Pseudoscaphirhynchus hermanni, Dwarf sturgeon

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Pseudoscaphirhynchus hermanni (Kessler, 1877)

Dwarf sturgeon
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Image of Pseudoscaphirhynchus hermanni (Dwarf sturgeon)
Pseudoscaphirhynchus hermanni
Female picture by Salnikov, V.B.

Classification / Names आम नाम | उपशब्द | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

ऐकटीनोप्टीरेजी (रेज़-फिन्नढ मछलियाँ) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Pseudoscaphirhynchus: Greek, pseudes = false + Greek, skaphe = boat + Greek, rhyngchos = snout (Ref. 45335).

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

; स्वच्छ जल, अलवण जल; खारा ड़िमरसल; पोटामोड़िरोमस (Ref. 51243).   Temperate

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

Former USSR and Asia: Endemic to the basin of Amu Dariya and Sir Dariya rivers (Ref. 35930). Considered endangered or extinct by authors (Ref. 6866). Registered in the International trade restricted (CITES II, since 1.4.98; CMS Appendix II); 1984 USSR Red Book; 1985 Turkmen SSR Red Data Book; 1996 IUCN Red List; and, 1997 CITES Lists (Ref. 35930).

आकार / वज़न / Age

Maturity: Lm ?  range ? - ? cm
Max length : 27.5 cm TL पुल्लिंग / अलिंग; (Ref. 35930); अधिकतम प्रकाशित वज़न: 50.50 g (Ref. 35930); अधिकतम सूचित उम्र: 6 वर्षो (Ref. 35930)

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ epibenthic)

A rare and endangered species; smallest sturgeon; sensitive to chemicals in the water Ref. 35930).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

IUCN Red List Status (Ref. 123251)

  Critically Endangered (CR) (A2c); Date assessed: 24 October 2009

CITES (Ref. 118484)


Threat to humans

  Harmless





Human uses

मात्स्यिकी: कोई रुचि बग़ैर
FAO(मात्स्यिकी: species profile; publication : search) | FishSource |

अधिक जानकारी

देश
ऐफ ऐ ओ क्षेत्र
Ecosystems
संयोग
भूमिका
Stocks
पारिस्थितिकी
आहार
खाद्य पदार्थ
आहार खपत
खोराक
आम नाम
उपशब्द
चपायचय
परभक्षी
ईकोटोकसीकोलौजी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Spawning aggregation
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
लार्वा
लारवल गतिकी
भर्ती
बहुतायत
संदर्भ
जलीयकृषि
जलीयकृषि रूपरेखा
खींच
आनुवंशिकी
ऐल्लि आवृतियाँ
हैरेटिबिलटी
बीमारी
प्रक्रमण
Mass conversion
सहयोगीयो
तस्वीरे
Stamps, Coins Misc.
ध्वनि
सिगुयटिरा
रफ्तार
तैरने के प्रकार
गिल क्षेत्र
Otoliths
दिमाग
दृष्टि

साधन

Special reports

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इंटरनेट स्रोत

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, खोज) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00146 - 0.00716), b=3.16 (2.97 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.5 se; based on size and trophs of closest relatives
लौटाव (Ref. 120179):  माध्यम, न्यूनतम जनसंख्या दुगनी होने का समय 1.4 - 4.4 वर्ष। (tmax=6).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (30 of 100) .