Individual Shrimp Rearing Increases the Power of Experimental Trials

Aquaculture Journal, Journal Year: 2025, Volume and Issue: 5(1), P. 2 - 2

Published: Jan. 20, 2025

Comparable and reproducible research is needed to improve Pacific white shrimp (PWS) aquaculture. These experiments typically involve before-and-after measurements of the same individual for paired statistical testing. However, marking with external or internal tags challenging, especially juveniles. A possible alternative rear individually in single-shrimp systems. While such systems may also prevent competitive interactions, PWS are considered social animals rearing negatively affect behavior. Therefore, general goal this study was evaluate effects versus multi-shrimp on survival, growth, welfare juvenile using a randomized controlled trial group sizes one, three, five individuals. We found that kept had higher survival rate, final body weights lengths, longer antennae than groups three five. The incidence eye cataracts not significantly different among groups. Based these results, we conclude has no negative welfare. system could be an marked allow testing experimental trials, when post-larvae specimens.

Language: Английский

Mismatched menu: the incompatibility of adult black soldier flies as praying mantis feed

Frontiers in Insect Science, Journal Year: 2025, Volume and Issue: 5

Published: March 19, 2025

Praying mantises are known for their striking predatory behavior and becoming increasingly popular with hobbyists scientific research. As generalist predators a wide range of insect-based diets, it is crucial to identify suitable prey options, especially restricted environments such as terrariums, which limited compared the wild. This study investigates use adult black soldier flies (BSF; Hermetia illucens; Linnaeus, 1758) sole food source two mantis species, Chlidonoptera lestoni (Roy & Leston, 1975) Hierodula patellifera (Serville, 1839), while assessing suitability potential challenges associated digestion. The BSF widely recognized its high nutritional value ease rearing, making an attractive candidate mantises. Although natural capture feed acceptance have been observed, seem not be both Our results suggest that imbalances in macronutrients, particularly protein/fat ratio, may contribute mortality. mono-diet could also limit access variety beneficial microorganisms essential maintaining healthy gut microbiota mantises, thereby affecting immunity well-being captivity. In addition, possible presence pathogenic affected mantises' survival. Future studies should focus on adjustment BSF, chemical composition strongly dependent they reared on.

Language: Английский