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87 results for “blenny”
Figure 1 in Homing behaviour of rock pool blenny Parablennius parvicornis (Pisces: Blenniidae)
Figure 1. Geographical location and spatial distribution of pools where individual of Parablennius parvicornis were caught (home pools) and displaced.
Data from: Extreme dentition does not prevent diet and tooth diversification within combtooth blennies (Ovalentaria: Blenniidae)
The dentition of fishes can be quite striking and is often correlated with a specific diet. Combtooth blennies have long incisiform oral teeth, unlike most actinopterygians. It has been suggested that the long tooth morphology is an adaptation for detritivory, but given the diversity of diets (detritus, coral polyps, polychaetes, and pieces of other fishes), are blenny teeth indeed monomorphic? Or does tooth variation associated with diet still exist at this extreme? To explore tooth and diet diversification, we used a new phylogenetic hypothesis of Blenniidae, measured tooth shape, number, and mode of attachment, and quantified blenniid diet. The ancestral diet of blennies contained detritus and diversified into many different diets, including almost exclusively detritivory. Our results reveal a dental cline that may be constrained by tooth shape, but has not prevented diet diversification. Ancestral state reconstruction of tooth morphologies suggests that the ancestor of blennies had many unattached teeth and featured transitions to fewer attached teeth, with several transitions back to attached or unattached teeth. The dentition of blenniids is not monotypic; rather it is diverse and small changes in tooth shape are accompanied by changes in size, number, attachment, and often diet.
Diversity and biogeography of Mediterranean freshwater blennies (Blenniidae, Salaria)
<p><strong>Aim</strong>: In the Mediterranean Biodiversity Hotspot freshwater fishes are key biogeographical indicators while their habitats are vulnerable to ongoing anthropogenic pressures. The freshwater blenny is a widespread endemic taxon in this area. However, our understanding of the overall diversity of specific populations and their phylogenetic relationships is sparse. Thus, we aim to investigate the genetic diversity, infer relationships among sampled populations related to major paleoenvironmental changes and suggest insights for future research and conservation targets.</p> <p><strong>Location</strong>: Mediterranean Basin</p> <p><strong>Methods</strong>: We studied 171 Salaria specimens from 51 rivers and lakes, and from 13 countries surrounding the Mediterranean Sea. For assessing the phylogenetic relationships among different locations, we used mtDNA d-loop and Intron S7 sequences. Furthermore, we inferred absolute divergence times as well as demographic changes using secondary calibrations and investigated the diversity within major lineages using haplotype networks as well as several geographical and genetic clustering methods.</p> <p><strong>Results</strong>: We found eight well differentiated lineages, each of which being confined to a particular geographic region. The onset of the freshwater blenny radiation was dated around the Messinian salinity crisis. Further differentiation happened during the Plio- and Pleistocene with signatures of population expansion after the Last Glacial Maximum in some of the main lineages.</p> <p><strong>Main Conclusions</strong>: Due to their unusual widespread distribution, the freshwater blennies represent an excellent model for studying phylogeographic structure across the Mediterranean basin biodiversity hotspot. The extant diversity and distribution of the freshwater Salaria species mirrors </p>
FIGURE 1 in Malacoctenus brunoi sp. n. (Blennioidei: Labrisomidae), a new scaled-blenny from Trindade Island, off Brazil
FIGURE 1. Malacoctenus brunoi sp. n., holotype (MNRJ 21978). Photo by J. L. Gasparini.
FIGURE 2 in Alloblennius frondiculus, a new species of blenny from the Andaman Islands (Teleostei: Blenniidae: Salariini)
FIGURE 2. Alloblennius frondiculus, holotype. Photograph by G. R. Allen.
FIGURE 5 in Three new species of triplefin blennies of the genus Enneanectes (Teleostei, Tripterygiidae) from the tropical eastern Pacific with a key to Pacific species of Enneanectes
FIGURE 5. Holotype of Enneanectes exsul sp. nov. (SIO 11-392, 25.4 mm SL).
FIGURE 4 in Three new species of triplefin blennies of the genus Enneanectes (Teleostei, Tripterygiidae) from the tropical eastern Pacific with a key to Pacific species of Enneanectes
FIGURE 4. Color photograph of Enneanectes macrops sp. nov. (photograph by D.R. Robertson).
FIGURE 3 in Three new species of triplefin blennies of the genus Enneanectes (Teleostei, Tripterygiidae) from the tropical eastern Pacific with a key to Pacific species of Enneanectes
FIGURE 3. Holotype of Enneanectes macrops sp. nov. (SIO 11-394, 36.6 mm SL).
FIGURE 6 in Three new species of triplefin blennies of the genus Enneanectes (Teleostei, Tripterygiidae) from the tropical eastern Pacific with a key to Pacific species of Enneanectes
FIGURE 6. Color photograph of Enneanectes exsul sp. nov. (photograph by D.R. Robertson).
FIGURE 1 in Three new species of triplefin blennies of the genus Enneanectes (Teleostei, Tripterygiidae) from the tropical eastern Pacific with a key to Pacific species of Enneanectes
FIGURE 1. Holotype of Enneanectes glendae sp. nov. (SIO 11-394, 26.8 mm SL).
FIGURE 1 in A new species of scaly blenny of the genus Labrisomus (Actinopterygii: Labrisomidae) from the tropical West Atlantic
FIGURE 1. Labrisomus conditus sp. n., holotype (ZUEC 6225), 119.0 mm SL (Photograph by C. Sazima).
Figure 1 from: Robertson R (2013) A new Haptoclinus blenny (Teleostei, Labrisomidae) from deep reefs off Curaçao, southern Caribbean, with comments on relationships of the genus. ZooKeys 306: 71-81. https://doi.org/10.3897/zookeys.306.5198
Figure 1 - Haptoclinus dropi, sp. n., holotype, USNM 414915, 21.5 mm SL, female. Both photographs were taken after the fish was in preservation for several months, the top image against a white background, the bottom against a black background. Photographs by Ian Silver-Gorges.
Figure 3 from: Robertson R (2013) A new Haptoclinus blenny (Teleostei, Labrisomidae) from deep reefs off Curaçao, southern Caribbean, with comments on relationships of the genus. ZooKeys 306: 71-81. https://doi.org/10.3897/zookeys.306.5198
Figure 3 - Haptoclinus apectolophus, holotype, ANSP 121251, 25.2 mm SL, male. Modified from Böhlke and Robins (1974).
Figure 2 from: Robertson R (2013) A new Haptoclinus blenny (Teleostei, Labrisomidae) from deep reefs off Curaçao, southern Caribbean, with comments on relationships of the genus. ZooKeys 306: 71-81. https://doi.org/10.3897/zookeys.306.5198
Figure 2 - Haptoclinus dropi, sp. n., holotype, USNM 414915, 21.5 mm SL, female. Both photographs were taken soon after the fish was captured, the top image against a white background, the bottom against a black background.
FIGURE 10. Salariopsis renatorum, FFR 4262 in Two new freshwater blennies from the Eastern Mediterranean basin (Teleostei: Blenniidae)
FIGURE 10. Salariopsis renatorum, FFR 4262, holotype, 61 mm SL; Türkiye: Aksu at Pazarcık.
FIGURE 7 in Two new freshwater blennies from the Eastern Mediterranean basin (Teleostei: Blenniidae)
FIGURE 7. Salariopsis burcuae; not preserved, nuptial male, about 50 mm SL; Israel: Lake Tiberias.
FIGURE 3. Salariopsis burcuae, FFR 4260 in Two new freshwater blennies from the Eastern Mediterranean basin (Teleostei: Blenniidae)
FIGURE 3. Salariopsis burcuae, FFR 4260, holotype, 88 mm SL; Türkiye: Körkün at Hacılı.
FIGURE 12 in Two new freshwater blennies from the Eastern Mediterranean basin (Teleostei: Blenniidae)
FIGURE 12. Lateral-line pores in Salariopsis renatorum (left) and Salariopsis burcuae (right).
FIGURE 8. Slariopsis renatorum, FFR 4262 in Two new freshwater blennies from the Eastern Mediterranean basin (Teleostei: Blenniidae)
FIGURE 8. Slariopsis renatorum, FFR 4262, holotype, 61 mm SL; Türkiye: Aksu at Pazarcık.
Diversity and biogeography of Mediterranean freshwater blennies (Blenniidae, Salaria)
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