رده بندی / Names
اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa
>
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Economidichthys: Greek, oikonomos = manager of a household, steward (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
; آب شيرين نزديك كف زي; تغييرات عمق ? - 15 m (Ref. 59043). Temperate; 39°N - 38°N
Europe: endemic to the oligotrophic Lake Trichonis, western Greece.
Length at first maturity / Size / Weight / سن
Maturity: Lm 1.8 range ? - ? cm
Max length : 3.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 12215); 2.7 cm TL (female); بيشينه سن گزارش شده: 1.75 سال ها (Ref. 59043)
توصيف مختصر
ريخت شناسي | ريخت ستجي بوسيله انداره گيري
خارهاي باله مخرجي 1; شعاع نرم باله مخرجي: 9 - 11; مهره ها: 30 - 31. Body pale, with long vertical stripes in both sexes, some over 2/3 body depth; perianal organ small, less than half length of pelvic disc; pelvic anterior membrane depth about half pelvic spine length in ventral midline; body with well spaced scales in single series along lateral midline, and otherwise naked except on caudal peduncle and side of anterior abdomen; typical D2 I/10-11; interorbit with two transverse rows of sensory papillae.
With a mature female at 18 mm SL, this is the smallest European freshwater fish; 2.1 mm at hatching its larvae are the smallest free-living European vertebrates. Found in areas covered by aquatic vegetation, in reed stands; in sheltered bays down to 15 m (Ref. 59043); at the mouth of tributary streams and has been observed in small shoals near the surface, over open areas of gravel or stones (Ref. 26100). Feeds on invertebrates, mainly on cladocerans and larvae of mussel Dreissena polymorpha during the spawning season. Spawns after first winter, from February to May, with eggs (0.7 x 0.6 mm) deposited in a cavity (usually inside standing, broken reeds); these are cleaned and guarded by the male. A single nest may occupy up to 2000 eggs spawned by several females; with females spawning at least twice during the season. Eggs hatch in about a day, the larvae living on the surface layer, near shore, and after yolk absorption, live in deeper layers or near bottom, moving upward at night. Maximum known age is 21 months. Land reclamation, lake level fluctuations resulting to water abstraction and pollution threaten survival of this species (Ref. 59043).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Eggs are spawned in a cavity; they are cleaned and guarded by the male (Ref. 59043). A single nest is usually occupied by up to 2000 eggs spawned by several females. Females spawn at least twice during a season (Ref. 59043).
Miller, P.J., 1990. The endurance of endemism: the Mediterranean freshwater gobies and their prospects for survival. J. Fish Biol. 37(Suppl.A):145-156. (Ref. 12215)
وضعيت در فهرست قرمز IUCN (Ref. 130435)
خطر برای انسان ها
Harmless
استفاده انسانی
اطلاعات بيشتر
Age/Sizeرشدطول - وزنطول - طولنوسانات طولیريخت ستجي بوسيله انداره گيريريخت شناسيتوزاد ( لارو)پويايي لارويبازسازیفراوانيBRUVS
مراجعآبزي پرورينمايه آبزي پرورينژادهاژنتيكElectrophoresesوارثبيماري هافرآوریNutrientsMass conversion
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00442 - 0.02163), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.37 se; based on food items.
Generation time: 0.7 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
جهندگی (Ref.
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
