Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish
The free neuromasts were morphologically investigated in the larvae of two cyprinid fish, Zacco platypus and Gnathopogon elongatus caerulescens. In Z. platypus that mainly inhabits rivers, cupulae increased in length and became flat in shape (the so-called nail type) along with growth in the larval...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Japanese Society of Fisheries Science
1991
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| Online Access: | http://irep.iium.edu.my/11304/ http://irep.iium.edu.my/11304/1/mukai_1991_suisan.pdf |
| _version_ | 1848777313120944128 |
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| author | Mukai, Yukinori Kobayashi, Hiroshi |
| author_facet | Mukai, Yukinori Kobayashi, Hiroshi |
| author_sort | Mukai, Yukinori |
| building | IIUM Repository |
| collection | Online Access |
| description | The free neuromasts were morphologically investigated in the larvae of two cyprinid fish, Zacco platypus and Gnathopogon elongatus caerulescens. In Z. platypus that mainly inhabits rivers, cupulae increased in length and became flat in shape (the so-called nail type) along with growth in the larval stage. Afterwards, the cupulae became shorter during the juvenile stage. The short and nail type cupulae of Z. platypus seem to be adaptive to rheotactic swimming. On the other hand, in G. elongatus caerulescens that lives in lakes, the cupulae were long and did not change in length until the 72nd day after hatching in the juvenile stage, but it changed in shape from a stick to a flat type like marine algae (laminaria). The surface area of these cupulae is larger than that of Z. platypus, and therefore the cupulae of G. elongatus caerulescens will be more receptive to mechanical stimulus by water flow. The photographs (SEM) of neuromast showed that the direction of the best physiological sensitivity of sensory hair cells coincided with the minor axis of the outline of the neuromast area, namely the bending direction of cupulae. From these results, it was considered that the neuro-masts of G. elongates caerulescens have a high sensitivity not only regarding their swimming behavior but also for perceiving weak water movements caused by prey and predators. |
| first_indexed | 2025-11-14T14:44:00Z |
| format | Article |
| id | iium-11304 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T14:44:00Z |
| publishDate | 1991 |
| publisher | Japanese Society of Fisheries Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-113042012-05-14T01:51:11Z http://irep.iium.edu.my/11304/ Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish Mukai, Yukinori Kobayashi, Hiroshi SH Aquaculture. Fisheries. Angling The free neuromasts were morphologically investigated in the larvae of two cyprinid fish, Zacco platypus and Gnathopogon elongatus caerulescens. In Z. platypus that mainly inhabits rivers, cupulae increased in length and became flat in shape (the so-called nail type) along with growth in the larval stage. Afterwards, the cupulae became shorter during the juvenile stage. The short and nail type cupulae of Z. platypus seem to be adaptive to rheotactic swimming. On the other hand, in G. elongatus caerulescens that lives in lakes, the cupulae were long and did not change in length until the 72nd day after hatching in the juvenile stage, but it changed in shape from a stick to a flat type like marine algae (laminaria). The surface area of these cupulae is larger than that of Z. platypus, and therefore the cupulae of G. elongatus caerulescens will be more receptive to mechanical stimulus by water flow. The photographs (SEM) of neuromast showed that the direction of the best physiological sensitivity of sensory hair cells coincided with the minor axis of the outline of the neuromast area, namely the bending direction of cupulae. From these results, it was considered that the neuro-masts of G. elongates caerulescens have a high sensitivity not only regarding their swimming behavior but also for perceiving weak water movements caused by prey and predators. Japanese Society of Fisheries Science 1991 Article PeerReviewed application/pdf en http://irep.iium.edu.my/11304/1/mukai_1991_suisan.pdf Mukai, Yukinori and Kobayashi, Hiroshi (1991) Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish. Nippon Suisan Gakkaishi, 57 (7). pp. 1339-1346. ISSN 0021-5392 https://www.jstage.jst.go.jp/article/suisan1932/57/7/57_7_1339/_pdf 10.2331/suisan.57.1339 |
| spellingShingle | SH Aquaculture. Fisheries. Angling Mukai, Yukinori Kobayashi, Hiroshi Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title | Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title_full | Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title_fullStr | Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title_full_unstemmed | Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title_short | Morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| title_sort | morphological studies on the cupulae of free neuromasts along with the growth of larvae in cyprinid fish |
| topic | SH Aquaculture. Fisheries. Angling |
| url | http://irep.iium.edu.my/11304/ http://irep.iium.edu.my/11304/ http://irep.iium.edu.my/11304/ http://irep.iium.edu.my/11304/1/mukai_1991_suisan.pdf |