Larval Duration, Settlement, and Larval Growth Rates of the Endangered Tidewater Goby (<i>Eucyclogobius newberryi</i>) and the Arrow Goby (<i>Clevelandia ios</i>) (Pisces, Teleostei)

Spies, Brenton T.; Tarango, Berenice C.; Steele, Mark A.

doi:10.3160/0038-3872-113.3.165

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…Pigmentation in preserved material of larval and early juvenile fish is very similar in both species and was described in Swift et al [ 16 ] and Watson [ 93 ] from material of E . kristinae and by Spies et al [ 94 ] for E . newberryi from San Gregorio Creek lagoon, San Mateo County.…”

Section: Taxonomymentioning

confidence: 93%

A New Species of the Bay Goby Genus Eucyclogobius, Endemic to Southern California: Evolution, Conservation, and Decline

Swift¹,

Spies²,

Ellingson³

et al. 2016

PLoS ONE

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A geographically isolated set of southern localities of the formerly monotypic goby genus Eucyclogobius is known to be reciprocally monophyletic and substantially divergent in mitochondrial sequence and nuclear microsatellite-based phylogenies relative to populations to the north along the California coast. To clarify taxonomic and conservation status, we conducted a suite of analyses on a comprehensive set of morphological counts and measures from across the range of Eucyclogobius and describe the southern populations as a new species, the Southern Tidewater Goby, Eucyclogobius kristinae, now separate from the Northern Tidewater Goby Eucyclogobius newberryi (Girard 1856). In addition to molecular distinction, adults of E. kristinae are diagnosed by: 1) loss of the anterior supratemporal lateral-line canals resulting in higher neuromast counts, 2) lower pectoral and branched caudal ray counts, and 3) sets of measurements identified via discriminant analysis. These differences suggest ecological distinction of the two species. Previous studies estimated lineage separation at 2–4 million years ago, and mitochondrial sequence divergence exceeds that of other recognized fish species. Fish from Santa Monica Artesian Springs (Los Angeles County) northward belong to E. newberryi; those from Aliso Creek (Orange County) southward constitute E. kristinae. The lagoonal habitat of Eucyclogobius has been diminished or degraded, leading to special conservation status at state and federal levels beginning in 1980. Habitat of the newly described species has been impacted by a range of anthropogenic activities, including the conversion of closing lagoons to open tidal systems in the name of restoration. In the last 30 years, E. kristinae has only been observed in nine intermittently occupied lagoonal systems in northern San Diego County; it currently persists in only three sites. Thus, the new species is in imminent danger of extinction and will require ongoing active management.

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Section: Taxonomymentioning

confidence: 93%

A New Species of the Bay Goby Genus Eucyclogobius, Endemic to Southern California: Evolution, Conservation, and Decline

Swift¹,

Spies²,

Ellingson³

et al. 2016

PLoS ONE

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show abstract

“…al 2014), it was assumed that increments in otoliths of the arrow goby were also deposited daily. Furthermore, otolith-based estimates of larval traits appear to be suitable for both species due to a strong relationship between body length and age (Spies et al 2014).…”

Section: Collections and Otolith Analysismentioning

confidence: 99%

“…Increment measurements were made along the longest axis, from the core to the outermost complete The settlement band was interpreted as the point where the daily increment transitioned distinctly in band width (Wilson & McCormick 1999, Spies et al 2014. Date of settlement was found by subtracting the number of post-settlement increments counted for each otolith from the date the fish was collected.…”

Section: Collections and Otolith Analysismentioning

confidence: 99%

“…The first dark ring outside the core was considered to be the hatch mark (Hellmair 2010), although this interpretation has not been validated. Average pre-settlement growth rates (larval growth rate) were estimated from otolith growth as a proxy for larval somatic growth, by dividing the otolith radius to the settlement mark by the age at settlement (McCormick & Molony 1995, Spies et al 2014.…”

Section: Collections and Otolith Analysismentioning

confidence: 99%

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Effects of temperature and latitude on larval traits of two estuarine fishes in differing estuary types

Spies¹,

Steele²

2016

Mar. Ecol. Prog. Ser.

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Variations in abiotic conditions across large latitudinal gradients can strongly influence the early life history of coastal marine organisms. We investigated the effects of temperature and latitude on the larval traits of 2 estuarine fish species. The arrow goby Clevelandia ios and the endangered tidewater goby Eucyclogobius newberryi were studied in 18 estuaries along the coast of California, spanning ~8 degrees of latitude. These 2 species were selected because of their dissimilar preferences for estuary type: the arrow goby prefers cooler, fully tidal systems, whereas the tidewater goby prefers warmer lagoons that experience some degree of seasonal isolation from the ocean. Recently settled individuals were collected from July to October 2011, and temperatures within each estuary were recorded to determine how temperature affected larval duration, settlement, and growth rates. Temperatures were more variable among estuaries inhabited by the tidewater goby (10°C range) than among those inhabited by the arrow goby (5°C range). Larval traits of both species differed among sites, but more so for the tidewater goby, a difference that was tied to the greater differences in temperatures among sites in the seasonally closed estuaries it inhabited. In both species, fish that experienced warmer temperatures had shorter larval durations and faster growth rates and were smaller at settlement. Since the length of the larval period has been related to survival and dispersal distance, future variations in temperature due to climate change could have predictable influences on population density and connectivity in estuarine species.

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Cryptic Lives of Conspicuous Animals: Otolith Chemistry Chronicles Life Histories of Coastal Lagoon Fishes

et al. 2020

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Larval Duration, Settlement, and Larval Growth Rates of the Endangered Tidewater Goby (Eucyclogobius newberryi) and the Arrow Goby (Clevelandia ios) (Pisces, Teleostei)

Cited by 3 publications

References 24 publications

A New Species of the Bay Goby Genus Eucyclogobius, Endemic to Southern California: Evolution, Conservation, and Decline

A New Species of the Bay Goby Genus Eucyclogobius, Endemic to Southern California: Evolution, Conservation, and Decline

Effects of temperature and latitude on larval traits of two estuarine fishes in differing estuary types

Cryptic Lives of Conspicuous Animals: Otolith Chemistry Chronicles Life Histories of Coastal Lagoon Fishes

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