Evidence map›Paper›PMID 31680998›Full record

ArticleFrontiers in physiology2019

Male Alternative Reproductive Tactics and Associated Evolution of Anatomical Characteristics in Loliginid Squid.

José E A R Marian, Lígia H Apostólico, Chuan-Chin Chiao, Roger T Hanlon, Noritaka Hirohashi, Yoko Iwata, Jennifer Mather, Noriyosi Sato, Paul W Shaw

Abstract read
In one paragraph

Article in Frontiers in physiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. Within-female sperm allocation inmicroPublication biology · 2025
    Article
  3. Alternative mating pattern inmicroPublication biology · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

José E A R MarianDepartment of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
Lígia H ApostólicoDepartment of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
Chuan-Chin ChiaoDepartment of Life Sciences, National Tsing Hua University, Hsinchu, Taiwan.
Roger T HanlonMarine Biological Laboratory, Woods Hole, MA, United States.
Noritaka HirohashiDepartment of Life Sciences, Shimane University, Matsue, Japan.
Yoko IwataAtmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan, Japan.
Jennifer MatherDepartment of Psychology, University of Lethbridge, Lethbridge, AB, Canada.
Noriyosi SatoDepartment of Fisheries, School of Marine Science and Technology, Tokai University, Shizuoka, Japan.
Paul W ShawInstitute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Loliginid squids provide a unique model system to explore male alternative reproductive tactics (ARTs) and their linkage to size, behavioral decision making, and possibly age. Large individuals fight one another and the winners form temporary consortships with females, while smaller individuals do not engage in male-male agonistic bouts but use various sneaker tactics to obtain matings, each with varying mating and fertilization success. There is substantial behavioral flexibility in most species, as smaller males can facultatively switch to the alternative consort behaviors as the behavioral context changes. These forms of ARTs can involve different: mating posture; site of spermatophore deposition; fertilization success; and sperm traits. Most of the traits of male dimorphism (both anatomical and behavioral) are consistent with traditional sexual selection theory, while others have unique features that may have evolved in response to the fertilization environment faced by each temporary or permanent male morph.

Indexed as

alternative phenotypesARTsCephalopodaconsortLoliginidaemale dimorphismsexual selectionsneaker

Identifiers

PMID31680998
PMCPMC6803530

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.