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Hypomesus transpacificus McAllister, 1963

Delta smelt
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Hypomesus transpacificus
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United States (contiguous states) country information

Common names: Delta smelt
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the Sacramento-San Joaquin Delta region in central California (Ref. 5723, 86798). Also Ref. 3814, 96339. Status of threat: threatened; status same as 1989. Criteria: 1,4,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Osmeriformes (Freshwater smelts) > Osmeridae (Smelts)
Etymology: Hypomesus: Greek, hypo = under + Greek,mesos = a half (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Οικολογία

; Γλυκού νερού; Υφάλμυρο Πελαγικό(ά); ανάδρομο (Ref. 51243).   Temperate; 73°N - 38°N (Ref. 26213)

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

North America: Sacramento-San Joaquin Delta region in central California, USA.

Length at first maturity / Μέγεθος / Βάρος / Age

Maturity: Lm ?, range 6 - ? cm
Max length : 12.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 5723); common length : 6.3 cm TL αρσενικό/απροσδιόριστο; (Ref. 12193); μεγ. αναφερόμενη ηλικία: 1.00 έτη (Ref. 12193)

Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία

Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 9 - 11; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 16 - 20; Σπόνδυλοι: 52 - 57. Vomer without posterior process; periphery of glossohyal bone with single row of conical teeth, central part toothless; pyloric caeca 4(2-5); base of adipose fin more than 20% of head length; eye large; adipose eyelid poorly developed.

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Adults occur in open brackish and freshwater of large channels. Diet consists of zooplankton (Ref. 33312).

Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες

Eggs are demersal (Ref. 33312).

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Saruwatari, T., J.A. López and T.W. Pietsch, 1997. A revision of the ormerid genus Hypomesus Gill (Teleostei: Salmoniformes), with a description of a new species from the southern Kuril Islands. Species Diversity 2:59-82. (Ref. 33312)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (A2bce); Date assessed: 17 February 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Trophic ecology
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Food consumptions
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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References
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Διαδικτυακές πηγές

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5313   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00182 - 0.00758), b=3.17 (2.99 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.2   ±0.1 se; based on diet studies.
Ελαστικότητα (Ref. 120179):  Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (tm=1; tmax=1).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).