Notes on age determination, size and age structure, longevity, and growth of co‐occurring macrourid fishes
| Autor: | Nicola J. Cousins, David M. Bailey, Rebecca H Hunter, Terje Jørgensen, Odd Aksel Bergstad |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Macrourus berglax
Age structure media_common.quotation_subject Longevity Fishes Zoology Interspecific competition Aquatic Science Biology biology.organism_classification Coryphaenoides rupestris Coryphaenoides Gadiformes Co occurring Animals Ecology Evolution Behavior and Systematics Macrourus media_common |
| Zdroj: | Journal of Fish Biology |
| ISSN: | 0022-1112 |
| Popis: | Nineteen species of the deep-water fish family Macrouridae inhabit the Mid-Atlantic Ridge (MAR) of the North Atlantic. Size and age structure, longevity and length at age were explored for seven of the more abundant species: Coryphaenoides armatus, Coryphaenoides brevibarbis, Coryphaenoides carapinus, Coryphaenoides guentheri, Coryphaenoides mediterraneus, Coryphaenoides rupestris and Macrourus berglax. The otoliths from these species had growth increments resembling those accepted as annuli in other deep-water species for which validation experiments have been conducted. Based on the counts of these growth increments, age estimates were derived as the basis for studies of age structure, growth and longevity. All the species appeared to have relatively low growth rates, but the interspecific variation in longevity illustrates that there is a considerable variation within the family and among species inhabiting the same deep-sea environment. Most of the species likely complete full life cycles on the MAR, but it is probable that both the youngest and the largest-oldest individuals of some of the species were not sampled adequately. |
| Databáze: | OpenAIRE |
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