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Published Paper: Mating and gonopodium length in livebearering toothcarp, Tobler 2006 |
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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).
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Published Paper: Description of Priapella chamulae sp. n. – a new poeciliid, SCHARTL, M 2006 |
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Description of Priapella chamulae sp. n. – a new poeciliidfish from the upper río Grijalva system, Tabasco, Mexico (Teleostei: Cyprinodontiformes: Poeciliidae)
MANFRED SCHARTL, MANFRED K. MEYER & BRIGITTA WILDE
2006
 Abstract. Priapella chamulae, new species, is described from the tributaries of río Tacotalpa and río Pichucalco, río Grijalva system, Tabasco, Mexico. It is clearly distinguished by metrics, gonopodial and other morphological characteristics from all other species of the genus. A mitochondrial DNA sequence based molecular phylogenetic analysis revealed similar results on the status of the new species as a separate taxon and its relation to the other closest related species.
ROSEN & BAILEY (1963) combined the genus Priapella together with the genera Alfaro, Xiphophorus and Poecilia to constitute the tribus Peociliinae. At that time the genus Poecilia included the genera Lebistes, Limia, Micropoecilia, Mollienesia and Pamphorichthys. According to ROSEN (1979) Xiphophorus is the most closely related genus to Priapella. |
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Bringing Up The Livebearer Babies Gertrude Ryan The Aquarium, June 1950.  A historical article about raising Livebearer Fry. All Graphic, 56K users please be patient. Click "Read More" to continue. |
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What Does THE "Gravid Spot" Mean?
Myron Gordon
The Aquarium, Feb 1950.
A historical article about the livebearer Gravid Spot. All Graphic, 56K users please be patient.
Click "Read More" to continue.
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| TNeal writes " Tom Neal
Seahorses - A Real Challenge
The Seahorse is by far the most unforgettable of all fishes. With a prehensile tail, horse like head and armor plated body, you are very likely to remember the Seahorse for the rest of your life once you have seen it once. "
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