Pycnogonida |
Pantopoda |
Endeidae
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع
البيئة
قاعية التغذية و المعيشة; نطاق العمق 0 - 12 m (مرجع 256). Subtropical
Western Atlantic and the Mediterranean.
الطول عند النضج الأول / الحجم / وزن / العمر
النضج: Lm ? range ? - ? cm Max length : 0.3 cm BASL ذكر/ مختلط الجنس; (مرجع 276)
Length: Females, 0.4 cm; males smaller (Ref. 256); 3 mm body length; legs 15 mm long (Ref. 276). Body: Slender-cylindrical, with the lateral processes wide apart, each furnished with a dentiform projection at the tip. Cephalon: Frontal spines close together, the collar having sinus in the middle on the dorsal side. Chelifores and palps: absent. Abdomen: oblong-oval, truncate at the posterior end; armed with a short spine. Ocular tubercle: exactly in the middle of the cephalon, prominent, acuminate, the four eyes comparatively small, closer to the base of the tubercle. Proboscis: long and slender than the body, expanded in the middle. Ovigerous legs: male only, half the length of the body, with seven segments. Second segment: largest, the 5th segment larger than preceding or succeeding it, sharply curved; last segment triangular, with two short spines on the inner margin. Ambulatory legs: 3 times the length of the body, armed with scattered spines, unequal in length; 2nd coxal segment longer than taken together; femur twice as the coxal section and terminating outwards in a conical process, armed with two spines of different length. Tibia: 1 shorter. Tibia: as long as the femur. Tarsus: obliquely rounded. Propodus: four times longer than broad, terminating outwards in a sharp corner, inner margin furnished at the base with five spines, the two outmost placed side by side, terminal claw more than half the propodus. Auxiliary claws: less than half as the main claws. Body: translucent, with the intestine and its lateral expansions of a green color (Ref. 256). Proboscis: Detritus-gathering as a different source of food, lack chelifores, and capable of considerable movement at the region of the 'soft collar'; a number of bifid setae scattered on the surface and sometimes groups of tactile or chemosensory spines abundant around the mouths of this detritus-feeding forms. The mouth at the tip of the proboscis: triradiate structure; three lip-lobes and carry a number of setae (Ref. 12)
Feeding on hosts: Debris at the base of Antennularia sp. (Ref. 234). Coastal to slope (Ref. 19). Planktonic (Ref. 91956). Epibiotic (Ref. 116112). Larva develops attached to the hydranth of Obelia sp. (Ref. 121217). Chemically attracted to various hydroid species (Ref. 121217). Reported to be exclusively detritivorous (Ref. 121217).
دورة الحياة وسلوك التزاوج
النضج | التكاثر | وضع البيض | بيض | الخصوبة | اليرقات
Life cycle: release a number of eggs at each mating; represents the contents of a single femur (Ref. Ref. 12). Development site of larval associations: Obelia medusae and hydroids (Ref. 206).
de Kluijver, M.J. and S.S. Ingalsuo 2005 Pycnogonida: Microbenthos of the North Sea. Zoological Museum, University of Amsterdam.http://ip30.eti.uva.nl/bis/pycnogonida.php?menuentry=inleiding[accessed13/01/06]. (مرجع 256)
حالة القائمة الحمراء للاتحاد الدولي لحفظ الطبيعة والموارد الطبيعية
(مرجع 130435: Version 2025-2 (Global))
حالته حسب اتفاقية سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر للأنسان
استخدامات بشرية
FAO - Publication: search | FishSource |
أدوات
مزيد من المعلومات
الديناميكيات السكانيةنمو
الحد الأقصى للأعمار/الأحجام
علاقة الطول بالوزن.
علاقة الطول بالطول.
الطول- الترددات
التحويل الجماعي
الوفرة
دورة الحياةالتكاثرالنضجالخصوبةوضع البيضبيضتطور البيضةاليرقات علم وظائف الأعضاءاستهلاك الأوكسجين
ذات الصلة بالبشرطوابع بريدية وعملات معدنية ومتنوعة
مصادر علي الأنترنت
تقديرات تستند إلى النماذج
ضعف الصيد
(مرجع 71543) |
Low vulnerability (10 of 100). |
فئة السعر
(مرجع 80766): |
Unknown. |
