Pseudomale behaviour and spontaneous masculinization in the all-female teleost Poecilia formosa (Teleostei: Poeciliidae)
Please always quote using this URN: urn:nbn:de:bvb:20-opus-61688
- Pseudosexual behaviour is a rare phenomenon associated with unisexuality in vertebrates. In the gynogenetic, all-female teleost Poecilia formosa, rare individuals occur that resemble males of closely related gonochoristic species both in behaviour and external morphology. These masculinized gynogens and normal gynogens are members of the same clone, as demonstrated by DNA-fingerprinting. The behaviour of these masculinized gynogens is described and compared to the behaviour of the gonochoristic species Poecilia mexicana, P. latipinna and theirPseudosexual behaviour is a rare phenomenon associated with unisexuality in vertebrates. In the gynogenetic, all-female teleost Poecilia formosa, rare individuals occur that resemble males of closely related gonochoristic species both in behaviour and external morphology. These masculinized gynogens and normal gynogens are members of the same clone, as demonstrated by DNA-fingerprinting. The behaviour of these masculinized gynogens is described and compared to the behaviour of the gonochoristic species Poecilia mexicana, P. latipinna and their hybrid as weil as androgen-treated individuals of P. formosa. No statistically significant difTerences were found between masculinized gynogens and hormonetreated individuals nor between the gonochoristic P. mexicana and P. latipinna males. Differences exist between gonochoristic and unisexual species. Passihle causes and effects of masculinized gynogens are discussed.…
Author: | Ingo Schlupp, Jakob Parzefall, Jörg T. Epplen, Indrajit Nanda, Michael Schmid, Manfred Schartl |
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URN: | urn:nbn:de:bvb:20-opus-61688 |
Document Type: | Journal article |
Faculties: | Medizinische Fakultät / Theodor-Boveri-Institut für Biowissenschaften |
Language: | English |
Year of Completion: | 1992 |
Source: | In: Behaviour (1992) , 122, 88-104 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
GND Keyword: | Physiologische Chemie |
Release Date: | 2011/12/07 |
Licence (German): | Deutsches Urheberrecht |