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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Poecilia: Greek, poikilos = with a lot of colours (Ref. 45335).
More on author: Girard.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce; salobre bentopelágico; no migratorio (Ref. 126106). Subtropical; 27°N - 25°N
North America: lower Nueces River (where possibly introduced) and lower Rio Grande, extreme southern Texas, to Veracruz in Mexico. Introduced populations at San Antonio and San Marcos, Texas.
Tamaño / Peso / Edad
Madurez: Lm ?  range ? - ? cm
Max length : 9.6 cm TL macho / no sexado; (Ref. 5723); common length : 5.5 cm TL macho / no sexado; (Ref. 12193)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 10 - 12. Similar to females of P. latipinna but lacks rows of brown spots on side (may have row of dusky black spots).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Adults are found in backwaters and quiet pools of streams, sloughs, and ditches, usually over mud. This is an all-female species thought to have originated as a result of hybridization between P. latipinna and P. sphenops. Gynogenesis reproduction is triggered by copulation and stimulation by sperm from males of other species in the genus, either P. latipinna, P. mexicana, P. latipunctata, or rarely P. sphenops.
Ciclo vital y comportamiento de apareamiento
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Reproduces gynogenetically (Refs. 8601, 8602, 8605, 5723, 125602), meaning once the sperm has penetrated the egg membrane, it takes no further part in the development of the embryo. Eggs develop following copulation and stimulation by sperm from males of other species in the genus, either P. latipinna, P. mexicana, P. latipunctata, or rarely P. sphenops. Viviparous (Ref. 8601), but there is no nutritional contribution by the mother during embryonic development to compensate for the depletion of stored reserves in the egg as embryos develop (Ref. 8606).
Meyer, M.K. and A.C. Radda, 2000. Notes on the subgenus Mollienesia Lesueur,1821, with a description of a new species of Poecilia Bloch & Schneider, 1801 (Cyprinodontiformes: Poeciliidae) from Venezuela. Ann. Naturhist. Mus. Wien 102B:75-81. (Ref. 42987)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés; Acuario: Comercial
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00551 - 0.03009), b=3.14 (2.96 - 3.32), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 2.5 ±0.3 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (Preliminary K or Fecundity.).
Vulnerabilidad pesquera (Ref.
59153): Low vulnerability (10 of 100).
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