Correct spelling for the English word "cephalula" is [sɛfˈaljʊlə], [sɛfˈaljʊlə], [s_ɛ_f_ˈa_l_j_ʊ_l_ə] (IPA phonetic alphabet).
Cephalula refers to a term used in biology to describe a particular stage or structure in the development of certain organisms, predominantly marine invertebrates. Specifically, cephalula refers to the larval stage found in some species of bryozoans.
The cephalula stage represents an intermediate step between the initial stages of larval development and the final adult form. Bryozoans are commonly referred to as moss animals due to their colonial growth habit, and the cephalula stage is a notable characteristic in their life cycle.
The cephalula is typically characterized by the presence of an elongated body, with a segmented structure bearing numerous tentacles or cilia. These tentacles serve as feeding structures that aid in capturing small particles or organisms for nourishment.
During the cephalula stage, bryozoans often settle on a substrate or other suitable surface, where they begin to undergo further development into their mature form. This may involve growth and differentiation into specialized structures that fulfill various functions, such as reproduction or defense.
The cephalula stage is of significant interest to researchers studying bryozoans as it represents a critical period in their life cycle, during which important physiological changes occur. Understanding the development and behavior of cephalulae can shed light on the overall life history and ecological role of bryozoans as well as broader concepts in developmental biology.