''Celsinotum candango'' is a species of crustacean. Its epithet comes from the name applied to people that built the city of Brasilia and was subsequently used for its inhabitants. The species was found in Lagoa do Henrique, a freshwater pond in the

Brasília National Park The Brasília National Park () is a national park located in the northwest of the Federal District and in the center of the state of Goiás, in the Brazil. The park covers an area of , with territory distributed by the administrative regions of Bra ...

. Its body is high and rounded, with a low dorsal

keel The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in Br ...

. Its last 5–8 ventral

seta In biology, setae (singular seta ; from the Latin word for "bristle") are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Annelid setae are stiff bristles present on the body. Th ...

e ventral setae thick and spiniform, carrying 1–3 setules on their posterior margin. Its head shield and head pores are the same as its cogenerate species, as is its labrum,

antenna Antenna ( antennas or antennae) may refer to: Science and engineering * Antenna (radio), also known as an aerial, a transducer designed to transmit or receive electromagnetic (e.g., TV or radio) waves * Antennae Galaxies, the name of two collid ...

and antennule and thoracic limbs. ''Celsinotum candango'' other species of the genus in the proportions of its postabdomen, given the postanal portion is 1.2–1.3 times longer than the anal one in all other species. It differs from Australian species ('' C. hypsophilum, '' C. parooensis'' and C. platamoides'') by its less developed keel, the lateral head pores which are located close to midline, a longer spine on the basal segment of the antenna exopodite, and by the presence of very big projections on the latter. The Brazilian '' C. Laticaudatum'' differs from ''C. candango'' by having a longer spine on the basal segment of the antenna exopodite, in the shape of its postabdomen, and in postabdominal denticles, which in this species are long and single.Sinev, Artem Y., and LOURDES MA Elmoor-Loureiro. "Three new species of chydorid cladocerans of subfamily Aloninae (Branchipoda: Anomopoda: Chydoridae) from Brazil." Zootaxa 2390 (2010): 1-25.

Description

This species description is based on a

parthenogenetic Parthenogenesis (; from the Greek grc, παρθένος, translit=parthénos, lit=virgin, label=none + grc, γένεσις, translit=génesis, lit=creation, label=none) is a natural form of asexual reproduction in which growth and development ...

female. Its body is rounded and high, compressed laterally. Its maximum height is at the middle of the body, its height/length ratio being 0.75–0.8 in adults. Its dorsal margin is arched, the posterior margin being somewhat convex. Its posterodorsal angle is broadly rounded, with approximately 25 long setules. It also counts with a row of about 50 to 70 long and thin setules along the posterior margin on the inner side of its

carapace A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...

. The carapace ornamentation is observed as lightly developed longitudinal lines. Its head is elongated and narrow, its rostrum is obliquely truncated. The ocellus is small, the eye being two times larger than the former. It possesses three major head pores of similar size with a narrow connection between them. The animal's

thorax The thorax or chest is a part of the anatomy of humans, mammals, and other tetrapod animals located between the neck and the abdomen. In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main divisions of the cre ...

is three times longer than its abdomen. The postabdomen narrows distally, the length of which is equal to about 2.5 heights. It counts with setae natatoriae about 2.1–2.3 the length of the preanal portion of its postabdomen. Its antennule is long and narrow, nearly reaching the tip of the rostrum; the antennular seta is thin, of about half the length of the antennule. It exhibits nine terminal aesthetascs, the two longest being about 2/3 the length of the antennule itself. All the aesthetascs project beyond the anterior margin of the head shield. Seta arising from the basal segment of its

endopodite The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments (called podomeres) are of Latin origin, and may be confused with terms for bones: ''coxa'' (meaning hip, plur ...

are thin and shorter than the endopodite itself. It counts with 5 thoracic limbs.

Distribution

At present, C. candango was only reported from the type locality: Lagoa do Henrique (Brasília National Park), which is a small (diameter about 200m) shallow freshwater pond, with macrophytes almost all over its area, surrounded by typical "Cerrado" vegetation (tropical savanna). The sample was taken at the beginning of the dry season being the depth at sampling site of about 20–40 cm. Waters were oligotrophic low mineralized, acidic (pH: 4,93–5,50) and relatively low oxygenated (OD: 3,63– 6,32 mg/L).

Description

Distribution

References

Further reading