Early life history of barramundi, Lates calcarifer (Bloch), in north-eastern Queensland

Russell, D. J.; Garrett, RN

doi:10.1071/mf9850191

Cited by 36 publications

(41 citation statements)

References 5 publications

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“…Miller et al 1985, Russell & Garrett 1985, McIvor & Odum 1988, Robertson & Duke 1990, Paterson & Whitfield 1996, Vance et al 1996, Lyse et al 1998, Yozzo & Smith 1998. However, this view is by no means universal.…”

Section: Introductionmentioning

confidence: 91%

Are there really few piscivorous fishes in shallow estuarine habitats?

Sheaves¹

2001

Mar. Ecol. Prog. Ser.

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Shallow estuarine habitats throughout the world are recognised as valuable nursery grounds for juvenile fishes. It is often suggested that this is due, at least in part, to the occurrence of low numbers of piscivorous fishes in these habitats. This idea is not confined to particular habitat types, but has been used in reference to a range of habitats, including both vegetated and unvegetated areas. I evaluate the proposition that there are few piscivorous fishes in shallow estuarine habitats, and suggest that the proposition is ill-defined, with little unequivocal supporting or contradictory evidence. To make any sense, the proposition must be evaluated relative to some other habitat, something often not addressed in previous studies. Additionally, including the full range of potentially piscivorous fishes is important if the role of predation is to be understood. Most studies have considered only large piscivorous fishes. This is unfortunate when the proposition logically relates to an advantage for small juvenile fishes. There is considerable evidence that, in addition to large piscivorous fishes, small juvenile fishes are extensively preyed upon both by juveniles of the large piscivorous species and by a range of other small species that include a large component of fish in their diets. In addition, many of the prey species may, themselves, switch opportunistically to piscivorous feeding. Not only are small piscivores numerous, but because of their size they are much more likely to access shallow waters than large piscivores. Even when the full range of piscivorous fishes are considered, it is not clear that the question of the abundance of piscivores in shallow waters should be the real focus of interest. Rather the crucial question is whether or not predator-induced mortality is reduced in shallow estuarine habitats.

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Section: Introductionmentioning

confidence: 91%

Are there really few piscivorous fishes in shallow estuarine habitats?

Sheaves¹

2001

Mar. Ecol. Prog. Ser.

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“…Vision is very important in barramundi larval feeding (Davis 1985;Russell and Garrett 1985;Barlow et al 1995). However, the development of the eye and the retinomotor response has not yet been examined in barramundi larvae.…”

Section: Introductionmentioning

confidence: 98%

Ontogenetic eye development and related behavioural changes in larvae and juveniles of barramundiLates calcarifer(Bloch)

Yahaya

Lim

Shaleh

et al. 2011

Marine and Freshwater Behaviour and Physiology

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Larvae and juveniles of barramundi Lates calcarifer (Bloch) were examined for the development of the retina, occurrence of the retinomotor response and retinal tapetum and change in eye size with age in days. The barramundi hatched with unpigmented non-functional eyes in which retinal cells had not yet differentiated into the various elements. Soon it was followed by rapid changes in the histology of the retina. Two-day-old larvae had a well-pigmented retina with area temporalis which would allow acute vision and prey attack in the nasal direction. At 10 days, rod cells and the retinal tapetum first appeared in the retina and the retinomotor response first occurred; these would allow feeding in dim light. The retinal tapetum moved in unison with the cones and the pigment epithelium during the retinomotor response. At 26 days, the horizontal cells were divided into two layers and the twin cones appeared. These changes in the eyes occurred concurrently or in anticipation of behavioural changes, such as the onset of the first feeding at 2 days, the shift of habitat from coastal waters to swamps at the notochord flexion stage at 7-15 days, the abrupt change in feeding behaviour from roving zooplanktivore to lurking predator at 25-30 days and a later shift of habitat from turbid swamps to open coastal or lake areas at the early juvenile stage.

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“…Movements such as the dispersal of mangrove or seagrass propagules link units of the same habitat type over a range of spatial scales (Drexler 2001), providing connections between patches that may be separated by considerable distances (De Lange & De Lange 1994). Other movements and migrations link quite disparate habitat components, often as integral components of life-history strategies (Russell & Garrett 1985, Barthem et al 1991, Bagarinao 1994. This is exemplified in the central role of migration in supporting nursery ground function.…”

Section: Movement and Migrationmentioning

confidence: 99%

Consequences of ecological connectivity: the coastal ecosystem mosaic

Sheaves¹

2009

Mar. Ecol. Prog. Ser.

306

216

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Connectivity links habitats in space and time. It is a key process that facilitates many life-history functions of myriad species in a variety of contexts over a wide range of scales. Perhaps its most obvious application is to the multifaceted linkages among the diverse habitat units comprising ecosystem complexes like the coastal ecosystem mosaic (CEM) -the tightly interlinked coastal, estuarine, wetland and freshwater habitats at the interface of land and sea. The ability to utilise this diversity of connected habitats is integral to the life histories of a broad spectrum of organisms, with connectivity between habitats being crucial to important functions like nursery utilisation. Although connectivity is an obvious feature of the CEM, investigation of its implications has largely been restricted to the migration of organisms. However, connectivity has much broader conceptual relevance. It is a pervasive and multifaceted process affecting and enabling the lives of organisms over the full range of conceptual scales, with ecosystem components connected by a diversity of factors, including physical and biological translocation of nutrients, ontogenetic, life history, spawning and feeding migrations, food-web dynamics, predator-prey interactions, and many more. All of these play crucial roles in structuring biological populations, communities and assemblages, and in driving the biological processes that support them. Moreover, connectivity is a prominent and necessary component of ecological concepts, ranging from estuarine dependence and metapopulation dynamics to foraging arena theory. Considering connectivity as a multifaceted process leads to specific hypotheses about the functioning of the CEM and similar ecosystem complexes. KEY WORDS: Connectivity · Coastal ecosystems · Estuarine · Wetland · Ecosystem interactionsResale or republication not permitted without written consent of the publisher

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Early life history of barramundi, Lates calcarifer (Bloch), in north-eastern Queensland

Cited by 36 publications

References 5 publications

Are there really few piscivorous fishes in shallow estuarine habitats?

Are there really few piscivorous fishes in shallow estuarine habitats?

Ontogenetic eye development and related behavioural changes in larvae and juveniles of barramundiLates calcarifer(Bloch)

Consequences of ecological connectivity: the coastal ecosystem mosaic

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