NDLI: Embryonic development of Ampheres leucopheus and Iporangaia pustulosa (Arachnida: Opiliones: Gonyleptidae).

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Embryonic development of Ampheres leucopheus and Iporangaia pustulosa (Arachnida: Opiliones: Gonyleptidae).

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Embryonic development of Ampheres leucopheus and Iporangaia pustulosa (Arachnida: Opiliones: Gonyleptidae).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Gnaspini, Pedro Lerche, Cristiano Frederico
Description	Country affiliation: Brazil Author Affiliation: Gnaspini P ( Universidade de São Paulo, Instituto de Biociências, Departamento de Zoologia, São Paulo, SP, Brazil. gnaspini@ib.usp.br)
Abstract	The first studies concerning the embryonic development of harvestmen started in the late 19th century, and focused mostly on holarctic species, and only three species of the suborder Laniatores (the largest, among the four suborders considered presently) were studied. Moreover, the last studies on embryology of harvestmen were made during the late 1970s. This study focused on the embryonic development of Ampheres leucopheus (Gonyleptidae, Caelopyginae) and Iporangaia pustulosa (Gonyleptidae, Progonyleptoidellinae). The embryonic development was followed in the field, by taking daily photographs of different eggs during about 2 months. When laid, eggs of A. leucopheus and I. pustulosa have approximately 1.13 and 1.30 mm in diameter, respectively, and the second is embedded in a large amount of mucus. The eggs grow, mainly due to water absorption at the beginning of the process, and they reach a diameter of about 1.35 and 1.59 mm, respectively, close to hatching. It took, respectively, 29-56 days and 35-66 days from egg laying to hatching. For the description of the embryonic development, we use photographs from the field, SEM micrographs, and histological analysis. This allowed us, for instance, to document the progression of structures and pigmentation directly from live embryos in the field, and to record microstructures, such as the presence of perforations in the cuticle of the embryo in the place where eyes are developing. Yet, contrary to what was expected in the literature, we record an egg tooth in one of the studied laniatoreans.
File Format	HTM / HTML
ISSN	15525007
Issue Number	6
Volume Number	314
e-ISSN	15525015
Journal	Journal of Experimental Zoology Part B: Molecular and Developmental Evolution
Language	English
Publisher	Wiley
Publisher Date	2010-09-15
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Molecular Biology Discipline Zoology Arachnida Embryology Embryo, Nonmammalian Physiology Embryonic Development Animals Ultrastructure Female Larva Growth & Development Male Microscopy, Electron, Scanning Ovum Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Genetics Developmental Biology Molecular Medicine Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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