Discovery of the oldest<i>Gobius</i>(Teleostei, Gobiiformes) from a marine ecosystem of Early Miocene age

Reichenbacher, Bettina; Gregorová, Růžena; Holcová, Katarı́na; Šanda, Radek; Vukić, Jasna; Přikryl, Tomáš

doi:10.1080/14772019.2017.1313323

Cited by 19 publications

(16 citation statements)

References 54 publications

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“…This suggests that CRFs may provide a substantially higher input of pelagically fuelled biomass to coral reefs, as fewer offspring are lost to the pelagic environment. In this context, the sudden appearance of fossilised gobiid remains from the early Miocene (Reichenbacher et al , ), may further support the important role of CRFs on coral reefs, as the early Miocene marks the rise of the high‐turnover, highly diverse, coral‐dominated reefs we know today (Bellwood et al , ), Therefore, CRFs may support biomass of higher trophic levels on coral reefs through high rates of somatic and reproductive energy turnover.…”

Section: Ecology and Functional Role Of Crfsmentioning

confidence: 97%

The hidden half: ecology and evolution of cryptobenthic fishes on coral reefs

et al. 2018

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Teleost fishes are the most diverse group of vertebrates on Earth. On tropical coral reefs, their species richness exceeds 6000 species; one tenth of total vertebrate biodiversity. A large proportion of this diversity is composed of cryptobenthic reef fishes (CRFs): bottom-dwelling, morphologically or behaviourally cryptic species typically less than 50 mm in length. Yet, despite their diversity and abundance, these fishes are both poorly defined and understood. Herein we provide a new quantitative definition and synthesise current knowledge on the diversity, distribution and life history of CRFs. First, we use size distributions within families to define 17 core CRF families as characterised by the high prevalence (>10%) of small-bodied species (<50 mm). This stands in strong contrast to 42 families of large reef fishes, in which virtually no small-bodied species have evolved. We posit that small body size has allowed CRFs to diversify at extremely high rates, primarily by allowing for fine partitioning of microhabitats and facilitation of allopatric reproductive isolation; yet, we are far from understanding and documenting the biodiversity of CRFs. Using rates of description since 1758, we predict that approximately 30 new species of cryptobenthic species will be described per year until 2050 (approximately twice the annual rate compared to large fishes). Furthermore, we predict that by the year 2031, more than half of the described coral reef fish biodiversity will consist of CRFs. These fishes are the 'hidden half' of vertebrate biodiversity on coral reefs. Notably, global geographic coverage and spatial resolution of quantitative data on CRF communities is uniformly poor, which further emphasises the remarkable reservoir of biodiversity that is yet to be discovered. Although small body size may have enabled extensive diversification within CRF families, small size also comes with a suite of ecological challenges that affect fishes' capacities to feed, survive and reproduce; we identify a range of life-history adaptations that have enabled CRFs to overcome these limitations. In turn, these adaptations bestow a unique socio-ecological role on CRFs, which includes a key role in coral reef trophodynamics by cycling trophic energy provided by microscopic prey to larger consumers. Although small in body size, the ecology and evolutionary history of CRFs may make them a critical component of coral-reef food webs; yet our review also shows that these fishes are highly susceptible to a variety of anthropogenic disturbances. Understanding the consequences of these changes for CRFs and coral reef ecosystems will require us to shed more light on this frequently overlooked but highly diverse and abundant guild of coral reef fishes.

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Section: Ecology and Functional Role Of Crfsmentioning

confidence: 97%

The hidden half: ecology and evolution of cryptobenthic fishes on coral reefs

et al. 2018

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“…For now, the oldest member of modern Gobiiformes with five branchiostegals in the fossil record is the gobiid †Gobius jarosi Přikryl andReichenbacher, 2017 in Reichenbacher et al (2017) from the lower Miocene of Central Europe (Czech Republic). Phylogenetic analyses based on a combination of morphology, and molecular data will be necessary to more accurately understand the phylogenetic relationships of the many different extant and extinct gobiiform fishes from Europe.…”

Section: Discussionmentioning

confidence: 99%

Revision of so-called Pomatoschistus (Gobiiformes, Teleostei) from the late Eocene and early Oligocene

Gierl

Reichenbacher

2017

Palaeontologia Electronica

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“…Although goby lineages are estimated to have appeared in the latter half of the Eocene, approximately 48.7–36.2 million years ago 15 (see also Reichenbacher et al . 16 for the oldest goby fossil dating 19.1–20.4 million years ago) and thus are far more modern than the transitional animals of the Paleozoic, mudskippers could still provide insights into how land invasion would alter body structure and other life history traits. Despite the fact that most mudskippers are highly euryhaline 17,18 , their occurrence in low salinity waters has only been sporadically reported (see Discussion).…”

Section: Introductionmentioning

confidence: 99%

Land Invasion by the Mudskipper, Periophthalmodon septemradiatus, in Fresh and Saline Waters of the Mekong River

Van

Tran

Dinh

et al. 2019

Sci Rep

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There has been a long-standing controversy about whether vertebrates emerged in the Paleozoic from marine or freshwater environments. Several hypotheses have proposed coastal, estuarine and riparian areas as sites of the transition. Here, we report the ecology of an amphibious fish Periophthalmodon septemradiatus, which we presume is in the process of niche expansion into terrestrial habitats from estuarine to freshwater environments along the Mekong River, Vietnam. Adult fish are highly terrestrial and have not been observed to venture into water during our survey. Courtship behaviour was observed, and fertilised eggs were recovered from burrows in both brackish and freshwater environments. The smallest fish collected at 12, 96, and 148 km from the river mouth were juveniles shortly after starting an amphibious life. These findings suggest reproduction in both brackish and freshwater environments. In contrast, otolith Sr:Ca ratio indicates larval hatching only in brackish water. Analysis of a 940-base pair (bp) segment of the mitochondrial cytochrome c oxidase subunit II and a 934-bp segment of the mitochondrial D-loop demonstrated no genetic segregation between populations. The fish may provide a unique opportunity to study how ambient salinity affects the biology and ecology of a living vertebrate during transition from water to land.

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Discovery of the oldestGobius(Teleostei, Gobiiformes) from a marine ecosystem of Early Miocene age

Cited by 19 publications

References 54 publications

The hidden half: ecology and evolution of cryptobenthic fishes on coral reefs

The hidden half: ecology and evolution of cryptobenthic fishes on coral reefs

Revision of so-called Pomatoschistus (Gobiiformes, Teleostei) from the late Eocene and early Oligocene

Land Invasion by the Mudskipper, Periophthalmodon septemradiatus, in Fresh and Saline Waters of the Mekong River

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