Limb developmental stages of the newt Notophthalmus viridescens
نویسندگان
چکیده
منابع مشابه
Limb developmental stages of the newt Notophthalmus viridescens.
The current study consists of a detailed description of normal larval forelimb and hindlimb development in the newt, Notophthalmus viridescens. This is the first comprehensive record of staging limb development in this urodele amphibian species, augmenting Fankhauser's work which was published in fragments 60 years ago. Larvae were obtained by natural spawning, without hormone injections and wh...
متن کاملThe “False Breeding Season” of the Eastern Newt, Notophthalmus viridescens
The terrestrial red eft stage is so different from the body form of the aquatic adult of the eastern newt that the two were considered separate species for nearly 60 years. Some populations lack the eft stage whereas in other populations the adults are aquatic only during the breeding season. In populations in which the adults are permanently aquatic or migrate to breeding ponds in fall, an aut...
متن کامل5S ribosomal RNA genes of the newt Notophthalmus viridescens.
The genes which code for the 5S ribosomal RNA in the newt, Notophthalmus viridescens have been cloned and analyzed. Two types of repeating unit were detected: a major type consisting of a 120 bp coding region with a 111 bp spacer, and a minor type composed of a coding region, a pseudogene, and a 113 bp spacer. The pseudogene is a 36 bp segment which corresponds to the 3' terminal third of the 5...
متن کاملThe Eastern red-spotted newt Notophthalmus viridescens uses
the geomagnetic field for two forms of spatial orientation: (1) shoreward orientation, which utilizes only directional (‘compass’) information (Phillips, 1986a,b; Phillips and Borland, 1992a,b; Deutschlander et al., 1999a,b, 2000; Phillips et al., 2001) and (2) map-based homing orientation (‘true navigation’), which utilizes both compass and geographic position (‘map’) information (Phillips, 19...
متن کاملFerromagnetic material in the eastern red-spotted newt notophthalmus viridescens
Behavioral results obtained from the eastern red-spotted newt (Notophthalmus viridescens) led to the suggestion of a hybrid homing system involving inputs from both a light-dependent and a non-light-dependent mechanism. To evaluate the possible role of a receptor based on biogenic magnetite in this animal, we performed magnetometry experiments on a set of newts previously used in behavioral ass...
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ژورنال
عنوان ژورنال: The International Journal of Developmental Biology
سال: 2005
ISSN: 0214-6282
DOI: 10.1387/ijdb.041910cw