Fertile male tortoiseshell cat with true chimerism 38,XY/38,XY

2020 ◽  
Vol 55 (9) ◽  
pp. 1139-1144
Author(s):  
Monika Bugno‐Poniewierska ◽  
Barbara Kij ◽  
Wojciech Witarski ◽  
Magdalena Wojtaszek ◽  
Anna Radko ◽  
...  
Keyword(s):  
Fertile Male

Accelerated Sexual Maturation in Methoprene-Treated Sterile and Fertile Male Queensland Fruit Flies (Diptera: Tephritidae), and Mosquito Larvicide as an Economical and Effective Source of Methoprene

2019 ◽  
Vol 112 (6) ◽  
pp. 2842-2849 ◽  
Author(s):  
Saleh Mohammad Adnan ◽  
Iffat Farhana ◽  
Jess R Inskeep ◽  
Polychronis Rempoulakis ◽  
Phillip W Taylor
Keyword(s):  
Sexual Development ◽  
Low Cost ◽  
Fruit Flies ◽  
Sterile Male ◽  
Bactrocera Tryoni ◽  
Control Programs ◽  
Copula Duration ◽  
Mosquito Larvicides ◽  
Fertile Male ◽  
Effective Source

Abstract Queensland fruit flies Bactrocera tryoni (‘Q-fly’) have long adult prereproductive development periods, which can present challenges for sterile insect technique (SIT) programs. Holding the sterile flies in release facilities is expensive for control programs. Alternatively, releases of sexually immature males can lead to substantial mortality of sterile males before they mature. Recent studies have reported effectiveness of dietary supplementation with a mosquito larvicide (NOMOZ) that contains S-methoprene, a juvenile hormone analogue, for accelerating sexual development of fertile Q-fly males. However, it is not known whether effects on sterile flies are comparable to effects on fertile flies, or whether effects of methoprene-containing larvicide are comparable to effects of analytical standard methoprene such has been used in most studies. Here we address both knowledge gaps, investigating the effects of analytical standard methoprene and NOMOZ mixed with food and provided for 48 h following emergence on sexual development and longevity of fertile and sterile Q-flies. Compared with controls, fertile and sterile male Q-flies that were provided diets supplemented with methoprene from either source exhibited substantially accelerated sexual development by 2–3 d and longer mating duration. Unlike males, females did not respond to methoprene treatment. Although fertile and sterile flies were generally similar in sexual development and response to methoprene treatment, sterile flies of both sexes tended to have shorter copula duration than fertile flies. Neither methoprene supplements nor sterilization affected longevity of flies. The present study confirms effectiveness of dietary methoprene supplements in accelerating sexual development of both fertile and sterile male (but not female) Q-flies, and also confirms that low-cost mosquito larvicides that contain methoprene can achieve effects similar to those for high-cost analytical grade methoprene as prerelease supplements for Q-fly SIT.

Interspecies embryo transfer in camelids: the birth of the first Bactrian camel calves (Camelus bactrianus) from dromedary camels (Camelus dromedarius)

2009 ◽  
Vol 21 (2) ◽  
pp. 333 ◽  
Author(s):  
A. Niasari-Naslaji ◽  
D. Nikjou ◽  
J. A. Skidmore ◽  
A. Moghiseh ◽  
M. Mostafaey ◽  
...  
Keyword(s):  
Endangered Species ◽  
Embryo Transfer ◽  
Single Injection ◽  
Bactrian Camel ◽  
Dromedary Camels ◽  
First Report ◽  
Camelus Bactrianus ◽  
Bactrian Camels ◽  
Mature Size ◽  
Fertile Male

Interspecies embryo transfer is a possible approach that can be used to conserve endangered species. It could provide a useful technique to preserve the Iranian and wild Bactrian camels, both of which are threatened with extinction. In the present study, one Bactrian camel was superovulated using decreasing doses of FSH (60, 40, 30, 30, 20, 20 mg, b.i.d.; Folltropin-V; Bioniche, London, ON, Canada) for 6 days, followed by a single injection of FSH (20 mg, i.m.) on Day 7. Daily ovarian ultrasonography was performed until most of the growing follicles had reached a mature size of 13–17 mm, at which time the camel was mated twice, 24 h apart, with a fertile male Bactrian camel. At the time of first mating, female camels were given 20 μg, i.v., buserelin (Receptal; Intervet, Boxmeer, The Netherlands). One day after the donor camel had been mated, the dromedary recipients (n = 8) were injected with 25 mg, i.v., porcine LH (Lutropin-V; Bioniche) to induce ovulation. Embryos were recovered on Day 8.5 after the first mating and transferred non-surgically into recipients on Day 7.5 after LH injection. Pregnancy was diagnosed 25 days after embryo transfer. Healthy Bactrian camel calves (n = 4) were born without any particular complications at the time of parturition (e.g. dystocia and neonatal diseases). The present study is the first report of the birth of Bactrian camel calves from dromedary camels, as well as the first report of interspecies embryo transfer in old world camelids.

Fertile male tortoiseshell cats

1984 ◽  
Vol 75 (5) ◽  
pp. 397-402 ◽  
Author(s):  
Chris Moran ◽  
Chris B. Gillies ◽  
Frank W. Nicholas
Keyword(s):  
Fertile Male

scholarly journals False-positive Y-microdeletion result for a fertile male caused by an alteration under a PCR primer

2002 ◽  
Vol 25 (6) ◽  
pp. 352-357 ◽  
Author(s):  
A. R. THORNHILL ◽  
A. J. GUENTHER ◽  
G. M. BARBAROTTO ◽  
D. R. SESSION ◽  
M. A. DAMARIO ◽  
...  
Keyword(s):  
False Positive ◽  
Fertile Male ◽  
Pcr Primer

Développement de l'anthère et du grain de pollen chez une espèce sauvage apparentée à la canne à sucre (Saccharum spontaneum)

1996 ◽  
Vol 74 (5) ◽  
pp. 788-795 ◽  
Author(s):  
D. Roques ◽  
P. Feldmann
Keyword(s):  
Pollen Development ◽  
Pollen Grains ◽  
Mature Pollen ◽  
Saccharum Spontaneum ◽  
Canne À Sucre ◽  
Secretory Type ◽  
Fertile Male ◽  
La Canne À Sucre

A study of the histocytological characteristics of anthers and pollen development of fertile male genotypes of Saccharum spontaneum L. support the division of microsporogenesis into nine distinct stages: premeiosis, meiosis and tetrad, young uninucleate microsporal stage, median uninucleate microsporal stage, median vacuolized uninucleate microsporal stage, late vacuolized uninucleate microsporal stage, first pollinic mitosis, second pollinic mitosis, mature pollen. Pollen grains are subspherical, monosporal, operculated with verrucose type ornamentations. A secretory type tapetum, present from the very first microsporal stages, is covered with orbicules persisting until anthesis. Keywords: Saccharum spontaneum, microsporogenesis, pollen, tapetum. [Journal translation]

scholarly journals Tesmin, Metallothionein-Like 5, is Required for Spermatogenesis in Mice†

2020 ◽  
Vol 102 (4) ◽  
pp. 975-983
Author(s):  
Asami Oji ◽  
Ayako Isotani ◽  
Yoshitaka Fujihara ◽  
Julio M Castaneda ◽  
Seiya Oura ◽  
...  
Keyword(s):  
Germ Cells ◽  
Male Fertility ◽  
Gene Knockout ◽  
Pachytene Stage ◽  
Male Mice ◽  
Male And Female ◽  
Female Mice ◽  
Specific Transcript ◽  
Splicing Variants ◽  
Fertile Male

Abstract In mammals, more than 2000 genes are specifically or abundantly expressed in testis, but gene knockout studies revealed several are not individually essential for male fertility. Tesmin (Metallothionein-like 5; Mtl5) was originally reported as a testis-specific transcript that encodes a member of the cysteine-rich motif containing metallothionein family. Later studies showed that Tesmin has two splicing variants and both are specifically expressed in male and female germ cells. Herein, we clarified that the long (Tesmin-L) and short (Tesmin-S) transcript forms start expressing from spermatogonia and the spermatocyte stage, respectively, in testis. Furthermore, while Tesmin-deficient female mice are fertile, male mice are infertile due to arrested spermatogenesis at the pachytene stage. We were able to rescue the infertility with a Tesmin-L transgene, where we concluded that TESMIN-L is critical for meiotic completion in spermatogenesis and indispensable for male fertility.

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