The biology, ecology and conservation of elasmobranchs: recent advances and new frontiers

Sims, David

doi:10.1111/jfb.12861

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…There are over 1300 extant species of cartilaginous fishes 50 that arose sometime during the group 400 million years evolution, with the main living families having first appeared sometime between the Permian and Jurassic Periods 51 . Currently, they occupy a very broad range of habitats worldwide, and play a key role in the functioning of ecosystems 52 .…”

Section: Discussionmentioning

confidence: 99%

Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa

Bottaro

2022

Sci Rep

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Animals that continually live in deep sea habitats face unique challenges and require adaptive specializations solutions in order to locate and identify food, predators, and conspecifics. The Ampullae of Lorenzini are specialized electroreceptors used by chondrichthyans for important biological functions. Ampullary organs of the ghost shark Chimaera monstrosa, a deep-sea species commonly captured as by-catch in the bottom trawl fishery, are here described for the first time using macroscopic, ultrastructural and histological approaches. The number of ampullary pores in C. monstrosa is about 700, distributed into the whole cephalic section of C. monstrosa, and organized in12 pore clusters and they are arranged into different configurations and form a distinct morphological pattern for this species, showing some anatomical peculiarities never described before in others cartilaginous fishes and may constitute an evolutionary adaptation of this ancient chondrichthyan species to the extreme environmental conditions of its deep sea niche.

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Section: Discussionmentioning

confidence: 99%

Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa

Bottaro

2022

Sci Rep

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“…Hence, Chondrichthyes, which are likely at the top of the food chain, are most at risk. In addition, the number of cartilaginous fish is declining worldwide (Sims 2015) as they are additionally threatened by factors such as overfishing, bycatch, target fisheries, and illegal trading. Moreover, given that some sharks and rays are also consumed by humans, it is risky to commercialize products that may be contaminated and lead to undesirable side effects (Mol et al 2018;Kim et al 2019;Lara et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Assessment of the conservation status of Chondrichthyans: underestimation of the pollution threat

Consales

Marsili

2021

The European Zoological Journal

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Cartilaginous fish include sharks, rays, skates, sawfish, and chimaeras. Their habitat ranges from shallow coastal waters to deep ocean floors, estuarine areas as well as rivers and inland waters. Overfishing is considered to be the main threat to their existence, but there are many more stressors that these species face. Pollution is an issue that concerns aquatic organisms at every level, and Chondrichthyans are no exception. Here, we looked at their IUCN Red List assessment, and noticed a lack of information regarding anthropogenic contamination for these species. Out of 1124 cartilaginous fish species assessed, only 17 Selachimorpha and 32 Batoidea species were considered to be facing a "pollution threat"; in most cases, the threat was assigned not from direct ecotoxicological studies of the specimens, but because the species inhabited areas likely to be contaminated. An update on the conservation status of these species is urgently needed. Further, there is a fundamental need to study the effects of contaminants on Chondrichthyans as they play a key role in aquatic ecosystems.

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“…Such implications are of concern considering that all species analysed in this study have a high conservation protection status and generally the number of elasmobranch around the world is declining (Sims, 2015;Spaet et al, 2016).…”

mentioning

confidence: 99%

Bioaccumulation of organochlorine compounds in large, threatened elasmobranchs off northern New South Wales, Australia

Cagnazzi

Consales

Broadhurst

et al. 2019

Marine Pollution Bulletin

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The biology, ecology and conservation of elasmobranchs: recent advances and new frontiers

Cited by 5 publications

References 30 publications

Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa

Sixth sense in the deep-sea: the electrosensory system in ghost shark Chimaera monstrosa

Assessment of the conservation status of Chondrichthyans: underestimation of the pollution threat

Bioaccumulation of organochlorine compounds in large, threatened elasmobranchs off northern New South Wales, Australia

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