Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil
The epipelagic flyingfish, Hirundichthys affinis is a major artisanal fishery resource from the Northeastern coastal waters of Brazil. However, biological information about this species has been poorly documented. This paper presents data on the length-weight relationship, sex ratio, length at first...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842015000100026&lng=en&tlng=en |
| _version_ | 1811268758231056384 |
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| author | MR. Oliveira MM. Carvalho NB. Silva ME. Yamamoto S. Chellappa |
| author_facet | MR. Oliveira MM. Carvalho NB. Silva ME. Yamamoto S. Chellappa |
| author_sort | MR. Oliveira |
| collection | DOAJ |
| description | The epipelagic flyingfish, Hirundichthys affinis is a major artisanal fishery resource from the Northeastern coastal waters of Brazil. However, biological information about this species has been poorly documented. This paper presents data on the length-weight relationship, sex ratio, length at first sexual maturity, gonadal development and fecundity of H. affinis sampled from the coastal waters of Rio Grande do Norte, Brazil. The total body length and weight for both sexes ranged from 23.4 to 29.4 cm and from 89 to 188g, respectively. The allometric coefficient of males was 2.208 and that of females was 2.985, indicating negatively allometric growth. The sex ratio was 1M:1.6F thus differing from the expected ratio of 1:1 (χ2 = 18.63). The total length at first sexual maturity was estimated at 27.3 cm for males and 27.1 cm for females. The macroscopic characteristics of the gonads indicated four maturation stages. Histological studies of gonads of H. affinis showed seven phases of oocyte development and four phases of spermatocyte development. The mean absolute fecundity was 9092 vitelogenic oocytes. Spawning occurred during the months of March to July. The microscopic descriptions of the stages of gonad maturation indicate that the study area is an important spawning ground of H. affinis. |
| first_indexed | 2024-04-12T21:28:39Z |
| format | Article |
| id | doaj.art-0e9c9f43bd3846fb9a319506b84886c4 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-04-12T21:28:39Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-0e9c9f43bd3846fb9a319506b84886c42022-12-22T03:16:06ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437575119820710.1590/1519-6984.11513S1519-69842015000100026Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of BrazilMR. OliveiraMM. CarvalhoNB. SilvaME. YamamotoS. ChellappaThe epipelagic flyingfish, Hirundichthys affinis is a major artisanal fishery resource from the Northeastern coastal waters of Brazil. However, biological information about this species has been poorly documented. This paper presents data on the length-weight relationship, sex ratio, length at first sexual maturity, gonadal development and fecundity of H. affinis sampled from the coastal waters of Rio Grande do Norte, Brazil. The total body length and weight for both sexes ranged from 23.4 to 29.4 cm and from 89 to 188g, respectively. The allometric coefficient of males was 2.208 and that of females was 2.985, indicating negatively allometric growth. The sex ratio was 1M:1.6F thus differing from the expected ratio of 1:1 (χ2 = 18.63). The total length at first sexual maturity was estimated at 27.3 cm for males and 27.1 cm for females. The macroscopic characteristics of the gonads indicated four maturation stages. Histological studies of gonads of H. affinis showed seven phases of oocyte development and four phases of spermatocyte development. The mean absolute fecundity was 9092 vitelogenic oocytes. Spawning occurred during the months of March to July. The microscopic descriptions of the stages of gonad maturation indicate that the study area is an important spawning ground of H. affinis.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842015000100026&lng=en&tlng=ensex ratiohistology of gonadsfecundityreproductive period |
| spellingShingle | MR. Oliveira MM. Carvalho NB. Silva ME. Yamamoto S. Chellappa Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil Brazilian Journal of Biology sex ratio histology of gonads fecundity reproductive period |
| title | Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil |
| title_full | Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil |
| title_fullStr | Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil |
| title_full_unstemmed | Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil |
| title_short | Reproductive aspects of the flyingfish, Hirundichthys affinis from the Northeastern coastal waters of Brazil |
| title_sort | reproductive aspects of the flyingfish hirundichthys affinis from the northeastern coastal waters of brazil |
| topic | sex ratio histology of gonads fecundity reproductive period |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842015000100026&lng=en&tlng=en |
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