Eleven geographically close congeners are treated in some detail, and a key is. Poecilia orri is a viviparous fish that reproduces all around the year, it matures at about 5 cm in sl, living in colonies of 1. The impact of social context on male mate preference in a. The amazon molly reproduces clonally via spermdependent parthenogenesis gynogenesis, in which the sperm of closely related species triggers embryogenesis of the apomictic oocytes, but typically does. What links here related changes upload file special pages permanent link page. Test fish came from large, randomly out bred stocks. The cueva del azufre in tabasco, mexico, is a nutrientrich cave and its inhabitants need to cope with high levels of dissolved hydrogen sulfide and extreme hypoxia.
The common name for this fish is the shortfin molly, probably in reference to the fact that males do not have extended dorsal fins. The shortfin molly poecilia mexicana details articles. Poecilia mexicana is rather variable in its morphometric features. Poecilia mexicana is the recent female parent of the. Genus poecilia speckled or spotted speciesmexicana country of mexico. Poecilia mexicana, commonly known as the shortfin molly or atlantic molly, is a species of. The gonadal transcriptome of the unisexual amazon molly poecilia. Poecilia mexicana, as live bait for poleand line skipjack fishing. Previous studies have described this species as an abundant, large sized molly with a pale yellow coloration and a dark blotch at the base of the caudal fin. Clonal polymorphism and high heterozygosity in the. The shortfin molly poecilia mexicana life with livebearers author. Population structure, habitat use, and diet of giant. Pdf subterranean fishes of mexico poecilia mexicana.
It has proven to be one of our most popular short finned mollies. However, no detailed quantification of the extent of this threat is available. One population is found in caves and known as the cave molly. Male mating behavior and costs of sexual harassment for. Sailfin and shortfin clades are indicated, and unicuspid and tricuspid dentition types are shown with drawings based on those from schultz and miller 1971. The buckets used on the tainui each contained about 1 kg of fish, those used on the hatsutori maru.
Pdf cave molly females poecilia mexicana, poeciliidae. Phylogeny and biogeography of poecilia cyprinodontiformes. Inner ear morphology in the atlantic molly poecilia. The cave form of a mexican livebearing fish, the socalled cave molly poecilia mexicana. Social network analysis resolves temporal dynamics of male. Elucidating the genomic basis of adaptation and speciation is a major challenge in natural systems with large quantities of environmental and phenotypic data, mostly because of the scarcity of genomic resources for nonmodel organisms. Using the livebearing atlantic molly poecilia mexicana, a species with pronounced male size polymorphism, we investigated social network dynamics of mixed sex experimental groups consisting of eight females and three differentsized males over a period of 5 days. Poecilia mexicana is the recent female parent of the unisexual.
Chapter 5 geographic variation in poecilia bloch and schneider. There is a file report indicating that this species was collected in july 1984 in kelly warm springs, teton. Inner ear morphology, however, has not yet been investigated in detail in any member of the diverse order cyprinodontiformes. A new and morphologically distinct population of cavernicolous. The amazon molly poecilia formosa is an excellent system to explore this question. This may be an adaptation to reduce sperm competition risk, which arises because commonly preferred female phenotypes will receive attention also from surrounding males, andor. The amazon molly reproduces clonally via spermdependent parthenogenesis gynogenesis, in which the sperm of closely related species triggers embryogenesis of the apomictic oocytes, but typically does not.
This may be an adaptation to reduce sperm competition risk, which arises because commonly preferred female phenotypes will receive attention also from surrounding males, andor because other males can copy the. Beside natural selection, sexual selection via phenotypeassortative mating is thought to promote reproductive isolation. Poecilia mexicana is een tropische tandkarper uit het geslacht poecilia. All structured data from the file and property namespaces is available under the creative commons cc0 license. Audience effects in the atlantic molly poecilia mexicana. Maciolek 1984 and devick 1991b reported this species from oahu, hawaii. Inner ear morphology in the atlantic molly poecilia mexicana. Both the suprageneric and infrageneric taxonomy of poecilia bloch and schneider, 1801. Clonal polymorphism and high heterozygosity in the celibate. Background fishes show an amazing diversity in hearing abilities, inner ear structures, and otolith morphology. Poecilia mexicana erss us fish and wildlife service.
Multidirectional interactions in social networks can have a profound effect on mate choice behavior. Poecilia mexicana is the recent female parent of the unisexual fish p. One of the successful colonizers of this cave is the poeciliid fish poecilia mexicana, which has received considerable attention as a model organism to examine evolutionary adaptations to extreme environmental conditions. There is a file report indicating that this species was collected in july. You will be redirected to the full text document in the repository in a few seconds, if not click here. We got this wild molly species in june 2009 from dr. Peering through the looking glass at a sexual parasite. Poecilia formosa is an internally fertilizing ovoviviparous. Files are available under licenses specified on their description page.
Here we quantify genomic decay in this fish by using a simple. From the amazonriver to the amazon molly and back again poeser. This work was funded by the natural sciences and engineering research council nserc of canada and approved by the uacc of simon fraser university protocol. Poecilia mexicana, campeche, a wild shortfin molly, is a north american livebearer related to and in the same genus, poecilia, as the guppy and other mollies. Quantifying the threat of extinction from mullers ratchet in. Morehouse, and martin plath department of zoology, oklahoma state university, 501 life sciences west, stillwater, ok 74078 mt, rld. Pdf the atlantic molly poecilia mexicana is a widespread freshwater fish living along the atlantic coast of mexico and central america. Poecilia mexicana operational taxonomic units otu identified by alda et al. Previous studies revealed that females of a cave form of the livebearing fish poecilia mexicana cave molly have maintained the ancestral visual preference for large males, but as an adaptation to life in darkness they have evolved the. The unisexual amazon molly poecilia formosa originated from a hybridization between two sexual species, the sailfin molly poecilia latipinna and the atlantic molly poecilia mexicana. Genomic resources for a model in adaptation and speciation. Pdf some ecology features of poecilia mexicana steindachner.
The atlantic molly, poecilia mexicana, is a widespread freshwater fish, living along the atlantic coastal drainages of mexico, and it exhibits wide habitat tolerances. The atlantic molly poecilia mexicana, poeciliidae is a small livebearing fish that has been extensively studied in evolutionary ecology research, particularly. Poecilia mexicana campeche is a livebearing poecilid molly found in mexico, belize, costa rica, honduras and possibly panama. Poecilia mexicana, commonly known as the shortfin molly or atlantic molly, is a species of poeciliid fish native to fresh and brackish water in mexico and guatemala. Ecological speciation assumes reproductive isolation to be the product of ecologically based divergent selection. Results the inner ear of poecilia mexicana displays a combination of several remarkable features. Using the neotropical fish poecilia mexicana from a system that has been described to undergo incipient ecological speciation in adjacent, but. Dec 24, 2014 we recently processed our poecilia mexicana, campeche. Male, poecilia mexicana campeche is a very pretty fish with nice greenblackblue speckling on the side and a notable yellow edge on the caudal fin. Subterranean fishes of mexico poecilia mexicana, poeciliidae. Mullet mugil cephalus amaama sailfin molly poecilia latipinna shortfin molly poecilia mexicana tilapia oreochromis mossambicus tilapia tilapia zillii western mosquitofish gambusia affinis ia makika invertebrates, aquatic anchialine snapping shrimp metabetaeus lohena asian clam corbicula fluminea.
Quantifying the threat of extinction from mullers ratchet. Using the neotropical fish poecilia mexicana from a system that has been described to undergo incipient ecological speciation in adjacent, but ecologically. We, therefore, studied the inner ear of the cyprinodontiform freshwater fish poecilia mexicana by analyzing the position of otoliths in situ, investigating the 3d structure of sensory epithelia, and examining the orientation patterns of ciliary bundles of the sensory hair cells, while combining. The atlantic molly poecilia mexicana, poeciliidae is a small livebearing fish that has been extensively studied for evolutionary ecology research, particularly because this species has repeatedly colonized extreme environments in the form of caves and toxic hydrogen sulfide containing springs. Poecilia mexicana campeche chicago livebearer society. Media in category poecilia mexicana the following 3 files are in this category, out of 3 total. All structured data from the file and property namespaces is available under the. Poecilia formosa is a gynogenetic, unisexual allfemale molly of hybrid origin between sailfin p. These authors noted the priority of poecilia and relegated mollienesia to the synonymy of the former genus.
Cave molly females poecilia mexicana, poeciliidae, teleostei like wellfed males article pdf available in behavioral ecology and sociobiology 582. Poecilia formosa arose from a hybridization event between an atlantic molly poecilia mexicana steindachner 1863 and p. All assemblies are available at genbank under the following accession numbers. Pdf the shortfin molly poecilia mexicana steindachner, 1863, has a wide distribution in southeastern mexico where it inhabits rivers and coastal. This page was last edited on 9 december 2014, at 03. The fish used in this study were descendants of animals collected in a coastal brackish lagoon near tampico in central mexico. There is some doubt concerning the positive identification of this. The amazon molly poecilia formosa is a small unisexual fish that has been suspected of being threatened by extinction from the stochastic accumulation of slightly deleterious mutations that is caused by mullers ratchet in nonrecombining populations. We, therefore, studied the inner ear of the cyprinodontiform freshwater fish poecilia mexicana by analyzing the position of otoliths in situ, investigating. The spermatozoa from a related species stimulate egg development but do not contribute any genetic material meffe and snelson 1989. Wild fish exhibit variable patterning and colouration, however in captivity mollies readily interbreed and many ornamental fishes are hybrids of different poecilia species including p.
Females are rather mundane in appearance, but are robust, strong swimming fish. The gonadal transcriptome of the unisexual amazon molly. Dietary niche overlap in sympatric asexual and sexual. Female choice for large body size in the cave molly. Poecilia orri feeds on microalgae, small crustaceans, and insects schmittersoto, 1998. Poecilia hondurensis, new species, differs from all congeners in the combination of having tricuspid teeth on the inner of both jaws and lacking a prominent spine or hook on the gonopodium. Pdf subterranean fishes of mexico poecilia mexicana, poeciliidae. Koi, trends in exvessel value and size composi tion of annual landings of brown, pink, and white shrimp from the gulfand south atlantic. Despite the lack of physical barriers, each habitat type harbors a distinct morphotype of p. Male mating behavior and costs of sexual harassment for females in cavernicolous and extremophile populations of atlantic mollies poecilia mexicana published on 01 jan 2008 by brill. Nov 21, 2012 elucidating the genomic basis of adaptation and speciation is a major challenge in natural systems with large quantities of environmental and phenotypic data, mostly because of the scarcity of genomic resources for nonmodel organisms. A new species of poecilia from the atlantic slopes of honduras is described and assigned to the subgenus mollienesia. Schooling behaviour in populationhybrids of astyanax fasciatus and poecilia mexicana pisces, characidae and poeciliidae. We recently processed our poecilia mexicana, campeche.
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