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Invertebrate genital pore
A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects, have a single common gonopore, except
Gonopore
Parasitic or predatory annelid worms
the male gonopore of one leech being in contact with the female gonopore of the other. The penis passes a spermatophore into the female gonopore and sperm
Leech
Anatomic feature
mouth. C, Okefenokee Swamp, GA (Pfl-2). Single star, male gonopore; double star, female gonopore, three annuli posterior to male. Scale bars, 1.0 mm.
Clitellum
Order of arachnids
place a spermatophore directly on the females' genitals through gonopore-to-gonopore contact, before pushing it into her body with his chelicerae. During
Solifugae
parts communicate with the surface of the body via a single opening called gonopore, which is located on the ventral side of the posterior half of the body
Reproductive system of planarians
Reproductive_system_of_planarians
Biological part involved in sexual reproduction
male structures that are inserted in the female or that hold her near her gonopore during sperm transfer"; female genitalia are defined as "those parts of
Sex_organ
Small eight-legged arthropod
surface by hardened sclerites; sometimes these form transverse ridges. The gonopore (genital opening) is located on the ventral surface between the fourth
Mite
Order of arthropods
underneath the thorax and form a brood chamber for the eggs. In males, the gonopores (genital openings) are on the ventral surface of segment eight and in
Isopoda
Phylum of microscopic animals
intestine. A pair of ducts run from the testis, opening through a single gonopore in front of the anus. Females have a single oviduct opening either just
Tardigrade
Order of arachnids in the arthropod phylum
and the gonopore is located between the fourth pair of legs. In the absence of segmentation, the positioning of the eyes, limbs, and gonopore on the idiosoma
Tick
Species of spider
have a pair of gonopores which the male pedipalp may enter for copulation. When the male inserts his pedipalp into the female's gonopore he will make rhythmic
Misumena_vatia
book lungs open at the edge of this furrow as do the genital openings (gonopores) Epigyne or epigynum (plural epigynes): A hardened plate on the underside
Glossary_of_spider_terms
Crustacean
similar change occurred, independently, with the female gonopores. The movement of the female gonopore to the sternum defines the clade Eubrachyura, and the
Brachyura
Superorder of cephalopod molluscs
forming shells for the eggs. The gonocoel enters the mantle cavity at the gonopore, and in some species, receptacles for storing spermatophores are located
Squid
Phylum of pseudocoelomate invertebrates
sperm duct opens into a gonopore at the posterior end of the animal, which is usually modified to form a penis. The gonopore is homologous to the cloaca
Rotifer
Species of leech
The male gonopore, when withdrawn, appears as nothing more than a hole in between segments eleven and twelve; however, when the male gonopore and its surrounding
Macrobdella_decora
Order of arachnids
species, spiracles are also found upon the tibia of the legs. They have a gonopore on the ventral cephalothorax, and the copulation is direct as male Opiliones
Opiliones
Class of marine arthropods
gonad) reach each femur and open via a gonopore located at coxa 2. The structure and number of the gonopores might differ between sexes (e.g. larger
Sea_spider
Species of sea urchin
cavernosus is characterized by external brood pouches and the enlargement of gonopores in brooding females. Kroh, A. (2010). Abatus cavernosus (Philippi, 1845)
Abatus_cavernosus
Order of sea urchins
start spawning by releasing sperm through the accessory papillae or the gonopores. After roughly 10 minutes, spawning stops, and the sand dollar will cover
Sand_dollar
Phylum of invertebrate animals
opening via a channel called a gonoduct into a common genital opening, the gonopore, which is located on the rear ventral side. Both the gonads and the gonoduct
Onychophora
Genus of annelid worms
to various ducts and to an external gonopore with an eversible penis controlled by a muscular bulb. The gonopore also functions as a receptacle for sperm
Turtle_leech
Physiology of Spiders (order Araneae)
the openings to a pair of book lungs (absent in a few species) and the gonopore (genital opening). Then follows a segment with a second pair of book lungs
Spider_anatomy
Genus of worms
and a small discoid posterior hook base. There are up to 23 festoons. Gonopore is subterminal. The primary host are primates in South America and Felidae
Prosthenorchis
Species of egg-laying Peripatopsid velvet worm
of legs of the female features a longitudinal slit as the gonopore, and the male gonopore is cruciform. Furthermore, accessory teeth are absent from
Ooperipatellus_duwilensis
related to each other and called Nephrozoa). Xenacoelomorphs all have a gonopore to expel gametes but nephrozoans merged it with their anus. Earliest development
Timeline_of_human_evolution
Class of marine invertebrates
non-perforated. Close-up of a cidaroid sea urchin apical disc: the 5 holes are the gonopores, and the central one is the anus ("periproct"). The biggest genital plate
Sea_urchin
Phylum of aquatic invertebrates
gonads, placed between the atrium and stomach, and opening into a single gonopore in the atrium. The eggs are thought to be fertilized in the ovaries. Most
Entoprocta
Phylum of microscopic animals
is sometimes packaged in spermatophores and is released through male gonopores that open, often temporarily, on the underside of the animal, roughly
Gastrotrich
Class of tardigrades
Heterotardigrades have gonoducts that open to the outside through a preanal gonopore, rather than opening into the rectum as in the Eutardigrada. Some orders
Heterotardigrada
Order of insects
while the spermatheca is where sperm is stored. Unlike other insects, the gonopore, or genital opening is behind the seventh abdominal segment. The ovaries
Earwig
Not found in all gastropods. Females have a gonopore that is connected to a seminal receptacle. The gonopore acts as an opening through which eggs are deposited
Reproductive system of gastropods
Reproductive_system_of_gastropods
Class of arthropods
successive moults until reproductive maturity. The genital openings (gonopores) of both sexes are located on the underside of the third body segment
Millipede
Suborder of cricket-like animals
needle-like. The male attaches the spermatophore externally to the female's gonopore. The spermatophore is often surrounded by a proteinaceous spermatophylax
Ensifera
Species of moth
margins of the abdomen. Female gonopores appear as two longitudinal slits on the fourth abdominal segment. Male gonopores appear as two short tubercles
Eacles_imperialis
Species of true bug
Theodore Dru Alison Cockerell in 1893. Ferrisia virgata duct Ferrisia virgata gonopore Ferrisia virgata first and second instar Invasive Species Compendium (2013)
Ferrisia_virgata
Largest class of crustaceans
female genital openings or gonopores are located on the sixth thoracic segment or its appendages, while the male gonopores are on the eighth segment or
Malacostraca
Aquatic insects of the order Ephemeroptera
with the male having two aedeagi (penis-like organs) and the female two gonopores (sexual openings). Mayflies are hemimetabolous (they have "incomplete
Mayfly
Topics referred to by the same term
that is part of the lateral line sensory system of some aquatic organisms Gonopore, a genital pore present in some invertebrates, particularly insects Ozopore
Pore
Extinct genus of scorpion
a bilobed and laterally elongated genital operculum (a covering of the gonopore), followed by pectines (comb-like sensory appendages) with 150–160 narrow
Pulmonoscorpius
Species of annelid
in contact, and sperm is passes by the one acting as male to the female gonopore. Some time later, several eggs are laid by the female, and these are wrapped
Haemopis_sanguisuga
Class of annelids that includes earthworms and leeches
by a modification of several segments, and either includes the female gonopores or is located just behind them. During copulation, this glandular tissue
Clitellata
Marine phylum of animals often with radial symmetries
believed to have had one genital aperture, many organisms have multiple gonopores through which eggs or sperm may be released. Many echinoderms have great
Echinoderm
Species of spider
resemble a kidney in shape. Males have a minute, cone-shaped bulge near the gonopore, which points toward the back. Gamasomorpha gershomi has only been found
Gamasomorpha_gershomi
Species of egg-laying Peripatopsid velvet worm
of the female features a longitudinal slit as the gonopore at the distal end, and the male gonopore is cruciform. Furthermore, accessory teeth are absent
Ooperipatellus_insignis
Species of tardigrade
attached to the body plates. A gonopore (genital pore) occurs at the end of a 4-µm tube, located 7 µm from the anus. The gonopore is oval in the male and a
Parastygarctus_mediterranicus
Genus of flatworms
wide. The pharynx is 0.9 millimetres (0.035 in) long, and along with the gonopore is located in the hindmost third of the body. While it lacks eyes, the
Hausera
Form of jointed appendage of arthropods
on the appendage, the coxa may bear an epipodite, gill (podobranch), or gonopore. The basis is the second segment of the leg. It forms the distal segment
Arthropod_leg
Science of naming, defining and classifying spiders
mesotheles and mygalomorphs, females have only a single genital opening (gonopore), used both for copulation and egg-laying; males have less complex palpal
Spider_taxonomy
Phylum of invertebrates, ribbon worms
gonoducts (ducts from which the ova or sperm are emitted) opening to a gonopore, one per gonad, when the ova and sperm are ready. The eggs are generally
Nemertea
Family of crabs
and located in proximity to the female gonopore. Female gonopores are found on P3 coxae and male gonopores on P5 coxae. There is a variety in shapes
Raninidae
Genus and species of Peripatopsid velvet worm
this species uses a structure on his head to place a spermatophore on the gonopore of the female. The type locality is Mount Warning, New South Wales, Australia
Florelliceps
Genus of basal Peripatopsid velvet worms
genus feature three distal papillae: two anterior and one posterior. The gonopore in the male is cross-shaped but in the female takes the form of a longitudinal
Peripatopsis
πορεύω, πορίζειν (porízein), πόρισμα (pórisma) aporetic, aporia, emporium, gonopore, ozopore, polypore, pore, porism, porismatic porc- pig Latin porcus porcine
List of Greek and Latin roots in English/P–Z
List_of_Greek_and_Latin_roots_in_English/P–Z
Class of crustaceans
[clarification needed] The female gonopores are situated on the protopods of the seventh pair of trunk appendages while the male gonopores are situated on the protopods
Remipedia
Species of starfish
brooding marine invertebrates. Once the eggs are shed through the oral gonopores, the brooding parent spirals its arms around a raised oral disc, under
Henricia_pumila
Extinct genus of euthycarcinoid
second post-abdominal segment is of unclear function, although it may be a gonopore. Apankura is unique among euthycarcinoids due to the reduced anterior pre-abdominal
Apankura
Species of beetle
clearly distinguished due to male pupa having a cylindrical projection ‘gonopore’ on the last ventral sternite, which is absent in female pupa.[citation
Neocalaphodius_moestus
Species of sea urchin
Fertilization is external, the female Dendraster discharges the eggs through her gonopores and they are fertilized by the male, who protrudes his genital papilla
Dendraster_excentricus
Study of the genitalia of butterflies and moths
have an external groove that carries sperm from the copulatory opening (gonopore) to the (ovipore) and are termed Exoporian. Monotrysian : Primitive groups
Lepidoptera_genitalia
Subphylum of arthropods
excluding centipedes. Shared features include reproductive openings (gonopores) behind the second body segment, and sensory hairs (trichobothria) with
Myriapoda
Species of spider
in the genus. The epigyne is marked by two large depressions and has gonopores that are hidden in deep epigynal pockets. Icius olokomei is a jumping
Icius_olokomei
Species of slug
mucus, evert their white translucent mating organs (penises) from their gonopores (openings on the right side of the head), entwine these organs, and exchange
Limax_maximus
Species of freshwater fish
which allows direct stripping of eggs from the body cavity through the gonopore bypassing the oviductal funnels. A spermiating male indicates successful
American_paddlefish
Part of the anatomy of molluscs
space contains the mollusk's gills, anus, osphradium, nephridiopores, and gonopores. The mantle cavity functions as a respiratory chamber in most mollusks
Mantle_(mollusc)
Fictional character in Futurama series
pouch, two stomachs (one saltwater and one freshwater), four hearts, gonopores, and a complex system of internal organs, "most of which are either redundant
Zoidberg
Species of egg-laying Peripatopsid velvet worm
of legs of the female features a longitudinal slit as the gonopore, and the male gonopore is cruciform. Furthermore, accessory teeth are absent from
Ooperipatellus_parvus
Extinct species of Cambrian organism
which part to leave a 60μm gap between the lobopods, thought to be a gonopore and part again near the outer edge of each lobopod, possibly for leg elevator
Tritonychus
Family of flatworms
ducts of the frontal glands, and the copulatory apparatus has a common gonopore for both male and female parts, with the female ducts open rostrally and
Dolichomacrostomidae
Species of spider
pockets. The species shares the sclerotised cup-like areas which hide the gonopores in the epigyne that helps to distinguish Nigorella spiders. The openings
Nigorella_aethiopica
Species of starfish
sexual reproduction, which takes place at the beginning of the summer. The gonopores (genital openings) are located on the upper side, and the observed sex
Aquilonastra_conandae
Part of a pedipalp of a male spider
which produce sperm, are located in the abdomen. Sperm is exuded from the gonopore (genital opening) of the male and deposited on the top surface of a small
Palpal_bulb
Specialized reproductive appendages in arthropods
do not produce sperm directly, but rather gather sperm produced from a gonopore on the base of the third body segment. Gonopods develop gradually during
Gonopod
Species of egg-laying Peripatopsid velvet worm
through 11. The gonopore in the male is cruciform, with the cross dividing the genital pad completely only along the transverse axis. The gonopore in the female
Ooperipatellus_cryptus
Genus of flatworm
before opening at the female gonopore. Small testes and yolk cells are scattered throughout most of the tissue. The male gonopore is at the posterior end,
Australamphilina
Order of free-living flatworms
a single protonephridium. The gonads are unpaired. Unusually, the male gonopore opens on the dorsal surface of the animal, above the pharynx, while the
Catenulida
Genus of flatworms
have a small and robust body, with mouth just behind the mid body and gonopore closer to the mouth than to the posterior end. The mesenchymal longitudinal
Anzoplana
Family of invertebrate animals
Speleoperipatus spelaeus) to 43 pairs (in Plicatoperipatus jamaicensis). The gonopore is always between the penultimate leg pair. There are no known oviparous
Peripatidae
Family of millipedes
that follow. The legs are densely covered with long spines. The female gonopore is a simple vulva without an elongated ovipositor. Males are unknown in
Termitodesmidae
Species of annelid worm
ventral surface, there is a central accessory copulation pore next to the gonopores, but this is absent in young animals. The species is native to India,
Barbronia_weberi
Species of starfish
size and can account for up to 40 percent of the sea star's weight. The gonopores are too small to be seen, and can only be found when the sea stars are
Pisaster_ochraceus
Genus of flatworms
opens to the exterior by a canal and a pore situated behind the common gonopore. Currently, there are 5 species assigned to the genus Diporodemus: Diporodemus
Diporodemus
Species of spider
short brownish-orange legs and a large triangular epigyne with two small gonopores. Langelurillus sibandai is a jumping spider that was first described by
Langelurillus_sibandai
Monotypic species of planktonic crustacean
appendage, albeit in a reduced form. This is the site of the male gonopore (the female's gonopore is on the sixth thoracic appendage). The first pleopod of the
Amphionides
Monospecific genus of remipedes
pilosus is hermaphroditic: the female gonopores are situated on the seventh trunk segment and are small, male gonopores are situated on the fourteenth trunk
Kaloketos
Small, shrimp-like crustacean
tubular in shape. Males have two gonopores in the eighth thoracic segment and a pair of long penises. The female gonopores are in the sixth thoracic segment
Mysida
Species of many-legged arthropod
sperm in receptacles in her mouth. She produces eggs singly through a gonopore on the fourth segment, and transfers them by mouth to a frond of moss or
Scutigerella_immaculata
Species of egg-laying Peripatopsid velvet worm
arranged into 12 complete plicae (transverse ridges) per segment. The gonopore in the male is cruciform, with the transverse slit longer than the longitudinal
Ooperipatellus_nickmayeri
Class of crustaceans
Male ostracods have two penises, corresponding to two genital openings (gonopores) on the female. The individual sperm are often large, and are coiled up
Ostracod
Species of flatworm
is narrow, running above the atrium and posteriorly arching down to the gonopore. No separate vagina is ever differentiated. The shape of the cocoon is
Hymanella_retenuova
Extinct family of animals
that of the cystoids and eocrinoids) fulfilled the functions of anus and gonopore. Furthermore, and unlike many other echinoderms, these animals lacked a
Vetulocystidae
Genus of flatworms
fact that the male copulatory apparatus is located posterior to the male gonopore and is directed anteriorly; it is additionally distinguished via a ruffled
Anocellidus
Subclass of Pterobranchs in the phylum Hemichordata
asymmetrically, and possibly other structures such as the oral lamella and the gonopore. The significance of these discoveries is to understand the early vertebrate
Graptolite
Species of spider
triangular depression in its middle. It has a single copulatory opening and gonopore, one insemination duct and small tube-like spermathecae, or receptacles
Thiratoscirtus_monstrum
Species of true bug
from the eyes by one diameter. The ventral margin is extended over the gonopore and is narrow. The species is similar to Deltocephalus distinctus, a species
Maiestas_vetus
Species of fish
mature females instead have a large bluish-black pigmented area around the gonopore called the gravid spot, unique in the genus. Such chromatic distinction
Limia_melanogaster
Species of damselfly
appendages of its abdomen while the female seeks and absorbs the sperm with its gonopore. He hypothesised that this "wheel" could have evolved in order to prevent
Rambur's_forktail
Description of the physical form of insects
while the spermatheca is where sperm is stored. Unlike other insects, the gonopore, or genital opening is behind the seventh abdominal segment. The ovaries
Insect_morphology
Family of flatworms
Plagiostomidae have an oblong body with the mouth at the anterior end and the gonopore near or at the posterior end. They typically have one or two pairs of eyes
Plagiostomidae
Genus of flatworms
The entire ventral surface of the body is ciliated, and the mouth and gonopore are posteriorly shifted in relation to other land planarians. Regarding
Polycladus
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