Results 111 to 120 of about 228 (132)

Ultrastructure of epidermal glands in neotenic reproductives of the termite Prorhinotermes simplex (Isoptera: Rhinotermitidae)

Arthropod Structure and Development, 2003
The ultrastructure of epidermal glands in neotenic reproductives of Prorhinotermes simplex is described and their development is compared among young and old neotenics of both sexes. Secretory cells forming the epidermal gland are attached to the cuticle all over the body.
Jan Šobotník, Robert Hanus
exaly   +3 more sources

Juvenile hormone synthesis as related to egg development in neotenic reproductives of the termite Reticulitermes flavipes, with observations on urates in the fat body

General and Comparative Endocrinology, 2007
The relationship between juvenile hormone (JH) synthesis and egg development, which is well documented in cockroaches, is much less studied in their close relatives, the termites. In this study of neotenic reproductives of the subterranean termite Reticulitermes flavipes, in vitro rates of juvenile hormone (JH) synthesis by corpora allata (CA) are ...
Karen L Elliott, Barbara Stay
exaly   +3 more sources

First record of intersex in neotenic reproductives of the termite Cryptotermes brevis (Isoptera: Kalotermitidae) [PDF]

open access: yesEntomological Science, 2017
AbstractDrywood termites of the family Kalotermitidae present a very flexible developmental pattern, in which pseudergates are totipotent and may become reproductives. In this study, three colonies of Cryptotermes brevis headed by neotenic reproductives were used: (i) colony A, with a primary king and a neotenic queen; (ii) colony B, with a primary ...
Laranjo, Lara Teixeira   +1 more
openaire   +3 more sources

High juvenile hormone titre and abdominal activation of JH signalling may induce reproduction of termite neotenics

Insect Molecular Biology, 2015
AbstractTermite castes are a key example of polyphenism, in which reproductive division of labour is clearly seen in colonies. The reproductive castes in termites include primary and neotenic reproductives; primary reproductives found a new colony whereas neotenics succeed them in the reproductive role when the primary reproductives die or become ...
Toru Miura, Kiyoto Maekawa
exaly   +3 more sources

Changes in juvenile hormone synthesis in the termite Reticulitermes flavipes during development of soldiers and neotenic reproductives from groups of isolated workers

Journal of Insect Physiology, 2008
Workers of Reticulitermes flavipes were isolated in groups of increasing numbers to determine the in vitro rates of juvenile hormone (JH) synthesis by individual pairs of corpora allata (CA) as other castes differentiated. Only neotenic reproductives developed in groups of 12.
Karen L Elliott, Barbara Stay
exaly   +3 more sources

Parthenogenetic reproduction in neotenics of the subterranean termite Reticulitermes speratus (Isoptera: Rhinotermitidae)

Entomological Science, 2003
AbstractExperiments with artificial colonies consisting of only female workers and those of female nymphs and workers of a subterranean termite, Reticulitermes speratus, showed that neotenics (ergatoids and nymphoids) can reproduce parthenogenetically.
Yoshinobu HAYASHI   +2 more
openaire   +1 more source

The influence of group size on ovarian development in adult and neotenic reproductives of the termiteZootermopsis angusticollis(Hagen) (Hodotermitidae)

International Journal of Invertebrate Reproduction, 1979
Termite imagines of Zootermopsis angusticollis (Hagen), while still in the colony as winged individuals, do not show ovary development, although vitellogenin is present in the blood at low levels. When removed from the colony, artificially dealated, and paired, vitellogenin levels rise: subsequently ovaries develop resulting in oviposition ...
S. L.W. GREENBERG, A. M. STUART
openaire   +1 more source

Termite colony ontogeny: supplemental data in the long-term assessment of reproductive lifespan, female neotenic production and colony size in Reticulitermes flavipes (Isoptera: Rhinotermitidae)

Bulletin of Entomological Research, 2007
AbstractReticulitermes flavipes (Kollar) colonies established by field-collected alates were reared in the laboratory for 11 years. Weights of members of each caste and full-colony censuses were performed regularly; the most recent 2003–2004 data are reported.
C E, Long, B L, Thorne, N L, Breisch
openaire   +2 more sources

Polystoma umthakathi(Monogenea): establishment, mortality and reproduction of neotenic parasites in experimentally infectedNatalobatrachus bonebergitadpoles

South African Journal of Zoology, 1990
The development of Polystoma umthakathi oncomiracidia were studied in experimentally infected Natalobatrachus boneberg tadpoles to establish a normal reference of parasite performance in the natural host. The anteroventral body wall is transparent in these tadpoles and it was possible to follow the destiny of each parasite throughout its life span of ...
openaire   +2 more sources

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