In the life history of holometabolous insects, distinct developmental stages are tightly linked to feeding and non-feeding periods. The larval stage is characterized by extensive feeding, which supports the rapid growth of the animal and allows accumulation of energy stores, primarily in the larval fat body. In Drosophila melanogaster access to these stores during pupal development is possible ...

HIGHLIGHTS The longevity of the female and male Drosophila melanogaster is improved at doses given Aloe vera. Trifluralin has been observed to cause DNA damage, while vera shown reduce damage. reduced larval survival rate, increased rate high concentration.

this study was conducted to evaluate the effect of probiotic bactocell, a-max and inflammatory breast prebiotic mixture of these two compounds on growth, feed and larval survival of rainbow trout (oncorhynchus mykiss) conducted for 84 days. testing a randomized complete block design consisting of zero (control), 1.0, and 2.0 grams of probiotic bactocell, 5/1 and 5/2 grams of prebiotic a-max and...

We report here, the effects of extended competency on larval survival, metamorphosis, and postlarval juvenile growth of four closely related species of tropical sea urchins, Echinometra sp. A (Ea), E. mathaei (Em), Echinometra sp. C (Ec), and E. oblonga (Eo). Planktotrophic larvae of all four species fed on cultured phytoplankton (Chaetoceros gracilis) attained metamorphic competence within 22-...

Outbreak populations of crown-of-thorns starfish (COTS; Acanthaster spp.) cause widespread coral mortality. High nutrient river runoff generates phytoplankton blooms that potentially enhance larval food levels and success leading to outbreaks, a link posited by the terrestrial hypothesis (TRH). Runoff plumes also lower salinity, although parallel negative effects freshening on COTS larvae have ...

As coral reefs change in their composition, the dynamics of organisms that depend on them will likely also be affected. Traditionally, marine ecologists have recognized that settlement of fishes (and invertebrates) is tremendously variable in space and time, and changes in coral communities might therefore be expected to operate through effects on settlement. However, recent work demonstrates t...

This study investigated the effects of mate switching on the reproductive performance of the severum cichlid, Herosseverus, by advancing the egg and larval production in hatcheries. Two reproductive tactic treatments of “monogamous pair” and “mate switching” were used for evaluating 4 reproductive traits of egg production, hatching rate, spawning intervals, and starvation tolerance of the larva...

This study investigated the effects of mate switching on the reproductive performance of the severum cichlid, Herosseverus, by advancing the egg and larval production in hatcheries. Two reproductive tactic treatments of “monogamous pair” and “mate switching” were used for evaluating 4 reproductive traits of egg production, hatching rate, spawning intervals, and starvation tolerance of the larva...

There is a growing realization that the scale and degree of population connectivity are crucial to the dynamics and persistence of spatially structured populations. For marine organisms with complex life cycles, experiences during larval life may influence phenotypic traits, performance, and the probability of postsettlement survival. For a Caribbean reef fish (Thalassoma bifasciatum) on an oce...