prezygotic

[pre″zi-got´ik]

occurring before completion of fertilization.

prezygotic

(prē-zī-gŏt′ĭk) [″ + zygotos, yoked]

Happening prior to fertilization of the ovum.

Mentioned in ?

meiosis

References in periodicals archive ?

We suggest that experimental hybrid crosses are to be conducted for analysis of possible prezygotic and postzygotic barriers installed in the Panstrongylus and Nesotriatoma genus.

New evidence of the evolutionary relationship of the flavida complex with the genus Panstrongylus (Hemiptera, Triatominae) by karyosystematic

Studies on prezygotic and postzygotic isolation carried out in Colombia have shown partial assortative mating since corn strain females do not mate with rice strain males (Saldamando-Benjumea et al.

Reproductive incompatibility and fitness components in Neoleucinodes elegantalis races (Lepidoptera, Crambidae) from three Solanaceae hosts/Incompatibilidad reproductiva y componentes de la eficacia biologica en razas de Neoleucinodes elegantalis (Lepidoptera, Crambidae) provenientes de tres hospederos de Solanaceae

Classic studies of plants on mine tailings in Europe (Antonovics, 2006 and references therein) clearly demonstrated that rapid and repeated evolution of metal tolerance is often associated with the evolution of prezygotic isolating mechanisms, including the evolution of both self-compatibility (Mousset et al, 2016 and references therein) and earlier flowering in metal-tolerant populations (Antonovics, 2006 and references therein).

Lessons on Evolution from the Study of Edaphic Specialization

Natural history and behavioral insights divide reproductive barriers into prezygotic and postzygotic isolating factors [2].

Occurrence of Interspecific Mating between Two Species of Danaus Kluk, 1780 (Lepidoptera: Nymphalidae) in Nature

Weak prezygotic isolating mechanisms in threatened Caribbean Acropora corals.

Interspecific Variation in Coral Settlement and Fertilization Success in Response to Hydrogen Peroxide Exposure

An apparent lack of prezygotic reproductive isolation among 42 sympatric species of Bromeliaceae in Southeastern Brazil.

LA FRAGMENTACION DEL BOSQUE DE NIEBLA Y SU EFECTO EN LA COMUNIDAD DE ORQUIDEAS (Orchidaceae)

Therefore, in populations in which both diploid and tetraploid cytotypes occur, or in areas in which diploid and tetraploid populations are in relatively close proximity, selection to reduce the frequency of intercytotype crosses may result in character displacement for traits that influence the likelihood such crosses occur, i.e., prezygotic isolation.

The reproductive ecology of diploid and tetraploid galax urceolata

Absence of a prezygotic behavioural barrier to gene flow between the two sympatric morphs of the squat lobster Munida gregaria (Fabricius, 1793) (Decapoda: Anomura: Galatheidae).

Variacion fenotipica de la langosta espinosa Panulirus argus (Decapoda: Paniluridae) en el Caribe Suroccidental

Postcopulatory, prezygotic isolation in flour beetles.

Genetic Relationships Between Tribolium castaneum and T. confusum Based on Mitochondrial DNA Sequences

(2011a) suggested that a prezygotic explanation is more likely owing to the lack of hybrid individuals and strong Wahlund effect in areas of sympatry.

A new species of Sebastes (Scorpaeniformes: Sebastidae) from the northeastern Pacific, with a redescription of the blue rockfish, S. mystinus (Jordan and Gilbert, 1881)

This process occurs due to differences in the acrosome and/or flagellum which produce prezygotic incompatibility (between sperms and eggs), because there are receptors located in these structures that are used for fertilization in some marine invertebrates, especially those with external fertilization (Pitnick et al., 2009).

Diferencias en la ultraestructura espermatica entre Mytilus chilensis y Mytilus galloprovincialis (Bivalvia, Mytilidae): ?Se puede utilizar como un caracter taxonomico?

Prezygotic barriers resulting from pollenpistil incompatibility, where pollen grain germination and pollen tube growth of one species is inhibited by the stigma of another species (BURSON & YOUNG, 1983) are quite common.