scholarly journals Induction of sex ratio change and intersex in Tegillarca granosa (Bivalvia: Arcidae) by waterborne zinc exposure

2021 ◽  
Vol 21 ◽  
pp. 100794
Author(s):  
Hyeon Jin Kim ◽  
So Ryung Shin ◽  
Hyejin Kim ◽  
Jung Jun Park ◽  
Yun Kyung Shin ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Tegillarca Granosa ◽  
Ratio Change ◽  
Waterborne Zinc ◽  
Zinc Exposure

SEX RATIO VARIABILITY OF MUSCIDIFURAX ZARAPTOR (HYMENOPTERA: PTEROMALIDAE)

1979 ◽  
Vol 111 (1) ◽  
pp. 105-109 ◽  
Author(s):  
H. G. Wylie
Keyword(s):  
Sex Ratio ◽  
House Fly ◽  
Female Parasite ◽  
Differential Survival ◽  
Female Progeny ◽  
Male And Female ◽  
Ratio Change

AbstractFemales of Muscidifurax zaraptor K. & L. produce a smaller percentage of female progeny as the ratio of ovipositing females to hosts (house fly pupae) increases. Delays in oviposition are apparently responsible for the sex ratio change, because they reduce the percentage of fertilized eggs, i.e. female eggs, that the parasites lay. Delays increase in frequency as the parasite:host ratio increases, and result mostly from interference among the ovipositing females; the interference is mostly or entirely physical. Solitary females of M. zaraptor produce slightly fewer though not significantly fewer female progeny when low host densities delay oviposition; more tests would be required to confirm this effect. There is no evidence for differential survival of the male and female parasite larvae on superparasitized hosts.

Effect of waterborne zinc exposure on metal accumulation, enzymatic activities and histology of Synechogobius hasta

2011 ◽  
Vol 74 (7) ◽  
pp. 1864-1873 ◽  
Author(s):  
J.-L. Zheng ◽  
Z. Luo ◽  
Q.-L. Chen ◽  
X. Liu ◽  
C.-X. Liu ◽  
...  
Keyword(s):  
Metal Accumulation ◽  
Enzymatic Activities ◽  
Waterborne Zinc ◽  
Zinc Exposure

OBSERVATIONS ON LIFE HISTORY AND SEX RATIO VARIABILITY OF EUPTEROMALUS DUBIUS (HYMENOPTERA: PTEROMALIDAE), A PARASITE OF CYCLORRHAPHOUS DIPTERA

1976 ◽  
Vol 108 (11) ◽  
pp. 1267-1274 ◽  
Author(s):  
H.G. Wylie
Keyword(s):  
Life History ◽  
Sex Ratio ◽  
Lower Percentage ◽  
Female Progeny ◽  
History Of ◽  
Ratio Change

AbstractFemales of Eupteromalus dubius (Ashm.) oviposit on pupae of cyclorrhaphous Diptera and the larvae develop gregariously as ectoparasites. Details of the life history of E. dubius are described. A progressively lower percentage of female progeny of E. dubius matures as the parasite:host ratio increases. Three mechanisms that may cause this sex ratio change are examined and discussed.

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