A metamorphic inducer in the opisthobranch Haminaea callidegenita: partial purification and biological activity.

From: The Biological Bulletin | Date: October 1, 1994| Author: Gibson, Glenys D.; Chia, Fu-Shiang | Copyright information

Larvae of Haminaea callidegenita (Mollusca: Cephalaspidea) were induced to metamorphose by a compound found in the gelatinous matrix composing most of the egg mass. A functionally similar compound isolated from adult tissue also induced metamorphosis in H. callidegenita larvae. Opisthobranchs are frequently induced to metamorphose by a specific prey item or a substrate characteristic of the adult habitat, but this is the first known instance of metamorphosis occurring in response to a compoun...

Related newspaper, magazine, and journal articles from HighBeam Research

Embryos at the edge of tolerance: effects of environment and structure of egg masses on supply of oxygen to embryos.
The Biological Bulletin ; Introduction Supply of oxygen limits the rates of development of crowded embryos with limited diffusional exchange (Strathmann and Strathmann, 1995). Retarded development of internal embryos suggests that egg masses of diverse taxa approach the limits of adequate diffusional exchange (Chaffee and
A metamorphic inducer in the opisthobranch Haminaea callidegenita: partial purification and biological activity.
The Biological Bulletin ; Introduction Larvae of most benthic marine invertebrate species are induced to metamorphose by a cue, either chemical or physical, that identifies a specific habitat as suitable for juvenile or adult existence (reviewed by Pawlik, 1992). This cue, or metamorphic inducer, triggers a radical
Pirates of the amphibian: males fertilize eggs of another guy's gal.(This Week)
Science News ; Male frogs in a mountain pond sneak their sperm directly onto egg masses of a female who's already mated with another male, an extra effort at fatherhood that scientists haven't reported before in amphibians, says an international team. In the study population, original matings fertilized on
Wasp release to help control gypsy moth population Hungry parasites to be introduced this afternoon
The Milwaukee Journal Sentinel ; The city's newest residents are parasites that are no bigger than a gnat but are expected to play a big part in controlling the population of gypsy moths in Cedarburg. Hundreds of tiny, hungry wasps are to be released early this afternoon on clumps of moth eggs attached to century-old burr oaks
Evaluate plants before pruning
The Record (Bergen County, NJ) ; 00-00-0000 Evaluate plants before pruning JOEL FLAGLER Date: 10-24-2002, Thursday Section: HOME Edtion: All EditionsTwo Star B. Two Star P. One Star B Column: GARDENING Drought has weakened our trees and shrubs. Don't compound the problem by pruning in the wrong place or at the wrong time. Improper