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Misc User Articles: A la pesca. (Gone fishin'.) - Devin Biggs, 2007
User Articles (Misc)

A la pesca. (Gone fishin'.)
Devin Biggs, 2007

This Weblog, the title of which translates roughly as "gone fishin'", describes a series of fishing excursions that I took to streams in the Ayuquila/Armería watershed during a three-week trip to Western Mexico. I was based in the town of Autlán, Jalisco during my visit.

 

Posted by Goodeids on Sunday, December 16 @ 17:24:15 EST (2746 reads)
(Read More... | 1039 bytes more | Misc User Articles | Score: 4.75)
Published Paper: Mating and gonopodium length in livebearering toothcarp, Tobler 2006
General Livebearer Information

 

Coercive mating and gonopodium length in two populations of a livebearering toothcarp (Poecilia mexicana): do cave molly males have shorter gonopodia?

Martin Plath & Michael Tobler
2006


Male livebearering toothcarps (Poeciliidae) ue their gonopodium, a modified anal fin, to transfer sperm bundles (spermatozeugmata) into the female's gonoduct.  There is a wide range of variation in the patterns of male behavior proceeding and accompanying copulations in poeciliid fishes.  Males of some species, such as the guppy (Poecilia reticulata) may court females before they attempt to insert their gonopodium (HOUDE 1997), whereas males of other species never court, and the latter completely rely on coercive mating attempts ("sneak copulations", BISAZZA 1993, Poecilia Mexicana: Plath et al. 2003).

Posted by goodeids on Sunday, June 17 @ 00:14:34 EDT (3013 reads)
(Read More... | 1678 bytes more | Published Paper | Score: 4.5)
Published Paper: Association preference in the Cave molly, Tobler, M. 2006
Livebearer Research Center

Reduction of a visually mediated association preference in the Cave molly (

Michael Tobler(1,2), Heike Burmeister(3), Ingo Schlup (2,3), Martin Plath

Poecilia mexicana, Poeciliidae, Teleostei)

2006

Several studies have reported on the persistence of visually mediated social preferences, such as preferences of females to associate with certain types of males, in an eyed cave fish, the Cave molly (Poecilia mexicana). However, so far most studies have examined preferences which are apparently currently under selection, i.e., the preferences are expressed also in darkness. In this paper we examined female preferences for (1) conspecific females and (2) males without a parasite-induced color change (black spot disease, BSD). In both cases, selection on the persistence of the preference is not apparent. As predicted, surface-dwelling females preferred conspecific over heterospecific females, but this preference was not found in the Cave molly. However, we found no evidence for female preferences relative to BSD-infection of males. We discuss that BSD-resistance probably has a low indicator
value, so that this trait appears to be of minor importance for female mate choice even in surface-dwelling mollies.

 

Posted by goodeids on Thursday, May 31 @ 12:19:30 EDT (3030 reads)
(Read More... | 2535 bytes more | Published Paper | Score: 4.5)
My Trip to the A.L.A. Convention 2007, Kinney, H.
User Articles (Misc)

My Trip to the A.L.A. Convention 2007
By Herb Kinney
          My A.L.A. convention adventure started Friday morning April 29th at about 7:30 A.M. when I started catching and bagging fish to take along.
By 4:00 P. M. Dave Hackenberg arrived to pick my son, Ryan, and I up. For us, it was a short drive (about two hours) with plenty of fish talk. We arrived shortly after 6:00 P.M., checked in, unloaded, and then set up the fish we brought for the show. Unfortunately, I missed the first guest speaker. I was in my room selling and trading fish. I got a nice group of Limia vattata. 

Posted by goodeids on Monday, May 07 @ 23:31:13 EDT (3216 reads)
(Read More... | 6124 bytes more | Score: 5)
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