Leptocephalus is a word that describes a type of eel larva. The pronunciation of this word is lep-toh-sef-uh-luhs. The first syllable is "lep", which is pronounced with a short "e" sound. The second syllable is "toh", which is pronounced with a long "o" sound. The third syllable is "sef", which is pronounced with a short "e" sound. The fourth syllable is "uh", which is pronounced with a schwa sound. The final syllable is "luhs", which is pronounced with a short "u" sound. Phonetic transcription helps to clarify the correct spelling of complex words like leptocephalus.
Leptocephalus refers to a unique and distinctive larval form of certain marine animals, primarily eels and other related fish species. The term originates from the Greek words "leptos," meaning thin or delicate, and "cephalus," meaning head.
Leptocephali are thin, transparent, ribbon-like larvae that possess an elongated body shape with a narrow head. They typically lack distinct features such as fully developed eyes, fins, or scales. Leptocephali are primarily found in the early developmental stages of eels, where they undergo an extraordinary metamorphosis. During this process, they transform into the more recognizable shape of the adult eel, acquiring pigmented skin, well-formed fins, and fully developed eyes.
The distinct morphology of leptocephali allows them to inhabit different oceanic zones and undertake long-distance migrations. They are frequently found in the open ocean, where they drift with ocean currents. This unique form is believed to contribute to their efficient oxygen uptake and provide ecological advantages during their pelagic existence.
Due to their fragile and delicate nature, leptocephali are highly vulnerable to predation and environmental conditions. As a result, their survival depends on various ecological factors, including proper food availability and suitable habitats. Scientists study leptocephali to gain insights into the reproductive strategies, behavior, and life cycles of marine organisms, particularly eels and related fish species.
A monster with very small head.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "leptocephalus" has its roots in Ancient Greek. It derives from two Greek words: "leptos" meaning "thin" or "slender", and "kephalē" meaning "head". Therefore, "leptocephalus" can be roughly translated as "thin-headed".
In biology, "leptocephalus" is often used to refer to the flat and transparent larval form of certain eel-like fishes, such as the anguillid eels and tarpon. The term was originally coined by French naturalist Georges Cuvier in the early 19th century to describe these larval fish with elongated bodies and narrow heads.