scholarly journals Additional Notes on the Reproduction of the Formosan Grass Lizard, Takydromus formosanus (Boulenger, 1894) (Squamata: Lacertidae), from Southwestern Taiwan

2016 ◽  
Vol 23 (1) ◽  
pp. 28-31
Author(s):  
Gerrut Norval ◽  
Jean-Jay Mao ◽  
Stephen R. Goldberg ◽  
Shao-Chang Huang
Keyword(s):  
Histological Examination ◽  
Reproductive Biology ◽  
Reproductive Cycle ◽  
Ad Hoc ◽  
Areca Catechu ◽  
Southwestern Taiwan ◽  
Female Reproductive Cycle

We collected 13 (male = 2; female = 10; juvenile = 1) Takydromus formosanus on an ad hoc basis from a Betelnut Palm (Areca catechu) plantation in Santzepu, Sheishan District, Chiayi County, as part of a herpetofaunal survey of the area. The smallest reproductively active female had a snout-vent length (SVL) of 44mm, and the smallest male with an enlarged tail base had a SVL of 41 mm. A histological examination and oviposition indicated that the female reproductive cycle commences in April and lasts until at least June. We recorded no clutch sizes greater than two eggs. Takydromus formosanus is a poorly studied species, and many aspects of the reproductive biology of this species merit further research.

Reproductive biology ofPhilodryas patagoniensis(Snakes: Dipsadidae) in south Brazil: Female reproductive cycle

2017 ◽  
Vol 99 (2) ◽  
pp. 105-114 ◽  
Author(s):  
Luiza Loebens ◽  
Claudio Augusto Rojas ◽  
Selma Maria Almeida-Santos ◽  
Sonia Zanini Cechin
Keyword(s):  
Reproductive Biology ◽  
Reproductive Cycle ◽  
South Brazil ◽  
Female Reproductive Cycle

Reproduction and the Female Reproductive Cycle of Nyctophilus geoffroyi and N. major (Chiroptera: Vespertilionidae) from South-western Australia

1997 ◽  
Vol 45 (5) ◽  
pp. 489 ◽  
Author(s):  
D. J. Hosken
Keyword(s):  
Histological Examination ◽  
Reproductive Cycle ◽  
Western Australia ◽  
Reproductive Cycles ◽  
Reproductive Events ◽  
Vespertilionid Bats ◽  
Female Reproductive Cycle

The reproductive cycles of female Nyctophilus geoffroyi and N. major from south-western Australia are described from capture records and histological examination of tissue from fixed specimens. The sequence of reproductive events for both species was similar to that described for other vespertilionid bats from south- western Australia. Mating commenced between March and May. Sperm were stored in the caudal isthmus of the oviduct and in endometrial glands near the utero-tubal junction. Ovulation and fertilisation occurred in late August or September and twinning was common. Parturition occurred between late October and November, with volant young first captured during December, but it appeared not all N. geoffroyi females were reproductively active every year. Lactation had generally ceased by February, which was when the last detectably juvenile bats were captured.

scholarly journals Distribution and reproductive biology of the Electric ray Discopyge tschudii Heckel, 1846 in San Matías Gulf, Northern Patagonia, Argentina

2011 ◽  
Vol 9 (4) ◽  
pp. 831-838 ◽  
Author(s):  
Marilú Estalles ◽  
Nidia Marina Coller ◽  
Edgardo Ernesto Di Giácomo ◽  
María Raquel Perier
Keyword(s):  
Sexual Dimorphism ◽  
Reproductive Biology ◽  
Reproductive Cycle ◽  
Southern Chile ◽  
Southern Brazil ◽  
Southwest Atlantic ◽  
Aggregate Distribution ◽  
Northern Patagonia ◽  
Southeast Pacific ◽  
Discopyge Tschudii

The Electric ray Discopyge tschudii is distributed in the Southwest Atlantic from southern Brazil to southern Argentina and in the Southeast Pacific from Peru to southern Chile. The main threat to this species is fishing. Discopyge tschudii is noncommercial and individuals caught are discarded on board. The present study analyzes the distribution and the morphological and reproductive characteristics of this ray in San Matías Gulf (SMG), Argentina. A total of 1087 individuals were analyzed. The species presented an aggregate distribution, with the main concentrations in the northern and eastern areas of SMG, at depths below 100 m. Males ranged from 9 to 43 cm and females from 11 to 38 cm. The species presented sexual dimorphism. Males were larger and heavier than females and also matured at larger sizes. Size at 50% of maturity was estimated at 30 cm for males and 21 cm for females. A total of 199 embryos were sampled and the proportion of sexes showed no significant differences from the expected 1:1. The number of embryos per female varied from 1 to 12. The most frequent values were 2 and 5. Length at birth was estimated at 82.17 ± 3.87 mm. Based on our findings, we hypothesize that the electric ray D. tschudii completes its reproductive cycle in SMG.

The Female Reproductive Cycle of the Indian Monitor Lizard, Varanus monitor

Copeia ◽  
1976 ◽  
Vol 1976 (2) ◽  
pp. 256 ◽  
Author(s):  
Dennis Jacob ◽  
L. S. Ramaswami
Keyword(s):  
Reproductive Cycle ◽  
Monitor Lizard ◽  
Female Reproductive Cycle

A POSSIBLE MECHANISM FOR THE REGULATION OF THE FEMALE REPRODUCTIVE CYCLE IN TENEBRIO MOLITOR (COLEOPTERA: TENEBRIONIDAE)

1967 ◽  
Vol 99 (12) ◽  
pp. 1298-1303 ◽  
Author(s):  
G. H. Gerber
Keyword(s):  
Reproductive Cycle ◽  
Nerve Cord ◽  
Ventral Nerve Cord ◽  
Tenebrio Molitor ◽  
Inhibitory Factor ◽  
Inhibitory Mechanism ◽  
Sequence Of Events ◽  
Coleoptera Tenebrionidae ◽  
Nerve Cords ◽  
Female Reproductive Cycle

AbstractVentral nerve cord severence in newly emerged females of Tenebrio molitor L. resulted in a rate of oocyte production significantly higher than in normal, mated females and much higher than in intact virgins. This suggests that some nervous, inhibitory factor normally controls oocyte production. Mating partially suppresses this inhibitory mechanism, but the higher rate of oocyte production in females with severed nerve cords indicates that the inhibitory mechanism is exercising some control over oocyte production at all times. A sequence of events in the control of oocyte production in Tenebrio is proposed.

scholarly journals Seizure burden fluctuates with the female reproductive cycle in a mouse model of chronic temporal lobe epilepsy

2020 ◽  
Vol 334 ◽  
pp. 113492
Author(s):  
Jiang Li ◽  
Leanna K. Leverton ◽  
Laxmi Manisha Naganatanahalli ◽  
Catherine A. Christian-Hinman
Keyword(s):  
Mouse Model ◽  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Reproductive Cycle ◽  
Female Reproductive Cycle
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