Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802)
Autor(a) principal: | |
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Data de Publicação: | 2024 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100148 |
Resumo: | Abstract This study aimed to evaluate whether skeletal development of the Pantanal Caiman (Caiman yacare) is similarly influenced by temperature variation and controlled increases in embryo motility. All eggs were incubated at 90% humidity and 29 °C for the first 45 days. Thereafter, the incubation temperature was either maintained at 29 °C and embryos were treated with 4-aminopyridine (4-AP) on days 46, 47, 48, and 49 (Group I, 29 °C 4-AP, n = 15); maintained at 29 °C (n = 14; Group II); or at 33 °C (n = 14, Group III). Embryonic movement was measured using an Egg Buddy® digital monitor on days 30, 35, 42, 49, 56, and 60, at which point embryos were euthanized and samples were collected for analysis. No differences were observed between groups with varying incubation temperatures. In contrast, embryonic motility was greater in embryos treated with 4-AP (P < 0.001) on day 49, and this was associated with higher proportions of snout-vent and hand lengths. This study demonstrates for the first time that pharmacologically induced increases in embryo motility result in phenotypic changes to the proportion of elements during prenatal ontogeny, thereby effectively altering the adaptation of the species to specific environments. |
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Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802)embryonic movementtemperaturePantanal CaimanAbstract This study aimed to evaluate whether skeletal development of the Pantanal Caiman (Caiman yacare) is similarly influenced by temperature variation and controlled increases in embryo motility. All eggs were incubated at 90% humidity and 29 °C for the first 45 days. Thereafter, the incubation temperature was either maintained at 29 °C and embryos were treated with 4-aminopyridine (4-AP) on days 46, 47, 48, and 49 (Group I, 29 °C 4-AP, n = 15); maintained at 29 °C (n = 14; Group II); or at 33 °C (n = 14, Group III). Embryonic movement was measured using an Egg Buddy® digital monitor on days 30, 35, 42, 49, 56, and 60, at which point embryos were euthanized and samples were collected for analysis. No differences were observed between groups with varying incubation temperatures. In contrast, embryonic motility was greater in embryos treated with 4-AP (P < 0.001) on day 49, and this was associated with higher proportions of snout-vent and hand lengths. This study demonstrates for the first time that pharmacologically induced increases in embryo motility result in phenotypic changes to the proportion of elements during prenatal ontogeny, thereby effectively altering the adaptation of the species to specific environments.Instituto Internacional de Ecologia2024-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100148Brazilian Journal of Biology v.84 2024reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/1519-6984.252845info:eu-repo/semantics/openAccessGomes,L. G.Stocco,M. B.Sousa,N. P. deMartini,A. C.Morgado,T. O.Spiller,P. R.Moreira,L. F. B.de Souza,R. L.eng2021-12-16T00:00:00Zoai:scielo:S1519-69842024000100148Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2021-12-16T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
title |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
spellingShingle |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) Gomes,L. G. embryonic movement temperature Pantanal Caiman |
title_short |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
title_full |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
title_fullStr |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
title_full_unstemmed |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
title_sort |
Influence of incubation temperature and embryonic motility on the growth of members of Caiman yacare (Daudin, 1802) |
author |
Gomes,L. G. |
author_facet |
Gomes,L. G. Stocco,M. B. Sousa,N. P. de Martini,A. C. Morgado,T. O. Spiller,P. R. Moreira,L. F. B. de Souza,R. L. |
author_role |
author |
author2 |
Stocco,M. B. Sousa,N. P. de Martini,A. C. Morgado,T. O. Spiller,P. R. Moreira,L. F. B. de Souza,R. L. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Gomes,L. G. Stocco,M. B. Sousa,N. P. de Martini,A. C. Morgado,T. O. Spiller,P. R. Moreira,L. F. B. de Souza,R. L. |
dc.subject.por.fl_str_mv |
embryonic movement temperature Pantanal Caiman |
topic |
embryonic movement temperature Pantanal Caiman |
description |
Abstract This study aimed to evaluate whether skeletal development of the Pantanal Caiman (Caiman yacare) is similarly influenced by temperature variation and controlled increases in embryo motility. All eggs were incubated at 90% humidity and 29 °C for the first 45 days. Thereafter, the incubation temperature was either maintained at 29 °C and embryos were treated with 4-aminopyridine (4-AP) on days 46, 47, 48, and 49 (Group I, 29 °C 4-AP, n = 15); maintained at 29 °C (n = 14; Group II); or at 33 °C (n = 14, Group III). Embryonic movement was measured using an Egg Buddy® digital monitor on days 30, 35, 42, 49, 56, and 60, at which point embryos were euthanized and samples were collected for analysis. No differences were observed between groups with varying incubation temperatures. In contrast, embryonic motility was greater in embryos treated with 4-AP (P < 0.001) on day 49, and this was associated with higher proportions of snout-vent and hand lengths. This study demonstrates for the first time that pharmacologically induced increases in embryo motility result in phenotypic changes to the proportion of elements during prenatal ontogeny, thereby effectively altering the adaptation of the species to specific environments. |
publishDate |
2024 |
dc.date.none.fl_str_mv |
2024-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100148 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100148 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1519-6984.252845 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.84 2024 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129890751086592 |