From fresh water to the slope: fish community ecology in the Rio de la Plata and the sea beyond

García, Mirta Lidia; Jaureguízar, Andrés Javier; Protogino, Lucila Cristina

doi:10.3856/vol38-issue1-fulltext-8

Cited by 34 publications

(21 citation statements)

References 29 publications

(35 reference statements)

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“…For example, of the major North Sea fish families (e.g., Daan et al ), carbonate polymorphs can be predicted only for the Pleuronectidae (righteye flounders) and Carangidae; other families, including the Gadidae (codfishes), Clupeidae (herrings and sardines), Scombridae (tunas and mackerels), and Ammoditydae (sandlances) remain unrepresented. Similarly, of the important Patagonian Shelf fish families (e.g., García et al ), products can be predicted only for the Carangidae; the Merlucciidae (hakes), Percophidae (duckbills), and Congridae (conger eels) being among those that are unrepresented. These high latitude fish communities thus represent an obvious target for future research—particularly given their importance in the fisheries industry (e.g., Watson ) and the consequent potential for their overexploitation to result in shifts in carbonate production regimes (Salter et al ).…”

Section: Discussionmentioning

confidence: 99%

Calcium carbonate production by fish in temperate marine environments

Salter

Perry

Smith

2019

Limnology & Oceanography

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Marine bony fishes are an important source of calcium carbonate with relevance to sediment production and inorganic carbon cycling. However, knowledge of the production and fate of these carbonates is based primarily on data from warm‐water reef fishes, with efforts to assess global‐scale implications constrained by assumptions that this small cross section of the global fish community is widely representative. Here we test the extent to which temperature influences fish carbonate mineralogy and morphology by comparing products from temperate settings (20 species at temperatures spanning 10–18°C) against existing data (23–27°C). Overall, carbonate products were mineralogically, compositionally, and morphologically similar throughout the thermal range, and in most cases, we observed no differences within species (18 vs. 24°C) or families (10 vs. 25°C). Confirmation of within‐family consistency over large thermal gradients is significant because: (1) it facilitates a substantial range expansion over which fish carbonate production models can be constructed, even where family‐level product data are geographically limited; and (2) it implies that the solubility of products from any given fish family varies only due to local carbonate saturation states at excretion (and not crystallographic differences). The only exception was in two members of the Labridae (wrasses), which produced low‐Mg calcite (LMC) and minor amorphous calcium–magnesium carbonate (ACMC) at 10°C; the inverse of products from confamilials at 25°C. This finding could have significant implications for understanding the role of fish carbonates globally because ACMC is a highly unstable carbonate polymorph, whereas LMC is very stable.

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Section: Discussionmentioning

confidence: 99%

Calcium carbonate production by fish in temperate marine environments

Salter

Perry

Smith

2019

Limnology & Oceanography

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“…These transition zones were not static but expanded and contracted between the seasons and were driven primarily by salinity. A later trawl study covering the freshwater to marine environment of the Río de la Plata system showed that the fish community could be divided into four assemblages along the riverine-marine gradient, namely riverine, estuarine, shelf and slope assemblage (Garcia et al, 2010). According to these authors, bottom salinity and temperature were the primary environmental variables driving the differences in fish assemblage structure between the four identified areas.…”

Section: Salinitymentioning

confidence: 99%

Why are there so few freshwater fish species in most estuaries?

Whitfield

2015

Journal of Fish Biology

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The freshwater fish assemblage in most estuaries is not as species rich as the marine assemblage in the same systems. Coupled with this differential richness is an apparent inability by most freshwater fish species to penetrate estuarine zones that are mesohaline (salinity: 5·0-17·9), polyhaline (salinity: 18·0-29·9) or euhaline (salinity: 30·0-39·9). The reason why mesohaline waters are avoided by most freshwater fishes is difficult to explain from a physiological perspective as many of these species would be isosmotic within this salinity range. Perhaps, a key to the poor penetration of estuarine waters by freshwater taxa is an inability to develop chloride cells in gill filament epithelia, as well as a lack of other osmoregulatory adaptations present in euryhaline fishes. Only a few freshwater fish species, especially some of those belonging to the family Cichlidae, have become fully euryhaline and have successfully occupied a wide range of estuaries, sometimes even dominating in hyperhaline systems (salinity 40+). Indeed, this review found that there are few fish species that can be termed holohaline (i.e. capable of occupying waters with a salinity range of 0-100+) and, of these taxa, there is a disproportionally high number of freshwater species (e.g. Cyprinodon variegatus, Oreochromis mossambicus and Sarotherodon melanotheron). Factors such as increased competition for food and higher predation rates by piscivorous fishes and birds may also play an important role in the low species richness and abundance of freshwater taxa in estuaries. Added to this is the relatively low species richness of freshwater fishes in river catchments when compared with the normally higher diversity of marine fish species for potential estuarine colonization from the adjacent coastal waters. The almost complete absence of freshwater fish larvae from the estuarine ichthyoplankton further reinforces the poor representation of this guild within these systems. An explanation as to why more freshwater fish species have not become euryhaline and occupied a wide range of estuaries similar to their marine counterparts is probably due to a combination of the above described factors, with physiological restrictions pertaining to limited salinity tolerances probably playing the most important role.

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“…At La Plata River (AR), L. grossidens is frequent and abundant in the riverine portion of the estuary, near the estuarine area (García et al 2010). In the Patos Lagoon Estuary, the species occurs throughout the year (Buckup 1984, Chao et al 1985, Ramos 2005, and was among the ten most abundant species of shallow waters , bottom trawl (Vieira 2006) and dominated the pelagic assemblage (Vieira & Castello 1997).…”

Section: Estuarine Populationsmentioning

confidence: 99%

Review and consideration on habitat use, distribution and life history of Lycengraulis grossidens (Agassiz, 1829) (Actinopterygii, Clupeiformes, Engraulididae)

Giacometti

Vieira

2013

Biota Neotrop.

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Abstract:In this paper, we present a summary of the current knowledge of Lycengraulis grossidens, a widely distributed coastal fish that occurs from Belize to Argentina. This species is abundant in estuaries along the Southwest Atlantic Coast and is important for recreational fishing, and as bycatch of shrimp fisheries. We compiled data available on taxonomy, phylogeny, ecology, fisheries and organized conceptually the life cycle of the species according to modern estuarine-use classification. Our review showed that along its geographic distribution and inside some particular environments (i.e., estuaries and costal lagoons) the species have been classified in a variety of ways in order to describe the remarkable complexity of habitat use that varies from freshwater resident, anadromous, marine migrant, estuarine resident, marine stragglers, catadromous to semicatadromous. We conclude that L. grossidens is able to reproduce either in freshwater or estuarine water and postulate that it has a high plasticity in habitat use and life history, with migratory and resident contingents in the same local population. There seems to be a latitudinal change in migratory behavior of this species along the South America Coast, prevailing anadromous or semi-anadromous pattern at higher latitudes and marine migrants at the tropical northeast coast of Brazil. Resumo: Neste trabalho é apresentada uma compilação do conhecimento atual de Lycengraulis grossidens, uma espécie de peixe amplamente distribuído pela costa oeste do Atlântico Sul, ocorrendo de Belize a Argentina. Esta espécie é abundante nos estuários e tem importância na pesca recreacional além de sofrer impacto da pesca do camarão. São revisados dados publicados sobre a taxonomia, filogenia, ecologia, pesca e ciclo de vida da espécie. Nossa revisão mostrou que, ao longo de sua distribuição, a espécie tem sido classificada de várias formas na tentativa de descrever seu uso do habitat, desde residentes de água doce, anádromos, marinhos migrantes, estuarinos residentes, catádromo e semi-catádromo. Conclui-se que a espécie é capaz de se reproduzir em água doce ou salgada, com uma alta plasticidade no uso do habitat e na sua história de vida, com componentes migrantes e residentes no mesmo local. Além disso, parece haver uma mudança no comportamento migratório da espécie em diferentes latitudes, mostrando um padrão anádromo ou semi-anádromo nas maiores latitudes e marinhos migrantes ao longo da costa tropical do Brasil. Palavras-chave: contingentes, estuarino residente, anádromo, catádromo, residente de água doce, revisão.

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From fresh water to the slope: fish community ecology in the Rio de la Plata and the sea beyond

Cited by 34 publications

References 29 publications

Calcium carbonate production by fish in temperate marine environments

Calcium carbonate production by fish in temperate marine environments

Why are there so few freshwater fish species in most estuaries?

Review and consideration on habitat use, distribution and life history of Lycengraulis grossidens (Agassiz, 1829) (Actinopterygii, Clupeiformes, Engraulididae)

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