scholarly journals Water mold infection but not paternity induces selective filial cannibalism in a goby

2016 ◽  
Vol 6 (20) ◽  
pp. 7221-7229 ◽  
Author(s):  
Martin Vallon ◽  
Nils Anthes ◽  
Katja U. Heubel
Keyword(s):  
Filial Cannibalism ◽  
Water Mold

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.

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

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

scholarly journals Filial cannibalism by largemouth bass (Micropterus salmoides): a three-decade natural history record from a small northern temperate lake

2018 ◽  
Vol 33 (1) ◽  
pp. 361-379
Author(s):  
Colin J. Dassow ◽  
Alex Collier ◽  
Jay Y. S. Hodgson ◽  
Cal D. Buelo ◽  
James R. Hodgson
Keyword(s):  
Natural History ◽  
Largemouth Bass ◽  
Micropterus Salmoides ◽  
Filial Cannibalism ◽  
Temperate Lake ◽  
History Record

Reduced cannibalism during male pregnancy

Behaviour ◽  
2016 ◽  
Vol 153 (1) ◽  
pp. 91-106 ◽  
Author(s):  
M. Cunha ◽  
A. Berglund ◽  
T. Alves ◽  
N.M. Monteiro
Keyword(s):  
Post Partum ◽  
Feeding Activity ◽  
Filial Cannibalism ◽  
Fitness Costs ◽  
Life History Stages ◽  
In The Wild ◽  
Males And Females ◽  
Male Pregnancy ◽  
Time And Energy ◽  
Benefits And Costs

Cannibalism provides energetic benefits but is also potentially costly, especially when directed towards kin. Since fitness costs increase with time and energy invested in offspring, cannibalism should be infrequent when parental investment is high. Thus, filial cannibalism in male syngnathids, a group known for the occurrence of male pregnancy, should be rare. Using the pipefish (Syngnathus abaster) we aimed to investigate whether cannibalism does occur in both sexes and how it is affected by reproductive and nutritional states. Although rare, we witnessed cannibalism both in the wild and in the laboratory. Unlike non-pregnant males and females, pregnant and post-partum males largely refrained from cannibalising juveniles. Reproducing males decreased their feeding activity, thus rendering cannibalism, towards kin or non-kin, less likely to occur. However, if not continuously fed, all pipefish adopted a cannibal strategy, revealing that sex and life history stages influenced the ratio between the benefits and costs of cannibalism.

scholarly journals Galtierella biscalithecae nov. gen. et sp., a Late Pennsylvanian endophytic water mold (Peronosporomycetes) from France

2010 ◽  
Vol 9 (1-2) ◽  
pp. 5-11 ◽  
Author(s):  
Michael Krings ◽  
Thomas N. Taylor ◽  
Nora Dotzler ◽  
Anne-Laure Decombeix
Keyword(s):  
Water Mold
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