Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Arne Semb-Johansson"'
Publikováno v:
Fauna Norvegica, Vol 20 (2024)
Lemmings from a laboratory colony did not show statistically significant differences in growth between the sexes up to an age of 50 days. After this, growth slowed down, but adult individuals continued to gain weight, some reaching more than 100 g. R
Externí odkaz:
https://doaj.org/article/73235ad7db2248e6a898d7c0714532c6
Autor:
Svein Ellefsen, Arne Semb-Johansson
Publikováno v:
Fauna Norvegica, Vol 11 (1990)
In vaginal smears of Norwegian lemmings swelling of leucocytes was prevented by quickly drying the effluent using a hairdryer. The mean length of the oestrous cycle in captive lemmings was 5.6 days. About half of the animals rarely cycled and some sp
Externí odkaz:
https://doaj.org/article/2db595f99ce74c07999b71fbf4cd6cb7
Autor:
Anders Grimnes, Arne Semb-Johansson
Publikováno v:
Fauna Norvegica, Vol 9 (1988)
The development of placental scars and the correlation between the number of scars and the number of young born, was studied in Norwegian lemmings Lemmus lemmus (L.) from a laboratory colony. The 55 females used were separated into series where the n
Externí odkaz:
https://doaj.org/article/9c9fd0315b824d6d8dcf714f30967480
Autor:
Arne Semb-Johansson
Publikováno v:
Amphibia-Reptilia. 13:409-412
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff84dfd8a0413cf4c149a4671cd9380c
https://doi.org/10.1163/156853892x00111
https://doi.org/10.1163/156853892x00111
Autor:
Arne Semb Johansson
Publikováno v:
The Biological Bulletin. 108:40-44
1. In starved females of Leucophaea maderae whose ovaries remain immature, egg development can be induced by the implantation of corpora allata from fed donors. Implants from adult males have the same qualitative effect as those from females, but the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5cb9fe2197a58653b9492d79e05413e
https://doi.org/10.2307/1538395
https://doi.org/10.2307/1538395
Autor:
Trond Bråten, Arne Semb Johansson
Publikováno v:
Insect Systematics & Evolution. 1:258-262
The cuticle of the evaporative area of the metathoracic scent glands of adult heteropterans shows marked structural modifications. One specialized type of cuticle is covered by micro-flakes supported and interconnected by low ridges. In Lygaeidae and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21bf27bdf161779d7e7900f2bf7dee66
https://doi.org/10.1163/187631270x00212
https://doi.org/10.1163/187631270x00212
Autor:
Arne Semb Johansson
Publikováno v:
Zweites Internationales Symposium über Neurosekretion ISBN: 9783642532535
The milkweed bug, Oncopeltus fasciatus (Dallas), has proved very favorable for histological and experimental studies an neurosecretion. The present paper gives a summary of what has been observed in this insect.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c23627dc01be8a606de882e6de86192
https://doi.org/10.1007/978-3-642-53252-8_19
https://doi.org/10.1007/978-3-642-53252-8_19
Publikováno v:
Oikos. 33:246
Two populations of lemmings in 6 m2 indoor pens, provided with surplus food, were characterized by increase, peak and decline phases. The founding females in both populations produced 16-18% of all litters. The sex ratio at birth was approximately 1:
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62b89c9d5bd1e167d0b8420dbc766c0f
https://doi.org/10.2307/3544001
https://doi.org/10.2307/3544001