American Livebearer Association :: Forum

Re: STUDY: Research shows male guppies reproduce even after death [by Melody]

Sat, 15 Jun 2013 21:59:17 -0100

Breeding Livebearers::STUDY: Research shows male guppies reproduce even after death
It can be even more complex. For example, one study found that sperm from native males takes precedence over males from other locations.

Gametic isolation in guppies (Poecilia reticulata)

That's what fascinates me about fish, there's always something to figure out.

Re: endler cross [by Melody]

Mon, 22 Apr 2013 06:08:42 -0100

Breeding Livebearers::endler cross
Somewhat like a Swallowtail.

I had a friend give me a bunch of accidental hybrids once. They had every tail shape, from sword to spade. They would have needed work to shape them up to standards, but it was all there. Kinda makes you wonder if the Guppy tail shapes didn't start with hybrids long before Endlers' were recognized as a separate species. It would be fun to test their genetics in a lab.

The Tree of Life and a New Classification of Bony Fishes [by Melody]

Sat, 20 Apr 2013 18:36:47 -0100

Breeding Livebearers::The Tree of Life and a New Classification of Bony Fishes
Not exactly on topic but close enough. Maybe we need a "Fish Science" section for us fish nerds .

A team of scientists led by Richard Broughton, associate professor of biology at the University of Oklahoma, published two studies that dramatically increase understanding of fish evolution and their relationships. They integrated extensive genetic and physical information about specimens to create a new "Tree of Life" for fishes.

April 18th, 2013
The Tree of Life and a New Classification of Bony Fishes
Abstract
The tree of life of fishes is in a state of flux because we still lack a comprehensive phylogeny that includes all major groups. The situation is most critical for a large clade of spiny-finned fishes, traditionally referred to as percomorphs, whose uncertain relationships have plagued ichthyologists for over a century. Most of what we know about the higher-level relationships among fish lineages has been based on morphology, but rapid influx of molecular studies is changing many established systematic concepts. We report a comprehensive molecular phylogeny for bony fishes that includes representatives of all major lineages. DNA sequence data for 21 molecular markers (one mitochondrial and 20 nuclear genes) were collected for 1410 bony fish taxa, plus four tetrapod species and two chondrichthyan outgroups (total 1416 terminals). Bony fish diversity is represented by 1093 genera, 369 families, and all traditionally recognized orders. The maximum likelihood tree provides unprecedented resolution and high bootstrap support for most backbone nodes, defining for the first time a global phylogeny of fishes. The general structure of the tree is in agreement with expectations from previous morphological and molecular studies, but significant new clades arise. Most interestingly, the high degree of uncertainty among percomorphs is now resolved into nine well-supported supraordinal groups. The order Perciformes, considered by many a polyphyletic taxonomic waste basket, is defined for the first time as a monophyletic group in the global phylogeny. A new classification that reflects our phylogenetic hypothesis is proposed to facilitate communication about the newly found structure of the tree of life of fishes. Finally, the molecular phylogeny is calibrated using 60 fossil constraints to produce a comprehensive time tree. The new time-calibrated phylogeny will provide the basis for and stimulate new comparative studies to better understand the evolution of the amazing diversity of fishes.

Re: Guppy Strain ID Please [by platymef]

Thu, 04 Apr 2013 23:16:35 -0100

Breeding Livebearers::Guppy Strain ID Please
Yes, I had hardy Hifin, Plumetail, Lyretail and "Super Sailfin" Swordtails & Platies due to either/ or outcrossing and selective breeding. Some will tell you that "Such & such strain is weak" and never try to improve it.

Darrell

Re: X helleri xX maculatus [by Rod54]

Fri, 15 Mar 2013 02:33:18 -0100

Breeding Livebearers::X helleri xX maculatus
This is what I'd love to get...

http://www.aquabid.com/cgi-bin/auctio ... fwlivebearersw&1363563709

Too hard to send direct to Australia.....but I have a contact in Thailand who could send to me in a regular shipment.....
so just have to get them sent to Thailand first!

Any assistance would be greatly appreciated...;)

Scientists identify why some fathers are left holding the baby [by Melody]

Wed, 13 Mar 2013 01:02:35 -0100

Breeding Livebearers::Scientists identify why some fathers are left holding the baby
I just know I'm going to have Mr. Hellweg and Mr. Coletti debating if this is a Livebearer issue or not, but I'm posting it anyway.

Scientists identify why some fathers are left holding the baby

Re: STUDY: X. monticolus arose through hybridization [by Editor]

Wed, 06 Mar 2013 23:36:11 -0100

Breeding Livebearers::STUDY: X. monticolus arose through hybridization
X. clemenciae same deal - they are all part of the same clade.

Re: Sword-less male Swordtail question [by CharlieO]

Tue, 05 Mar 2013 18:47:59 -0100

Breeding Livebearers::Sword-less male Swordtail question
Update - it's growing, but very, very slowly.

Thank you everyone for your input. I'm trying to attache a picture.

Re: How long can a female go without dropping? [by rcbows]

Wed, 13 Feb 2013 11:21:33 -0100

Breeding Livebearers::How long can a female go without dropping?
I have found the best book on livebearers is: Live-bearing Fishes, A Guide to their Aquarium Care, Biology and Classification, by John Dawes, 1991. It has a lot of good information but not much on Limia nigrofasciata.

I have several other books and they have limited information also, nothing in particular on breeding.

Re: Sailfin Genetics(Mollies) [by Slacker1202]

Wed, 06 Feb 2013 21:14:57 -0100

Breeding Livebearers::Sailfin Genetics(Mollies)
roger, sorry, glad you got some good info though