tracheole

(trā′kē-ōl′)

One of the very small, branching tubes at the tips of the tracheae of an arthropod. Oxygen and carbon dioxide diffuse through the walls of the tracheoles.

tra·che′o·lar (-ə-lər) adj.

tracheole

the small branching tubes from the TRACHEAE (2) of insects.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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References in periodicals archive

Numerous tracheoles were also associated with the ovary in this species (see Figures 2B, C).

Comparative study of the ovarian morphology in the order Polydesmida (Diplopoda) and description of unusual structures in the female reproductive system/Estudo comparativo da morfologia ovariana na ordem Polydesmida (Diplopoda) e descricao de estruturas incomuns do sistema reprodutor feminino

Internally, tracheae branch repeatedly until microscopic divisions (tracheoles) of the system make contact with metabolically active tissues.

The Madagascar hissing cockroach: a new model for learning insect anatomy

The degree of coiling of ovarian tracheoles was then observed to determine if the female is parous or nulliparous.

Population dynamics of indoor sampled mosquitoes and their implication in disease transmission in Abeokuta, south-western Nigeria

In myriapods and insects, oxygen diffuses through the spiracles and along the tracheae and tracheoles to the metabolically active tissues.

2 Life in hot deserts and subdeserts

(A) Female reproductive system of Scyphophorus acupunctatus formed by 2 ovaries (ov), germarium (g), vitellarium (v), oocyte (o), lateral oviduct (lo), common oviduct (co), spermatheca (s), and genital chamber (gc); (B) Distal part of the germarium (g) with bulky appearance possibly with trophocytes, prefollicular cells, and oogonia, terminal filament (tf), trachea (tr), tracheoles (trl); and (C) Approach to the onset of vitellarium with oocytes in development, germinal vesicle (gv), interfollicular tissue (tif), trachea (tr), and tracheoles (trl).

Food quality influences ovarian development in Scyphophorus acupunctatus (Coleoptera: Dryophthoridae)