English to Russian Science Biology (-tech,-chem,micro-) Biotechnology

Речь идет о нитях, которые паук производит для паутины, и их промышленном использовании. Но я не нашла точного названия. Вот несколько примеров.
Dragline silk is the strongest kind of silk because it must support the weight of the spider.
The toughest silk is the dragline silk from the Golden Orb-Weaving spider.
A single spider does not possess all seven glands but has at least three if it is male (dragline, attachment and swathing silk).
Ampullate glands (major and minor) produce non-sticky dragline silk. Silk from the minor ampullate gland is only half as strong as that from the major gland.
Tensile tests have been made on the draglines of the Queensland Bird-Catching Spider (Nephila maculata).
...that dragline consists of a pair of larger fibres (extruded from the major ampullate glands) and a pair of thinner fibres (from the minor ampullate glands).

Заранее благодарю за помощь!