Faculty Opinions recommendation of The influence of territoriality and mating system on the evolution of male care: a phylogenetic study on fish.

Author(s):  
Arja Kaitala
2014 ◽  
Vol 281 (1782) ◽  
pp. 20140195 ◽  
Author(s):  
Maren Huck ◽  
Eduardo Fernandez-Duque ◽  
Paul Babb ◽  
Theodore Schurr

Understanding the evolution of mating systems, a central topic in evolutionary biology for more than 50 years, requires examining the genetic consequences of mating and the relationships between social systems and mating systems. Among pair-living mammals, where genetic monogamy is extremely rare, the extent of extra-group paternity rates has been associated with male participation in infant care, strength of the pair bond and length of the breeding season. This study evaluated the relationship between two of those factors and the genetic mating system of socially monogamous mammals, testing predictions that male care and strength of pair bond would be negatively correlated with rates of extra-pair paternity (EPP). Autosomal microsatellite analyses provide evidence for genetic monogamy in a pair-living primate with bi-parental care, the Azara's owl monkey ( Aotus azarae ) . A phylogenetically corrected generalized least square analysis was used to relate male care and strength of the pair bond to their genetic mating system (i.e. proportions of EPP) in 15 socially monogamous mammalian species. The intensity of male care was correlated with EPP rates in mammals, while strength of pair bond failed to reach statistical significance. Our analyses show that, once social monogamy has evolved, paternal care, and potentially also close bonds, may facilitate the evolution of genetic monogamy.


2019 ◽  
Vol 37 (4) ◽  
pp. 222-232 ◽  
Author(s):  
Melissa A Millar ◽  
Janet M Anthony ◽  
David J Coates ◽  
Margaret Byrne ◽  
Siegfried L Krauss ◽  
...  

2017 ◽  
Vol 51 ◽  
pp. 71-105 ◽  
Author(s):  
N. A. Davidovich

The absence of a conceptual terminology, sufficiently developed and widely accepted in the Russian literature, significantly hinders progress in the field of reproductive biology of diatoms, restricts communication and debate, prevents training and transfer of knowledge. The present work is an attempt, based on world literature and our own research experience, to summarize, systematize, add, and clarify the existing terms, concepts and definitions related to research which are focused on sex and sexual reproduction in diatoms. A glossary of key terms (more than 200, including synonyms) is provided. Terms refer to diatom reproductive biology, life cycles, fertilization, mating system, gender (including inheritance and determination of sex, as well as inheritance associated with sex). Contradictions between possible interpretations of certain terms are briefly discussed.


2013 ◽  
Vol 20 (6) ◽  
pp. 676-684 ◽  
Author(s):  
Wang Xia ◽  
Wang Jing ◽  
Jiang Jinghu ◽  
Kang Ming

Crop Science ◽  
1984 ◽  
Vol 24 (4) ◽  
pp. 793-796 ◽  
Author(s):  
L. M. Pollak ◽  
C. O. Gardner ◽  
A. L. Kahler ◽  
M. Thomas‐Compton
Keyword(s):  

2020 ◽  
Vol 12 (3) ◽  
pp. 15359-15363
Author(s):  
Sourabh Ranjan Hota ◽  
Sonali Sahoo ◽  
Manojita Dash ◽  
Avishek Pahari ◽  
Bijayendranath Mohanty ◽  
...  

Gastrointestinal helminths are ubiquitous in both domestic and wild animals. Infections are often sub-clinical except in circumstances of destabilization of host-parasite equilibrium by innate or environmental factors. The present case deals with microscopic and molecular diagnosis of Murshidia linstowi recovered from an elephant. A post-mortem examination of a free-ranging juvenile male elephant calf that had died of electrocution in Athagarh Wildlife Division revealed the presence of slender, whitish nematodes in the stomach. No gross lesions were noticed either in the site of predilection or any other internal organs. The average length of the parasites was 3.8cm.  These parasites were collected for further gross as well as microscopic examination following routine parasitological techniques. Temporary mounts prepared after cleaning the nematodes in lactophenol were observed under a microscope. Morphological features such as a well-developed mouth collar, large and globular buccal capsule with fine tubercles, cone shaped oesophageal funnel, short bursa having indistinctly divided lobes and closely apposed ventral rays and stout spicules with club shaped tips bent dorsally corroborated with that of M.linstowi (male). Amplification of the rDNA from the internal transcribed spacer (ITS) region using universal nematode primers NC2 and NC5 revealed a product size of 870bp. The PCR product was subjected to sequencing followed by NCBI-BLAST which revealed 98% homology with M. linstowi. A phylogenetic study showed a maximum similarity with M.linstowi recovered from elephants in Kenya. This particular nematode species belonging to the family Strongylidae and sub-family Cyathostominae appears to be the first documented report in India.


Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 229
Author(s):  
Won Joon Jung ◽  
Sang Wha Kim ◽  
Sib Sankar Giri ◽  
Hyoun Joong Kim ◽  
Sang Guen Kim ◽  
...  

This study presents a novel Janthinobacterium strain, SNU WT3, isolated from the kidney of rainbow trout. A phylogenetic study using 16S rRNA sequences indicated that the strain is closely related to Janthinobacterium svalbardensis JA-1T. However, biochemical analysis found differences in D-xylose adonitol, N-acetylglucosamine, arbutin, and cellobiose. As for genome-to-genome distance and average nucleotide identity values calculated between strain SNU WT3 and other related strains such as J. lividum EIF1, J. svalbardensis PAMC 27463, and J. agaricidamnosum BHSEK were all below the cutoff value between species. DNA-DNA hybridization between strain SNU WT3 and other close relatives indicated the results of J. lividum DSM 1522T (47.11%) and J. svalbardensis JA-1T (38.88%) individually. The major fatty acid compositions of strain SNU WT3 were cylco-C17:0 (41.45%), C16:0 (33.86%) and C12:0 (5.87%). The major polar lipids were phosphatidylethanolamine, phosphatidylcholine, phosphatidylglycerol, and diphosphatidylglycerol. The quinone system was composed mainly of ubiquinone Q-8. The genome of strain SNU WT3 consists of 6,314,370 bp with a G + C content of 62.35%. Here, we describe a novel species of the genus Janthinobacterium, and the name Janthinobacterium tructae has been proposed with SNU WT3T (=KCTC 72518 = JCM 33613) as the type strain.


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