Morphometric prediction of cannibalism in larviculture of orange-spotted grouper, Epinephelus coioides

Hseu, Jinn–Rong; Chang, Hui-Fen; Ting, Yun-Yuan

doi:10.1016/s0044-8486(02)00315-0

Cited by 32 publications

(58 citation statements)

References 14 publications

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“…These scores compare to those of highly cannibalistic species such as barramundi Lates calcarifer (Parazo et al 1991), northern pike Esox lucius (Bry et al 1992;Ziliukiene and Ziliukas 2006), tunas (Sawada et al 2005) and groupers Epinephelus spp. (Hseu et al 2003(Hseu et al , 2004(Hseu et al , 2007. Cannibals of P. punctifer in the present study never consumed prey as large as allowed by their mouth dimensions, possibly because stomach capacity was limiting.…”

Section: Morphological Constraints On Cannibalism and Prey Size Prefementioning

confidence: 55%

“…Living Resour. 24, 379-390 (2011) Sogard and Olla 1994;Hseu et al 2003Hseu et al , 2004. In general, during the larval and juvenile stages there is a positive allometric growth of body depth (or width) and a negative allometric growth of mouth dimensions, which altogether force cannibals to select prey that are increasingly smaller relative to their own size (Hecht and Pienaar 1993;Baras and Jobling 2002).…”

Section: Introductionmentioning

confidence: 99%

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How many meals a day to minimize cannibalism when rearing larvae of the Amazonian catfishPseudoplatystoma punctifer? The cannibal’s point of view

Baras

Aguila

Naranjos

et al. 2011

Aquat. Living Resour.

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-Meal frequency is a key parameter in fish larviculture, especially in highly cannibalistic species. Knowledge of the biological bases of cannibalism (growth capacity of cannibals, morphological constraints on cannibalism, prey size preference) can help predicting the risks of cannibalism for different feeding schedules under culture conditions. This study relied on the day-by-day analysis of prey size preference and bioenergetics of individual cannibals of the catfish Pseudoplatystoma punctifer (8-65 mm standard length, SL, 0.5-400 mg dry mass, DM) at 28.5• C under 12L:12D. The results were equated with the ontogenetic variations of morphological factors (head and mouth width) and feed efficiency of larvae feeding on Artemia nauplii, in order to calculate the risks of cannibalism among fish fed 2-7 daily meals. The predation capacities of P. punctifer were highest at 8 mm SL and decreased in larger fish (largest prey = 86% and 70% SL in fish of 8 and >30 mm SL, respectively). Cannibals of increasing size preferred increasingly smaller prey relative to their own size, but also to their predation capacities. These morphological and behavioural constraints were largely compensated for by bioenergetics performance. Cannibals consumed high daily food rations (as high as 171 and 29% DM in fish <1 and >300 mg DM, respectively), exhibited high gross conversion efficiencies (0.50-0.55 and about 0.70, in fish <1 and >30 mg DM, respectively), and grew rapidly (90 and 18% DM day −1 in fish <1 and >300 mg DM, respectively). The growth advantage of cannibals over siblings fed Artemia nauplii was decisive, except for high meal frequencies (6-7 daily meals). This study supports the view that the risk of cannibalism and adequate feeding strategies can be largely predicted in a particular fish species if the morphological, behavioural and bioenergetics bases of cannibalism are examined altogether in an ontogenetic perspective.

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Section: Morphological Constraints On Cannibalism and Prey Size Prefementioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

How many meals a day to minimize cannibalism when rearing larvae of the Amazonian catfishPseudoplatystoma punctifer? The cannibal’s point of view

Baras

Aguila

Naranjos

et al. 2011

Aquat. Living Resour.

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“…Because of size-dependence of type II cannibalism, substantial research has been done on morphometric assessments of the prevalence of cannibalism depending on the ratio of the mouth-dimensions of cannibals and the body dimensions of victims (Folkvord and Otterå 1993;Mélard et al 1996;Hseu et al 2003b;Fessehaye et al 2005;Mandiki et al 2007;Ribeiro and Qin 2013). Due to species-dependent morphological differences, the variability of dimensions during ontogeny and behaviour typical of a given species, diverse mathematical models are applied.…”

Section: Size-sortingmentioning

confidence: 99%

“…Due to species-dependent morphological differences, the variability of dimensions during ontogeny and behaviour typical of a given species, diverse mathematical models are applied. The most commonly used models include those based on direct measurements of total length (TL) of cannibals and their prey or models based on such parameters as mouth width (MW), mouth gape (MG), body depth (BD) of a prey, head depth (HD) of a prey and head width (HW) of a prey (Folkvord and Otterå 1993;Baras and Dalmeida 2001;Hseu 2002;Kailasam et al 2002;Kestemont et al 2003;Hseu et al 2003b;Fessehaye et al 2005;Wallat et al 2005;Hseu et al 2007;Policar et al 2013;Baras et al 2014;Hseu and Huang 2014;Ribeiro and Qin 2015).…”

Section: Size-sortingmentioning

confidence: 99%

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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Cannibalism is a common phenomenon that occurs in over 30 fish families. Most of the species are valuable objects of aquaculture and cannibalism is highly undesirable. Cannibalism is an aggressive behaviour, which can be caused by stress induced by various population and environmental factors and can occur in two main forms: early larval and late juvenile (or adult). Each of these forms can lead to severe losses of stock. Losses are caused not only by fish eating each other, but also by an increase in the number of infections (the result of body surface damage). It is important to understand the phenomenon of cannibalism in order to properly prevent, diagnose and reduce it. The main aim of this study was to present and examine some of the well-examined methods of cannibalism mitigation. Most of the methods consist of creating rearing conditions similar to natural conditions and to reduce stress. Moreover, because of large interspecies differences, similar methods can result in different effects depending on the species. Additional studies are needed to better understand the biology of each cultured species with particular emphasis on the impact of domestication, as well as to improve fish rearing conditions.

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“…In larger fish, the victims are swallowed whole and cannibalism is governed by specific morphological restrictions (reviews in Hecht and Pienaar 1993;Folkvord 1997;Baras and Jobling 2002;Baras 2013). Information on the allometric variations of mouth and body dimensions has been used often to predict the occurrence or risk of cannibalism (Hecht and Appelbaum 1988;Brabrand 1995;Hseu et al 2003Hseu et al , 2004Hseu et al , 2007Hseu and Huang 2014). In some cases, cannibalistic fishes have been found to ingest siblings near the maximal possible size (e.g., largemouth bass Micropterus salmoides, Johnson and Post 1996; redtail catfish Hemibagrus nemurus, Baras et al 2013), whereas this "maximalistic" behaviour is infrequent with other types of piscivory (Juanes 1994(Juanes , 2003Juanes et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Do cannibalistic fish forage optimally? An experimental study of prey size preference, bioenergetics of cannibalism and their ontogenetic variations in the African catfishHeterobranchus longifilis

Baras¹,

Dugué²,

Legendre³

2014

Aquat. Living Resour.

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-This study relied on the day-by-day analysis of bioenergetics and prey size preference in isolated cannibals of the African catfish Heterobranchus longifilis (13-57 mm standard length, 3-500 mg dry body mass, n = 153) that were offered ad libitum conspecific prey of adequate sizes in small-sized (2-L) environments under controlled conditions (12L:12D, 30• C). In these conditions, cannibals of increasing body size selected preferentially prey of decreasing size relative to their own, and increasingly closer to the optimal prey size (producing the highest gross conversion efficiency). The role of experience in cannibalism was found of secondary importance relative to body size, both as regards food intake and prey size selectivity. These results indicate that in environments that minimize the escape capacities of their potential victims, as applies to most aquacultural contexts, fish exercising cannibalism tend to forage optimally, which has rarely been evidenced for piscivorous behaviour. The present study further highlights that H. longifilis possesses a very high capacity for growth, which originates from the combination of high food intake and very high conversion efficiency, and makes this species of utmost interest for aquaculturists wherever fast growth is desirable, but also extremely prone to cannibalism wherever feeding schedules are inadequate.

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Morphometric prediction of cannibalism in larviculture of orange-spotted grouper, Epinephelus coioides

Cited by 32 publications

References 14 publications

How many meals a day to minimize cannibalism when rearing larvae of the Amazonian catfishPseudoplatystoma punctifer? The cannibal’s point of view

How many meals a day to minimize cannibalism when rearing larvae of the Amazonian catfishPseudoplatystoma punctifer? The cannibal’s point of view

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Do cannibalistic fish forage optimally? An experimental study of prey size preference, bioenergetics of cannibalism and their ontogenetic variations in the African catfishHeterobranchus longifilis

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