The ever-evolving katydid
Farmer's Weekly|1 March 2024
The katydid, an insect that for millions of years has remained on the right side of natural selection, did so by continually adapting its complex camouflaging strategies
Mike Burgess
The ever-evolving katydid

A few years ago, I discovered my first leaf katydid (Eurycorypha sp.) among my veranda pot plants. I was amazed by its ability to perfectly mimic a green leaf in shape, form, pattern and even texture. Only a few days later, a beautifully decorated Acacia katydid (Terpnistria zebrata) came flying in from nearby sweet thorn trees in which they specialise to live in plain sight of predators.

I soon discovered that these two insects were members of a global family of thousands of katydid species found on all continents except Antarctica. Some are as small as a pinkie nail while others are as large as a human hand. All are known for their exceptional camouflaging abilities and by the common name, katydid, derived from North American species that rub their wings together to produce the unmistakeable sound: ka-ty-did.

EVOLUTIONARY CAMOUFLAGE

Because most species of katydids are nocturnal, they are vulnerable to predation during the day and have, therefore, evolved camouflaging strategies to counter this vulnerability. This survival strategy has had obvious evolutionary rewards as it has allowed them to avoid wholesale predation and ensure genetic continuation.

هذه القصة مأخوذة من طبعة 1 March 2024 من Farmer's Weekly.

ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.

هذه القصة مأخوذة من طبعة 1 March 2024 من Farmer's Weekly.

ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.

المزيد من القصص من FARMER'S WEEKLY مشاهدة الكل
Syngenta Seedcare celebrates a decade of innovation
Farmer's Weekly

Syngenta Seedcare celebrates a decade of innovation

Syngenta's ambition is to enable their customers' investments to grow in healthy soil from treated seeds to young plants through innovation and collaboration, writes Magda du Toit.

time-read
3 mins  |
November 22, 2024
Agri workers shine at Western Cape awards
Farmer's Weekly

Agri workers shine at Western Cape awards

Lindie-Alet van Staden, a garden and olive orchard manager at L’Ormarins Wine Estate in Franschhoek, was crowned as the Western Cape Prestige Agri-Worker of 2024 at a gala event recently held near Paarl.

time-read
1 min  |
November 22, 2024
Small and large farmers recognised at grain awards
Farmer's Weekly

Small and large farmers recognised at grain awards

The annual Grain SA/Syngenta awards ceremony bears testimony to the quality of farmers in the grain industry.

time-read
1 min  |
November 22, 2024
Growing partnerships: Fedgroup's flexible and innovative approach
Farmer's Weekly

Growing partnerships: Fedgroup's flexible and innovative approach

Janine Ryan spoke to Warren Winchester, general manager of impact investing at Fedgroup, about why the company became involved in agriculture, and what it offers farmers and their immediate communities.

time-read
6 mins  |
November 22, 2024
Why fish farms fail, and how to avoid becoming a statistic
Farmer's Weekly

Why fish farms fail, and how to avoid becoming a statistic

The popularity of launching fish farms is not matched by their success. Leslie Ter Morshuizen, owner of Aquaculture Solutions, explores the factors that cause most of these businesses to go under.

time-read
3 mins  |
November 22, 2024
Where history and modernity meet in a luxurious setting
Farmer's Weekly

Where history and modernity meet in a luxurious setting

Brian Berkman kept his eyes peeled for ghosts in the oldest continuously run hotel in South Africa, but all he found was a fabulous two-night stay.

time-read
4 mins  |
November 22, 2024
THE HITCHING POST
Farmer's Weekly

THE HITCHING POST

I'm a stylish elderly lady with a radiant glow and a good sense of humour that keeps me young at heart.

time-read
2 mins  |
November 22, 2024
Cutworms: check the weeds on your fields!
Farmer's Weekly

Cutworms: check the weeds on your fields!

Zunel van Eeden explains why understanding the ecological interplay between cutworms and weeds is crucial for effective pest management. Producers should disrupt the life cycle of cutworms to minimise crop damage.

time-read
5 mins  |
November 22, 2024
Does high-density grazing mimic grazing patterns of game?
Farmer's Weekly

Does high-density grazing mimic grazing patterns of game?

In their paper on high-density grazing in Southern Africa, professors Angelinus Franke and Elmarie Kotzé from the Department of Soil, Crop and Climate Sciences at the University of the Free State say high-density grazing systems may not accurately reflect natural ecosystems. Roelof Bezuidenhout reports.

time-read
5 mins  |
November 22, 2024
Global grain outlook: 2024/25 marketing season
Farmer's Weekly

Global grain outlook: 2024/25 marketing season

In its latest summer crops report, the Crop Estimates Committee says South African farmers intend to plant 4,47 million hectares of summer grains and oilseeds in the 2024/25 season, up 1% from the previous season. As South Africa exports maize and soya bean, Annelie Coleman reports on the latest trends in the international grain and oilseed markets, amid fluctuations in weather conditions and ongoing armed conflicts.

time-read
5 mins  |
November 22, 2024