Kestratherina brevirostris, a new genus and species of silverside (Pisces : Atherinidae) with a review of atherinid marine and estuarine genera of southern Australia

Pavlov, Aleksandar; Ivantsoff, Walter; Last, PR; Crowley, L E L M

doi:10.1071/mf9880385

Cited by 11 publications

(4 citation statements)

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“…Prince & Potter 1983; Potter et al 1986c ). Craterocephalus honoriae and Atherinosoma microstoma , which is closely related to A. elongata ( Pavlov et al 1988 ), also complete their short lifecycles in southeastern Australian estuaries ( Potter et al 1986c ; Molsher et al 1994 ). As with the Atherinidae, the other most abundant family in the shallows of southwestern Australian estuaries, the Gobiidae, is very numerous in estuaries in southeastern Australia ( Connolly 1994; Pollard 1994b; Gray et al 1996 ).…”

Section: Comparisons With Southeastern Australian Estuariesmentioning

confidence: 99%

“…data). Atherinosoma microstoma , which occurs in eastern Australia and is closely related to A. elongata ( Pavlov et al 1988 ), is likewise an estuarine species and has a one year lifecycle ( Potter et al 1986b ; Molsher et al 1994 ). However, A. butcheri and A. caudavittata , which in southwestern Australia are restricted to estuaries ( Potter et al 1990 , 1994), and P. speculator and C. macrocephalus , which are each represented by both estuarine and marine populations ( Hyndes et al 1992b ; Laurenson et al 1993 ; Ayvazian et al 1994 ), attain much larger sizes and live to far greater ages than the above atherinids and gobiids.…”

Section: Lifecycles Of the Most Abundant Speciesmentioning

confidence: 99%

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Characteristics of the ichthyofaunas of southwestern Australian estuaries, including comparisons with holarctic estuaries and estuaries elsewhere in temperate Australia: A review

Potter

Hyndes

1999

Australian Journal of Ecology

155

141

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Data on the species compositions and the ages, sizes, reproductive biology, habitats and diets of the main species in the ichthyofaunas of seven estuaries in temperate southwestern Australia have been collated. Twenty‐two species spawn in these estuaries, of which 21 complete their lifecycles in the estuary. The latter group, which includes several species of atherinids and gobies with short lifecycles, make far greater contributions to the total numbers of fish in the shallows of these estuaries than in those of holarctic estuaries, such as the Severn Estuary in the United Kingdom. This is presumably related in part to far less extreme tidal water movements and the maintenance of relatively high salinities during the dry summers, and thus to more favourable conditions for spawning and larval development. However, since estuaries in southwestern Australia have tended to become closed for periods, there would presumably also have been selection pressures in favour of any members of marine species that were able to spawn in an estuary when that estuary became landlocked. Furthermore, the deep saline waters, under the marked haloclines that form in certain regions during heavy freshwater discharge in winter, act as refugia for certain estuarine species. The contributions of estuarine‐spawning species to total fish numbers in the shallows varied markedly from 33 or 34% in two permanently open estuaries to ≥ 95% in an intermittently open estuary, a seasonally closed estuary and a permanently open estuary on the south coast, in which recruitment of the 0 + age class of marine species was poor. The larger estuarine species can live for several years and reach total lengths of ~ 700 mm and some estuarine species move out into deeper waters as they increase in size. Several marine species use southwestern Australian estuaries as nursery areas for protracted periods. However, sudden, marked increases in freshwater discharge in winter and resultant precipitous declines in salinity in the shallows, and in other regions where haloclines are not formed, are frequently accompanied by rapid and pronounced changes in ichthyofaunal composition, partly due to the emigration of certain marine species. In contrast, the ichthyofaunal compositions of macrotidal holarctic estuaries undergo annual, cyclical changes, due largely to the sequential entry of the juveniles of different marine species for short periods. The ichthyofaunal compositions of the narrow entrance channels, wide basins and saline riverine reaches of large, permanently open southwestern Australian estuaries vary, reflecting the marked tendency for some species to be restricted mainly to one or two of these regions. Comparative data indicate that the characteristics determined for ichthyofaunas in southwestern Australian estuaries apply in general to estuaries elsewhere in temperate Australia.

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Section: Comparisons With Southeastern Australian Estuariesmentioning

confidence: 99%

Section: Lifecycles Of the Most Abundant Speciesmentioning

confidence: 99%

Characteristics of the ichthyofaunas of southwestern Australian estuaries, including comparisons with holarctic estuaries and estuaries elsewhere in temperate Australia: A review

Potter

Hyndes

1999

Australian Journal of Ecology

155

141

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“…Gobiid larvae were identified as P. olorum following genetic examination of a sub‐sample of specimens (collected for this study) that exhibited the full range of morphological characters and that were unambiguously identified as P. olorum (Close & Gouws, 2007). Atherinid larvae were identified as L. wallacei based on the identification of juvenile stages using a number of diagnostic characters (gill raker and premaxilla length, size of teeth, lateral process of premaxilla and swimbladder transparency and shape; Pavlov et al , 1998) and subsequent arrangement of a developmental series (based on similar morphological traits) from a positively identified juvenile to the smallest collected larva (Leis & Trnski, 1989).…”

Section: Methodsmentioning

confidence: 99%

Recruitment and growth of two small‐bodied resident fish species (Gobiidae and Atherinidae) in oligohaline, seasonally open lagoons

Davies

Trayler³

2010

Journal of Fish Biology

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Spatio-temporal recruitment patterns, growth and survival of the Swan River goby Pseudogobius olorum and western hardyhead Leptatherina wallacei are described from two small, coastal lagoons on the south coast of Western Australia. In these lagoons, estuarine salinity dynamics were relatively stable over much of the autumn-spring period when freshwater inputs from rivers were reduced and there was no oceanic connection. Preflexion and flexion stages of both fish species contributed strongly to population size structure in downstream reaches, whereas upstream reaches were dominated by postflexion larvae and juvenile stages. Spawning of both species was protracted and largely asynchronous, although the episodic presence of stronger preflexion and flexion cohorts suggested some synchronized spawning had occurred. Comparison with estuarine conditions over this period provided evidence that synchronized spawning may be related to temperature and salinity variations from a combination of freshwater inputs and periods of marine exchange. Uninterrupted growth and the progression of cohorts through to juvenile stages were consistent with the generally stable estuarine conditions. Larval and juvenile stages of both species were also tolerant of abrupt changes in salinity and temperature, which occurred due to a non-seasonal oceanic connection. These findings were consistent with the euryhaline nature of adults of both species.

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“…Overlap of character ranges may not always be indicative of intraspecific variability like that in A. lacunosus. Since a sister-species relationship is very common amongst the atherinids recently studied (Prince et al 1983;Ivantsoff et al 1987;Pavlov et al 1988), even species in geographical proximity should be examined for possible genetic as well as morphological differences. Ivantsoff's (1978) studies of populations of A. eendrachtensis suggest that there is a single species with several minor morphological trends in the five populations examined .3) 6-7 (6.4) 6-7 (6.4) 6 5-6 (5 .8) Anal fin rays 10-11 (10.7) 10-13 (11.5) 11-12 (11.5) 10-12 (11.2) 11-13 (11.9) Gill rakers Whilst it was not possible to draw conclusions from the electrophoretic analysis (based on only four specimens from widely separated localities), the electrophoretic data point to some population differences.…”

Section: Emendation and Remarksmentioning

confidence: 99%

Review of the Australian silverside fishes of the genus Atherinomorus (Atherinidae)

Ivantsoff¹,

Crowley²

1991

Mar. Freshwater Res.

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Previous studies of the genus Atherinomorus suggested that A. lacunosus was one species with a very wide range over the Indian and Pacific Oceans. Morphology (including osteology) and meristics of many populations of Atherinornorus were studied to test this hypothesis. The results indicate that there are two species pairs of Atherinomorus around the coast of Australia. Each of the four species can be distinguished by the combination of meristic and morphological characters. This study was supplemented with an electrophoretic analysis on a limited collection of fish from the western, northern and eastern coasts of Australia.

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Kestratherina brevirostris, a new genus and species of silverside (Pisces : Atherinidae) with a review of atherinid marine and estuarine genera of southern Australia

Cited by 11 publications

References 0 publications

Characteristics of the ichthyofaunas of southwestern Australian estuaries, including comparisons with holarctic estuaries and estuaries elsewhere in temperate Australia: A review

Characteristics of the ichthyofaunas of southwestern Australian estuaries, including comparisons with holarctic estuaries and estuaries elsewhere in temperate Australia: A review

Recruitment and growth of two small‐bodied resident fish species (Gobiidae and Atherinidae) in oligohaline, seasonally open lagoons

Review of the Australian silverside fishes of the genus Atherinomorus (Atherinidae)

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