Pycnogonida |
Pantopoda |
Pycnogonidae
Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
; गहराई सीमा 7 - 416 m (संदर्भ 2153). Subtropical
Northwest Pacific: Alaska and Japan.
Length at first maturity / आकार / Weight / Age
परिपक्व अवधि: Lm ? range ? - ? cm
Trunk and appendage integument lightly reticulated or sometimes unreticulated but granular. Trunk with slender dorsomedian tubercles, rounded or pointed. Lateral processes slightly longer than diameter, closely spaced but separated distally, with low dorsodistal bulges sometimes becoming a continuous dorsal ridge. Proboscis a long tapering truncate cone with flat oral surface. Abdomen fairly long, slender, tapering distally, extending beyond distal rim of first coxae, fourth legs. Oviger 9 segmented, of moderate size, terminal claw slightly curved. Legs with moderately slender major segments, with very few short spines. Propodus tapers distally to smaller diameter, sole with pile of short spines, claw robust, long, more than half length of propodus, auxiliary claws lacking (Ref. 2153, p. 16).
Shelf to upper slope (Ref. 19).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | Eggs | Fecundity | Larvae
Members of the class Pycnogonida are gonochoric and sexually dimorphic. During copulation, male usually suspends itself beneath the female. Fertilization occurs as the eggs leave the female's ovigers. Males brood the egg masses until they hatch. Life cycle: Eggs hatch into protonymphon larva then to adults.
Child, C.A. 1995 Pycnogonida of the Western Pacific Islands XI. Collections from the Aleutians and other Bering Sea islands, Alaska. Smithsonian Contributions to Zoology 569:1-33. (संदर्भ 2153)
IUCN Red List Status
(संदर्भ 130435: Version 2025-1)
CITES status (संदर्भ 108899)
Not Evaluated
CMS (संदर्भ 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
साधन
अधिक जानकारी
Trophic EcologyFood items (preys)
संघटक आहार
आहार खपत
परभक्षी
Population dynamicsबाढ़
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
Life cycleपुनरुत्पत्तिपरिपक्व अवधिFecundityमछलीऔ का अंडे देनाEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
इंटरनेट स्रोत
Estimates based on models
Preferred temperature
(Ref.
115969): 5.9 - 19.7, mean 15.3 (based on 91 cells).
Price category
Unknown.
