1-20 OF 21 RESULTS FOR

schizogony

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 January 1999
Journal of Foraminiferal Research (1999) 29 (1): 75–84.
... on the formation of reproductive cysts and the nearly total decalcification of the parental test during schizogony. These studies also follow the ontogenic development of the test in individuals produced by schizogony. Irregularities during development of the early stages lead to adults with characteristic...
Journal Article
Published: 01 July 1992
Micropaleontology (1992) 38 (3): 313–314.
Journal Article
Published: 01 April 1970
Micropaleontology (1970) 16 (2): 227–232.
Journal Article
Published: 01 October 2006
Journal of Foraminiferal Research (2006) 36 (4): 279–290.
... of the supposed gamonts from 36.5–41.7 μm. The proportions of the three generations are used to infer long-term life cycles in time-averaged assemblages. Samples from Bottsand (Kiel Bight, Germany) contain particularly high proportions of schizonts, indicating that schizogony may be the dominant or sole mode...
FIGURES | View All (7)
Image
Hypothetical life cycle of  Trochammina inflata . The upper part depicts th...
Published: 01 October 2006
) with its offspring produced by multiple fission. The lower part represents the megalospheric schizont (A1) reproducing by cyclic schizogony inserted between agamont and gamont, according to the hypothesis of trimorphism. M: meiosis. Test size of gamont 474 μm, prolocular size of gamont 35 μm, test size
Journal Article
Published: 01 July 2014
Journal of Foraminiferal Research (2014) 44 (3): 316–324.
... embryos during schizogony. Tests having two or more embryonic apparatuses are called polyvalent individuals ( Le Calvez, 1934 , 1938 ; Hottinger, 2006 ), irrespective of whether the test is normal or irregular. Juveniles released from the mother test in schizogony usually have two or three chambers...
FIGURES | View All (4)
Journal Article
Published: 01 January 2009
Journal of Foraminiferal Research (2009) 39 (1): 8–14.
... that also produce megalospheric gamonts. The number of juveniles may therefore be indicative of a trimorphic life cycle that otherwise is particularly difficult to detect ( Röttger and others, 1990 ). The small number of juveniles detected in our parental specimen thus argues in favor of schizogony...
FIGURES
Journal Article
Published: 01 January 2006
Journal of Foraminiferal Research (2006) 36 (1): 77–89.
...) After schizogony, new reproductive nuclei were formed by means of multiple fission, possibly by spherical cytoplasmic areas that might have been externally calcified (protoconch). They were released through the cuniculi of the microspheric B-generation (agamont). (2) The growth of the reproductive...
FIGURES | View All (9)
Journal Article
Published: 01 July 2009
Journal of Foraminiferal Research (2009) 39 (3): 155–165.
... of size between the specimens. Scale bars are 100 μm. Only asexual reproduction or schizogony (multiple fission) was observed. A single parent was in the reproduction cyst and, after cytoplasmic division, the empty adult test separated from the cyst but remained among the offspring, which created...
FIGURES | View All (10)
Journal Article
Published: 01 October 2008
Journal of Foraminiferal Research (2008) 38 (4): 318–336.
... of the juvenile to a parental test can occur after schizogony. After fusion, the attached juvenile continues its development creating thus a double test. On the other hand, Wennrich and others (2007) suggested the formation of double tests is caused by hyposalinity. The area off the Gelting Noor faces...
FIGURES | View All (11)
Journal Article
Published: 20 April 2018
Journal of Foraminiferal Research (2018) 48 (2): 156–163.
... the size of reproducing specimens ranged from 120–230 µm. Reproduction by schizogony has been reported by Angell (1990) for Trochammina inflata collected from the Great Barrier Reef, while a biphasic life cycle with microspheric and megalospheric generations was described for Trochammina hadai...
FIGURES
Journal Article
Published: 01 July 2012
Journal of Micropalaeontology (2012) 31 (2): 121–129.
... as partly erroneous. Many of her observations confirm those of Lister (1895 ; see also Heron-Allen, 1930 ; Le Calvez, 1938 ) but some are new. She established that microspheric forms reproduce by schizogony (repeated asexual reproduction) in the spring and summer and that there is an increase...
FIGURES | View All (6)
Journal Article
Published: 01 January 2003
Journal of Foraminiferal Research (2003) 33 (1): 1–9.
... , V. , Lesourd , M. , and Debenay , J.-P. , 1999b , Laboratory observations on asexual reproduction (schizogony) and ontogeny of Ammonia tepida with comments on the life cycle : Journal of Foraminiferal Research , v. 29 , p. 75 – 84 . Stubbles , S.J. , Green , J.C...
FIGURES
Journal Article
Published: 13 February 2024
Journal of Foraminiferal Research (2024) 54 (1): 20–35.
... is revealed by one specimen recording the process of asexual reproduction (schizogony; Fig. 6.4 ). Its test contains about 27 megalospheric proloculi, the diameter of which matches that of the megalospheric specimens in Figures 6.1–6.3 and 6.5 . The initial growth of microspheric forms was not observed...
FIGURES | View All (8)
Journal Article
Published: 29 October 2021
Journal of Foraminiferal Research (2021) 51 (4): 318–331.
... commonly stay inside the layer. Velamentofex berolinensis also reproduced by forming new cells within the pseudopodial network ( Siemensma et al., 2021 ). Schizogony with multiple fission occurred in an individual of Lacogromia cassipara , resulting in 36 daughter cells ( Siemensma et al., 2017...
Journal Article
Published: 20 January 2023
Journal of Foraminiferal Research (2023) 53 (1): 3–19.
.... , Lesourd, M. , and Debenay, J.-P. , 1999 , Laboratory observations on asexual reproduction (schizogony) and ontogeny of Ammonia tepida with comments on the life cycle : Journal of Foraminiferal Research , v. 29 , p. 75 – 84 , DOI...
FIGURES | View All (11)
Journal Article
Published: 11 January 2019
Journal of Foraminiferal Research (2019) 49 (1): 76–93.
..., V., Lesourd, M., and Debenay, J.-P., 1999a , Laboratory observations on asexual reproduction (schizogony) and ontogeny of Ammonia tepida with comments on the life cycle : Journal of Foraminiferal...
FIGURES | View All (8)
Journal Article
Published: 01 July 2002
Journal of Foraminiferal Research (2002) 32 (3): 201–216.
... form of B. sphaerulata in the material they examined from the Tokara Islands and the reef crest of Kudaka Island, Okinawa. This form is a gamont, collected just after schizogony ( Kuwano, 1956 ). This variant is not present at Green Island Reef. However some variants of B. sphaerulata from Green...
FIGURES | View All (11)
Journal Article
Journal: Paleobiology
Published: 13 July 2018
Paleobiology (2018) 44 (3): 460–489.
... chambers, each one possibly developing in an individual whorl; (ii) the early fusion of two juveniles, which both develop after their fusion; (iii) the attachment of a juvenile to a parental test after schizogony, followed by the development of the juvenile specimen. According to Montgomery ( 1990...
FIGURES | View All (8)
Journal Article
Published: 01 October 2006
Journal of Sedimentary Research (2006) 76 (10): 1137–1161.
... sunlight, and/or test damage in turbulent water (e.g., Larsen 1976 ; ter Kuile and Erez 1984; Hallock and Glenn 1986 ). A-form-dominated LBF communities can be the result of apogamic schizogony (repetitive asexual reproduction resulting in successive generations of megalospheric schizonts, e.g...
FIGURES | View All (13)