Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat
The egg surface structure of Thalassophryne amazonica, a freshwater toadfish from the Amazon basin is described. Eggs of this species show a remarkable, highly unusual system of parallel ridges and intermittent grooves that originate at the equator of the egg and lead to the micropylar pit, at which...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Ictiologia
|
| Series: | Neotropical Ichthyology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300013&lng=en&tlng=en |
| _version_ | 1819242378351869952 |
|---|---|
| author | Ralf Britz Mônica Toledo-Piza |
| author_facet | Ralf Britz Mônica Toledo-Piza |
| author_sort | Ralf Britz |
| collection | DOAJ |
| description | The egg surface structure of Thalassophryne amazonica, a freshwater toadfish from the Amazon basin is described. Eggs of this species show a remarkable, highly unusual system of parallel ridges and intermittent grooves that originate at the equator of the egg and lead to the micropylar pit, at which they end in a spiralling pattern. A similar egg surface structure has so far been described only from a group of Asian anabantoid percomorphs, obviously not closely related to Thalassophryne. This egg surface pattern may enhance fertilization success by guiding sperm to the micropyle. We review museum records for T. amazonica, present an updated map of its occurrence in the Amazon basin, and provide information on its habitat. |
| first_indexed | 2024-12-23T14:38:51Z |
| format | Article |
| id | doaj.art-f8a68cbd3b22428d8c93d0eb1a114927 |
| institution | Directory Open Access Journal |
| issn | 1982-0224 |
| language | English |
| last_indexed | 2024-12-23T14:38:51Z |
| publisher | Sociedade Brasileira de Ictiologia |
| record_format | Article |
| series | Neotropical Ichthyology |
| spelling | doaj.art-f8a68cbd3b22428d8c93d0eb1a1149272022-12-21T17:43:17ZengSociedade Brasileira de IctiologiaNeotropical Ichthyology1982-022410359359910.1590/S1679-62252012000300013S1679-62252012000300013Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitatRalf BritzMônica Toledo-Piza0Universidade de São PauloThe egg surface structure of Thalassophryne amazonica, a freshwater toadfish from the Amazon basin is described. Eggs of this species show a remarkable, highly unusual system of parallel ridges and intermittent grooves that originate at the equator of the egg and lead to the micropylar pit, at which they end in a spiralling pattern. A similar egg surface structure has so far been described only from a group of Asian anabantoid percomorphs, obviously not closely related to Thalassophryne. This egg surface pattern may enhance fertilization success by guiding sperm to the micropyle. We review museum records for T. amazonica, present an updated map of its occurrence in the Amazon basin, and provide information on its habitat.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300013&lng=en&tlng=enEgg attachmentFish reproductionMicropylar apparatusUpper AmazonZona radiata |
| spellingShingle | Ralf Britz Mônica Toledo-Piza Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat Neotropical Ichthyology Egg attachment Fish reproduction Micropylar apparatus Upper Amazon Zona radiata |
| title | Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat |
| title_full | Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat |
| title_fullStr | Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat |
| title_full_unstemmed | Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat |
| title_short | Egg surface structure of the freshwater toadfish Thalassophryne amazonica (Teleostei: Batrachoididae) with information on its distribution and natural habitat |
| title_sort | egg surface structure of the freshwater toadfish thalassophryne amazonica teleostei batrachoididae with information on its distribution and natural habitat |
| topic | Egg attachment Fish reproduction Micropylar apparatus Upper Amazon Zona radiata |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300013&lng=en&tlng=en |
| work_keys_str_mv | AT ralfbritz eggsurfacestructureofthefreshwatertoadfishthalassophryneamazonicateleosteibatrachoididaewithinformationonitsdistributionandnaturalhabitat AT monicatoledopiza eggsurfacestructureofthefreshwatertoadfishthalassophryneamazonicateleosteibatrachoididaewithinformationonitsdistributionandnaturalhabitat |