+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The mode of sex determination in dinophilus gyrociliatus archiannelida

, : The mode of sex determination in dinophilus gyrociliatus archiannelida. International Journal of Invertebrate Reproduction & Development 11(2): 159-172

The regular occurrence of a univalent sex chromosome in male meiosis but not in female meiosis was confirmed by light (orcein staining of squash preparations) and electron microscopical (3-D-reconstruction of serial sections) techniques. Therefore, male heterogamety, most probably of the XO-XX type, is present in Dinophilus. This seems to be in conflict with the obvious occurrence of two types of eggs, large ones and small ones, that normally give rise to females and males, respectively. The review of available data shows that the control of egg ratio and therefore of sex ratio in Dinophilus gyrociliatus is progamic and influenced by environmental as well as genetic conditions. Sex determination eventually is syngamic and brought about by selective fertilization of large eggs by female determining sperms and of small eggs by male determining sperms.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 006719475

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Channappa, T. C., 1994: In-situ moisture conservation in arid and semi-arid tropics. Earlier efforts for water conservation in India were concentrated upon construction of various types of bunds across the land slope to control erosion and conserve soil. All erosion control measures however, led to accumulation of water against th...

Korkia, I. R., 1961: New data on the cell-free zone in the embryonic lens. Soobshcheniya Akademii Nauk Gruzinskoi SSR: 27: 607-612

Wollenzien, J.; Wollenzien, T.; D'souza, J.; Brown, J.; Goeken, N., 1997: High risk corneal transplants Analysis of variables associated with outcome. Human Immunology 55(SUPPL 1): 134

Capuozzo E.; Gigante M.C.; Salerno C.; Crifo C., 1985: Hypoxanthine transport through human erythrocyte membranes. Pediatric Research 19(7): 748

Giuditta A., 1974: Functional aspects of nucleic acid metabolism in brain. Genazzani, E And H Herken (Ed ) Central Nervous System Studies on Metabolic Regulation And Function International Symposium Saint Vincent, Italy, Sept 16-17, 1972 Viii+249p Illus Springer-Verlag: Heidelberg, West Germany; New York, N Y , U S A Isbn 0-387-06444-3; Isbn 3-540-06444-3 70-77

Miyazaki, E.; Kojima, I.; Kojima, S., 1985: Chemisorption of molecular nitrogen on palladium surfaces at and above room temperature. The adsorption of nitrogen on polycrystalline Pd surfaces under ultrahigh vacuum (uhv) conditions has been studied at and above room temperature by means of TPTD-MS (temperature programmed thermal desorption mass spectrometry), isotopic exchange r...

Ludwig, H., 1999: Thoughts on the patient-doctor relationship in obstetrics and gynecology. European Journal of Obstetrics & Gynecology & Reproductive Biology 85(1): 85-91, July

Flemming J.; Virchow C., 1971: Late results following rifampicin therapy and tolerance of rifampicin given on a long term basis. Respiration 28(SUPPL): 107-115

WangDaPeng; ZhangDanDan; ChenWanYi; YuShuiJing; ShiXianMing, 2010: Retention of Vibrio parahaemolyticus in oyster tissues after chlorine dioxide treatment. <i>Vibrio parahaemolyticus</i> is an important food-borne bacterium that is closely related to food poisoning from consumption of raw or lightly-cooked oysters. Therefore, intensive efforts must be taken to depurate the contaminated oy...

Von Gunten, Charles F.; Von Roenn, Jamie H., 1992: Clinical aspects of human immunodeficiency virus-related lymphoma. As patients with human immunodeficiency virus infection live longer because of better antiretroviral therapy and infection prophylaxis, the incidence of non-Hodgkin's lymphoma has increased. The risk increases inversely with CD4 count sbd the...