Context-dependent kin discrimination in larvae of the marbled salamander, Ambystoma opacum

Article Abstract:

Socioecological factors such as food level, relative body size, and the presence of partition influence kin discrimination and correlates of fitness in larvae of the marbled salamander (Ambystoma opacum). Aggressive behavior is due to an interactive effect of kinship, food quantity, and relative size. Low food level reduces body size and delays metamorphosis, while the absence of a partition between individuals in a pair inhibits the growth of the smaller member and shortens the larval period.

Fishes, Aggressive behavior in animals, Animal aggression, Kin recognition in animals, Animal kin recognition, Fish larvae

---

Larval marbled salamanders, Ambystoma opacum, eat their kin

Article Abstract:

The study reveals that small larvae of marbled salamander, Ambystoma opacum, are more susceptible to cannibalism by their bigger siblings than by non-siblings. The sibling cannibalism in experiment conditions does not seem to stem from size-selective foraging by the cannibal or variations among the sibships in the propensity for larvae to cannibalize siblings, the latter of which has been discovered in larval A. tigrinum. The results suggest preferential cannibalism of siblings.

Cannibalism (Animals), Animal cannibalism

---

Differences in foraging behavior explain interspecific growth inhibition in competing salamanders

Article Abstract:

Co-existence of two species of pond-breeding salamanders depends on a trade-off in the competitive abilities of their larvae. Exploitative superiority of Ambystoma talpoideum in their foraging behavior is a major factor that inhibits growth of their competitors, the aggressive Ambystoma talpoideum. The larvae of Ambystoma maculatum are faster in detecting, pursuing and catching prey than the larvae of the other species.

Evaluation, Behavior, Biodiversity, Species diversity, Competition (Psychology)

Similar abstracts:

• Abstracts: Hrr25-dependent phosphorylation state regulates organization of the pre-40S subunit. Termination by torpedo
• Abstracts: Experimental determination of the organic carbon flux from open-ocean surface waters. Ecosystem changes in the North Pacific subtropical gyre attributed to the 1991-92 El Nino
• Abstracts: Assessment of pre-laying motivation in the domestic hen using social interaction. Social inhibition of movement in domestic hens
• Abstracts: Purification of an MCM-containing complex as a component of the DNA replication licensing system. A new check on issuing the licence
• Abstracts: Cell-cycle inhibition by independent CDK and PCNA binding domains in p21 super cip1. Mechanism of CDK activation revealed by the structure of a cyclinA-CDK2 complex

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.