Gonochorism

(redirected from Gonochoric)
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Gon`o`cho´rism


n.1.Separation of the sexes in different individuals; - opposed to hermaphroditism.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
For instance, in the genus Thor, a clade that includes 12 species worldwide (De Grave et al., 2009), two species have been confirmed as gonochoric (T.
Sexual system, sex ratio, and group living in the shrimp thor amboinensis (De Man): relevance to resource-monopolization and Sex-allocation theories
edule is a gonochoric species and, although hermaphrodites or even sex reversals have been found occasionally (Kingston 1974, Fernandez Castro et al.
Reproductive cycle of the cockle Cerastoderma edule (linnaeus 1758) in the Ria de Vigo (Galicia, Northwest Spain)
Alternatively, gonochoric zooids are known to occur in certain species (e.g., Dyrynda and Ryland, 1982; Hughes and Hughes, 1986).
Effects of selling on offspring survival and reproduction in a colonial simultaneous hermaphrodite (Bugula stolonifera, Bryozoa)
Results from different lines of investigation indicate that determining gender is essential in gonad determination either in gonochoric or hermaphrodite species, but fewer studies have been done on the mechanisms of sex ratio variations in pearl oysters.
Determination of gender in the pearl oyster Pinctada margaritifera
In brief, colonies are gonochoric. Females release eggs during predictable spawning events that on San Salvador, Bahamas, occur in November and December, usually during the week following the new moon.
High fertilization success in a surface-brooding Caribbean gorgonian
Some exhibit hermaphroditism, but the majority are gonochoric, whereas some display sex reversal under certain conditions (Pouvreau & Gangnery 2000).
Molecular cloning and expression characterization of Dmrt2 in akoya pearl oysters, Pinctada martensii
The gonochoric, free-spawning mode of reproduction seen in C.
Reproduction and larval morphology of broadcasting and viviparous species in the Cryptasterina species complex
irus is gonochoric. In January, most clams were in the resting phase, although a small number of females showed small oogonia on their follicular epithelium.
First report on the annual gametogenesis of Heteromacoma irus (Hanley, 1845) in a rocky intertidal area, northern Jeju Island, Korea
Methanoaricia dendrobranchiata is a gonochoric species, but the sexes cannot be distinguished externally.
Spermiogenesis and modified sperm morphology in the "seepworm" Methanoaricia dendrobranchiata (polychaeta: orbiniidae) from a methane seep environment in the Gulf of Mexico: implications for fertilization biology
According to that study, this species is gonochoric and, unlike in other bivalves, spawning takes place during times of low food availability.
The fate of Spondylus stocks (Bivalvia: Spondylidae) in Ecuador: is recovery likely?
The intertidal snail Littorina obtusata is gonochoric. Females lay benthic egg masses containing 50-150 eggs (Bandel, 1974) in which embryos undergo direct development and emerge as crawling juveniles.
Multiple Paternity in Littorina obtusata (Gastropoda, Littorinidae) Revealed by Microsatellite Analyses
It is gonochoric with internal fertilization and direct embryonic development, with the presence of nurse eggs in the egg capsule as supplementary food (Penchaszadeh 1976).
Reproductive seasonality and oviposition induction in Trophon geversianus (gastropoda: muricidae) from Golfo Nuevo, Argentina
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