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Hemicalanus mucronatus (Claus, 1863)
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Hierarchy:
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Male: Prosome tapered anteriorly and produced into a spine. Antennule reaches up to the caudal furca. Mandibular blade with two strong teeth. Anterior tooth with two small spines. Endopod of maxillule one segmented bears 3 setae. Maxilla with 1 long spine on the 5th lobe. Spermathecae are widely separated. Coxa with a small inner seta, basis with 1 long seta; endopod 1 and 2 with 1 inner seta each, endopod 3 with 6 setae; exopod 1 with 1 outer marginal spine, segment 2 with an outer marginal spine and a smaller inner spine and one glandular pore, segment 3 with 3 inner setae, 1 outer marginal spine, 1 glandular pore and 2 terminal spines, one 4 times longer than the other. Female: Coxa of left 5th leg with a spinous projection on both sides and the basis with a long seta, setations of the endopod segment of both sides are same, segment 1 without setae, segment 2 and 3 having 1 and 6 setae respectively; exopod segment 1 of left leg with 1 marginal spine, 2 with 1 glandular pore and 1 marginal spine, segment 3 with 2 glandular pores and 1 marginal spine, two terminal spines, one having twice the length of the other; exopod 1 of right leg with I marginal spine, exopod 2 with one middle spine and 1 glandular pore, segment 3 with 1 long proximal spine, 2 terminal spines one slightly longer than other and one glandular pore.
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 Size:
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Prosome length:
Total length:
Male; 2.2 mm (K. Saraladevi, 1977) - 2.2 mm (K. Saraladevi, 1977)
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Distribution:
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Recorded from the Indian Ocean, Off the Arabian Sea at the mouth of Gulf of Oman, in the Gulf of Aden and off the southern and central west coast of India.
Depth distribution: Mesopelagic and bathypelagic
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Ecology:
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Salinity :32.74-37.36%o, Temperature : 12.53-30.37°C
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Genetics:
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References, Citations, Links to Literature:
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Modification History:
History Link
This information was compiled and submitted by R. Stephen. | This information was compiled and submitted by R. Stephen.
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 | Haloptilus mucronatus (after Saraladevi, 1977) a. female dorsal view, b. male forehead, c. urosome female (ventral), d. fifth leg (female), e. mandibular blade, f. maxillule, g. maxilla, h. fifth leg (male).
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Distribution Map
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Specimen Data Map from OBIS
The data are from the following sources: Southampton Oceanography Center Discovery Collections Midwater Database IndOBIS, Indian Ocean Node of OBIS (INDOBIS) NODC WOD01 Plankton Database.
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