Overview

Distribution

Biogeography

Palaearctis
Nearctis
Antarctis

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Type locality: Baltic Sea, Germany.

Cosmopolite species.

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© Leasi, Francesca

Source: Marine Rotifera

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Physical Description

Morphology

Body fusiform, elongate, slender; cuticle very flexible, outline variable; hyaline. Head offset by distinct neck-fold. Tail prominent, rounded. Foot very long, ≥ 4 1/4 total length, 2 pseudosegments, basal pseudosegment short, stout, c. 1/3 length slender terminal pseudosegment; foot telescopically retractable within body. Toes long, slender, lanceolate. Corona slightly oblique, 2 lateral ciliary tufts. Brain moderately large, saccate. Two frontal eyespots, set close together, occasionally fused, often disappearing in adults. Retrocerebral organ absent. Stomach and intestine separated by shallow constriction; proventriculus present. Gastric glands rounded, compressed laterally. Pedal glands very long, elongated, extending into trunk.

Male with functional (?) mastax; foot short, toes lanceolate with slightly drawn-out tips, decurved ventrally.

Rami asymmetrical, broadly triangular, short, alulae short, ± acute; inner margins right with 1-(2) pair(s) of close set teeth; left basal apophyse very large, right short, small; dorsal fenestrae postero-lateral, right larger; a single ventral fenestra, left. Fulcrum very short, in ventral view rod-shaped with slightly expanded posterior end, in lateral view slightly curved. Unci with 4-5 clubbed teeth, ± gradually decreasing in size, principal teeth each with accessory toothlet ventrally; inner side with preunci and plate with skleropili. Manubria long, slender, clubbed, head with 2 short lateral cavities; opening of posterior cavity on inner side, opening of median and anterior cavity externally; posterior end incurved.

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© Leasi, Francesca

Source: Marine Rotifera

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Size

Length 200-380 µm, toe 20-28 µm; trophi 30-45 µm: ramus 9-12 µm, fulcrum 6 µm, uncus 12-14 µm, manubrium 24-25 µm.

Length male 150-155 µm.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Leasi, Francesca

Source: Marine Rotifera

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Type Information

Collection specimen

Non-type voucher specimen for Proales reinhardti (Ehrenberg, 1834)
Catalog number: 19966
Collection: National Museum of Natural History, Smithsonian Institution, Washington DC, USA
Prepared by: Myers, F J
Sex/stage/structure: females
Preparation: Slide Preparation; Microscope slide
Specimen Count: 2

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Ecology

Habitat

Depth range based on 1 specimen in 1 taxon.

Environmental ranges
  Depth range (m): 0.75 - 0.75
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Marine but reported also for freshwater habitat.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Leasi, Francesca

Source: Marine Rotifera

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Trophic Strategy

Food: dinoflagellates, small diatoms, bacteria.

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© Leasi, Francesca

Source: Marine Rotifera

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General Ecology

Ecology

Wide-spread in vegetation and sedimentation zone, rock pools, marine and brackish tide puddles, in brine channels of arctic sea ice; -1.5-20°C, salinity 6-40‰.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Leasi, Francesca

Source: Marine Rotifera

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