Comparing the effect of triadimefon and its metabolite on male and female Xenopus laevis: Obstructed growth and gonad morphology

Chemosphere ◽  
2020 ◽  
Vol 259 ◽  
pp. 127415
Author(s):  
Wenjun Zhang ◽  
Yue Deng ◽  
Li Chen ◽  
Luyao Zhang ◽  
Zikang Wang ◽  
...  
Keyword(s):  
Xenopus Laevis ◽  
Male And Female ◽  
Gonad Morphology

scholarly journals Significance of temporal and spectral acoustic cues for sexual recognition in Xenopus laevis

2006 ◽  
Vol 274 (1609) ◽  
pp. 479-488 ◽  
Author(s):  
Clémentine Vignal ◽  
Darcy Kelley
Keyword(s):  
Xenopus Laevis ◽  
Sexual Identity ◽  
Carrier Frequency ◽  
Temporal Pattern ◽  
Acoustic Cues ◽  
Male And Female ◽  
Identity Recognition ◽  
Vocal Responses ◽  
Spectral Cues ◽  
Sexual Recognition

As in many anurans, males of the totally aquatic species, Xenopus laevis , advertise their sexual receptivity using vocalizations. Unusually for anurans, X. laevis females also advertise producing a fertility call that results in courtship duets between partners. Although all X. laevis calls consist of repetitive click trains, male and female calls exhibit sex-specific acoustic features that might convey sexual identity. We tested the significance of the carrier frequency and the temporal pattern of calls using underwater playback experiments in which modified calls were used to evoke vocal responses in males. Since males respond differently to male and female calls, the modification of a key component of sexual identity in calls should change the male's response. We found that a female-like slow call rhythm triggers more vocal activity than a male-like fast rhythm. A call containing both a female-like temporal pattern and a female-like carrier frequency elicits higher levels of courtship display than either feature alone. In contrast, a male-like temporal pattern is sufficient to trigger typical male–male encounter vocalizations regardless of spectral cues. Thus, our evidence supports a role for temporal acoustic cues in sexual identity recognition and for spectral acoustic cues in conveying female attractiveness in X. laevis .

The genes encoding the major 42S storage particle proteins are expressed in male and female germ cells of Xenopus laevis

Development ◽  
1991 ◽  
Vol 113 (3) ◽  
pp. 851-856
Author(s):  
B. Abdallah ◽  
J. Hourdry ◽  
S. Deschamps ◽  
H. Denis ◽  
A. Mazabraud
Keyword(s):  
Xenopus Laevis ◽  
Germ Cells ◽  
5S Rna ◽  
Male And Female ◽  
Long Term Storage ◽  
Genes Encoding ◽  
Rna Accumulation ◽  
Storage Particle ◽  
Term Storage

As components of the 42S storage particles (thesaurisomes), thesaurin a and thesaurin b are involved in the long-term storage of tRNA and 5S RNA in previtellogenic oocytes of Xenopus laevis. Thesaurin a and thesaurin b are among the most abundant proteins in previtellogenic oocytes. We show here that the mRNAs encoding thesaurin a and thesaurin b are present not only in previtellogenic oocytes but also in pre-meiotic germ cells (oogonia). These mRNAs can also be detected in spermatogonia and early spermatocytes, and are translated into protein in testis, as they are in ovary. We conclude that male germ cells mimic female germ cells in several aspects of gene activity related to RNA accumulation and metabolism.

scholarly journals Experimental Studies On The Sexual Cycle Of The South African Clawed Toad (Xenopus Laevis). II

1938 ◽  
Vol 15 (1) ◽  
pp. 82-90
Author(s):  
C. W. BELLERBY
Keyword(s):  
Seasonal Variation ◽  
Xenopus Laevis ◽  
South African ◽  
Wave Length ◽  
Experimental Studies ◽  
Reproductive Activity ◽  
Sexual Cycle ◽  
The South ◽  
Natural Conditions ◽  
Male And Female

1. When maintained at an optimum nutritional level both sexes of the South African clawed toad (Xenopus laevis) grow at a normal rate in the complete absence of light, or after removal of the eyes. 2. No detectable atrophic changes take place in the ovaries and testes of eyeless animals after 18 months or in the gonads of male and female toads kept in absolute darkness for 7 months. 3. No evidence is provided by the experiments to show that light is essential for the maintenance of reproductive activity in X. laevis or that seasonal variation in light intensity or wave-length plays any part in the control of the sexual cycle under natural conditions.

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