|
Attraction of larvae of the armyworm Spodoptera litura (Lepidoptera: Noctuidae) to coloured surfaces
|
Key words. Armyworm, Spodoplera litura, visual attraction of larvae, colour
Abstract. Attraction of first instar larvae of Spodoptera litura to different colours was studied to determine those that could be used as effective visual attractants for trapping the larvae during dispersal. The larvae were presented with cones of coloured paper. Each cone was placed in the center of a 15-cm Petri dish around the edge of which the larvae were released. Percentage of larvae arriving at the con...
Related newspaper, magazine, and journal articles from HighBeam Research
|
Palatability and chemical defense of marine invertebrate larvae.
Ecological Monographs
; INTRODUCTION Most marine invertebrates have complex life cycles consisting of a planktonic larval stage that settles to the benthos and metamorphoses into a more sedentary (often sessile) form. Some species produce large numbers of very small larvae that feed (=planktotrophy), grow, and develop
|
|
Sea gauge will plot drifting coral larvae
Honolulu Star - Bulletin
; Like tracking grains of sand, scientists are using high-tech devices to follow millions of microscopic coral larvae off the coast of Maui. And they'll be doing it in the dark. By mapping the nocturnal journeys of some of the tiniest of sea animals, researchers from the U.S. Geological Survey, the
|
|
Action spectrum for the photophobic response of Ciona intestinalis (ascidieacea, urochordata) larvae implicates retinal protein
Photochemistry and Photobiology
; ABSTRACT Ascidian tadpole larvae change swimming behavior during the course of development. The photic behavior of the larvae of Ciona intestinalis was monitored by a computerized cell-tracking system with a time resolution of 0.1 s. Newly hatched larvae swim at an average speed of 1.4 mm/s but
|
|
Serotonin and dopamine have opposite effects on phototaxis in larvae of the bryozoan Bugula neritina.
The Biological Bulletin
; Introduction Regulation of the vertical distributions of pelagic larvae of marine invertebrates is most likely restricted to the vectoral factors of current velocity, light direction, and gravity (Crisp, 1984). Of these, most is known about the influence of light. Studies of the role of phototaxis
|
|
Settlement in flow: upstream exploration of substrata by weakly swimming larvae.
Ecology
; INTRODUCTION The behavior of dispersing propagules - juveniles or adults - upon reaching their preferred habitats may play an important role in determining the distribution of species. Most animal species can disperse and select new, favorable habitats as juveniles or adults. However, dispersion of
|
|
Measuring diversity of planktonic larvae.(Marine Biodiversity)(Cover Story)
Oceanus
; Catch 'Em (and Identify 'Em) If You Can Imagine several million microscopic organisms living in a single glass of seawater! This is the emerging picture of planktonic ecosystems in coastal environments. The density of organisms is overwhelming and most species have unique roles within the
|
|
|
Settling on the seafloor: deep in the ocean, larvae search for 'home, sweet home'.
Oceanus
; People may search for a long time, but they know it when they see it--the right job in the right town, or the right house in the right neighborhood. Then they settle down, set up shop, and put down roots. At the bottom of the ocean, tiny larvae of deep-sea animals, floating through the black
|
|
|
The distribution of marine invertebrate larvae near vertical surfaces in the Rocky subtidal zone.
Ecology
; INTRODUCTION The question of how far larvae disperse away from their point of release is fundamental to understanding community dynamics in marine benthic systems (Connell 1985, Sebens 1985). Three questions are relevant: (1) how long does a larva remain in the plankton? (2) how much influence, by
|
|
Ant larvae sway to say, 'feed me!'.(Zoology)(Brief Article)
Science News
; Without legs or much of a face, ant larvae don't have many options for expression. They can sway, however, and when they do, they're signaling to their nursemaids that they want food, according to the most detailed study yet of body language in ant larvae. Researchers have long observed swaying by
|
|
|
Waterborne and Surface-Associated Carbohydrates as Settlement Cues for Larvae of the Specialist Marine Herbivore Alderia modesta.
The Biological Bulletin
; PATRICK J. KRUG [1 ADRIANA E. MANZI [2] Abstract. Larvae of the specialist marine herbivore Alderia modesta (Opisthobranchia: Ascoglossa) metamorphose in response to a chemical settlement cue from the alga Vaucheria longicaulis, the obligate adult prey. Bioactivity coeluted with both high and low
|