Evolutionary consequences of age-specific harvesting: age at first reproduction
Abstract The aim of this paper is to investigate harvest-induced evolution in life-history strategies of a harvested single-species population. In particular, we analyze evolution of the trait age at first reproduction. The population is grouped into four age classes, namely, zero-year-olds (newborn...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-06-01
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| Series: | Advances in Difference Equations |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13662-017-1214-2 |
| _version_ | 1819102540706349056 |
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| author | Kornkanok Bunwong Wichuta Sae-jie |
| author_facet | Kornkanok Bunwong Wichuta Sae-jie |
| author_sort | Kornkanok Bunwong |
| collection | DOAJ |
| description | Abstract The aim of this paper is to investigate harvest-induced evolution in life-history strategies of a harvested single-species population. In particular, we analyze evolution of the trait age at first reproduction. The population is grouped into four age classes, namely, zero-year-olds (newborns), one-year-olds (juveniles), two-year-olds (small adults), and individuals aged three years or older (large adults). The population is assumed to consist of a ‘resident’ group and a ‘variant’ group that are identical except that the resident group usually first reproduces as a large adult and the variant group usually first reproduces as a small adult. The effect of various age-dependent harvesting strategies on the dynamics is studied both analytically and numerically. It is shown that age-dependent harvesting strategies can cause evolution from the resident group to the variant group. In addition, we show that a limit on the harvesting of the resident group can yield a sustainable fishery of the commercially preferred resident group. |
| first_indexed | 2024-12-22T01:36:11Z |
| format | Article |
| id | doaj.art-998fa309354248d28e7849cd9bc3a949 |
| institution | Directory Open Access Journal |
| issn | 1687-1847 |
| language | English |
| last_indexed | 2024-12-22T01:36:11Z |
| publishDate | 2017-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Advances in Difference Equations |
| spelling | doaj.art-998fa309354248d28e7849cd9bc3a9492022-12-21T18:43:22ZengSpringerOpenAdvances in Difference Equations1687-18472017-06-012017111210.1186/s13662-017-1214-2Evolutionary consequences of age-specific harvesting: age at first reproductionKornkanok Bunwong0Wichuta Sae-jie1Department of Mathematics, Faculty of Science, Mahidol UniversityCentre of Excellence in Mathematics, CHEAbstract The aim of this paper is to investigate harvest-induced evolution in life-history strategies of a harvested single-species population. In particular, we analyze evolution of the trait age at first reproduction. The population is grouped into four age classes, namely, zero-year-olds (newborns), one-year-olds (juveniles), two-year-olds (small adults), and individuals aged three years or older (large adults). The population is assumed to consist of a ‘resident’ group and a ‘variant’ group that are identical except that the resident group usually first reproduces as a large adult and the variant group usually first reproduces as a small adult. The effect of various age-dependent harvesting strategies on the dynamics is studied both analytically and numerically. It is shown that age-dependent harvesting strategies can cause evolution from the resident group to the variant group. In addition, we show that a limit on the harvesting of the resident group can yield a sustainable fishery of the commercially preferred resident group.http://link.springer.com/article/10.1186/s13662-017-1214-2age at first reproductionage-selective harvestingage-structured modelharvestinginvasion fitnesslife-history evolution |
| spellingShingle | Kornkanok Bunwong Wichuta Sae-jie Evolutionary consequences of age-specific harvesting: age at first reproduction Advances in Difference Equations age at first reproduction age-selective harvesting age-structured model harvesting invasion fitness life-history evolution |
| title | Evolutionary consequences of age-specific harvesting: age at first reproduction |
| title_full | Evolutionary consequences of age-specific harvesting: age at first reproduction |
| title_fullStr | Evolutionary consequences of age-specific harvesting: age at first reproduction |
| title_full_unstemmed | Evolutionary consequences of age-specific harvesting: age at first reproduction |
| title_short | Evolutionary consequences of age-specific harvesting: age at first reproduction |
| title_sort | evolutionary consequences of age specific harvesting age at first reproduction |
| topic | age at first reproduction age-selective harvesting age-structured model harvesting invasion fitness life-history evolution |
| url | http://link.springer.com/article/10.1186/s13662-017-1214-2 |
| work_keys_str_mv | AT kornkanokbunwong evolutionaryconsequencesofagespecificharvestingageatfirstreproduction AT wichutasaejie evolutionaryconsequencesofagespecificharvestingageatfirstreproduction |