To study the fate and distribution of normal bacterial flora in the developmental stages of the house fly Musca domestica vicin and to determine the external sites of the fly on which the pathogen(s) can adhere and mechanically transported through fly activity, the present study is carried out. Results suggest that bacteria and other microorganisms present in larval rearing media may play an im...

Marine seafloor ecosystems, and efforts to restore them, depend critically on the influx and settlement of larvae following their pelagic dispersal period. Larval dispersal and settlement patterns are driven by a combination of physical oceanography and behavioral responses of larvae to a suite of sensory cues both in the water column and at settlement sites. There is growing evidence that the ...

We address the hypothesis that fish that grow rapldly as larvae also grow rapidly as juveniles. Winter flounder Pleuronectes amerlcanus were reared from hatching through the larval period and up to 2 mo into the juvenile period. Successive cohorts of fish which metamorphosed on the same day were pooled and measured at weekly intervals during the early juvenile period. Growth rates of larvae and...

Vegetation management for constructed treatment wetlands often involves knocking down emergent vegetation with heavy equipment and inundating the dead vegetation after a period of drying. Such practices create favorable conditions for larval mosquitoes. We studied the relationship between length of the drying period for an emergent macrophyte, Typha sp., and the abundance of aquatic invertebrat...

Studies were made on the duration of the prehatch period of Boophilus decoloratus and on the subsequent survival and viability of larvae under natural conditions. The length of the prehatch and larval survival periods was found to be inversely dependent on increased temperature. A high initial temperature at the time of female drop decreased the prehatch period further, resulting in synchronous...

Dispersal of meroplankton larvae in the ocean is a key process which determines larval supply to areas suitable habitat and enables connectivity between populations, particularly for nonmigratory species. Our objective was use biophysical transport model create time series (2000–2019) retention, dispersal distance estimates commercially important Norway lobster (Nephrops norvegicus) on mud grou...

The aim of this study was to develop a pilot plant for the production of M. barbatus seed through artificial reproduction technology for possible use in aquaculture and repopulation of nursery areas. The study involved various phases: setup of the pilot plant, sourcing of M. barbatus specimens and their transplantation to an offshore long-line farm; production of live food (phytoplankton); sele...

In ecological models, the timing of amphibian metamorphosis is dependent upon rate of larval growth, e.g., tadpoles that experience a decrease in growth rate can initiate metamorphosis early. Recent authors have suggested that this plasticity may be lost at some point during the larval period. We tested this hypothesis by exposing groups of tadpoles of the gray treefrog, Hyla versicolor, to dif...