Redescription of the bump-head sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with designation of a neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae)

Sawai, Etsuro; Yamanoue, Yusuke; Nyegaard, Marianne; Sakai, Yoichi

doi:10.1007/s10228-017-0603-6

Cited by 33 publications

(86 citation statements)

References 45 publications

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“…The report here of M. tecta in Peruvian waters adds a new occurrence location for the species in the south‐east Pacific. Photographic evidence also suggests its presence in Chilean waters (Nyegaard et al ., 2018a), but no other records of M. tecta have been reported north of 11° S (this study) in the south‐east Pacific Ocean, not even in the Galapagos Islands where a recent genetic study revealed the prevalence of M. ramsayi (Thys et al ., ), which, based on key morphological characters observed, corresponds to the recently redescribed M. alexandrini (Sawai et al ., ). The limited distribution of M. tecta , mainly in southern Peru waters reported here, supports the idea that they are probably distributed in temperate waters (Nyegaard et al ., 2018a,b).…”

Section: Discussionmentioning

confidence: 97%

“…The physical similarities between all three Mola species have led to the misidentification of M. tecta and M. alexandrini as M. mola (Nyegaard et al ., ; Sawai et al ., ; Thys et al ., ). Mola mola has been reported in Peruvian waters (Chirichigno & Cornejo, ) and a specimen of the species is exhibited in the Museum of Natural History of Lima and it was assumed that this was the only species of Mola present in the area.…”

Section: Discussionmentioning

confidence: 99%

“…However, although M. alexandrini has not been reported in Peruvian waters before, it is likely this species is also using these waters as it has been reported off Chile (Brito, ) and the Galapagos Islands (Thys et al ., ). Both M. mola and M. alexandrini share physical similarities (Sawai et al ., ) and it is possible that some of the unidentified individuals with a rounded clavus could have been M. alexandrini .…”

Section: Discussionmentioning

confidence: 99%

“…A, B and C) (Yoshita et al ., ; Yamanoue et al ., ), which have now been recognized as Mola alexandrini (Ranzani 1839), Mola mola (L. 1758) and Mola tecta Nyegaard et al . (2017) (Nyegaard et al ., 2018a; Sawai et al ., ).…”

Section: Introductionmentioning

confidence: 97%

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The effect of Peruvian small‐scale fisheries on sunfishes (Molidae)

Mangel

Pajuelo²,

Pásara-Polack³

et al. 2018

Journal of Fish Biology

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Reports were compiled of sunfish (family Molidae) by-catch in Peruvian small-scale fisheries and sunfish by-catch rates were estimated using data from shore-based and onboard monitoring programmes. A total of 114 sunfishes were reported in the longline and gillnet fisheries along the Peru coast from 2005 to 2017. Systematic monitoring effort of small-scale gillnets leads to an estimate of between 23 and 352 individuals captured annually by the fleet fishing from the northern port of Salaverry and central ports of Ancon and Chorrillos and suggests that the actual number captured by the Peruvian gillnet fleet is in the thousands of individuals. Thus, Peruvian small-scale fisheries have the potential to greatly affect populations of these still poorly studied species. Moreover, new occurrence locations are reported for the newly described Mola tecta, which was only observed south of 11 S. Because of physical similarities among Mola species it was difficult to identify sunfishes to the species level and thus further studies (e.g., genetics) will be required to provide more detailed information on individual species vulnerability to by-catch in Peruvian waters. K E Y W O R D S by-catch, Masturus lanceolatus, Mola, Mola tecta, Molidae fishes, south-east Pacific Ocean *Both authors contributed equally to this work.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

The effect of Peruvian small‐scale fisheries on sunfishes (Molidae)

Mangel

Pajuelo²,

Pásara-Polack³

et al. 2018

Journal of Fish Biology

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“…Despite their strange appearance and unique shape, which stimulated scientific interest since the 16th century (Rondelet 1554), little attention has been paid to ocean sunfishes and their abundance among fisheries. Recently, a growing interest in their taxonomy led to the reinstatement of a senior synonym of Mola ramsayi (Giglioli, 1883) (see Sawai et al 2017) and the description of a new species of Mola (see Nyegaard et al 2017). In parallel, reports of the extent of ocean sunfish bycatch have been given by Nyegaard et al (2017).…”

Section: Introductionmentioning

confidence: 99%

First record of a stranded specimen of the sharptail mola, Masturus lanceolatus (Actinopterygii: Tetraodontiformes: Molidae), from the central coast of Peru

Moreno-Méndez¹,

Campos-León²,

Béarez³

2020

Acta Ichthyol. Piscat.

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The Molidae are a widely distributed family, but they are rarely encountered and their distribution and abundance have poorly been documented. A stranded specimen of the sharptail mola, Masturus lanceolatus (Liénard, 1840), has recently been recorded on a Pacific beach in Peru. We examined, measured and photographed the specimen. It is very likely that the presently reported sharptail mola was originally captured by a Peruvian purse seiner or longliner and later discarded as a useless bycatch.

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Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola

Flaum,

Blumer,

Dean

et al. 2024

The Anatomical Record

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Many fish use a set of pharyngeal jaws in their throat to aid in prey capture and processing, particularly of large or complex prey. In this study—combining dissection, CT scanning, histology, and performance testing—we demonstrate a novel use of pharyngeal teeth in the ocean sunfish (Mola mola), a species for which pharyngeal jaw anatomy had not been described. We show that sunfish possesses only dorsal pharyngeal jaws where, in contrast to their beaklike oral teeth, teeth are recurved spikes, arranged in three loosely connected rows. Fang‐like pharyngeal teeth were tightly socketed in the skeletal tissue, with shorter, incompletely‐formed teeth erupting between, suggesting tooth replacement. Trichrome staining revealed teeth anchored into their sockets via a combination of collagen bundles originating from the jaw connective tissue and mineralized trabeculae extending from the teeth bases. In resting position, teeth are nearly covered by soft tissue; however, manipulation of a straplike muscle, running transversely on the dorsal jaw face, everted teeth like a cat's claws. Adult sunfish suction feed almost exclusively on gelatinous prey (e.g., jellyfish) and have been observed to jet water during feeding and other activities; flume experiments simulating jetting behavior demonstrated adult teeth caught simulated gelatinous prey with 70%–100% success, with the teeth immobile in their sockets, even at 50x the jetting force, demonstrating high safety factor. We propose that sunfish pharyngeal teeth function as an efficient retention cage for mechanically challenging prey, a curious evolutionary convergence with the throat spikes of divergent taxa that employ spitting and jetting.

show abstract

Redescription of the bump-head sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with designation of a neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae)

Cited by 33 publications

References 45 publications

The effect of Peruvian small‐scale fisheries on sunfishes (Molidae)

The effect of Peruvian small‐scale fisheries on sunfishes (Molidae)

First record of a stranded specimen of the sharptail mola, Masturus lanceolatus (Actinopterygii: Tetraodontiformes: Molidae), from the central coast of Peru

Functional morphology of the pharyngeal teeth of the ocean sunfish, Mola mola

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