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 Naslov prispevka: Re: Neolamprologus pulcher
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Neolamprologus pulcher and the analogy of N. brichardi
http://blog.africandivingltd.com/2017/0 ... -of-n.html

Face recognition in the Tanganyikan cichlid Julidochromis transcriptus
http://www.sciencedirect.com/science/ar ... 7217300738
https://www.newscientist.com/article/21 ... que-faces/



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 Naslov prispevka: Re: Neolamprologus pulcher
UNREAD_POSTObjavljeno: 23. dec 2014 14:46 
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African Diving Ltd

https://www.google.si/search?q=Neolampr ... 9D&imgrc=_
A princess draped in gold

A new geographical variant of Neolamprologus pulcher has been found at Kasola Island in southern Tanzania. It is distinguished from adjacent populations by a golden colour that is especially prominent on the cheeks. The discovery was made in May 2008 when several new populations of the species were found whereof the Kasola Island population being one of the most conspicuous.

Commonly regarded as two distinct species, Neolamprologus pulcher and N. brichardi are differentiated from each other based on their facial patterns of vertical and horizontal stripes. Alternating populations with either one of the two major facial patterns are found along the coast in the southern part of the lake, and “the lake-wide distribution of interconnected populations showing clinal morphological variation suggests they are the same species” (Dierkes et al. 2005). In the area between Kasola Island and Katili in southern Tanzania, populations with intermediate facial patterns have been found; especially in populations at Nkonkonti Point and the nearby Nakiwumbu Rocks the facial patterns are similar to both of the species (pers. obs.)

The mtDNA study by Duftner et al. (2007) disagrees with the species assignment of the two species, which are based on the facial patterns, and instead indicates a parallel evolution of this pattern. This would in turn suggest that the many differently facial striped populations belong to one and the same species, alternatively to many more species than just two; see also Hieronimus (2008).

Because Neolamprologus pulcher (Trewavas & Poll, 1952) has priority over N. brichardi (Poll, 1972) the uniform name for both of them will be N. pulcher.

The picture shows an adult individual of Neolamprologus pulcher “Princess Gold” in its full splendour at Kasola Island in five metres depth. Juveniles and sub-adults may have a blue and golden facial pattern but with age the pattern becomes increasingly golden and the blue colour tends to disappear.

Reference;

Dierkes, P., Heg, D., Taborsky, M., Skubic, E. and Achmann, R. (2005) Genetic relatedness in groups is sex-specific and declines with age of helpers in a cooperatively breeding cichlid. Ecology Letters, 8 (9): 968–975.

Duftner, N., Sefc, K. M., Koblmüller, S., Salzburger, W., Taborsky, M. and Sturmbauer, C. (2007) Parallel evolution of facial stripe patterns in the Neolamprologus brichardi/pulcher species complex endemic to Lake Tanganyika. Molecular Phylogenetics and Evolution, 45 (2): 706–715.

Hieronimus, H. (2008) Aqua News; Aus zwei mach eins. Aquarium Live, 12 (2): 37. Bede-Verlag, Ruhmannsfelden.
A princess draped in gold A new geographical variant of Neolamprologus pulcher has been found at Kasola Island in southern Tanzania. It is distinguished from adjacent populations by a golden colour that is especially prominent on the cheeks. The discovery was made in May 2008 when several new populations of the species were found whereof the Kasola Island population being one of the most conspicuous. Commonly regarded as two distinct species, Neolamprologus pulcher and N. brichardi are differentiated from each other based on their facial patterns of vertical and horizontal stripes. Alternating populations with either one of the two major facial patterns are found along the coast in the southern part of the lake, and “the lake-wide distribution of interconnected populations showing clinal morphological variation suggests they are the same species” (Dierkes et al. 2005). In the area between Kasola Island and Katili in southern Tanzania, populations with intermediate facial patterns have been found; especially in populations at Nkonkonti Point and the nearby Nakiwumbu Rocks the facial patterns are similar to both of the species (pers. obs.) The mtDNA study by Duftner et al. (2007) disagrees with the species assignment of the two species, which are based on the facial patterns, and instead indicates a parallel evolution of this pattern. This would in turn suggest that the many differently facial striped populations belong to one and the same species, alternatively to many more species than just two; see also Hieronimus (2008). Because Neolamprologus pulcher (Trewavas & Poll, 1952) has priority over N. brichardi (Poll, 1972) the uniform name for both of them will be N. pulcher. The picture shows an adult individual of Neolamprologus pulcher “Princess Gold” in its full splendour at Kasola Island in five metres depth. Juveniles and sub-adults may have a blue and golden facial pattern but with age the pattern becomes increasingly golden and the blue colour tends to disappear. Reference; Dierkes, P., Heg, D., Taborsky, M., Skubic, E. and Achmann, R. (2005) Genetic relatedness in groups is sex-specific and declines with age of helpers in a cooperatively breeding cichlid. Ecology Letters, 8 (9): 968–975. Duftner, N., Sefc, K. M., Koblmüller, S., Salzburger, W., Taborsky, M. and Sturmbauer, C. (2007) Parallel evolution of facial stripe patterns in the Neolamprologus brichardi/pulcher species complex endemic to Lake Tanganyika. Molecular Phylogenetics and Evolution, 45 (2): 706–715. Hieronimus, H. (2008) Aqua News; Aus zwei mach eins. Aquarium Live, 12 (2): 37. Bede-Verlag, Ruhmannsfelden.
Bojan Dolenc



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 Naslov prispevka: Re: Neolamprologus pulcher
UNREAD_POSTObjavljeno: 06. dec 2013 09:38 
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Pridružen: 13. maj 2010 10:33
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it is interesting to read:
Duftner, Sefc, Koblmueller, Salzburger, Taborsky, Sturmbauer - Parallel evolution of facial stripe patterns in the Neolamprologus brichardi/pulcher species complex endemic to Lake Tanganyika:
http://behav.zoology.unibe.ch/sysuif/up ... ol2007.pdf

Benoit Calveo Jonas: Currently the two species have been synonymy (N. pulcher) after work on the genome.



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 Naslov prispevka: Neolamprologus pulcher
UNREAD_POSTObjavljeno: 11. okt 2011 17:25 
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Slika
http://aquavitro.org/wp-content/uploads/2014/10/Neolamprologus-pulcher-3.jpg

Lirorepi ostrižnik iz jezera Tanganjika je bil dolgo časa znan v akvaristiki pod imenom Neolamprologus brichardi, vendar so lani avstrijski biologi z molekularno DNK analizo dokazali, da sta vrsti N. brichardi iz severnega dela jezera in vrsta N. pulcher iz južnega dela jezera ista vrsta; ker je bila N. pulcher prej opisana, sedaj veljata obe populaciji za vrsto Neolamprologus pulcher, Trewavas & Poll, 1952.
Ugotovili so, da so se za lirorepe ostrižnike značilni barvni vzorci na škržnih poklopch v obliki črkeT, ki so obarvani modro/rumeno, razvili pri tanganjišjih ostrižnikih plemena Lamprologini tekom evolucije neodvisno večkrat (paralelna evolucija), ne samo pri prednikih te vrste!Že dolgo je bilo znano, da imata obe “vrsti” lahko celo plodne mladiče in se v akvariju redno parita med seboj. V akvaristiki je riba znana pod legendarnim imenom "Princess of Burundi"; “južnjakinjo” N. pulcher so popularno imenovali “Princess of Zambia”. Mladiči nekaterih populacij imajo oranžne plavuti; obstaja geografska podvrsta, v akvaristiki cenjena in znana kot Neolamprologus pulcher "Daffodil", ki ima podoben škržni vzorec in rumene neparne plavuti pri mladičih in odraslih. Ker je jezero Tanganjika geološko mnogo starejše od sosednjih jezer Malawi ali Viktorija, so se tu razvile bolj kompleksne in napredne oblike obnašanja in skrbi za mladiče, kar je zagotovilo, da je vrsta uspešna in konkurenčna v svojem habitatu. V svojih "drobnih možganih" so te ribe sposobne vzpostaviti kompleksne povezave med socialnim statusom vsake posamezne ribe v jati, razmnoževalno fiziologijo in skupinsko dinamiko.

Taksonomija: Acanthopterygii - Perciformes - Labroidei - Cichlidae – Pseudocrenilabrinae - Lamprologini – Neolamprologus.
Sinonimi: Lamprologus savoryi (Poll 1949); Lamprologus brichardi (Poll 1974); Lamprologus savoryi elongatus, Neolamprologus elongatus (Trewawas & Poll, 1952).

Tuja imena: Lyretail cichlid, Fairy cichlid; Gabelschwanzbuntbarsch.

Sorodne vrste: "Neolamprologus brichardi/pulcher kompleks": Neolamprologus gracilis; N. falcicula; N. splendens; N. marunguensis; N. crassus; N. chitamwebwai;N. walteri.

Domovina: vzhodnoafriško jezero Tanganjika.

Biotop/habitat
: živi v habitatu " s sedimentom bogato skalovje" v globinah od 10 m navzdol.

Velikost: 6 – 10 cm. Spol: samci so malenkost večji, imajo bolj podaljšane plavuti. Obnašanje: živijo v stalni družinski jati, kjer imata alfa samica in izbran alfa samec vodilno vlogo in se drstita, vsi ostali člani morajo skrbeti za njun zarod (kot pri šakalih). Spremembe v socialnem statusu pri tej vrsti uravnavajo izključno dominantne samice. Samec, ki ga je izbrala samica za vodilnega, postane bolj agresiven, naraste mu stopnja testosterona in testisi se mu povečajo za 100% v tednu dni. Če po nesreči alfa samec pogine, samica izbere novega vodilnega, pri tem je znanstvenike presenetilo, da za izbor ne igra nobene vloge genetika, velikost ali stopnja testosterona pri samčku, ampak to določi alfa samica "po lastni presoji", običajno je to samček, ki je bil najbolj servilen in aktiven okoli alfa samice.

Ureditev akvarija: velikost minimalno 120 cm = ~240 litrov. Na dno damo fin koralni (aragonitni) pesek, uporabimo veliko kamnov (najbolje naluknjanih, t.i. “luknjasti jadranski kamni” , s katerimi naredimo votline in skrivališča. Primerni sostanovalci sorodni ostrižniki rodov Julidochromis, Altolamprologus, Cyprichromis, Lamprologus, hrbtoplovci rodu Synodontis ali tanganjiška kili ribica Lamprichthys tanganicanus.

Temperatura: 25 – 27°C. Voda: 12 °dGH; 14°dKH; električna prevodnost = 550 -600 microSiemens; pH: 8.8 - 9,3. Občutljivi so na amonij, nitrit in nitrat, zato je potrebna odlična filtracija in redna menjava vode.

Hrana: v naravi je planktivor (večinoma se hrani z rakci, podobnimi samookom, Cyclops). V akvariju sprejema večino žive, zmrznjene in posušene hrane.

Razmnoževanje: ikre odlaga samica na kamne v votlinah. Za zardi skrbi cela družina; . večji mladiči skrbijo za mlajše in delujejo kot "učinkovita plemenska skupnost", glavno besedo ima dominantna samica in z lahkoto zasedajo in širijo svoje teritorije v okolju.
Posebnosti: V akvariju redno opažamo, da je družina teh matriarhalnih rib tako uspešna, da z lahkoto vzgajajo mladiče tudi v akvariju, kjer je polno mnogo večjih ostrižnikov, pogosto malavijskih ali viktorijskih ali celo srednjeameriških. Vrsta je dejansko pogosta in izjemno uspešna, ključna vrsta v celotnem habitatu!
Stopnja zahtevnosti: v ujetništvu je to klasična vrsta tanganjiškega ostrižnika, ki se jo svetuje tudi začetnikom, ki želijo urediti biotop akvarij Tanganjika.
Priporočena literatura: Duftner, N, KM Sefc, S Koblmüller, W Salzburger, M Taborsky & C Sturmbauer (2007): Parallel evolution of facial stripe patterns in the Neolamprologus brichardi/pulcher species complex endemic to Lake Tanganyika. Molecular Phylogenetics and Evolution 45, pp. 706–715.


>> glej novico: Tudi ribe imajo matriarhat
>> glej DISKUSIJE: http://www.akvazin.com/diskusije/defaul ... 00&Rows=10

Copyright© Bojan Dolenc



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