Pycnogonida |
Pantopoda |
Ammotheidae
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
; গভীরতার পরিসীমা 0 - 180 m (সূত্র 2153). Subtropical
Pacific and Arctic Oceans: Aleutian Islands, Bering Sea (Ref. 2153). Subtropical, Temperate.
Length at first maturity / আকৃতি / Weight / Age
পরিপক্কতা : Lm ? range ? - ? cm Max length : 1.0 cm LS পুরুষ/ লিঙ্গ অনিধর্ারিত ; (সূত্র 2153)
Tiny species, leg span slightly less than 1 cm. Trunk circular in outline, lateral processes contiguous, armed with 0 to 3 short setae. Ocular tubercle very low, not as tall as its diameter, eyes well pigmented. Proboscis typical. Abdomen extending only to distal tip of first coxae, fourth leg pair. Chelifores short, with short distal setae, chelae stubs oval.
Palps 8 segmented, short. Ovigers typical. Legs moderately slender with few setae, propodus slender with 3 primary heel spines and 2 lateral smaller spines, sole with 6 to 7 short small spines. Auxiliaries about 0.7 as long as main claw (Ref. 2153, p. 2).
Larvae found to develop on the hydromedusa Polyorchis karafutoensis (Ref. 121217).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | Eggs | ডিম্বধারন ক্ষমতা | 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. (সূত্র 2153)
IUCN Red List Status
(সূত্র 130435: Version 2025-1)
CITES status (সূত্র 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
হাতিয়ার
আরো তথ্য
ট্রফিক বাস্তুতন্ত্র Food items (preys)
পথ্য উপাদান
খাদ্য গ্রহণ
শিকারী প্রাণী সমূহ
Population dynamicsবৃদ্ধি
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
প্রাচুর্য
Life cycleপ্রজনন পরিপক্কতা ডিম্বধারন ক্ষমতা ডিম ছাড়া EggsEgg developmentLarvae Physiologyঅম্লজান ব্যবহার
Human RelatedStamps, coins, misc.
ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature
(Ref.
115969): 4.6 - 15.8, mean 8.9 (based on 616 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
