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 Naslov prispevka: Re: Dawkinsia filamentosa
UNREAD_POSTObjavljeno: 24. jul 2012 07:49 
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Pridružen: 13. maj 2010 10:33
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Imajo jih v Mr. Pet-u v BTC-ju pod zanimivim imenom "Barbus mahecola" :roll: :twisted:
Seveda napačnim. Kdor pozna ozadje in zgodovinsko zmešnjavo okoli tega imena, lahko razume, zakaj sem uporabil ta 2 smeška. Tragikomično.
Ribe so pa res lepe, imajo v trgovini tudi urejen en okrasni biotop akvarij, kjer plava jata teh ribic, družbo pa jim delata 2 sorodne mrenice, mislim da so vrste panda mrenica, Dravidia melanampyx. Vse pohvale za ta akvarij oz. to ureditev in naselitev (lahko bi bil sicer večji, a naj bo)!

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 Naslov prispevka: Dawkinsia filamentosa
UNREAD_POSTObjavljeno: 16. jul 2012 13:44 
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Pridružen: 13. maj 2010 10:33
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črnopikasta ali nitoplavuta mrenica, Dawkinsia filamentosa (Valenciennes, 1844)
> Red: Cypriniformes > družina: Cyprinidae
Sinonim: Puntius filamentosus
Etimologija: rod je dobil ime po britanskemu evolucijskemu biologu in etologu Richard-u Dawkins-u, v čast za njegov izjemen in popularen prispevek k biologiji in evolucijski znanosti. Vrstno ime filamentosus od latinsko filum = nit. Se nanaša na nitaste izrastke (podaljšane plavutnice) na hrbtni plavuti.
> Tuja Imena: Blackspot barb, Filamented barb, Longfin barb; Mahecolabarbe, Schwarzfleckbarbe; Parmička černoskvrnná, Parmička vláknitá, Parmička vláknoploutvá (Czech Rep.)...
> Sorodne vrste v rodu Dawkinsia*:
- D. arulius (Jerdon, 1849),
- D. assimilis (Jerdon, 1849),
- D. exclamatio (Pethiya­goda & Kottelat, 2005),
- D. rohani (Rema Devi, Indra & Marcus Knight, 2010),
- D. ru­brotinctus (Jerdon, 1849),
- D. singhala (Duncker, 1912),
- D. srilankensis (Sena­nayake, 1985),
- D. tambraparniei (Silas, 1954).
Rod je omejeno razprostranjen le v južni Indiji in na Sri Lanki.
*= Dawkinsia, new genus. Type species: Leuciscus filamentosus Valenciennes, in Cuvier & Valenciennes, 1844.
Diagnosis. Dawkinsia differs from all South and Southeast Asian genera of Cyprinidae by the combination of the following characters and character states: adult size usually 80-120 mm SL; rostral barbels absent, maxillary barbels present or absent; last unbranched dorsal-fin raysmooth; 4 unbranched and 8 brancheddorsal-fin rays, 3 unbranched and 5 branched anal-fin rays; lateral line complete, with 18-22 scales on body; gill rakers simple, acuminate (not branched or laminate); no antrorse predorsal spinous ray; free uroneural present; 4-5 supraneurals; 15 precaudal and 14-17 caudal vertebrae; post-epiphysial fontanelle absent; infraorbital 3 slender, not overlapping preoperculum; juvenile (< 50 mm SL) colour pattern consisting of three black bars on body, persisting to adult stage in some species; a black, horizontally elongate blotch on the caudal peduncle in adults.
Pethiyagoda et al (2012): A synopsis of the South Asian fishes referred to Puntius (Pisces: Cyprinidae). Ichthyol. Explor. Freshwaters, Vol. 23, No. 1, pp. 69-95, 11 figs., 4 tabs., June 2012
http://t.co/tDVmVXA2

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Dawkinsia exclamatio (Pethiya­goda & Kottelat, 2005)

> Domovina: Indija; endemična vrsta za hribocito področje Zahodnih vrat (Western Ghats) v Južni Indiji v pokrajinah Kerala, Tamil Nadu in Karnataka. Tipski primerek je bil najden blizu obale pri mestu Alleppey (aka Alappuzha) v Kerali.
> Biotop/habitat: nižinske obalne sladke in brakične vode, potoki, reke, priobalna močvirja, jarki in ribniki. Akvaristično znane vrste rib, ki naseljujejo iste vode so: Dawkinsia arulius, D. assimilis, D. rubrotinctus, Pethia conchonius, Puntius denisonii, Dravidia fasciata, Barilius bakeri, B. bendelisis, B. canarensis, Devario malabaricus, Esomus danricus, Garra mcclellandi, G. hughi, Bhavania australis, Travancoria jonesi, Mesonoemacheilus guentheri, M. triangularis, Schistura denisonii, Lepidocephalichthys thermalis, Batasio travancoria, Mystus armatus, M. canarensis, Glyptothorax annandalei, Aplocheilus lineatus, Parambassis thomassi, Etroplus canarensis, E. maculatus, Sicyopterus griseus, Pseudosphromenus dayi, Channa striata and Carinotetraodon travancoricus.
> V: 100 – 120 mm.
> T.= 20°C - 24°C
> pH: 6.0 – 7.0; trdota: 36 – 268 ppm

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http://threatenedtaxa.org/ZooPrintJournal/2010/August/
Adult male D. filamentosa collected from lakes near Sriperambathur, Tamil Nadu, India (116.0mm SL, ZSI/SRS F.8368).

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http://www.aquariumphoto.dk/puntius_filamentosus.htm

> Reference: Sri Lanka identifies new genus of fresh-water fish



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 Naslov prispevka: Dawkinsia filamentosa
UNREAD_POSTObjavljeno: 13. jun 2010 11:38 
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Pridružen: 13. maj 2010 10:33
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http://3.bp.blogspot.com/_7PD10If-KW8/TBGWSm9FxhI/AAAAAAAAHDs/l4dKu9sP8lw/s1600/p.jpg

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Figure 1. Illustrating the utility of DNA barcodes in biosecurity.

Dawkinsia filamentosa (Puntius filamentosus) (A) and Dawkinsia (P.) assimilis (B) are two species strikingly similar in appearance; morphological differences are especially difficult to discern when these are exported as juveniles. Here, we demonstrate they can be readily separated by DNA barcodes, with the two specimens pictured here differing by a 17.6% divergence in K2P distance for COI.
doi:10.1371/journal.pone.0028381.g001

ˇˇˇˇˇˇˇˇˇˇ
Mahecolabarbe Case
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Slika http://novataxa.blogspot.com/2012/02/20 ... ption.html
[Ichthology • 2005] The identity of the south Indian barb Puntius mahecola (Teleostei: Cyprinidae) • redescribe based on recent collections from Kerala, India
Slika Puntius mahecola photo by segrestfarms.com
Abstract
Leuciscus mahecola Valenciennes has long been placed in the synonymy of Leuciscus filamentosus Valenciennes (both species are currently referred to Puntius Hamilton). An examination of the syntype series of P. mahecola together with specimens collected recently in Kerala, India, shows however, that it is a valid species that has been referred in the current literature to P. amphibius (Valenciennes). Puntius mahecola is distinguished from other southern Indian and Sri Lankan Puntius species by having the last simple dorsal ray smooth; body depth 27.2–32.0% SL; a single pair of (maxillary) barbels, about ½ eye diameter long; and a horizontally-elongate black blotch about 1½ times as wide as it is high across 3½ scales of the lateral line immediately behind the anal-fin base. Lectotypes are designated for Leuciscus mahecola and Capoeta amphibia, and the former species redescribed based on the type specimens and a recently-collected series. A lectotype is designated for Barbus melanostigma Day, which is a junior subjective synonym of P. mahecola.
Pethiyagoda, R. & M. Kottelat. 2005. The identity of the south Indian barb Puntius mahecola (Teleostei: Cyprinidae). Raffles Bulletin of Zoology Supplement 12: 145-152. http://rmbr.nus.edu.sg/rbz/biblio/s12/s12rbz145-152.pdf
Notes
This species is uncommon in the international aquarium trade and only available occasionally but is quite popular among enthusiasts of native species in India. It has a chaotic taxonomic history with certain issues still to be resolved. While the name P. mahecola was misapplied to members of the Puntius filamentosus species group for over a century the fish itself has been widely misidentified as the congener P. amphibius (Valenciennes 1842).
Its identity was partially resolved by Pethiyagoda and Kottelat (2005b) who demonstrated that though valid P. mahecola is not a P. filamentosus-type fish but rather a smaller, relatively plain species with a single dark blotch on the caudal peduncle, located entirely posterior to the anal-fin. Several members of the P. filamentosus group, particularly P. assimilis, continue to appear on aquarium trade lists as ’mahecola barb’ or P. mahecola, however.

Prava mahecola (majhna ribica do 7 cm):
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