Effect of Diet and Stocking Densities on Life History Traits of Clea helena (Philippi 1847) Reared in Captivity

Coelho, Ana Rita; Dinis, María Teresa; Reis, Jorge dos

doi:10.4172/2155-9546.1000187

Cited by 12 publications

(12 citation statements)

References 8 publications

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“…This study is the first known stable isotope analysis on Buccinidae snail, with the literature mainly focusing on its taxonomy and geographic distribution (Polgar et al 2015). Our results show that the snail had little overlap with δ 13 C values for leaf litter or periphyton (Table 2) and the δ 15 N values confirm reports in the literature that Buccinidae is predacious (Coelho et al 2013).…”

Section: Discussionsupporting

confidence: 84%

Macroinvertebrate trophic structure on waterfalls in Borneo

Baker

Chadwick

McGill

et al. 2017

Mar. Freshwater Res.

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Section: Discussionsupporting

confidence: 84%

Macroinvertebrate trophic structure on waterfalls in Borneo

Baker

Chadwick

McGill

et al. 2017

Mar. Freshwater Res.

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“…Detailed knowledge of the conditions required for optimal growth, development, and nutrient allocation of BSF is necessary for implementation of large‐scale production systems (Coelho et al., ). The effect of nutrient density of the ingested food on development, growth, and body composition of BSF in interaction with larval density has not been investigated systematically before.…”

Section: Introductionmentioning

confidence: 99%

Influence of larval density and dietary nutrient concentration on performance, body protein, and fat contents of black soldier fly larvae (Hermetia illucens)

Barragán-Fonseca

Dicke

Loon

2018

Entomologia Exp Applicata

179

117

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Performance and body composition of insect larvae depend on quality and quantity of their diet, and on biotic factors such as larval density. We investigated the effect of dietary nutrient concentration and larval rearing density on survival, development, growth, and protein and fat contents of larvae of the black soldier fly (BSF), Hermetia illucens L. (Diptera: Stratiomyidae). Neonate larvae were fed with a low (NC1), intermediate (NC2), or high nutrient concentration (NC3), and with four rearing densities (50, 100, 200, or 400 larvae per container). Two feeding regimes (FR) were tested: in FR1, the amount of diet added during the experiment was based on the visually estimated larval mass present, whereas in FR2, a fixed feeding ration of 0.6 g of food per larva was applied at the start. FR1 resulted in food limitation, resulting in significantly lower body crude protein content on diet NC1 than on NC2 at larval densities 100 and 200. Larval crude fat content was higher on diets with higher nutrient concentration and at lower larval densities. For FR2, development time was shorter on diets with higher nutrient concentration and at lower larval densities. Individual larval weight and total larval yield increased with higher nutrient concentration at all four larval densities. At lower nutrient concentration, higher larval density resulted in higher individual larval weight and total larval yield, revealing an interaction between larval density and dietary quality. Larval crude protein content was higher at lower densities and lower nutrient concentration. Larval crude fat was higher at higher larval densities and nutrient concentrations. This study indicates that larval protein content is regulated within narrow limits, whereas larval crude fat content is strongly affected by nutrient concentration and by larval density.

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“…1 ), sometimes referred to Anentome at the rank of genus or subgenus, has recently become a popular commodity in the ornamental pet industry ( Ng et al, 2016a , 2016b ). The ability of this species to tolerate still waters ( Brandt, 1974 ) has been a significant factor in their adaptability to captive conditions ( Coelho, Dinis & Reis, 2013 ). Commonly known as “assassin snails” among other names for their voracious appetite for other gastropods, they are non-selective predators and scavengers of a wide variety of gastropods, including those larger than themselves, but may also feed on fish eggs and shrimp ( Bogan & Hanneman, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

“…Little is known about the anatomy and biology of Clea , with much of what is to be found in the published record relating primarily to taxonomy and distribution, although interest in the life history and ecology of the genus has grown with their increasing popularity as aquarium pets ( Monks, 2009 ; SiputKuning Journal, 2010 ; Coelho, Dinis & Reis, 2013 ). In addition, Clea nigricans A. Adams, 1855 has been used to explore the potential impact of climate change on tropical freshwater systems ( Polgar et al, 2015 ), and Clea helena has been touted as a possible model for developmental and environmental physiology ( Newel & Bourne, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Quid estClea helena?Evidence for a previously unrecognized radiation of assassin snails (Gastropoda: Buccinoidea: Nassariidae)

Strong

Galindo

Kantor

2017

PeerJ

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The genus Clea from SE Asia is from one of only two unrelated families among the megadiverse predatory marine Neogastropoda to have successfully conquered continental waters. While little is known about their anatomy, life history and ecology, interest has grown exponentially in recent years owing to their increasing popularity as aquarium pets. However, the systematic affinities of the genus and the validity of the included species have not been robustly explored. Differences in shell, operculum and radula characters support separation of Clea as presently defined into two distinct genera: Clea, for the type species Clea nigricans and its allies, and Anentome for Clea helena and allies. A five-gene mitochondrial (COI, 16S, 12S) and nuclear (H3, 28S) gene dataset confirms the placement of Anentome as a somewhat isolated offshoot of the family Nassariidae and sister to the estuarine Nassodonta. Anatomical data corroborate this grouping and, in conjunction with their phylogenetic placement, support their recognition as a new subfamily, the Anentominae. The assassin snail Anentome helena, a popular import through the aquarium trade so named for their voracious appetite for other snails, is found to comprise a complex of at least four species. None of these likely represents true Anentome helena described from Java, including a specimen purchased through the aquarium trade under this name in the US and one that was recently found introduced in Singapore, both of which were supported as conspecific with a species from Thailand. The introduction of Anentome “helena” through the aquarium trade constitutes a significant threat to native aquatic snail faunas which are often already highly imperiled. Comprehensive systematic revision of this previously unrecognized species complex is urgently needed to facilitate communication and manage this emerging threat.

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Effect of Diet and Stocking Densities on Life History Traits of Clea helena (Philippi 1847) Reared in Captivity

Cited by 12 publications

References 8 publications

Macroinvertebrate trophic structure on waterfalls in Borneo

Macroinvertebrate trophic structure on waterfalls in Borneo

Influence of larval density and dietary nutrient concentration on performance, body protein, and fat contents of black soldier fly larvae (Hermetia illucens)

Quid estClea helena?Evidence for a previously unrecognized radiation of assassin snails (Gastropoda: Buccinoidea: Nassariidae)

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