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Alcolapia grahami (Boulenger, 1912)

Magadi tilapia
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Image of Alcolapia grahami (Magadi tilapia)
Alcolapia grahami
Male picture by Seegers, L.

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

ماهبان شعاع باله > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Alcolapia: From Albert Alcock, 1891, edited the research campaigne carried out by the ship Investigator in Bengal and Calcute + Bechauana, Tihape = fish.  More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range بوم شناسي

; آب شيرين موجوداتی که در محدوده وسیعی از آبهای آزاد از نزدیک بستر و یا روی کف بستر، در قسمت های میان آبی تا سطح آب و در برخی گونه ها با قابلیت پرواز، زندگی و تغذیه می کنند.; pH range: 7.5 - 8.5; dH range: 10 - 20.   Tropical; 24°C - 32°C (Ref. 2060); 1°S - 2°S

پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri

Africa: Lake Magadi in Kenya (Ref. 52331). Introduced in Lake Nakuru and Lake Elmenteita, both in Kenya (Ref. 52331). Reported as introduced to Lake Natron in Tanzania (Ref. 13364), but there is currently no evidence that any introduction led to establishment of breeding populations (Ref. 118638).

Length at first maturity / Size / Weight / سن

Maturity: Lm ?, range 3 - ? cm
Max length : 20.0 cm SL جنس نر / بدون خواص جنسي; (Ref. 2)

توصيف مختصر ريخت شناسي | ريخت ستجي بوسيله انداره گيري

خارهاي باله پشتي (کل): 11 - 13; شعاع نرم باله پشتي (کل): 12-13; خارهاي باله مخرجي 3; شعاع نرم باله مخرجي: 9 - 11; مهره ها: 28. Mature females with an overall golden hue; males with the flanks a pale blue. Swollen and brilliant white lateral parts of the lower lip of the mature male. Blue spots on scales becoming iridescent. Genital papilla conical, prominent and yellow in the mature male; swollen in the mature female. An oblique eye-bar intensely black in the breeding male, duller in the female.

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

Occur at temperatures ranging from 16.0-40.0 °C (Ref. 2). Feed actively in the evening. Young O. alcalicus grahami eat eggs as they are shed by the female, and much of the time and energy of the territorial male is occupied in driving them off. Feed on invertebrates, at the surface (Ref. 2).

Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)

Male prepares a breeding pit, the structure of which may vary with the nature of the substratum. Breeding activities are more actively pursued by both sexes in the morning than in the afternoon. Female lays about 3-10 eggs at a time, picks them up instantly and the male swims with his genital papilla near the mouth, probably emitting sperm. Brooding period reportedly 12-16 days.

مآخذ اصلی Upload your references | مراجع | هماهنگ كننده : Kullander, Sven O. | همكاران

Seegers, L. and H. Tichy, 1999. The Oreochromis alcalicus flock (Teleostei: Cichlidae) from lakes Natron and Magadi, Tanzania and Kenya, with descriptions of two new species. Ichthyol. Explor. Freshwaters 10(2):97-146. (Ref. 32272)

وضعيت در فهرست قرمز IUCN (Ref. 120744)


CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

  Harmless





استفاده انسانی

ماهي گيري – شيلات: ; آكواريوم: تجاري
FAO(Publication : search) | FishSource |

اطلاعات بيشتر

اسامي عام
مترادف
سوخت و ساز
شکارچیان
سم شناسي بوم زيستي
تولید مثل
بلوغ
تخم ریزی
Spawning aggregation
Fecundity
تخم ها
نمو تخم
Age/Size
رشد
طول - وزن
طول - طول
نوسانات طولی
ريخت ستجي بوسيله انداره گيري
ريخت شناسي
توزاد ( لارو)
پويايي لاروي
بازسازی
فراواني
مراجع
آبزي پروري
نمايه آبزي پروري
نژادها
ژنتيك
تواتر آلل ها
وارث
بيماري ها
فرآوری
Mass conversion
همكاران
عکس ها
Stamps, Coins Misc.
صداها
سيگواترا
سرعت
نوع شناگری
منطقه آبششي
Otoliths
مغزها
بینایی

ابزارها

گزارش های ويژه

بارگيری XML

منابع اينترنتي

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00747 - 0.04041), b=3.03 (2.83 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.8   ±0.28 se; Based on food items.
جهندگی (Ref. 69278):  زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
آسيب پذيری (Ref. 59153):  Low to moderate vulnerability (27 of 100) .
طبقه قيمت (Ref. 80766):   Unknown.