Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes)
ABSTRACT We analyzed growth and reproduction of captive-born smallnose fanskates Sympterygia bonapartii. Egg cases were obtained from oviposition of two females caught in the wild and held at Temaikèn Aquarium. Following hatching, growth was analyzed in 13 females and 21 males until sexual maturity....
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ictiologia
2018-12-01
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| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400211&lng=en&tlng=en |
| _version_ | 1831809278462132224 |
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| author | Julieta A. Jañez Fernando J. Meijide Luis O. Lucifora Carolina Abraham Federico Argemi |
| author_facet | Julieta A. Jañez Fernando J. Meijide Luis O. Lucifora Carolina Abraham Federico Argemi |
| author_sort | Julieta A. Jañez |
| collection | DOAJ |
| description | ABSTRACT We analyzed growth and reproduction of captive-born smallnose fanskates Sympterygia bonapartii. Egg cases were obtained from oviposition of two females caught in the wild and held at Temaikèn Aquarium. Following hatching, growth was analyzed in 13 females and 21 males until sexual maturity. Pattern of oviposition activity and reproductive performance were evaluated in six of the captive-reared females. Four models were fitted to growth data, among which the logistic function was the one attaining the best fit. The highest growth rate for both sexes was recorded during the first year of life, whereas growth was significantly higher in females than in males during the second year. Size at first oviposition was 61.7 ± 3.5 cm TL, similar to wild specimens. However, captive-reared females reached maturity before two years of age, i.e. much earlier than wild skates, implying a significant phenotypic plasticity in this species. The similarity in size at maturity and the difference in age at maturity between captive and wild specimens indicate that there is a decoupling of both parameters mediated through growth rates. Captive-born skates reproduced successfully and yielded viable offspring, indicating that the environment at Temaikèn Aquarium is suitable for S. bonapartii to attain its full life cycle. |
| first_indexed | 2024-12-22T20:37:58Z |
| format | Article |
| id | doaj.art-39917f5ecf3a45a1aab7277b57c8c406 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-22T20:37:58Z |
| publishDate | 2018-12-01 |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-39917f5ecf3a45a1aab7277b57c8c4062022-12-21T18:13:24ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-02242018-12-0116410.1590/1982-0224-20180013S1679-62252018000400211Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes)Julieta A. JañezFernando J. MeijideLuis O. LuciforaCarolina AbrahamFederico ArgemiABSTRACT We analyzed growth and reproduction of captive-born smallnose fanskates Sympterygia bonapartii. Egg cases were obtained from oviposition of two females caught in the wild and held at Temaikèn Aquarium. Following hatching, growth was analyzed in 13 females and 21 males until sexual maturity. Pattern of oviposition activity and reproductive performance were evaluated in six of the captive-reared females. Four models were fitted to growth data, among which the logistic function was the one attaining the best fit. The highest growth rate for both sexes was recorded during the first year of life, whereas growth was significantly higher in females than in males during the second year. Size at first oviposition was 61.7 ± 3.5 cm TL, similar to wild specimens. However, captive-reared females reached maturity before two years of age, i.e. much earlier than wild skates, implying a significant phenotypic plasticity in this species. The similarity in size at maturity and the difference in age at maturity between captive and wild specimens indicate that there is a decoupling of both parameters mediated through growth rates. Captive-born skates reproduced successfully and yielded viable offspring, indicating that the environment at Temaikèn Aquarium is suitable for S. bonapartii to attain its full life cycle.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400211&lng=en&tlng=enArhynchobatidaeCaptive breedingGrowth to maturityReproductive performanceSkates |
| spellingShingle | Julieta A. Jañez Fernando J. Meijide Luis O. Lucifora Carolina Abraham Federico Argemi Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) Neotropical Ichthyology Arhynchobatidae Captive breeding Growth to maturity Reproductive performance Skates |
| title | Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) |
| title_full | Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) |
| title_fullStr | Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) |
| title_full_unstemmed | Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) |
| title_short | Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) |
| title_sort | growth and reproduction in captivity unveils remarkable life history plasticity in the smallnose fanskate sympterygia bonapartii chondrichthyes rajiformes |
| topic | Arhynchobatidae Captive breeding Growth to maturity Reproductive performance Skates |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000400211&lng=en&tlng=en |
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