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Hermaphroditism, though rare among mobile animals, is the most common sexual system in plants (see Rennet & Ricklefs, 1995) and appears adaptive for their sessile state.
It is possible to draw such parallels between colonialism and hermaphroditism because both concepts are based on desire and power.
Evidence for protogynous hermaphroditism in the serranid fish Epinephelus drummondhayi (Perciformes: Serranidae) from the Campeche Bank in the southern Gulf of Mexico.
how hermaphrodite and male sexes are determined) are especially important, because 1) androdioecy is an evolutionary transition phase between hermaphroditism and dioecy (Weeks et al.
The revision of the type series revealed the occurrence of an intersex individual; however, this is not sufficient evidence to maintain that this is a transitional stage of an eventual sex change or, even less likely, that the species presents some form of hermaphroditism.
KEY WORDS: Cerastoderma glaucum, gametogenesis, hermaphroditism, reproductive cycle, oocyte size
Abnormalities such as cryptorchidism, hermaphroditism or bifid scrota were not found in either animal, other than penile hypoplasia with a narrowed urethral process.
These organisms show a combination of primitive reproductive features, such as their dependence on water for reproduction and hermaphroditism, together with advanced features such as genitalia with two separate gonadal ducts to avoid self-fertilization, a feature that confers selective advantages to these animals, making them one of the most successful groups of mollusks (Morton, 1955a, b).
His topics include cytogenetics and sex chromosomes, gynogenesis and consequences, triploidy and sterility, allogenesis and xenogenesis, sex change and hermaphroditism, and genetic sex determination.
can be responsible for hermaphroditism in Liza ramada (Bayhan and Acarli, 2006).
Male frogs exposed to minute doses of atrazine can develop female sex characteristics, including hermaphroditism and the presence of eggs in the testes.