a land hermit crab (Coenobita) Photo Credits: The Crab Street Journal has been granted permission by these photographers to useRead More →

In: Biology
Tagged: , , , , , , , , ,

The gills of Coenobita and Birgus are modified for air-breathing but are reduced in number and size and have a comparatively small surface area. The branchiostegal lungs of Coenobita (which live in gastropod shells) are very small but are well vascularized and have a thin blood/gas barrier. Coenobita has developed a third respiratory organ, the abdominal lung, that is formed from highly vascularized patches of very thin and intensely-folded dorsal integument. Oxygenated blood from this respiratory surface is returned to the pericardial sinus via the gills (in parallel to the branchiostegal circulation). Birgus, which does not inhabit a gastropod shell, has developed a highly complexRead More →

In: Biology
Tagged: , , , , , , , , ,

The land hermit crab (Coenobita) develops a water sac inside of their shell prior to a molt. As shedding of the old exoskeleton begins, this store of water is used to expand the body to stretch and increase size before the soft exoskeleton begins to harden again We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy of a land hermit crab (Coenobita)Read More →

In: Biology
Tagged: , , , , , , , , , , , , ,

grav·id: ˈɡravid/ adjective 1. pregnant; carrying eggs or young. Land hermit crabs carry their brood inside of the shell until they are ready to be released into the ocean. We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Overview of the anatomy of a land hermit crab (Coenobita)Read More →

In: Biology
Tagged: , , , , , , , , , ,

The abdominal appendages of the land hermit crab include the thoracic appendages, pleopods, uropods and telson [1]. The thoracic appendages are used for cleaning the gills, gripping the shell, gripping a mate during copulation. The pleopods are used for brooding eggs. At the end of the pleon is the tail fan, comprising a pair of biramous uropods and the telson, which bears the anus. Together, they are used for steering while swimming, and in the caridoid escape reaction. We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contactRead More →

In: Biology
Tagged: , , , , , ,

Overview of the anatomy of a land hermit crab (Coenobita): We are building image galleries of specific body parts. If you have high resolution, clear photos that you would like to donate to this project please contact us via email: crabstreetjournal at gmail dot com Click to be taken to the gallery: Chelipeds or pincers Eyes Antenna (antennal flagellum, antennular flagellum, antennule) Mandibles and Maxipellid Gills and branchial chamber Abdomen, Uropods, Pleopods, Telson Water or molt sac Egg cluster Gonopores ShieldRead More →