Male accessory gland substance: an egg-laying stimulant in Melanoplus sanguinipes (F.) (Orthoptera:Acrididae)

1969 ◽  
Vol 47 (6) ◽  
pp. 1199-1203 ◽  
Author(s):  
R. Pickford ◽  
Al B. Ewen ◽  
C. Gillott
Keyword(s):  
Seminal Vesicle ◽  
Chemical Substance ◽  
Accessory Gland ◽  
Egg Laying ◽  
Melanoplus Sanguinipes ◽  
Male Accessory Gland ◽  
Accessory Glands ◽  
Egg Deposition ◽  
Complete Set ◽  
Per Se

The rate of egg deposition by mature virgin females of the migratory grasshopper, Melanoplus sanguinipes (F.), increased markedly after implantation of accessory glands from mature males. Implants consisting of one-half of a complete set of glands, or of the 10 short hyaline glands alone, were about equally effective in increasing the rate of egg deposition. However, in each case the oviposition rate was less than that of normally mated females of the same age. Implanting only the white glands of the accessory gland complex had a lesser effect on egg-laying and implants of the long hyaline gland or of the seminal vesicle had little or no effect.Our results indicate that the physical act of mating per se or the presence of sperm probably do not provide the primary stimulus to egg-laying. The abdominal location of the implanted accessory gland does, however, suggest that some diffusible chemical substance is responsible for increasing egg deposition in these virgin females.

scholarly journals Effect of Male Accessory Gland Products on Egg Laying in Gastropod Molluscs

10.3791/51698 ◽  
2014 ◽  
Author(s):  
Sander van Iersel ◽  
Elferra M. Swart ◽  
Yumi Nakadera ◽  
Nico M. van Straalen ◽  
Joris M. Koene
Keyword(s):  
Accessory Gland ◽  
Egg Laying ◽  
Male Accessory Gland

THE REPRODUCTIVE ORGANS OF THE VELVET MITE, ALLOTHROMBIUM LEROUXI (TROMBIDIFORMES: TROMBIDIIDAE)

1970 ◽  
Vol 102 (2) ◽  
pp. 144-157 ◽  
Author(s):  
S. N. Mathur ◽  
E. J. LeRoux
Keyword(s):  
Seminal Vesicle ◽  
Ejaculatory Duct ◽  
Reproductive Organs ◽  
Accessory Gland ◽  
Male And Female ◽  
Accessory Glands ◽  
Receptaculum Seminis ◽  
Female Reproductive Organs

AbstractThe anatomy and functions of the male and female reproductive organs of Allothrombium lerouxi Moss are described in detail. In the male, the reproductive organs consist of paired testes, paired vasa diferentia, a median seminal vesicle, a median ejaculatory duct, bursa expulsatoria, a penis, and a median accessory gland; in the female, they consist of paired ovaries, paired oviducts, a median uterus and a vagina. The function of the parts in the male differs from that reported in other species of Trombidiformes, and in females fertilization takes place in the spongy epithelium of the uterus instead of in the oviducts as in oribatids. Females also lack a receptaculum seminis and accessory glands.

scholarly journals Male Accessory Gland Protein Reduces Egg Laying in a Simultaneous Hermaphrodite

PLoS ONE ◽  
2010 ◽  
Vol 5 (4) ◽  
pp. e10117 ◽  
Author(s):  
Joris M. Koene ◽  
Wiebe Sloot ◽  
Kora Montagne-Wajer ◽  
Scott F. Cummins ◽  
Bernard M. Degnan ◽  
...  
Keyword(s):  
Accessory Gland ◽  
Egg Laying ◽  
Simultaneous Hermaphrodite ◽  
Male Accessory Gland ◽  
Accessory Gland Protein

MALE ACCESSORY GLAND FACTORS ELICIT CHANGE FROM ‘VIRGIN’ TO ‘MATED’ BEHAVIOUR IN THE FEMALE CORN EARWORM MOTH HELICOVERPA ZEA

1993 ◽  
Vol 183 (1) ◽  
pp. 61-76 ◽  
Author(s):  
T. G. Kingan ◽  
P. A. Thomas-Laemont ◽  
A. K. Raina
Keyword(s):  
Sex Pheromone ◽  
Helicoverpa Zea ◽  
High Performance ◽  
Accessory Gland ◽  
Corn Earworm ◽  
Male Accessory Gland ◽  
Reverse Phase ◽  
Accessory Glands ◽  
Calling Behaviour ◽  
Chemical Messenger

After mating, the females of many species of moths become depleted of sex pheromone, calling behaviour is terminated, and they become transiently or permanently unreceptive to additional matings. In the corn earworm moth, Helicoverpa zea, we have found that the male accessory gland/duplex is required for evoking the post-mating depletion of sex pheromone but apparently not for the cessation of calling. The latter change requires the receipt of a spermatophore or a chemical messenger derived from non-accessory gland/duplex sources. Desalted extracts of combined accessory glands and duplexes caused a depletion of pheromone in injected females. Proteinaceous components in extracts purified by fractionation in cation-exchange cartridges and by reverse-phase high-performance liquid chromotography retain their pheromonostatic activity. In addition, this fractionated material shuts off calling behaviour and prevents mating in injected females, raising the possibility that redundant mechanisms exist in eliciting the different components of ‘mated’ behaviour.

scholarly journals Specificity and localization of lipolytic activity in adult Drosophila melanogaster

1994 ◽  
Vol 304 (3) ◽  
pp. 775-779 ◽  
Author(s):  
G M Smith ◽  
K Rothwell ◽  
S L Wood ◽  
S J Yeaman ◽  
M Bownes
Keyword(s):  
Drosophila Melanogaster ◽  
Lipase Activity ◽  
Specific Activity ◽  
Lipolytic Activity ◽  
Accessory Gland ◽  
Null Mutant ◽  
Male Accessory Gland ◽  
Accessory Glands ◽  
Esterase 6 ◽  
Adult Drosophila

The triacylglycerol lipases present in adult Drosophila melanogaster have been investigated. Different lipase activities are present in various tissues in the fly. In particular, an abundant lipase activity is present in the male accessory gland. An esterase null mutant was used to confirm that the enzyme activity was due to a distinct lipase and not non-specific activity from esterase 6 which is also abundant in accessory glands. The properties of the accessory-gland lipase were investigated, and pH optima and substrate utilization suggest that it has some similarities to vertebrate bile-salt-stimulated lipase. Lipase activity is significantly reduced in males and increased in females shortly after mating. This finding suggests that lipase activity is transferred to the female and may be important in mating and reproduction in Drosophila.

FUNCTIONS OF THE MALE ACCESSORY GLAND SECRETIONS OF AEDES MOSQUITOES (DIPTERA: CULICIDAE): TRANSPLANTATION STUDIES

1976 ◽  
Vol 108 (9) ◽  
pp. 955-960 ◽  
Author(s):  
S. Ramalingam ◽  
G. B. Craig
Keyword(s):  
Aedes Aegypti ◽  
Secretory Granules ◽  
Accessory Gland ◽  
Anterior Region ◽  
Male Accessory Gland ◽  
Male Accessory Glands ◽  
Accessory Glands ◽  
Aedes Mosquitoes ◽  
Species Specific

AbstractIn Aedes aegypti, the ’matrone’ substance which caused mating inhibition and stimulated oviposition in females, was present in the anterior secretory region of the male accessory glands. In the divided accessory glands of male A. triseriatus, however, it was present in the posterior glands. The posterior gland substance in A. triseriatus was not species specific. It stimulated oviposition in A. aegypti and caused mating inhibition in A. atropalpus. The secretory substance of the posteriormost region in the glands of both species of mosquitoes was mucin in nature. This mucin substance effectively glued the secretory granules of the anterior region(s).

The structure, formation, histochemistry, fate, and functions of the spermatophore of Lytta nuttalli Say (Coleoptera: Meloidae)

1971 ◽  
Vol 49 (12) ◽  
pp. 1595-1610 ◽  
Author(s):  
G. H. Gerber ◽  
N. S. Church ◽  
J. G. Rempel
Keyword(s):  
Tube Wall ◽  
Anterior Part ◽  
Posterior Part ◽  
Accessory Gland ◽  
Male Accessory Gland ◽  
Male And Female ◽  
Male Accessory Glands ◽  
Accessory Glands ◽  
Sequence Of Events ◽  
Probable Form

The spermatophore of Lytta nuttalli consists of a unique tubular structure and a mass of jelly-like material (JLM). The spermatozoa are located in the JLM at its junction with the tube. The tube wall is composed of three layers of "histochemically" different substances produced by the first pair of male accessory glands. The JLM is secreted by the vasa deferentia. During copulation, usually of 8 to 10 h duration, the tube is molded and hardened in the vagina and posterior part of the spermatophoral receptacle duct and the JLM in the anterior part of the duct. The tube of the spermatophore serves as an intromittent "organ" in the absence of an internal penial sac. The sequence of events in spermatophore formation and the roles of the materials from the second and third pairs of male accessory glands are described. After copulation, usually within 2 h, the tube is ejected by the female. Within 24 h after copulation, most of the spermatozoa are transferred to the spermatheca. The secretion of the female accessory gland apparently is involved in this process. The JLM and third male accessory gland materials are retained in the spermatophoral receptacle and apparently are absorbed. The histochemical composition of the male and female secretions and the components of the spermatophore and the cytology and secretory cycles of the glands are described. The spermatophore of L. nuttalli is compared with those of other insects and the probable form of the spermatophore in other Meloidae is considered.

A new species of Myxinidocotyle (Monogenea: Acanthocotylidae: Myxinidocotylinae) from captive sixgill hagfish, Eptatretus hexatrema (Chordata: Myxinidae), with amendment of the subfamily diagnosis

Zootaxa ◽  
2010 ◽  
Vol 2650 (1) ◽  
pp. 47 ◽  
Author(s):  
DAVID B. VAUGHAN ◽  
KEVIN W. CHRISTISON
Keyword(s):  
South Africa ◽  
New Species ◽  
Seminal Vesicle ◽  
Intestinal Caecum ◽  
Accessory Gland ◽  
The Body ◽  
Male Accessory Gland ◽  
Copulatory Tube ◽  
A New Species

Myxinidocotyle eptatreti n. sp. is described from the skin of the sixgill hagfish, Eptatretus hexatrema collected for exhibition at the Two Oceans Aquarium in Cape Town, South Africa. The new species is the first acanthocotylid described from South Africa and differs significantly from the only two known Myxinidocotyle species by the morphology of the sclerotised male copulatory tube and the presence of a diverticulated intestinal caecum. The subfamily diagnosis is amended to include a single seminal receptacle, found within the anterior concave portion of the ovary and excludes the vaginal seminis receptaculum which is considered the seminal vesicle. The vagina travels ventrally over the seminal vesicle and does not fuse with it bilaterally as originally proposed by Malmberg & Fernholm (1989). Myxinidocotyle spp. possess 8 or 9 testes. The proximal male accessory gland reservoirs are connected by an intricate network of fine ducts to the field of extensive male accessory gland cells extending along the length of the body proper. Observations on the locomotion and attachment of live worms in vitro are discussed and the presence of adhesive secretions is confirmed for the haptoral glands and anterior glands.

Oviposition after sex: mated Anastrepha ludens (Diptera: Tephritidae) females increase oviposition without receiving an ejaculate

2021 ◽  
pp. 1-14
Author(s):  
M. Reyes-Hernández ◽  
G. Córdova-García ◽  
F. Díaz-Fleischer ◽  
N. Flores-Estévez ◽  
D. Pérez-Staples
Keyword(s):  
Egg Production ◽  
Ovarian Development ◽  
Fruit Fly ◽  
Accessory Gland ◽  
Egg Laying ◽  
Anastrepha Ludens ◽  
Male Accessory Gland ◽  
Female Behaviour ◽  
External Stimuli

Abstract Mating and receiving ejaculate can alter female insect physiology and postcopulatory behaviour. During mating, females receive both internal and external stimuli and different components in the ejaculate. In insects, these components consist mostly of sperm and male accessory gland secretions. Some of the most important changes associated with receiving male accessory gland secretions are a reduction in female sexual receptivity and an increase in oviposition. However, a clear function for these molecules has not been found in the Mexican fruit fly Anastrepha ludens (Loew) (Diptera: Tephritidae). Here, we tested how the stimulus of mating, receiving a full ejaculate, or only receiving accessory gland secretions can influence ovarian development and oviposition. Our results indicate that the stimulus of mating per se is enough to induce oviposition and increase egg laying in females even if ejaculate is not received, whereas receiving only accessory gland secretions does not increase ovarian development and is not enough to induce oviposition or increase egg production. Further research on the internal and external copulatory courtship of A. ludens will increase our understanding of the role of these secretions in stimulating oviposition independent of ejaculate effects. A biological function for male accessory gland secretions on female behaviour for A. ludens still needs to be found.

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