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Brood-directed parental aggression and early brood loss in the coral reef fish, Acanthochromis polyacanthus (Pomacentridae)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Thresher, Ronald E. |
| Copyright Year | 1985 |
| Abstract | Abstract Brood-directed parental aggression, in which parents attack and even kill their own young, is described for the coral reef fish Acanthochromis polyacanthus . This behaviour involves both parents, occurs on days 7–16 post-hatching, and is characteristic of all broods produced early in the spawning season. Such parental aggression appears to underlie widespread early brood loss in the species, i.e. disappearance of young before they reach an age at which they are viable in the absence of parental defence. Simultaneously, there is also a high frequency of sudden increases in the sizes of some tended broods. The data suggest that some brood-tending parents are forcibly expelling their broods from parental territories, and fostering them on to adults still tending broods. By expelling their young and re-spawning, pairs may realize a 7% increase in annual fecundity over pairs that do not expel their young, despite a low survival rate of expelled young. |
| Starting Page | 897 |
| Ending Page | 907 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/S0003-3472(85)80024-5 |
| Volume Number | 33 |
| Alternate Webpage(s) | https://api.elsevier.com/content/article/pii/S0003347285800245 |
| Alternate Webpage(s) | https://www.sciencedirect.com/science/article/pii/S0003347285800245?dgcid=api_sd_search-api-endpoint |
| Alternate Webpage(s) | https://doi.org/10.1016/S0003-3472%2885%2980024-5 |
| Journal | Animal Behaviour |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
