Starfish by the starfish in an escape response. The loss of parts of the body is achieved by the rapid softening of a special type of connective tissue in response to nervous signals. This type of tissue is called catch connective tissue and is found in most echinoderms. An autotomy-promoting factor has been identified which, when injected into another starfish, causes rapid shedding of arms. The lifespan of a starfish varies considerably between species, generally being longer in larger forms and in those with planktonic larvae. For example, "Leptasterias hexactis" broods a small number of large-yolked eggs. It has an adult
Jaliscan spiny pocket mouse Jaliscan spiny pocket mouse The Jaliscan spiny pocket mouse ("Heteromys spectabilis") is a species of heteromyid rodent endemic to Mexico. The specific name "spectabilis" means "striking", and refers to the animal's relatively bright coloration. It was formerly placed in the genus "Liomys", which is now recognized to be paraphyletic and has been subsumed into "Heteromys". The Jaliscan spiny pocket mouse is a relatively large member of its genus, measuring in head-body length, with a tail about the same length again. Adult males weigh about on average, while females are significantly smaller, weighing on average. The fur is reddish brown over