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The sexes of Pinctada maxima


, : The sexes of Pinctada maxima. Kagaku Nanyo [sci South Sea] 2(1): 40-43

The sex of about 2000 living individuals of P. maxima was detd. at the fisheries of Australia and Palau, and it was found that d1 d" outnumber [male] [male] in younger or smaller shells. The number of [female] [female] increased in accordance with growth. Thus pro-tandry was supposed to occur in this sp. Further it was found that this sp. undergoes sex change from [female] to [male]. 135 distinctly [female] specimens were kept alive in breeding cages which were left in the sea in June 1938. 3, 6 and 73% of them changed sex to [male] [male] after 1, 3 and 10 mos., respectively. No cases of reversion to the 9 condition were observed in these changed [male] [male].

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Other references

Maynard, J.H.; Fone, D.J., 1969: Haemochromatosis with osteogenic sarcoma in the liver. Medical Journal of Australia 2(25): 1260-1263

Rinke, Dieter., 1998: The kagu from New Caledonia Der Kagu aus Neukaledonien. Gefiederte Welt. Marz; 1223: 111

Midwinter, M.J.; Mercer, S.; Lambert, A.W.; de Rond, M., 2011: Making difficult decisions in major military trauma: a crew resource management perspective. The purpose of this article is to consider three underappreciated but important features of high performance teams: the trade-off relation between social and technical competence, the relevance of team size on productivity, and the inevitability o...

Loff, S.; Wessel, L.; Wirth, H.; Waag, K.L., 1994: Overflow incontinence--a rare manifestation of Peutz-Jeghers syndrome. We present the case of a 12-year-old girl with Peutz-Jeghers syndrome (PJS). Enormous polyps of the transverse colon intussuscepting into the rectum turned out to be the rate cause of overflow incontinence. Although she presented all the signs of...

Kostenko, I.G.; Savel'ev, S.V.; Verin, V.E., 1988: Dynamics of electrocardiographic and phonocardiographic indices following endovascular occlusion of patent ductus arteriosus. Klinicheskaia Meditsina 66(4): 47-50

Rakotonirainy, M.S.; Dutertre, M.; Brygoo, Y.; Riba, G., 1991: RRNA sequence comparison of Beauveria bassiana, Tolypocladium cylindrosporum, and Tolypocladium extinguens. Five strains of Tolypocladium cylindrosporum, one strain of Tolypocladium extinguens, and nine strains of Beauveria bassiana were analyzed using a rapid rRNA sequencing technique. The sequences of two highly variable domains (D1 and D2) located at...

Kopun M.; Granzow C., 1987: Extinction of glycogen deposition in somatic hybrids of glycogen synthesizing and glycogen free ascites tumor cells. European Journal of Cell Biology Supplement (17): 32

Kumagai, K.; Seki, Y.; Goto, N., 1972: Clinical and pathological studies in 3 cases of holoprosencephaly. Shinkei Kenkyu No Shimpo. Advances in Neurological Sciences 16(2): 293-301

Lembcke, B., 2009: Irritable bowel disease with flatulence: is the breath test for carbohydrate malabsorption obligatory? Contra. Deutsche Medizinische Wochenschrift 134(37): 1829-1829

Wolf R.B.; Spencer G.F.; Plattner R.D., 1985: Benzoxazolinone 2 4 dihydroxy 1 4 benzoxazin 3 one and its glucoside from acanthus mollis seeds inhibit velvetleaf abutilon theophrasti germination and growth. Seeds of Acanthus mollis contain (4% by dry weight) the glucoside 1 of 2,4-dihydroxy-1,4-benzoxazin-3-bone (DIBOA). Enzymatic hydrolysis of this glucoside yields DIBOA which easily degrades to benzoxazolinone (BOA), DIBOA completely inhibits velve...