Pycnogonida |
Pantopoda |
Nymphonidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
. Tropical
Western Central Pacific: Philippines.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ? range ? - ? cm Max length : 0.9 cm LS con đực/không giới tính; (Tài liệu tham khảo 6)
Small; leg span 0.88 cm. Trunk: compact, fully segmented. Lateral processes: only as long as their diameter, separated by half their diameters, glabrous. Neck: short, only as long as width of oviger tubercles. Crop: Anterior to neck wider than trunk, with setae over insertion of chelifore. Ocular tubercle: Slender, slightly less than twice as tall as wide, with two lateral short slender tubercles at apex. Eyes large, filling most of ocular tubercle, darkly pigmented. Abdomen: Short, little longer than ocular tubercle, armed with two distal setae. All anterior appendages: large. Proboscis: massive, inflated at midlength, tapering distally to rounded lips.
Chelifores: very large, scapes robust, straight, armed with dorsal and lateral setae as long as or longer than segment diameter. Chelae: huge, palm globular, greatly inflated, armed with many short setae. Fingers: shorter than palm, set obliquely to palm, very slightly curved with tips not overlapping, without setae, both with closely set bicuspid teeth, anterior cusps longer than posterior points, with 10 or 11 teeth on movable finger, 13 on immovable finger. Palps: trunk, second segment longest, third only 0.6 length of second, terminal segment 0.6 length of third, and fourth slightly shorter than terminal segment. Second segment armed distally with fringe of short setae, fourth with ventrodistal fringe, and terminal two segments with dense ventral and lateral setae, some longer than twice segment diameter. Oviger: segment five the longest segment, slightly inflated distally, without an apophysis, armed ectally and laterally with many setae longer than segment diameter. Segment six slight longer than four, six and strigilis armed with lateral and ectal setae similar to fifth segment. Strigilis: segments small, subequal in length, armed with endal denticulate spines in the formula 10:9:9:10, with a terminal claw almost as long as last segment, very slightly curved, armed with tiny proximal fringe or lamina, without teeth. Legs: slender, second tibia longest major segment, femur slightly longer than first tibia, armed with few long dorsodistal setae and short setae increasing in number distally on leg. Femur: inflated over proximal half, thin-walled. Tarsus: very short, armed with one ventral spine and few dorsal and ventral setae. Propodus; Short, slightly curved, without marked heel, armed with six large heel spines in two rows and six or seven smaller sole spines with flanking rows of short setae. Setae: distally, some longer than propodal diameter. Claw: less than half propodal length, auxiliaries 0.75 as long as main claw, all three with endal proximal row of tiny spinules (Ref. 6).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | 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. 1988 Pycnogonida of the Western Pacific Islands, III: Recent Smithsonian-Philippine Expeditions. Smithsonian Contribution to Zoology No. 468. Smithsonian Instition Press. Washington, DC. 32 p. + Figure 1 -3. (Tài liệu tham khảo 6)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
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Population dynamicsSự sinh trưởng
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Sự phong phú
Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Fishing Vulnerability
Low vulnerability (10 of 100).
Price category
Unknown.
