Abyssorchomene abyssorum [(Stebbing, 1888) ]

Abyssorchomene abyssorum (Stebbing, 1888)

Abyssorchomene abyssorum

General description:

Male: Antenna 1 shorter than antenna 2; flagellum article 1 as long as remaining articles combined. Antenna 2 less than 40% of body length; calceoli present. Eyes present, colourless in alcohol. Lateral cephalic lobes broadly rounded. Maxilliped palp 4-articulate; inner plate poorly developed, not reaching half length of outer plate.

Gnathopod 1 subchelate; coxa large, about as long as coxa 2, subrectangular with concave anterior margin; ischium short; carpus compressed, distinctly shorter than propodus; propodus margins subparallel, palm transverse. Gnathopod 2 chelate; carpus at least twice as long as propodus; dactylus minute. Pereopod 5 coxa equilobate; basis distinctly longer than broad. Coxa 6 equilobate.

Epimeron 1 anterodistal corner acute; epimeron 3 posterodistal corner rounded to slightly acute. Urosomite 1 with dorsal depression. Uropod 1 rami subequal; uropod 2 rami distinctly unequal, inner ramus without marginal constriction(s); uropod 3 rami distinctly unequal, outer ramus 2-articulate, article 2 short. Telson almost twice as long as broad, moderately to deeply cleft.

Female (sexually dimorphic characters): Calceoli absent from antennae.

Size:

10 mm.

Distribution:

Cosmopolitan.

Habitat:

Bathyal to abyssal.

2013-01-26 01:26 -- Niamh Kilgallen

EOL Text

Sampled in mussel and clam beds.

License	http://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author	Biologiezentrum Linz/Austria
Source	http://www.biologiezentrum.at/pdf_frei_remote/DENISIA_0018_0382-0409.pdf

Distribution:

European waters (ERMS scope)

Bellan-Santini, D.; Costello, M.J. (2001). Amphipoda, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 295-308

License	http://creativecommons.org/licenses/by/3.0/
Rights holder/Author	Costello, Mark, World Register of Marine Species
Source	http://www.marinespecies.org/aphia.php?p=taxdetails&id=102492

Galapagos Spreading Center; worldwide abyssal distribution to 9000 m.

License	http://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author	Biologiezentrum Linz/Austria
Source	http://www.biologiezentrum.at/pdf_frei_remote/DENISIA_0018_0382-0409.pdf

(Family) Body compact. Peduncle of antenna 1 short and stout, articles 2-3 much shorter than 1 and partly telescoped. Article 3 of gnathopod 2 elongate. (Genus) Mouthparts forming quadrate bundle. Coxa 1 large and visible not tapering. Gnathopod 1 subchelate. Inner ramus of uropod 2 without notch. (Species) Lateral cephalic lobes broadly rounded. Eyes long, lunate, colorless in alcohol, glandular, ommatidia not evident. Peduncle of antenna 1 barely keeled. Carpus of gnathopod 1 short, posterior lobe narrow, well exceeding posterior tangential line between merus and propodus. Propodus of gnathopod 2 with palm short, chelate, not lunate, dactylus short and covering 100% of palmar edge, palm defined thin spinule and bearing weak inner setal basket. Article 2 of pereopods 5-7 with sparse, weak posterior setule-notches. Epimeral plate 3 weakly sinuous posteriorly, produced into weak blunt tooth posteroventrally, smooth. Dorsal process of urosomite 1 hood-shaped, weakly over-vaulting urosomite 2. Telson cleft about 50% of its length.

License	http://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author	Biologiezentrum Linz/Austria
Source	http://www.biologiezentrum.at/pdf_frei_remote/DENISIA_0018_0382-0409.pdf

6.1 mm in adult male.

License	http://creativecommons.org/licenses/by-nc-sa/3.0/
Rights holder/Author	Biologiezentrum Linz/Austria
Source	http://www.biologiezentrum.at/pdf_frei_remote/DENISIA_0018_0382-0409.pdf

Depth range based on 3 specimens in 1 taxon.
Water temperature and chemistry ranges based on 3 samples.

Environmental ranges
  Depth range (m): 2500 - 2889.5
  Temperature range (°C): 1.589 - 2.075
  Nitrate (umol/L): 38.813 - 39.449
  Salinity (PPS): 34.655 - 34.668
  Oxygen (ml/l): 2.461 - 2.531
  Phosphate (umol/l): 2.785 - 2.939
  Silicate (umol/l): 155.611 - 176.177

Graphical representation

Depth range (m): 2500 - 2889.5

Temperature range (°C): 1.589 - 2.075

Nitrate (umol/L): 38.813 - 39.449

Salinity (PPS): 34.655 - 34.668

Oxygen (ml/l): 2.461 - 2.531

Phosphate (umol/l): 2.785 - 2.939

Silicate (umol/l): 155.611 - 176.177

Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

License	http://creativecommons.org/publicdomain/mark/1.0/
Rights holder/Author	Ocean Biogeographic Information System
Source	http://www.iobis.org/mapper/?taxon_id=482970

Depth range based on 3 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 25 - 1070
  Temperature range (°C): 0.241 - 1.114
  Nitrate (umol/L): 25.907 - 33.654
  Salinity (PPS): 33.855 - 34.669
  Oxygen (ml/l): 4.985 - 7.618
  Phosphate (umol/l): 1.603 - 2.362
  Silicate (umol/l): 16.188 - 111.322

Graphical representation

Depth range (m): 25 - 1070

Temperature range (°C): 0.241 - 1.114

Nitrate (umol/L): 25.907 - 33.654

Salinity (PPS): 33.855 - 34.669

Oxygen (ml/l): 4.985 - 7.618

Phosphate (umol/l): 1.603 - 2.362

Silicate (umol/l): 16.188 - 111.322

Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

License	http://creativecommons.org/publicdomain/mark/1.0/
Rights holder/Author	Ocean Biogeographic Information System
Source	http://www.iobis.org/mapper/?taxon_id=830009

Lysianassoid Amphipoda of the World

Classification

Abyssorchomene abyssorum (Stebbing, 1888)

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