In: Caresheets, Crabitat

Land hermit crabs breathe through a modified gill. It is important to protect the gills from strong fragrances, essential oils, candles, household cleaners, chemicals, smoke insecticides and other airborne irritants. Be mindful of what you spray or use near the crabitat even if your tank is fully sealed. Residual product may still be in the air when you open your tank. If you are forced to have your home sprayed for insects ensure your tank is fully sealed with saran wrap or something similar. Allow the house to air out at least 24 hours before unsealing your tank.Read More →

In: Biology

Fig. 1. (A) Morphology of the branchiostegite and anterior appendages of Birgus latro, lateral view with legs omitted. (B) Lateral view of the branchial chamber of Birgus latro with the branchiostegite on the right-hand side reflected upwards to expose the inner surface of the branchiostegite. Note the distinction between the anterior hairlined portion of the branchiostegite and the posterior respiratory portion. The nephropore (antennal gland opening) faces posteriorly and opens directly into the branchial chamber. (Drawing made from a 500 g animal, approximately 20 cm in length excluding appendages, as shown.) Collapse Published in 1991Adaptations to a Terrestrial Existence by the Robber Crab Birgus Latro: VII.Read More →

In: Biology

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 →