Nesting of Ceratina nigrolabiata, a biparental bee

AbstractBiparental care is very rare in insects, and it was well-documented in only one bee species to this date – Ceratina nigrolabiata. However, biparental care was only recently discovered in this species, and detailed description of natural history of this species is missing. Here, we describe the nesting cycle of C. nigrolabiata. Pairs of C. nigrolabiata are established before female starts offspring provisioning. After provisioning is finished (when youngest offspring reached larval stage), the male abandons the nest. Males which are present in nests where female already finished provisioning brood cells, are probably mainly temporary visitors. The female can perform long-time offspring guarding, but only 22% of completely provisioned nests are guarded by a female. Most nests (54%) are closed and abandoned, when provisioning is completed, and other (24%) are orphaned before provisioning is finished. Guarded nests have statistically higher number of brood cells provisioned than unguarded nests. Generally, C. nigrolabiata is unique among bees due to its biparental behavior, but it has also uncommon traits of nesting biology among Ceratina bees, e.g. fast offspring development in comparison with provisioning rate, and high proportion of nests which are closed and abandoned by mother.

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Surgical Techniques and Risk of Postoperative Recurrence in CD: A Game Changer?

Inflammatory Intestinal Diseases ◽

10.1159/000515372 ◽

2021 ◽

pp. 1-7

Author(s):

Gaetano Luglio ◽

Toru Kono

Keyword(s):

Natural History ◽

Early Stage ◽

Surgical Techniques ◽

Postoperative Recurrence ◽

Primary Surgery ◽

Long Term Follow Up ◽

Long Time ◽

History Of ◽

The Impact

Background: Since its first description, the role of surgery in Crohn’s disease (CD) has always been controversial; in fact, it has been mainly considered as a gastroenterological disease for long time. Nevertheless, despite great advances in medical therapy, up to 70–80% of patients with CD will require surgery in their lifetime and up to 30% of them will undergo repeated surgeries due to recurrences. For these reasons, the idea of surgery as a tool in the therapeutic armamentarium to consider even in the early stage of the disease has progressively spread in the last decades, even corroborated by reports showing how primary surgery is able to definitively treat around half of the patients at long-term follow-up. More surgeons are nowadays more and more involved in developing techniques to reduce recurrences that have always been considered as part of the natural history of the disease so far. Summary: In this review, we will go through the role of surgery in the management of CD, showing the potential benefits of an early surgical approach as well as the impact of surgical research in the natural history of the disease. From this standpoint, we will show the role of different anastomotic configurations, emphasizing how more and more data are definitively establishing the impact of the novel Kono-S anastomosis in reducing endoscopic and surgical recurrence. Mesentery-based surgery is a novel and appealing surgical perspective, but more data are required. Key Messages: Surgery has demonstrated to be a crucial tool in the therapeutic armamentarium for the management of CD. Early surgery and novel surgical techniques, such as the Kono-S anastomosis, may have an impact on the natural history of the disease, including the possibility to prevent recurrences.

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How is the moral stance related to the intentional stance and group thinking?

Behavioral and Brain Sciences ◽

10.1017/s0140525x19002413 ◽

2020 ◽

Vol 43 ◽

Author(s):

Hannes Rakoczy

Keyword(s):

Natural History ◽

Social Cognitive ◽

Intentional Stance ◽

Cognitive Capacities ◽

Shared Intentionality ◽

History Of ◽

Group Thinking ◽

Moral Stance

Abstract The natural history of our moral stance told here in this commentary reveals the close nexus of morality and basic social-cognitive capacities. Big mysteries about morality thus transform into smaller and more manageable ones. Here, I raise questions regarding the conceptual, ontogenetic, and evolutionary relations of the moral stance to the intentional and group stances and to shared intentionality.

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