How Mate Availability Influences Filial Cannibalism

2016 ◽  
Vol 91 (1) ◽  
pp. 47-67 ◽  
Author(s):  
Nicholas D. S. Deal ◽  
Bob B. M. Wong
Keyword(s):  
Filial Cannibalism ◽  
Mate Availability

Mate availability facilitates cannibalistic behaviour in a nest brooding fish: effects of timing during the brood cycle

Behaviour ◽  
2011 ◽  
Vol 148 (2) ◽  
pp. 247-264 ◽  
Author(s):  
Masanori Kohda ◽  
Nobuhiro Ohnishi ◽  
Noboru Okuda ◽  
Tomohiro Takeyama ◽  
Omar Myint
Keyword(s):  
Laboratory Experiments ◽  
Gravid Female ◽  
Theoretical Models ◽  
Filial Cannibalism ◽  
Mate Availability ◽  
Stimulus Female ◽  
Trade Offs ◽  
Future Reproduction ◽  
Cannibalistic Behaviour ◽  
The Subject

AbstractFilial cannibalism, eating one's own viable offspring, is accepted as an adaptive response to trade-offs between current and future reproduction. Theoretical models predict that high mate availability may induce more filial cannibalism, but this prediction is rarely tested. To examine this prediction, we performed laboratory experiments using the nest breeding goby Rhinogobius flumineus. Subject males were allowed to mate with a gravid female and care for the broods. A separate gravid female housed in a small cage (stimulus-female) was shown to the subject males at one of three different points during the brood cycle: prior to spawning, within 1 day after spawning and 1 week after spawning. Empty cages were shown as a control. Males that were shown the stimulus-female before spawning cannibalised more eggs than control males. In contrast, males that were shown the stimulus-females after spawning cannibalised as few eggs as control males did. Additionally, males that were shown the stimulus-female prior to spawning did not court females more intensively than other males. Thus, we suggest that the presence of an additional mate, rather than energy expenditure associated with courtship directed toward an additional mate, can facilitate males to cannibalise their eggs.

Mate availability affects female choice in a fish with paternal care: female counterstrategies against male filial cannibalism

2010 ◽  
Vol 29 (1) ◽  
pp. 153-159 ◽  
Author(s):  
Omar Myint ◽  
Hajime Tsujimoto ◽  
Nobuhiro Ohnishi ◽  
Tomohiro Takeyama ◽  
Masanori Kohda
Keyword(s):  
Female Choice ◽  
Paternal Care ◽  
Filial Cannibalism ◽  
Mate Availability

Mate availability influences filial cannibalism in fish with paternal care

2002 ◽  
Vol 63 (2) ◽  
pp. 227-233 ◽  
Author(s):  
Michio Kondoh ◽  
Noboru Okuda
Keyword(s):  
Paternal Care ◽  
Filial Cannibalism ◽  
Mate Availability

Filial cannibalism in a paternal mouthbrooding fish in relation to mate availability

1996 ◽  
Vol 52 (2) ◽  
pp. 307-314 ◽  
Author(s):  
NOBORU OKUDA ◽  
YASUNOBU YANAGISAWA
Keyword(s):  
Filial Cannibalism ◽  
Mate Availability

Mate availability and somatic condition affect filial cannibalism in a paternal brooding goby

Behaviour ◽  
2004 ◽  
Vol 141 (3) ◽  
pp. 279-296 ◽  
Author(s):  
Hajime Iwao ◽  
Noboru Okuda ◽  
Sayaka Ito
Keyword(s):  
Sex Ratio ◽  
Paternal Care ◽  
Energy Reserve ◽  
Filial Cannibalism ◽  
Food Ration ◽  
Mate Availability ◽  
Factors Affecting ◽  
Somatic Condition ◽  
Female Body Size ◽  
Freshwater Goby

AbstractWe conducted a laboratory experiment to test two major predictions from a game-theoretical model for the evolution of filial cannibalism in species with paternal care — that parental males are more cannibalistic when their energy reserve is low and that filial cannibalism increases when mate availability is high. We used a freshwater goby, Rhinogobius sp. OR, in which males care for eggs from multiple females in a nest. For each breeding male, we manipulated food ration, sex ratio and nest space: the former to control its energy reserve and the latter two to control its mate availability. The ANOVA showed that all three factors had a significant effect on filial cannibalism, which was facilitated when male somatic condition was poor, the sex ratio was female-biased and the nest space was small. Furthermore, filial cannibalism became more intense with increasing brood size and with decreasing female body size. In conclusion, the parental energy reserve and the quality and availability of mates are important factors affecting filial cannibalism in Rhinogobius sp. OR.

scholarly journals Hurry-up and hatch: selective filial cannibalism of slower developing eggs

2008 ◽  
Vol 4 (2) ◽  
pp. 160-162 ◽  
Author(s):  
Hope Klug ◽  
Kai Lindström
Keyword(s):  
Egg Size ◽  
Adaptive Strategy ◽  
Filial Cannibalism ◽  
Sand Goby ◽  
Pomatoschistus Minutus ◽  
Fitness Consequences

Filial cannibalism (the consumption of one's own offspring) is thought to represent an adaptive strategy in many animals. However, little is known about the details of which offspring are consumed when a parent cannibalizes. Here, we examined patterns of within-brood filial cannibalism in the sand goby ( Pomatoschistus minutus ). Males spawned sequentially with two females, and we asked whether males cannibalized selectively with regard to egg size or the order in which eggs were received. Males preferentially consumed the larger eggs of the second female they spawned with. Because larger eggs took longer to hatch, and because female 2's eggs were up to 1 day behind those of female 1, such preferential cannibalism might allow males to decrease the time spent caring for the current brood and re-enter the mating pool sooner. More work is needed to understand the fitness consequences of such selective cannibalism.

Filial cannibalism in the Cortez Damselfish stegastes rectifraenum

Evolution ◽  
1989 ◽  
Vol 43 (1) ◽  
pp. 158 ◽  
Author(s):  
Christopher W. Petersen ◽  
Karen Marchetti
Keyword(s):  
Filial Cannibalism
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