Reproductive behavior of the guinea pig. I. The normal mating behavior.

1927 ◽  
Vol 7 (3) ◽  
pp. 247-263 ◽  
Author(s):  
C. M. Louttit
Keyword(s):  
Guinea Pig ◽  
Mating Behavior ◽  
Reproductive Behavior

Cyclic reproductive behavior in the female guinea pig.

1935 ◽  
Vol 19 (2) ◽  
pp. 313-335 ◽  
Author(s):  
William C. Young ◽  
Edward W. Dempsey ◽  
Hugh I. Myers
Keyword(s):  
Guinea Pig ◽  
Reproductive Behavior

scholarly journals Testosterone Programs Adult Social Behavior before and during, But Not after, Adolescence

Endocrinology ◽  
2009 ◽  
Vol 150 (8) ◽  
pp. 3690-3698 ◽  
Author(s):  
Kalynn M. Schulz ◽  
Julia L. Zehr ◽  
Kaliris Y. Salas-Ramirez ◽  
Cheryl L. Sisk
Keyword(s):  
Social Behavior ◽  
Mating Behavior ◽  
Reproductive Behavior ◽  
Neural Circuit ◽  
Pubertal Development ◽  
Ventromedial Hypothalamus ◽  
Gonadal Hormones ◽  
Medial Amygdala ◽  
Steroid Dependent ◽  
Juvenile Males

Whereas the adolescent brain is a major target for gonadal hormones, our understanding of hormonal influences on adolescent neural and behavioral development remains limited. These experiments investigated how variations in the timing of testosterone (T) exposure, relative to adolescence, alters the strength of steroid-sensitive neural circuits underlying social behavior in male Syrian hamsters. Experiment 1 simulated early, on-time, and late pubertal development by gonadectomizing males on postnatal d 10 and treating with SILASTIC brand T implants for 19 d before, during, or after adolescence. T treatment before or during, but not after, adolescence facilitated mating behavior in adulthood. In addition, preadolescent T treatments most effectively increased mating behavior overall, indicating that the timing of exposure to pubertal hormones contributes to individual differences in adult behavior. Experiment 2 examined the effects of preadolescent T treatment on behavior and brain regional volumes within the mating neural circuit of juvenile males (i.e. still preadolescent). Although preadolescent T treatment did not induce reproductive behavior in juvenile males, it did increase volumes of the bed nucleus of the stria terminalis, sexually dimorphic nucleus, posterodorsal medial amygdala, and posteroventral medial amygdala to adult-typical size. In contrast, juvenile anterodorsal medial amygdala and ventromedial hypothalamus volumes were not changed by preadolescent T treatment yet differed significantly in volume from adult controls, suggesting that further maturation of these brain regions during adolescence is required for the expression of male reproductive behavior. Thus, adolescent maturation of social behavior may involve both steroid-independent and -dependent processes, and adolescence marks the end of a postnatal period of sensitivity to steroid-dependent organization of the brain.

Development and Reproductive Behavior of Mantispa viridis Walker (Neuroptera: Mantispidae)

1995 ◽  
Vol 30 (1) ◽  
pp. 99-111 ◽  
Author(s):  
Jeffrey R. Brushwein ◽  
Joseph D. Culin ◽  
Kevin M. Hoffman
Keyword(s):  
South Carolina ◽  
Mating Behavior ◽  
Reproductive Behavior ◽  
Developmental Stages ◽  
Adult Emergence ◽  
Developmental Time ◽  
Adult Longevity ◽  
Black Widow ◽  
Latrodectus Mactans

The development and reproductive behavior of Mantispa viridis Walker was examined in northwestern South Carolina. Campodeiform first instars actively searched spider egg sacs and halted the development of spider eggs that had advanced to the prelarval or larval developmental stages. M. viridis utilized both viable and inviable spider eggs and completed development on as few as five black widow, Latrodectus mactans (F.), eggs. Developmental time from eclosion to adult emergence averaged slightly less than 24 d. Both mated and unmated females produced egg clutches. However, viable clutches were only produced by mated females. Mated females produced a greater number of clutches each containing more eggs than unmated females. Unmated females produced a small number of eggs that embryonated, and in which a mantispid larva developed. However, larvae in these eggs did not eclose. Males were found to have the intertergal membranes between abdominal segments 3 and 4, and 4 and 5 expanded. These membranes were everted during courtship and apparently emitted a mating or recognition pheromone. Mating behavior and adult longevity are also described.

scholarly journals An Evolutionarily Conserved Form of Gonadotropin-Releasing Hormone Coordinates Energy and Reproductive Behavior

Endocrinology ◽  
2003 ◽  
Vol 144 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Jennifer L. Temple ◽  
Robert P. Millar ◽  
Emilie F. Rissman
Keyword(s):  
Mating Behavior ◽  
Reproductive Behavior ◽  
Mammalian Brain ◽  
Type Ii ◽  
Suncus Murinus ◽  
Musk Shrew ◽  
Neuronal Populations ◽  
Energetic Condition ◽  
Evolutionarily Conserved

Abstract GnRH is the master neuropeptide that coordinates and regulates reproduction in all vertebrates and in some nonvertebrate species. Sixteen forms of GnRH have been isolated in brain. In the vast majority of species, two or more forms occur in anatomically and developmental distinct neuronal populations. In mammalian brain, two GnRH forms, mammalian (GnRH-I) and chicken-II (GnRH-II), exist. The distribution and functions of GnRH-I have been well characterized and intensively studied. However, the function of GnRH-II, which is the most evolutionarily conserved form of GnRH, has been elusive. Here we demonstrate that in a primitive mammal, the musk shrew (Suncus murinus), GnRH-II activates mating behavior in nutritionally challenged females within a few minutes after administration. In addition GnRH-II immunoreactive cell numbers and fibers increase in food-restricted females. Furthermore, GnRH type II receptor immunoreactivity was detected in musk shrew brain in regions associated with mating behavior. Our results lead us to hypothesize that the role of the evolutionarily conserved GnRH-II peptide is to coordinate reproductive behavior as appropriate to the organism’s energetic condition.

scholarly journals Mating behavior of Patagonian octopus (Octopus tehuelchus) under laboratory conditions

2020 ◽  
Vol 33 (1) ◽  
pp. 115-120 ◽  
Author(s):  
Mercedes Berrueta ◽  
Julián A. Desiderio ◽  
Florencia Agliano ◽  
Andrea Victoria López ◽  
Eddie O. Aristizabal Abud ◽  
...  
Keyword(s):  
Sexual Intercourse ◽  
Mating Behavior ◽  
Reproductive Behavior ◽  
Artisanal Fishery ◽  
Male And Female ◽  
Northern Area ◽  
Laboratory Conditions ◽  
In Captivity ◽  
Patagonian Coast ◽  
Aquaculture Development

Patagonian octopus (Octopus tehuelchus) is a species that holds an artisanal fishery in the northern area of the Argentine Patagonian coast and has a potential for aquaculture development. This work aimed to characterize the mating behavior of four pairs of Patagonian octopuses under laboratory conditions. Results showed that this species has a complex reproductive behavior. Remarkably, female remained inside her shelter during pre-copula, copulation and intercourse events. Male and female faced by the oral face during sexual intercourse, which lasted 3 to 5 min. The observations will contribute to the better management of the reproductive specimens of the species in captivity.

Life history, mating behavior, and courtship songs of the endemic Hawaiian Anomalochrysa maclachlani (Neuroptera: Chrysopidae)

1990 ◽  
Vol 68 (5) ◽  
pp. 1020-1026 ◽  
Author(s):  
Maurice J. Tauber ◽  
Catherine A. Tauber ◽  
Ronald R. Hoy ◽  
Paul J. Tauber
Keyword(s):  
Sexual Selection ◽  
Life History ◽  
Mating Behavior ◽  
Reproductive Behavior ◽  
Parallel Evolution ◽  
Preoviposition Period ◽  
Green Lacewings ◽  
Courtship Songs ◽  
Diverse Groups

Although Anomalochrysa maclachlani shares many aspects of its life history and reproductive behavior with other green lacewings, it is atypical in several respects. (i) The preoviposition period is long, and it remains constant at temperatures from 21 through 26.7 °C. (ii) Fertility, which was 100% at 23.4 °C or lower, drops to 16.6% at 26.7 °C. (iii) Females oviposit clusters of about 25 unstalked eggs every 1–7 days, (iv) Both sexes produce loud clicking sounds during courtship; clicking frequently occurs in duet and is associated with anterior-directed flicks of the wings, (v) Females and males may mate repeatedly within several hours. The unusual features of A. maclachlani's reproductive behavior suggest a mode of sexual selection different from that in other chrysopids. Its loud courtship songs and those of other Hawaiian insects (Drosophila, crickets, plant hoppers) represent striking cases of parallel evolution among diverse groups of endemic fauna.

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